./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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 ../../../trunk/examples/svcomp/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 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:53:12,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:53:12,633 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:53:12,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:53:12,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:53:12,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:53:12,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:53:12,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:53:12,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:53:12,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:53:12,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:53:12,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:53:12,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:53:12,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:53:12,686 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:53:12,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:53:12,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:53:12,686 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:53:12,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:53:12,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:53:12,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:53:12,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:53:12,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:53:12,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:53:12,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:53:12,689 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:53:12,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:53:12,689 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:53:12,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:53:12,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:53:12,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:53:12,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:53:12,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:53:12,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:53:12,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:53:12,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:53:12,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:53:12,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:53:12,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:53:12,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:53:12,692 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:53:12,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:53:12,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:53:12,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2024-06-27 16:53:12,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:53:12,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:53:12,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:53:12,926 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:53:12,927 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:53:12,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2024-06-27 16:53:14,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:53:14,211 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:53:14,211 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2024-06-27 16:53:14,221 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ad5a30c8/c74c0f57b250483099397232dcba60a7/FLAG1234aa613 [2024-06-27 16:53:14,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ad5a30c8/c74c0f57b250483099397232dcba60a7 [2024-06-27 16:53:14,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:53:14,236 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:53:14,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:53:14,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:53:14,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:53:14,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@492a721f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14, skipping insertion in model container [2024-06-27 16:53:14,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,267 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:53:14,452 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3336,3349] [2024-06-27 16:53:14,463 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:53:14,469 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:53:14,500 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3336,3349] [2024-06-27 16:53:14,509 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:53:14,523 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:53:14,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14 WrapperNode [2024-06-27 16:53:14,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:53:14,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:53:14,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:53:14,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:53:14,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,570 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 150 [2024-06-27 16:53:14,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:53:14,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:53:14,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:53:14,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:53:14,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,599 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]. [2024-06-27 16:53:14,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:53:14,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:53:14,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:53:14,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:53:14,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (1/1) ... [2024-06-27 16:53:14,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:53:14,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:53:14,678 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) [2024-06-27 16:53:14,696 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 [2024-06-27 16:53:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:53:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 16:53:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 16:53:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 16:53:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 16:53:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:53:14,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:53:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:53:14,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:53:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:53:14,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:53:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 16:53:14,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 16:53:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:53:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:53:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-06-27 16:53:14,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-06-27 16:53:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:53:14,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:53:14,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 16:53:14,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:53:14,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:53:14,726 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:53:14,822 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:53:14,824 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:53:15,098 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:53:15,098 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:53:15,296 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:53:15,296 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-06-27 16:53:15,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:53:15 BoogieIcfgContainer [2024-06-27 16:53:15,297 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:53:15,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:53:15,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:53:15,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:53:15,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:53:14" (1/3) ... [2024-06-27 16:53:15,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaf6c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:53:15, skipping insertion in model container [2024-06-27 16:53:15,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:53:14" (2/3) ... [2024-06-27 16:53:15,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaf6c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:53:15, skipping insertion in model container [2024-06-27 16:53:15,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:53:15" (3/3) ... [2024-06-27 16:53:15,304 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-06-27 16:53:15,310 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:53:15,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:53:15,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:53:15,320 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:53:15,379 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-06-27 16:53:15,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 55 transitions, 145 flow [2024-06-27 16:53:15,451 INFO L124 PetriNetUnfolderBase]: 5/50 cut-off events. [2024-06-27 16:53:15,451 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 16:53:15,454 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. [2024-06-27 16:53:15,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 55 transitions, 145 flow [2024-06-27 16:53:15,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 49 transitions, 128 flow [2024-06-27 16:53:15,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:53:15,474 INFO L357 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, mHoare=true, 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;@54210b28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:53:15,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 16:53:15,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:53:15,495 INFO L124 PetriNetUnfolderBase]: 5/48 cut-off events. [2024-06-27 16:53:15,495 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 16:53:15,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:53:15,496 INFO L208 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] [2024-06-27 16:53:15,496 INFO L420 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)] === [2024-06-27 16:53:15,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:53:15,502 INFO L85 PathProgramCache]: Analyzing trace with hash -429368449, now seen corresponding path program 1 times [2024-06-27 16:53:15,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:53:15,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198219952] [2024-06-27 16:53:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:53:15,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:53:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:53:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:53:15,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:53:15,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198219952] [2024-06-27 16:53:15,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198219952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:53:15,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:53:15,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:53:15,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919936803] [2024-06-27 16:53:15,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:53:15,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:53:15,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:53:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:53:16,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:53:16,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-06-27 16:53:16,042 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) [2024-06-27 16:53:16,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:53:16,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-06-27 16:53:16,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:53:17,842 INFO L124 PetriNetUnfolderBase]: 17667/23489 cut-off events. [2024-06-27 16:53:17,843 INFO L125 PetriNetUnfolderBase]: For 1245/1245 co-relation queries the response was YES. [2024-06-27 16:53:17,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47089 conditions, 23489 events. 17667/23489 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 136551 event pairs, 8062 based on Foata normal form. 650/23524 useless extension candidates. Maximal degree in co-relation 44081. Up to 14906 conditions per place. [2024-06-27 16:53:18,100 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 54 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2024-06-27 16:53:18,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 296 flow [2024-06-27 16:53:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:53:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:53:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-27 16:53:18,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-06-27 16:53:18,112 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 128 flow. Second operand 4 states and 130 transitions. [2024-06-27 16:53:18,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 296 flow [2024-06-27 16:53:18,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 268 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 16:53:18,139 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 122 flow [2024-06-27 16:53:18,141 INFO L264 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} [2024-06-27 16:53:18,145 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -6 predicate places. [2024-06-27 16:53:18,145 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 122 flow [2024-06-27 16:53:18,145 INFO L496 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) [2024-06-27 16:53:18,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:53:18,146 INFO L208 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] [2024-06-27 16:53:18,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:53:18,146 INFO L420 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)] === [2024-06-27 16:53:18,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:53:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash -18417488, now seen corresponding path program 1 times [2024-06-27 16:53:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:53:18,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823658754] [2024-06-27 16:53:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:53:18,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:53:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:53:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:53:18,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:53:18,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823658754] [2024-06-27 16:53:18,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823658754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:53:18,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:53:18,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:53:18,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280060914] [2024-06-27 16:53:18,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:53:18,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:53:18,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:53:18,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:53:18,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:53:18,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-06-27 16:53:18,278 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) [2024-06-27 16:53:18,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:53:18,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-06-27 16:53:18,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:53:20,139 INFO L124 PetriNetUnfolderBase]: 23248/31393 cut-off events. [2024-06-27 16:53:20,139 INFO L125 PetriNetUnfolderBase]: For 4060/4060 co-relation queries the response was YES. [2024-06-27 16:53:20,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65825 conditions, 31393 events. 23248/31393 cut-off events. For 4060/4060 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 190953 event pairs, 12821 based on Foata normal form. 772/31636 useless extension candidates. Maximal degree in co-relation 11102. Up to 21059 conditions per place. [2024-06-27 16:53:20,268 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 60 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-06-27 16:53:20,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 75 transitions, 312 flow [2024-06-27 16:53:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:53:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:53:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-27 16:53:20,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-06-27 16:53:20,274 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 122 flow. Second operand 4 states and 130 transitions. [2024-06-27 16:53:20,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 75 transitions, 312 flow [2024-06-27 16:53:20,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:53:20,295 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 132 flow [2024-06-27 16:53:20,296 INFO L264 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} [2024-06-27 16:53:20,296 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-06-27 16:53:20,296 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 132 flow [2024-06-27 16:53:20,297 INFO L496 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) [2024-06-27 16:53:20,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:53:20,299 INFO L208 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] [2024-06-27 16:53:20,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:53:20,300 INFO L420 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)] === [2024-06-27 16:53:20,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:53:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash -666316521, now seen corresponding path program 1 times [2024-06-27 16:53:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:53:20,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770083395] [2024-06-27 16:53:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:53:20,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:53:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:53:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:53:20,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:53:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770083395] [2024-06-27 16:53:20,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770083395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:53:20,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:53:20,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:53:20,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147944478] [2024-06-27 16:53:20,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:53:20,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:53:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:53:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:53:20,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:53:20,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-06-27 16:53:20,392 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) [2024-06-27 16:53:20,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:53:20,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-06-27 16:53:20,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:53:22,281 INFO L124 PetriNetUnfolderBase]: 26697/35959 cut-off events. [2024-06-27 16:53:22,282 INFO L125 PetriNetUnfolderBase]: For 6312/7389 co-relation queries the response was YES. [2024-06-27 16:53:22,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79386 conditions, 35959 events. 26697/35959 cut-off events. For 6312/7389 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 216114 event pairs, 15386 based on Foata normal form. 2049/37414 useless extension candidates. Maximal degree in co-relation 21622. Up to 24051 conditions per place. [2024-06-27 16:53:22,682 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 61 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-06-27 16:53:22,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 329 flow [2024-06-27 16:53:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:53:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:53:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-27 16:53:22,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2024-06-27 16:53:22,684 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 132 flow. Second operand 4 states and 129 transitions. [2024-06-27 16:53:22,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 329 flow [2024-06-27 16:53:22,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:53:22,694 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 142 flow [2024-06-27 16:53:22,694 INFO L264 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} [2024-06-27 16:53:22,695 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-06-27 16:53:22,695 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 142 flow [2024-06-27 16:53:22,695 INFO L496 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) [2024-06-27 16:53:22,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:53:22,695 INFO L208 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] [2024-06-27 16:53:22,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:53:22,696 INFO L420 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)] === [2024-06-27 16:53:22,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:53:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1129468012, now seen corresponding path program 1 times [2024-06-27 16:53:22,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:53:22,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196171783] [2024-06-27 16:53:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:53:22,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:53:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:53:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:53:22,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:53:22,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196171783] [2024-06-27 16:53:22,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196171783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:53:22,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:53:22,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:53:22,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223850853] [2024-06-27 16:53:22,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:53:22,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:53:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:53:22,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:53:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:53:22,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-06-27 16:53:22,773 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) [2024-06-27 16:53:22,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:53:22,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-06-27 16:53:22,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:53:25,285 INFO L124 PetriNetUnfolderBase]: 34269/46231 cut-off events. [2024-06-27 16:53:25,285 INFO L125 PetriNetUnfolderBase]: For 11820/14640 co-relation queries the response was YES. [2024-06-27 16:53:25,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106362 conditions, 46231 events. 34269/46231 cut-off events. For 11820/14640 co-relation queries the response was YES. Maximal size of possible extension queue 1705. Compared 298132 event pairs, 18632 based on Foata normal form. 4272/49995 useless extension candidates. Maximal degree in co-relation 30489. Up to 28815 conditions per place. [2024-06-27 16:53:25,497 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 61 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-06-27 16:53:25,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 77 transitions, 345 flow [2024-06-27 16:53:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:53:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:53:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-06-27 16:53:25,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5954545454545455 [2024-06-27 16:53:25,499 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 142 flow. Second operand 4 states and 131 transitions. [2024-06-27 16:53:25,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 77 transitions, 345 flow [2024-06-27 16:53:25,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:53:25,510 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 152 flow [2024-06-27 16:53:25,510 INFO L264 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} [2024-06-27 16:53:25,512 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2024-06-27 16:53:25,512 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 152 flow [2024-06-27 16:53:25,512 INFO L496 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) [2024-06-27 16:53:25,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:53:25,512 INFO L208 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] [2024-06-27 16:53:25,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:53:25,513 INFO L420 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)] === [2024-06-27 16:53:25,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:53:25,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1629567330, now seen corresponding path program 1 times [2024-06-27 16:53:25,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:53:25,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241289835] [2024-06-27 16:53:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:53:25,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:53:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:53:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 16:53:25,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:53:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241289835] [2024-06-27 16:53:25,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241289835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:53:25,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:53:25,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:53:25,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372631069] [2024-06-27 16:53:25,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:53:25,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:53:25,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:53:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:53:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:53:25,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-06-27 16:53:25,661 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) [2024-06-27 16:53:25,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:53:25,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-06-27 16:53:25,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:53:28,433 INFO L124 PetriNetUnfolderBase]: 34269/45632 cut-off events. [2024-06-27 16:53:28,433 INFO L125 PetriNetUnfolderBase]: For 18729/21549 co-relation queries the response was YES. [2024-06-27 16:53:28,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111573 conditions, 45632 events. 34269/45632 cut-off events. For 18729/21549 co-relation queries the response was YES. Maximal size of possible extension queue 1679. Compared 284338 event pairs, 28600 based on Foata normal form. 2820/47887 useless extension candidates. Maximal degree in co-relation 32723. Up to 43084 conditions per place. [2024-06-27 16:53:28,652 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 39 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-06-27 16:53:28,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 236 flow [2024-06-27 16:53:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:53:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:53:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-27 16:53:28,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-06-27 16:53:28,655 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 152 flow. Second operand 3 states and 92 transitions. [2024-06-27 16:53:28,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 236 flow [2024-06-27 16:53:28,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:53:28,676 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 160 flow [2024-06-27 16:53:28,676 INFO L264 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} [2024-06-27 16:53:28,678 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2024-06-27 16:53:28,678 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 160 flow [2024-06-27 16:53:28,679 INFO L496 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) [2024-06-27 16:53:28,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:53:28,679 INFO L208 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] [2024-06-27 16:53:28,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:53:28,681 INFO L420 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)] === [2024-06-27 16:53:28,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:53:28,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1002846418, now seen corresponding path program 1 times [2024-06-27 16:53:28,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:53:28,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789077154] [2024-06-27 16:53:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:53:28,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:53:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:53:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:53:29,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:53:29,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789077154] [2024-06-27 16:53:29,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789077154] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:53:29,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310122759] [2024-06-27 16:53:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:53:29,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:53:29,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:53:29,153 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) [2024-06-27 16:53:29,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:53:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:53:29,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjunts are in the unsatisfiable core [2024-06-27 16:53:29,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:53:29,328 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 [2024-06-27 16:53:29,478 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 [2024-06-27 16:53:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:53:29,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:53:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:53:29,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310122759] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:53:29,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:53:29,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 8] total 22 [2024-06-27 16:53:29,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413305085] [2024-06-27 16:53:29,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:53:29,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-06-27 16:53:29,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:53:29,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-06-27 16:53:29,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-06-27 16:53:29,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-06-27 16:53:29,857 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) [2024-06-27 16:53:29,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:53:29,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-06-27 16:53:29,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand