./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-min-max-inc-dec.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-min-max-inc-dec.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 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:39:58,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:39:58,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:39:58,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:39:58,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:39:58,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:39:58,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:39:58,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:39:58,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:39:58,633 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:39:58,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:39:58,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:39:58,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:39:58,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:39:58,634 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:39:58,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:39:58,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:39:58,635 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:39:58,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:39:58,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:39:58,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:39:58,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:39:58,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:39:58,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:39:58,638 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:39:58,638 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:39:58,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:39:58,638 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:39:58,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:39:58,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:39:58,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:39:58,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:39:58,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:39:58,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:39:58,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:39:58,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:39:58,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:39:58,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:39:58,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:39:58,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:39:58,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:39:58,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:39:58,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2024-10-14 14:39:58,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:39:58,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:39:58,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:39:58,847 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:39:58,847 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:39:58,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-10-14 14:40:00,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:40:00,219 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:40:00,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-10-14 14:40:00,227 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761709596/02b8aed2e4c5437ba2fb0c042c9be67a/FLAG9bbcf6b35 [2024-10-14 14:40:00,237 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761709596/02b8aed2e4c5437ba2fb0c042c9be67a [2024-10-14 14:40:00,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:40:00,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:40:00,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:40:00,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:40:00,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:40:00,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf8ea72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00, skipping insertion in model container [2024-10-14 14:40:00,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,264 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:40:00,426 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-min-max-inc-dec.wvr.c[3336,3349] [2024-10-14 14:40:00,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:40:00,438 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:40:00,460 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-min-max-inc-dec.wvr.c[3336,3349] [2024-10-14 14:40:00,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:40:00,475 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:40:00,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00 WrapperNode [2024-10-14 14:40:00,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:40:00,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:40:00,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:40:00,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:40:00,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,524 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 150 [2024-10-14 14:40:00,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:40:00,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:40:00,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:40:00,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:40:00,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,537 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,556 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-14 14:40:00,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:40:00,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:40:00,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:40:00,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:40:00,570 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (1/1) ... [2024-10-14 14:40:00,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:40:00,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:40:00,600 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 14:40:00,603 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 14:40:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:40:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:40:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:40:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:40:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:40:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:40:00,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:40:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:40:00,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:40:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:40:00,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:40:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 14:40:00,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 14:40:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:40:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:40:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-14 14:40:00,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-14 14:40:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:40:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:40:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 14:40:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:40:00,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:40:00,647 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 14:40:00,747 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:40:00,749 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:40:01,009 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:40:01,010 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:40:01,191 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:40:01,194 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-14 14:40:01,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:40:01 BoogieIcfgContainer [2024-10-14 14:40:01,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:40:01,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:40:01,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:40:01,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:40:01,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:40:00" (1/3) ... [2024-10-14 14:40:01,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5294b08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:40:01, skipping insertion in model container [2024-10-14 14:40:01,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:40:00" (2/3) ... [2024-10-14 14:40:01,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5294b08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:40:01, skipping insertion in model container [2024-10-14 14:40:01,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:40:01" (3/3) ... [2024-10-14 14:40:01,202 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-10-14 14:40:01,214 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:40:01,215 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:40:01,215 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:40:01,265 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-10-14 14:40:01,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 55 transitions, 145 flow [2024-10-14 14:40:01,325 INFO L124 PetriNetUnfolderBase]: 5/50 cut-off events. [2024-10-14 14:40:01,325 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-14 14:40:01,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 50 events. 5/50 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-10-14 14:40:01,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 55 transitions, 145 flow [2024-10-14 14:40:01,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 49 transitions, 128 flow [2024-10-14 14:40:01,342 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:40:01,347 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;@10178426, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:40:01,347 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-14 14:40:01,359 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:40:01,359 INFO L124 PetriNetUnfolderBase]: 5/48 cut-off events. [2024-10-14 14:40:01,359 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-14 14:40:01,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:01,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:40:01,360 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 3 more)] === [2024-10-14 14:40:01,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:01,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1258520641, now seen corresponding path program 1 times [2024-10-14 14:40:01,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:01,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470675494] [2024-10-14 14:40:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:01,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:01,750 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 14:40:01,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:01,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470675494] [2024-10-14 14:40:01,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470675494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:40:01,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:40:01,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:40:01,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119734818] [2024-10-14 14:40:01,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:40:01,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:40:01,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:01,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:40:01,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:40:01,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-10-14 14:40:01,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 14:40:01,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:01,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-10-14 14:40:01,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:03,685 INFO L124 PetriNetUnfolderBase]: 18001/23960 cut-off events. [2024-10-14 14:40:03,685 INFO L125 PetriNetUnfolderBase]: For 1303/1303 co-relation queries the response was YES. [2024-10-14 14:40:03,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48086 conditions, 23960 events. 18001/23960 cut-off events. For 1303/1303 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 139428 event pairs, 7644 based on Foata normal form. 698/24062 useless extension candidates. Maximal degree in co-relation 45099. Up to 14906 conditions per place. [2024-10-14 14:40:03,857 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 55 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-10-14 14:40:03,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 300 flow [2024-10-14 14:40:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:40:03,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:40:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-14 14:40:03,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5954545454545455 [2024-10-14 14:40:03,869 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 128 flow. Second operand 4 states and 131 transitions. [2024-10-14 14:40:03,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 300 flow [2024-10-14 14:40:03,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 272 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-14 14:40:03,896 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 122 flow [2024-10-14 14:40:03,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-10-14 14:40:03,900 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -6 predicate places. [2024-10-14 14:40:03,902 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 122 flow [2024-10-14 14:40:03,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 14:40:03,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:03,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:40:03,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:40:03,903 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 3 more)] === [2024-10-14 14:40:03,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:03,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1157598103, now seen corresponding path program 1 times [2024-10-14 14:40:03,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:03,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031507305] [2024-10-14 14:40:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:03,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:04,122 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 14:40:04,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031507305] [2024-10-14 14:40:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031507305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:40:04,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:40:04,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:40:04,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591172849] [2024-10-14 14:40:04,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:40:04,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:40:04,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:04,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:40:04,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:40:04,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-14 14:40:04,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 14:40:04,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:04,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-14 14:40:04,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:06,004 INFO L124 PetriNetUnfolderBase]: 23690/31979 cut-off events. [2024-10-14 14:40:06,005 INFO L125 PetriNetUnfolderBase]: For 5044/5044 co-relation queries the response was YES. [2024-10-14 14:40:06,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67399 conditions, 31979 events. 23690/31979 cut-off events. For 5044/5044 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 195383 event pairs, 13075 based on Foata normal form. 792/32071 useless extension candidates. Maximal degree in co-relation 8987. Up to 21469 conditions per place. [2024-10-14 14:40:06,124 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 60 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-10-14 14:40:06,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 75 transitions, 312 flow [2024-10-14 14:40:06,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:40:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:40:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-10-14 14:40:06,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-10-14 14:40:06,128 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 122 flow. Second operand 4 states and 130 transitions. [2024-10-14 14:40:06,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 75 transitions, 312 flow [2024-10-14 14:40:06,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:40:06,136 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 132 flow [2024-10-14 14:40:06,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-10-14 14:40:06,137 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-10-14 14:40:06,137 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 132 flow [2024-10-14 14:40:06,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 14:40:06,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:06,138 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:40:06,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:40:06,140 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 3 more)] === [2024-10-14 14:40:06,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:06,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1509482004, now seen corresponding path program 1 times [2024-10-14 14:40:06,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:06,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003319242] [2024-10-14 14:40:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:06,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:40:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:06,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003319242] [2024-10-14 14:40:06,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003319242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:40:06,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:40:06,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:40:06,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335178889] [2024-10-14 14:40:06,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:40:06,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:40:06,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:06,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:40:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:40:06,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-14 14:40:06,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:40:06,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:06,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-14 14:40:06,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:08,036 INFO L124 PetriNetUnfolderBase]: 27195/36341 cut-off events. [2024-10-14 14:40:08,037 INFO L125 PetriNetUnfolderBase]: For 7592/8697 co-relation queries the response was YES. [2024-10-14 14:40:08,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80954 conditions, 36341 events. 27195/36341 cut-off events. For 7592/8697 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 215351 event pairs, 15696 based on Foata normal form. 2101/37386 useless extension candidates. Maximal degree in co-relation 22058. Up to 24521 conditions per place. [2024-10-14 14:40:08,202 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 61 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-10-14 14:40:08,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 329 flow [2024-10-14 14:40:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:40:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:40:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-10-14 14:40:08,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2024-10-14 14:40:08,204 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 132 flow. Second operand 4 states and 129 transitions. [2024-10-14 14:40:08,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 329 flow [2024-10-14 14:40:08,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:40:08,211 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 142 flow [2024-10-14 14:40:08,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-10-14 14:40:08,212 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-10-14 14:40:08,212 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 142 flow [2024-10-14 14:40:08,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:40:08,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:08,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:40:08,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:40:08,213 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 3 more)] === [2024-10-14 14:40:08,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash 598558971, now seen corresponding path program 1 times [2024-10-14 14:40:08,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:08,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054121714] [2024-10-14 14:40:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:08,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:40:08,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:08,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054121714] [2024-10-14 14:40:08,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054121714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:40:08,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:40:08,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:40:08,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380716841] [2024-10-14 14:40:08,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:40:08,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:40:08,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:08,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:40:08,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:40:08,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-10-14 14:40:08,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 14:40:08,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:08,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-10-14 14:40:08,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:10,671 INFO L124 PetriNetUnfolderBase]: 34269/46032 cut-off events. [2024-10-14 14:40:10,671 INFO L125 PetriNetUnfolderBase]: For 12821/15641 co-relation queries the response was YES. [2024-10-14 14:40:10,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106443 conditions, 46032 events. 34269/46032 cut-off events. For 12821/15641 co-relation queries the response was YES. Maximal size of possible extension queue 1682. Compared 293763 event pairs, 19010 based on Foata normal form. 4202/49375 useless extension candidates. Maximal degree in co-relation 30507. Up to 29381 conditions per place. [2024-10-14 14:40:10,879 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 60 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-10-14 14:40:10,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 341 flow [2024-10-14 14:40:10,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:40:10,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:40:10,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-10-14 14:40:10,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-10-14 14:40:10,881 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 142 flow. Second operand 4 states and 130 transitions. [2024-10-14 14:40:10,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 341 flow [2024-10-14 14:40:10,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:40:10,886 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 152 flow [2024-10-14 14:40:10,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-10-14 14:40:10,887 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2024-10-14 14:40:10,887 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 152 flow [2024-10-14 14:40:10,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 14:40:10,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:10,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:40:10,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:40:10,888 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 3 more)] === [2024-10-14 14:40:10,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash 413711588, now seen corresponding path program 1 times [2024-10-14 14:40:10,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:10,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895089063] [2024-10-14 14:40:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:10,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 14:40:11,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:11,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895089063] [2024-10-14 14:40:11,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895089063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:40:11,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:40:11,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:40:11,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893816239] [2024-10-14 14:40:11,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:40:11,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:40:11,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:11,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:40:11,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:40:11,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-10-14 14:40:11,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 14:40:11,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:11,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-10-14 14:40:11,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:40:13,780 INFO L124 PetriNetUnfolderBase]: 34269/45731 cut-off events. [2024-10-14 14:40:13,780 INFO L125 PetriNetUnfolderBase]: For 18778/21598 co-relation queries the response was YES. [2024-10-14 14:40:13,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111602 conditions, 45731 events. 34269/45731 cut-off events. For 18778/21598 co-relation queries the response was YES. Maximal size of possible extension queue 1669. Compared 285240 event pairs, 28600 based on Foata normal form. 2820/47830 useless extension candidates. Maximal degree in co-relation 32765. Up to 43084 conditions per place. [2024-10-14 14:40:13,976 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 39 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-10-14 14:40:13,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 236 flow [2024-10-14 14:40:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:40:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:40:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-10-14 14:40:13,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-10-14 14:40:13,978 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 152 flow. Second operand 3 states and 92 transitions. [2024-10-14 14:40:13,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 236 flow [2024-10-14 14:40:13,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:40:13,997 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 160 flow [2024-10-14 14:40:13,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-10-14 14:40:13,998 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2024-10-14 14:40:13,998 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 160 flow [2024-10-14 14:40:13,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 14:40:13,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:40:13,998 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:40:13,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:40:13,998 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 3 more)] === [2024-10-14 14:40:13,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:40:13,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1919709710, now seen corresponding path program 1 times [2024-10-14 14:40:13,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:40:13,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208401321] [2024-10-14 14:40:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:13,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:40:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:40:14,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:40:14,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208401321] [2024-10-14 14:40:14,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208401321] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:40:14,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737744448] [2024-10-14 14:40:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:40:14,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:40:14,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:40:14,578 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 14:40:14,579 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 14:40:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:40:14,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-14 14:40:14,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:40:14,739 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 14:40:14,914 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 15 treesize of output 7 [2024-10-14 14:40:14,985 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 14:40:14,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:40:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:40:15,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737744448] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:40:15,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:40:15,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 8] total 22 [2024-10-14 14:40:15,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362817541] [2024-10-14 14:40:15,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:40:15,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 14:40:15,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:40:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 14:40:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-10-14 14:40:15,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-10-14 14:40:15,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 160 flow. Second operand has 22 states, 22 states have (on average 20.136363636363637) internal successors, (443), 22 states have internal predecessors, (443), 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 14:40:15,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:40:15,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-10-14 14:40:15,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand