./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/read_write_lock-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/read_write_lock-1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 20:02:15,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 20:02:15,582 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 20:02:15,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 20:02:15,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 20:02:15,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 20:02:15,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 20:02:15,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 20:02:15,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 20:02:15,618 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 20:02:15,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 20:02:15,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 20:02:15,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 20:02:15,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 20:02:15,621 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 20:02:15,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 20:02:15,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 20:02:15,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 20:02:15,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 20:02:15,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 20:02:15,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 20:02:15,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 20:02:15,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 20:02:15,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 20:02:15,623 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 20:02:15,623 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 20:02:15,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 20:02:15,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 20:02:15,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 20:02:15,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 20:02:15,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 20:02:15,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 20:02:15,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:02:15,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 20:02:15,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 20:02:15,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 20:02:15,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 20:02:15,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 20:02:15,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 20:02:15,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 20:02:15,627 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 20:02:15,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 20:02:15,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 20:02:15,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 20:02:15,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 20:02:15,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 20:02:15,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 20:02:15,818 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 20:02:15,818 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 20:02:15,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2024-06-21 20:02:16,934 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 20:02:17,125 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 20:02:17,130 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2024-06-21 20:02:17,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfbb390f7/8fa9683a0d87442e8a386bc3e5a8ceca/FLAG382023b33 [2024-06-21 20:02:17,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfbb390f7/8fa9683a0d87442e8a386bc3e5a8ceca [2024-06-21 20:02:17,157 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 20:02:17,158 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 20:02:17,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/read_write_lock-1.yml/witness.yml [2024-06-21 20:02:17,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 20:02:17,249 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 20:02:17,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 20:02:17,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 20:02:17,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 20:02:17,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:02:17" (1/2) ... [2024-06-21 20:02:17,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4dd3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:02:17, skipping insertion in model container [2024-06-21 20:02:17,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:02:17" (1/2) ... [2024-06-21 20:02:17,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49824141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:02:17, skipping insertion in model container [2024-06-21 20:02:17,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:02:17" (2/2) ... [2024-06-21 20:02:17,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4dd3b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17, skipping insertion in model container [2024-06-21 20:02:17,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:02:17" (2/2) ... [2024-06-21 20:02:17,258 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 20:02:17,297 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 20:02:17,298 INFO L97 edCorrectnessWitness]: Location invariant before [L747-L747] (((! multithreaded || (x == 0 || x == 3)) && (! multithreaded || (y == 0 || y == 3))) && (! multithreaded || ((w == 0 || w == 1) && (y == 0 || y == 3)))) && (! multithreaded || (w == 0 || w == 1)) [2024-06-21 20:02:17,298 INFO L97 edCorrectnessWitness]: Location invariant before [L749-L749] (((! multithreaded || (x == 0 || x == 3)) && (! multithreaded || (y == 0 || y == 3))) && (! multithreaded || ((w == 0 || w == 1) && (y == 0 || y == 3)))) && (! multithreaded || (w == 0 || w == 1)) [2024-06-21 20:02:17,298 INFO L97 edCorrectnessWitness]: Location invariant before [L746-L746] (((! multithreaded || (x == 0 || x == 3)) && (! multithreaded || (y == 0 || y == 3))) && (! multithreaded || ((w == 0 || w == 1) && (y == 0 || y == 3)))) && (! multithreaded || (w == 0 || w == 1)) [2024-06-21 20:02:17,298 INFO L97 edCorrectnessWitness]: Location invariant before [L748-L748] (((! multithreaded || (x == 0 || x == 3)) && (! multithreaded || (y == 0 || y == 3))) && (! multithreaded || ((w == 0 || w == 1) && (y == 0 || y == 3)))) && (! multithreaded || (w == 0 || w == 1)) [2024-06-21 20:02:17,298 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 20:02:17,299 INFO L106 edCorrectnessWitness]: ghost_update [L745-L745] multithreaded = 1; [2024-06-21 20:02:17,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 20:02:17,647 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:02:17,654 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 20:02:17,768 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:02:17,809 INFO L206 MainTranslator]: Completed translation [2024-06-21 20:02:17,810 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17 WrapperNode [2024-06-21 20:02:17,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 20:02:17,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 20:02:17,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 20:02:17,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 20:02:17,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,851 INFO L138 Inliner]: procedures = 173, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 98 [2024-06-21 20:02:17,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 20:02:17,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 20:02:17,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 20:02:17,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 20:02:17,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,879 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-21 20:02:17,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 20:02:17,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 20:02:17,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 20:02:17,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 20:02:17,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (1/1) ... [2024-06-21 20:02:17,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:02:17,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 20:02:17,918 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) [2024-06-21 20:02:17,927 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 [2024-06-21 20:02:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 20:02:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 20:02:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-06-21 20:02:17,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-06-21 20:02:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 20:02:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 20:02:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 20:02:17,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 20:02:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-06-21 20:02:17,963 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-06-21 20:02:17,964 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 20:02:18,046 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 20:02:18,047 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 20:02:18,211 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 20:02:18,212 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 20:02:18,305 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 20:02:18,305 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 20:02:18,305 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:02:18 BoogieIcfgContainer [2024-06-21 20:02:18,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 20:02:18,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 20:02:18,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 20:02:18,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 20:02:18,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 08:02:17" (1/4) ... [2024-06-21 20:02:18,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a28db6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:02:18, skipping insertion in model container [2024-06-21 20:02:18,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:02:17" (2/4) ... [2024-06-21 20:02:18,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a28db6f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:02:18, skipping insertion in model container [2024-06-21 20:02:18,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:02:17" (3/4) ... [2024-06-21 20:02:18,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a28db6f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:02:18, skipping insertion in model container [2024-06-21 20:02:18,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:02:18" (4/4) ... [2024-06-21 20:02:18,312 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2024-06-21 20:02:18,328 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 20:02:18,328 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 20:02:18,328 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 20:02:18,381 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-21 20:02:18,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 55 transitions, 138 flow [2024-06-21 20:02:18,436 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2024-06-21 20:02:18,438 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-21 20:02:18,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 0/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-21 20:02:18,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 55 transitions, 138 flow [2024-06-21 20:02:18,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 45 transitions, 102 flow [2024-06-21 20:02:18,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 20:02:18,468 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=false, 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;@2903f115, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 20:02:18,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 20:02:18,471 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 20:02:18,473 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 20:02:18,474 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:02:18,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:18,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 20:02:18,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:18,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:18,479 INFO L85 PathProgramCache]: Analyzing trace with hash 237533242, now seen corresponding path program 1 times [2024-06-21 20:02:18,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:18,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734537541] [2024-06-21 20:02:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:18,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:18,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:18,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734537541] [2024-06-21 20:02:18,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734537541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:18,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:18,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 20:02:18,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709395046] [2024-06-21 20:02:18,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:18,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 20:02:18,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:18,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 20:02:18,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 20:02:18,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-06-21 20:02:18,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:18,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:18,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-06-21 20:02:18,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:19,907 INFO L124 PetriNetUnfolderBase]: 7973/11887 cut-off events. [2024-06-21 20:02:19,907 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-06-21 20:02:19,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23069 conditions, 11887 events. 7973/11887 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 72043 event pairs, 4535 based on Foata normal form. 9/11678 useless extension candidates. Maximal degree in co-relation 23056. Up to 10819 conditions per place. [2024-06-21 20:02:19,982 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 47 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-06-21 20:02:19,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 251 flow [2024-06-21 20:02:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:02:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:02:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-21 20:02:19,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2024-06-21 20:02:19,997 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 104 transitions. [2024-06-21 20:02:19,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 251 flow [2024-06-21 20:02:20,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 20:02:20,009 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 137 flow [2024-06-21 20:02:20,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-21 20:02:20,015 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2024-06-21 20:02:20,015 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 137 flow [2024-06-21 20:02:20,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:20,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:20,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:20,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 20:02:20,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:20,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:20,017 INFO L85 PathProgramCache]: Analyzing trace with hash 637084125, now seen corresponding path program 1 times [2024-06-21 20:02:20,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:20,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938454487] [2024-06-21 20:02:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:20,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:20,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:20,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938454487] [2024-06-21 20:02:20,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938454487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:20,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:20,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:02:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942988339] [2024-06-21 20:02:20,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:20,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:02:20,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:20,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:02:20,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:02:20,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-21 20:02:20,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:20,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:20,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-21 20:02:20,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:21,364 INFO L124 PetriNetUnfolderBase]: 12553/18106 cut-off events. [2024-06-21 20:02:21,365 INFO L125 PetriNetUnfolderBase]: For 2961/2961 co-relation queries the response was YES. [2024-06-21 20:02:21,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39812 conditions, 18106 events. 12553/18106 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 106983 event pairs, 6762 based on Foata normal form. 115/18135 useless extension candidates. Maximal degree in co-relation 39800. Up to 16792 conditions per place. [2024-06-21 20:02:21,684 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 61 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-06-21 20:02:21,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 353 flow [2024-06-21 20:02:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:02:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:02:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-21 20:02:21,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2024-06-21 20:02:21,689 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 137 flow. Second operand 4 states and 134 transitions. [2024-06-21 20:02:21,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 353 flow [2024-06-21 20:02:21,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:02:21,692 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 192 flow [2024-06-21 20:02:21,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-06-21 20:02:21,693 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-06-21 20:02:21,693 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 192 flow [2024-06-21 20:02:21,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:21,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:21,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 20:02:21,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:21,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1725227283, now seen corresponding path program 1 times [2024-06-21 20:02:21,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:21,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681381052] [2024-06-21 20:02:21,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:21,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:21,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:21,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681381052] [2024-06-21 20:02:21,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681381052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:21,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:21,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:02:21,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222643690] [2024-06-21 20:02:21,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:21,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:02:21,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:21,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:02:21,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:02:21,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-21 20:02:21,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-06-21 20:02:21,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:21,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-21 20:02:21,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:23,075 INFO L124 PetriNetUnfolderBase]: 11740/17100 cut-off events. [2024-06-21 20:02:23,076 INFO L125 PetriNetUnfolderBase]: For 9422/9422 co-relation queries the response was YES. [2024-06-21 20:02:23,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43890 conditions, 17100 events. 11740/17100 cut-off events. For 9422/9422 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 101943 event pairs, 4126 based on Foata normal form. 339/17270 useless extension candidates. Maximal degree in co-relation 43876. Up to 13739 conditions per place. [2024-06-21 20:02:23,168 INFO L140 encePairwiseOnDemand]: 40/55 looper letters, 81 selfloop transitions, 21 changer transitions 0/111 dead transitions. [2024-06-21 20:02:23,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 111 transitions, 588 flow [2024-06-21 20:02:23,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:02:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:02:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-06-21 20:02:23,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6327272727272727 [2024-06-21 20:02:23,172 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 192 flow. Second operand 5 states and 174 transitions. [2024-06-21 20:02:23,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 111 transitions, 588 flow [2024-06-21 20:02:23,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 111 transitions, 572 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-21 20:02:23,177 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 345 flow [2024-06-21 20:02:23,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-21 20:02:23,178 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2024-06-21 20:02:23,178 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 345 flow [2024-06-21 20:02:23,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-06-21 20:02:23,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:23,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:23,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 20:02:23,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:23,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:23,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1913777988, now seen corresponding path program 1 times [2024-06-21 20:02:23,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:23,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556724860] [2024-06-21 20:02:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:23,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:23,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:23,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556724860] [2024-06-21 20:02:23,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556724860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:23,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:23,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:02:23,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237657844] [2024-06-21 20:02:23,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:23,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:02:23,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:02:23,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:02:23,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-21 20:02:23,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:23,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:23,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-21 20:02:23,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:24,637 INFO L124 PetriNetUnfolderBase]: 11526/16755 cut-off events. [2024-06-21 20:02:24,637 INFO L125 PetriNetUnfolderBase]: For 27421/27430 co-relation queries the response was YES. [2024-06-21 20:02:24,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53614 conditions, 16755 events. 11526/16755 cut-off events. For 27421/27430 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 99581 event pairs, 3905 based on Foata normal form. 110/16702 useless extension candidates. Maximal degree in co-relation 53597. Up to 13709 conditions per place. [2024-06-21 20:02:24,738 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 81 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-06-21 20:02:24,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 107 transitions, 671 flow [2024-06-21 20:02:24,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:02:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:02:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-06-21 20:02:24,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.610909090909091 [2024-06-21 20:02:24,740 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 345 flow. Second operand 5 states and 168 transitions. [2024-06-21 20:02:24,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 107 transitions, 671 flow [2024-06-21 20:02:24,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 107 transitions, 663 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-21 20:02:24,746 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 375 flow [2024-06-21 20:02:24,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-06-21 20:02:24,747 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2024-06-21 20:02:24,747 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 375 flow [2024-06-21 20:02:24,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:02:24,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:24,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:24,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 20:02:24,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:24,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:24,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1287653364, now seen corresponding path program 1 times [2024-06-21 20:02:24,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:24,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176966840] [2024-06-21 20:02:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:24,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:24,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176966840] [2024-06-21 20:02:24,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176966840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:24,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:24,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:02:24,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378290429] [2024-06-21 20:02:24,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:24,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:02:24,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:24,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:02:24,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:02:24,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-06-21 20:02:24,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 375 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-06-21 20:02:24,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:24,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-06-21 20:02:24,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:26,230 INFO L124 PetriNetUnfolderBase]: 11842/17691 cut-off events. [2024-06-21 20:02:26,230 INFO L125 PetriNetUnfolderBase]: For 36007/36021 co-relation queries the response was YES. [2024-06-21 20:02:26,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58429 conditions, 17691 events. 11842/17691 cut-off events. For 36007/36021 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 111207 event pairs, 4815 based on Foata normal form. 50/17428 useless extension candidates. Maximal degree in co-relation 58409. Up to 15313 conditions per place. [2024-06-21 20:02:26,416 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 92 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-21 20:02:26,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 121 transitions, 840 flow [2024-06-21 20:02:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:02:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:02:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-21 20:02:26,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-06-21 20:02:26,419 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 375 flow. Second operand 6 states and 185 transitions. [2024-06-21 20:02:26,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 121 transitions, 840 flow [2024-06-21 20:02:26,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 121 transitions, 798 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-21 20:02:26,473 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 506 flow [2024-06-21 20:02:26,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-06-21 20:02:26,475 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2024-06-21 20:02:26,475 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 506 flow [2024-06-21 20:02:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-06-21 20:02:26,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:26,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:26,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 20:02:26,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:26,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -469017365, now seen corresponding path program 1 times [2024-06-21 20:02:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:26,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445903935] [2024-06-21 20:02:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:26,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:26,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445903935] [2024-06-21 20:02:26,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445903935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:26,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:26,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:02:26,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139213210] [2024-06-21 20:02:26,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:26,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:02:26,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:26,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:02:26,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:02:26,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-21 20:02:26,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-06-21 20:02:26,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:26,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-21 20:02:26,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:27,860 INFO L124 PetriNetUnfolderBase]: 12933/18999 cut-off events. [2024-06-21 20:02:27,860 INFO L125 PetriNetUnfolderBase]: For 52045/52048 co-relation queries the response was YES. [2024-06-21 20:02:27,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64419 conditions, 18999 events. 12933/18999 cut-off events. For 52045/52048 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 116330 event pairs, 4573 based on Foata normal form. 716/19540 useless extension candidates. Maximal degree in co-relation 64398. Up to 15514 conditions per place. [2024-06-21 20:02:27,984 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 130 selfloop transitions, 25 changer transitions 0/163 dead transitions. [2024-06-21 20:02:27,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 163 transitions, 1152 flow [2024-06-21 20:02:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:02:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:02:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-06-21 20:02:27,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2024-06-21 20:02:27,985 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 506 flow. Second operand 6 states and 214 transitions. [2024-06-21 20:02:27,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 163 transitions, 1152 flow [2024-06-21 20:02:28,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 163 transitions, 1142 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-21 20:02:28,024 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 695 flow [2024-06-21 20:02:28,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=695, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2024-06-21 20:02:28,025 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-06-21 20:02:28,025 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 695 flow [2024-06-21 20:02:28,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-06-21 20:02:28,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:28,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:28,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 20:02:28,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:28,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash -484254485, now seen corresponding path program 2 times [2024-06-21 20:02:28,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:28,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028746054] [2024-06-21 20:02:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:28,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:28,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:28,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028746054] [2024-06-21 20:02:28,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028746054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:28,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:28,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:02:28,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952952697] [2024-06-21 20:02:28,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:28,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:02:28,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:28,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:02:28,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:02:28,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-21 20:02:28,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 695 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-06-21 20:02:28,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:28,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-21 20:02:28,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:30,155 INFO L124 PetriNetUnfolderBase]: 13238/19672 cut-off events. [2024-06-21 20:02:30,155 INFO L125 PetriNetUnfolderBase]: For 82162/82169 co-relation queries the response was YES. [2024-06-21 20:02:30,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74943 conditions, 19672 events. 13238/19672 cut-off events. For 82162/82169 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 123676 event pairs, 4519 based on Foata normal form. 74/19568 useless extension candidates. Maximal degree in co-relation 74917. Up to 15670 conditions per place. [2024-06-21 20:02:30,279 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 125 selfloop transitions, 41 changer transitions 0/174 dead transitions. [2024-06-21 20:02:30,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 174 transitions, 1396 flow [2024-06-21 20:02:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:02:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:02:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 242 transitions. [2024-06-21 20:02:30,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-21 20:02:30,281 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 695 flow. Second operand 8 states and 242 transitions. [2024-06-21 20:02:30,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 174 transitions, 1396 flow [2024-06-21 20:02:30,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 174 transitions, 1355 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-21 20:02:30,395 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 911 flow [2024-06-21 20:02:30,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2024-06-21 20:02:30,396 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-06-21 20:02:30,396 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 911 flow [2024-06-21 20:02:30,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-06-21 20:02:30,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:30,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:30,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 20:02:30,400 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:30,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:30,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1654100145, now seen corresponding path program 1 times [2024-06-21 20:02:30,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:30,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005704469] [2024-06-21 20:02:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:30,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:30,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:30,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005704469] [2024-06-21 20:02:30,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005704469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:30,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:30,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:02:30,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940098849] [2024-06-21 20:02:30,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:30,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:02:30,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:02:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:02:30,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-06-21 20:02:30,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 911 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) [2024-06-21 20:02:30,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:30,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-06-21 20:02:30,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:31,330 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 18#L740true, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), 49#L740true, Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-21 20:02:31,331 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2024-06-21 20:02:31,331 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-06-21 20:02:31,331 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-06-21 20:02:31,331 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-06-21 20:02:31,363 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 18#L740true, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 14#readerEXITtrue, 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-21 20:02:31,363 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-06-21 20:02:31,367 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-21 20:02:31,367 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-21 20:02:31,367 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-21 20:02:31,491 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), 49#L740true, Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), 26#readerEXITtrue, Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-21 20:02:31,491 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-06-21 20:02:31,491 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-21 20:02:31,491 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-21 20:02:31,491 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-21 20:02:31,520 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), 26#readerEXITtrue, Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 14#readerEXITtrue, 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-21 20:02:31,521 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-21 20:02:31,521 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-21 20:02:31,521 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-21 20:02:31,521 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-21 20:02:31,547 INFO L124 PetriNetUnfolderBase]: 6894/12602 cut-off events. [2024-06-21 20:02:31,548 INFO L125 PetriNetUnfolderBase]: For 83584/85528 co-relation queries the response was YES. [2024-06-21 20:02:31,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47527 conditions, 12602 events. 6894/12602 cut-off events. For 83584/85528 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 103359 event pairs, 2376 based on Foata normal form. 703/12692 useless extension candidates. Maximal degree in co-relation 47498. Up to 4120 conditions per place. [2024-06-21 20:02:31,631 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 61 selfloop transitions, 15 changer transitions 0/125 dead transitions. [2024-06-21 20:02:31,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 125 transitions, 1018 flow [2024-06-21 20:02:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:02:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:02:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-06-21 20:02:31,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2024-06-21 20:02:31,633 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 911 flow. Second operand 4 states and 164 transitions. [2024-06-21 20:02:31,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 125 transitions, 1018 flow [2024-06-21 20:02:31,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 125 transitions, 954 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-21 20:02:31,726 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 796 flow [2024-06-21 20:02:31,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=796, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2024-06-21 20:02:31,726 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2024-06-21 20:02:31,727 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 796 flow [2024-06-21 20:02:31,727 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) [2024-06-21 20:02:31,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:31,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:31,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 20:02:31,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:31,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:31,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1542756500, now seen corresponding path program 1 times [2024-06-21 20:02:31,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:31,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070132639] [2024-06-21 20:02:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:31,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:31,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:31,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070132639] [2024-06-21 20:02:31,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070132639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:31,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:31,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:02:31,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777044550] [2024-06-21 20:02:31,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:31,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:02:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:31,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:02:31,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:02:31,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-21 20:02:31,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 796 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-06-21 20:02:31,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:31,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-21 20:02:31,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:33,845 INFO L124 PetriNetUnfolderBase]: 16080/24925 cut-off events. [2024-06-21 20:02:33,845 INFO L125 PetriNetUnfolderBase]: For 144284/144290 co-relation queries the response was YES. [2024-06-21 20:02:33,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95964 conditions, 24925 events. 16080/24925 cut-off events. For 144284/144290 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 172839 event pairs, 2297 based on Foata normal form. 468/25290 useless extension candidates. Maximal degree in co-relation 95932. Up to 9441 conditions per place. [2024-06-21 20:02:34,028 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 166 selfloop transitions, 38 changer transitions 0/212 dead transitions. [2024-06-21 20:02:34,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 212 transitions, 2018 flow [2024-06-21 20:02:34,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:02:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:02:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-06-21 20:02:34,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.693939393939394 [2024-06-21 20:02:34,030 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 796 flow. Second operand 6 states and 229 transitions. [2024-06-21 20:02:34,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 212 transitions, 2018 flow [2024-06-21 20:02:34,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 212 transitions, 1998 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-21 20:02:34,487 INFO L231 Difference]: Finished difference. Result has 100 places, 112 transitions, 1276 flow [2024-06-21 20:02:34,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1276, PETRI_PLACES=100, PETRI_TRANSITIONS=112} [2024-06-21 20:02:34,491 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2024-06-21 20:02:34,491 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 112 transitions, 1276 flow [2024-06-21 20:02:34,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-06-21 20:02:34,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:34,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:34,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 20:02:34,492 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:34,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:34,493 INFO L85 PathProgramCache]: Analyzing trace with hash -250988446, now seen corresponding path program 1 times [2024-06-21 20:02:34,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:34,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372822978] [2024-06-21 20:02:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:34,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:34,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:34,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372822978] [2024-06-21 20:02:34,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372822978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:34,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:34,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:02:34,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205983672] [2024-06-21 20:02:34,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:34,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:02:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:34,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:02:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:02:34,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-21 20:02:34,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 112 transitions, 1276 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-21 20:02:34,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:34,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-21 20:02:34,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:36,653 INFO L124 PetriNetUnfolderBase]: 14991/23653 cut-off events. [2024-06-21 20:02:36,653 INFO L125 PetriNetUnfolderBase]: For 164972/165092 co-relation queries the response was YES. [2024-06-21 20:02:36,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100008 conditions, 23653 events. 14991/23653 cut-off events. For 164972/165092 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 166715 event pairs, 6181 based on Foata normal form. 82/23550 useless extension candidates. Maximal degree in co-relation 99971. Up to 20163 conditions per place. [2024-06-21 20:02:36,831 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 128 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2024-06-21 20:02:36,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 153 transitions, 1772 flow [2024-06-21 20:02:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:02:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:02:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-21 20:02:36,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745454545454546 [2024-06-21 20:02:36,835 INFO L175 Difference]: Start difference. First operand has 100 places, 112 transitions, 1276 flow. Second operand 5 states and 158 transitions. [2024-06-21 20:02:36,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 153 transitions, 1772 flow [2024-06-21 20:02:37,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 153 transitions, 1684 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-06-21 20:02:37,342 INFO L231 Difference]: Finished difference. Result has 104 places, 114 transitions, 1246 flow [2024-06-21 20:02:37,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1246, PETRI_PLACES=104, PETRI_TRANSITIONS=114} [2024-06-21 20:02:37,343 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2024-06-21 20:02:37,345 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 114 transitions, 1246 flow [2024-06-21 20:02:37,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-21 20:02:37,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:37,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:37,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 20:02:37,346 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:37,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:37,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1761621262, now seen corresponding path program 1 times [2024-06-21 20:02:37,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:37,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660793339] [2024-06-21 20:02:37,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:37,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:37,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:37,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660793339] [2024-06-21 20:02:37,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660793339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:37,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:37,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:02:37,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401335838] [2024-06-21 20:02:37,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:37,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:02:37,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:37,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:02:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:02:37,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-06-21 20:02:37,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 114 transitions, 1246 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-06-21 20:02:37,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:37,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-06-21 20:02:37,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:40,480 INFO L124 PetriNetUnfolderBase]: 13836/22231 cut-off events. [2024-06-21 20:02:40,480 INFO L125 PetriNetUnfolderBase]: For 152311/152661 co-relation queries the response was YES. [2024-06-21 20:02:40,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93316 conditions, 22231 events. 13836/22231 cut-off events. For 152311/152661 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 162161 event pairs, 6143 based on Foata normal form. 88/21971 useless extension candidates. Maximal degree in co-relation 93277. Up to 18935 conditions per place. [2024-06-21 20:02:40,623 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 130 selfloop transitions, 17 changer transitions 0/167 dead transitions. [2024-06-21 20:02:40,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 167 transitions, 1800 flow [2024-06-21 20:02:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:02:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:02:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-21 20:02:40,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484848484848485 [2024-06-21 20:02:40,625 INFO L175 Difference]: Start difference. First operand has 104 places, 114 transitions, 1246 flow. Second operand 6 states and 181 transitions. [2024-06-21 20:02:40,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 167 transitions, 1800 flow [2024-06-21 20:02:40,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 1750 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-21 20:02:40,887 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 1294 flow [2024-06-21 20:02:40,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1294, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2024-06-21 20:02:40,888 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-06-21 20:02:40,888 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 1294 flow [2024-06-21 20:02:40,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-06-21 20:02:40,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:40,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:02:40,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 20:02:40,889 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:40,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:40,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1760173171, now seen corresponding path program 1 times [2024-06-21 20:02:40,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:40,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434181526] [2024-06-21 20:02:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:40,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:40,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:40,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434181526] [2024-06-21 20:02:40,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434181526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:40,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:40,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:02:40,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899429946] [2024-06-21 20:02:40,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:40,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:02:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:02:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:02:41,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-21 20:02:41,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 1294 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2024-06-21 20:02:41,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:41,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-21 20:02:41,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:44,416 INFO L124 PetriNetUnfolderBase]: 21872/33555 cut-off events. [2024-06-21 20:02:44,416 INFO L125 PetriNetUnfolderBase]: For 232258/232416 co-relation queries the response was YES. [2024-06-21 20:02:44,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139653 conditions, 33555 events. 21872/33555 cut-off events. For 232258/232416 co-relation queries the response was YES. Maximal size of possible extension queue 1445. Compared 240379 event pairs, 5396 based on Foata normal form. 392/33775 useless extension candidates. Maximal degree in co-relation 139613. Up to 16003 conditions per place. [2024-06-21 20:02:44,715 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 267 selfloop transitions, 59 changer transitions 0/336 dead transitions. [2024-06-21 20:02:44,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 336 transitions, 3268 flow [2024-06-21 20:02:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-21 20:02:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-21 20:02:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 460 transitions. [2024-06-21 20:02:44,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-06-21 20:02:44,717 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 1294 flow. Second operand 15 states and 460 transitions. [2024-06-21 20:02:44,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 336 transitions, 3268 flow [2024-06-21 20:02:45,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 336 transitions, 3246 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-21 20:02:45,109 INFO L231 Difference]: Finished difference. Result has 125 places, 137 transitions, 1764 flow [2024-06-21 20:02:45,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1764, PETRI_PLACES=125, PETRI_TRANSITIONS=137} [2024-06-21 20:02:45,110 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 67 predicate places. [2024-06-21 20:02:45,110 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 137 transitions, 1764 flow [2024-06-21 20:02:45,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2024-06-21 20:02:45,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:45,110 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] [2024-06-21 20:02:45,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 20:02:45,111 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:45,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1269204984, now seen corresponding path program 1 times [2024-06-21 20:02:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:45,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026699564] [2024-06-21 20:02:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:45,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:45,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:45,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026699564] [2024-06-21 20:02:45,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026699564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:45,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:45,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:02:45,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418976235] [2024-06-21 20:02:45,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:45,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:02:45,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:45,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:02:45,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:02:45,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-21 20:02:45,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 137 transitions, 1764 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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) [2024-06-21 20:02:45,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:45,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-21 20:02:45,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:48,942 INFO L124 PetriNetUnfolderBase]: 23800/36635 cut-off events. [2024-06-21 20:02:48,943 INFO L125 PetriNetUnfolderBase]: For 311882/312044 co-relation queries the response was YES. [2024-06-21 20:02:49,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163094 conditions, 36635 events. 23800/36635 cut-off events. For 311882/312044 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 268241 event pairs, 5439 based on Foata normal form. 392/36839 useless extension candidates. Maximal degree in co-relation 163048. Up to 16003 conditions per place. [2024-06-21 20:02:49,256 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 252 selfloop transitions, 53 changer transitions 0/315 dead transitions. [2024-06-21 20:02:49,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 315 transitions, 3658 flow [2024-06-21 20:02:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:02:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:02:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 377 transitions. [2024-06-21 20:02:49,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5712121212121212 [2024-06-21 20:02:49,258 INFO L175 Difference]: Start difference. First operand has 125 places, 137 transitions, 1764 flow. Second operand 12 states and 377 transitions. [2024-06-21 20:02:49,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 315 transitions, 3658 flow [2024-06-21 20:02:50,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 315 transitions, 3499 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-21 20:02:50,146 INFO L231 Difference]: Finished difference. Result has 129 places, 150 transitions, 1987 flow [2024-06-21 20:02:50,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1987, PETRI_PLACES=129, PETRI_TRANSITIONS=150} [2024-06-21 20:02:50,146 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 71 predicate places. [2024-06-21 20:02:50,146 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 150 transitions, 1987 flow [2024-06-21 20:02:50,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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) [2024-06-21 20:02:50,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:50,147 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] [2024-06-21 20:02:50,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 20:02:50,147 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:50,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:50,148 INFO L85 PathProgramCache]: Analyzing trace with hash 712447058, now seen corresponding path program 1 times [2024-06-21 20:02:50,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:50,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490406471] [2024-06-21 20:02:50,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:50,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:50,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:50,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490406471] [2024-06-21 20:02:50,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490406471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:50,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:50,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:02:50,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203328376] [2024-06-21 20:02:50,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:50,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:02:50,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:02:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:02:50,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-21 20:02:50,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 150 transitions, 1987 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2024-06-21 20:02:50,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:50,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-21 20:02:50,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:54,617 INFO L124 PetriNetUnfolderBase]: 23813/36280 cut-off events. [2024-06-21 20:02:54,618 INFO L125 PetriNetUnfolderBase]: For 354024/354164 co-relation queries the response was YES. [2024-06-21 20:02:54,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167222 conditions, 36280 events. 23813/36280 cut-off events. For 354024/354164 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 263197 event pairs, 3565 based on Foata normal form. 516/36528 useless extension candidates. Maximal degree in co-relation 167172. Up to 16842 conditions per place. [2024-06-21 20:02:55,014 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 173 selfloop transitions, 62 changer transitions 6/253 dead transitions. [2024-06-21 20:02:55,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 253 transitions, 3286 flow [2024-06-21 20:02:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:02:55,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:02:55,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-06-21 20:02:55,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-06-21 20:02:55,015 INFO L175 Difference]: Start difference. First operand has 129 places, 150 transitions, 1987 flow. Second operand 6 states and 213 transitions. [2024-06-21 20:02:55,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 253 transitions, 3286 flow [2024-06-21 20:02:56,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 253 transitions, 3174 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 20:02:56,254 INFO L231 Difference]: Finished difference. Result has 129 places, 156 transitions, 2245 flow [2024-06-21 20:02:56,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2245, PETRI_PLACES=129, PETRI_TRANSITIONS=156} [2024-06-21 20:02:56,255 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 71 predicate places. [2024-06-21 20:02:56,255 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 156 transitions, 2245 flow [2024-06-21 20:02:56,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2024-06-21 20:02:56,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:02:56,256 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] [2024-06-21 20:02:56,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 20:02:56,256 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:02:56,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:02:56,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1401074127, now seen corresponding path program 1 times [2024-06-21 20:02:56,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:02:56,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850143175] [2024-06-21 20:02:56,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:02:56,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:02:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:02:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:02:56,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:02:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850143175] [2024-06-21 20:02:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850143175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:02:56,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:02:56,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:02:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156495906] [2024-06-21 20:02:56,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:02:56,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:02:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:02:56,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:02:56,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:02:56,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-21 20:02:56,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 156 transitions, 2245 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2024-06-21 20:02:56,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:02:56,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-21 20:02:56,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:02:59,645 INFO L124 PetriNetUnfolderBase]: 22020/33685 cut-off events. [2024-06-21 20:02:59,646 INFO L125 PetriNetUnfolderBase]: For 368011/368301 co-relation queries the response was YES. [2024-06-21 20:03:00,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165265 conditions, 33685 events. 22020/33685 cut-off events. For 368011/368301 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 243744 event pairs, 9066 based on Foata normal form. 154/33523 useless extension candidates. Maximal degree in co-relation 165213. Up to 30502 conditions per place. [2024-06-21 20:03:00,305 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 187 selfloop transitions, 35 changer transitions 0/234 dead transitions. [2024-06-21 20:03:00,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 234 transitions, 3091 flow [2024-06-21 20:03:00,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:03:00,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:03:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2024-06-21 20:03:00,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204545454545455 [2024-06-21 20:03:00,307 INFO L175 Difference]: Start difference. First operand has 129 places, 156 transitions, 2245 flow. Second operand 8 states and 229 transitions. [2024-06-21 20:03:00,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 234 transitions, 3091 flow [2024-06-21 20:03:01,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 234 transitions, 2907 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-21 20:03:01,874 INFO L231 Difference]: Finished difference. Result has 132 places, 161 transitions, 2234 flow [2024-06-21 20:03:01,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2234, PETRI_PLACES=132, PETRI_TRANSITIONS=161} [2024-06-21 20:03:01,876 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2024-06-21 20:03:01,876 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 161 transitions, 2234 flow [2024-06-21 20:03:01,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2024-06-21 20:03:01,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:03:01,877 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] [2024-06-21 20:03:01,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 20:03:01,877 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 20:03:01,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:03:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash -856519342, now seen corresponding path program 1 times [2024-06-21 20:03:01,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:03:01,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251036134] [2024-06-21 20:03:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:03:01,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:03:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:03:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:03:01,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:03:01,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251036134] [2024-06-21 20:03:01,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251036134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:03:01,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:03:01,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:03:01,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555644188] [2024-06-21 20:03:01,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:03:01,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:03:01,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:03:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:03:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:03:02,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-21 20:03:02,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 161 transitions, 2234 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2024-06-21 20:03:02,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:03:02,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-21 20:03:02,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand