./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_ok.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/queue_ok.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/queue_ok.i ./goblint.2024-05-21_14-57-05.files/protection/queue_ok.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-bcb38a6-m [2024-06-04 14:05:14,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:05:14,214 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:05:14,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:05:14,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:05:14,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:05:14,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:05:14,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:05:14,269 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:05:14,269 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:05:14,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:05:14,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:05:14,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:05:14,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:05:14,271 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:05:14,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:05:14,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:05:14,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:05:14,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:05:14,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:05:14,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:05:14,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:05:14,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:05:14,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:05:14,279 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:05:14,279 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:05:14,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:05:14,280 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:05:14,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:05:14,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:05:14,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:05:14,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:05:14,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:14,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:05:14,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:05:14,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:05:14,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:05:14,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:05:14,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:05:14,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:05:14,283 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:05:14,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:05:14,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:05:14,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:05:14,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:05:14,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:05:14,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:05:14,527 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:05:14,528 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:05:14,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok.i [2024-06-04 14:05:15,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:05:16,011 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:05:16,011 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i [2024-06-04 14:05:16,026 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8abfe95ae/82d48334b3e74480b90ff8bdd83c06c1/FLAG4327b378a [2024-06-04 14:05:16,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8abfe95ae/82d48334b3e74480b90ff8bdd83c06c1 [2024-06-04 14:05:16,039 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:05:16,040 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:05:16,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/queue_ok.yml/witness.yml [2024-06-04 14:05:16,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:05:16,117 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:05:16,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:16,118 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:05:16,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:05:16,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:16" (1/2) ... [2024-06-04 14:05:16,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14aa5a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:16, skipping insertion in model container [2024-06-04 14:05:16,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:16" (1/2) ... [2024-06-04 14:05:16,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11734c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:16, skipping insertion in model container [2024-06-04 14:05:16,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:16" (2/2) ... [2024-06-04 14:05:16,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14aa5a5a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:16, skipping insertion in model container [2024-06-04 14:05:16,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:16" (2/2) ... [2024-06-04 14:05:16,126 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:05:16,157 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:05:16,158 INFO L97 edCorrectnessWitness]: Location invariant before [L1054-L1054] ! multithreaded || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 20) && queue.tail <= 20) [2024-06-04 14:05:16,158 INFO L97 edCorrectnessWitness]: Location invariant before [L1053-L1053] ! multithreaded || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 20) && queue.tail <= 20) [2024-06-04 14:05:16,158 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-04 14:05:16,159 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:05:16,159 INFO L106 edCorrectnessWitness]: ghost_update [L1026-L1026] m_locked = 1; [2024-06-04 14:05:16,160 INFO L106 edCorrectnessWitness]: ghost_update [L1008-L1008] m_locked = 1; [2024-06-04 14:05:16,160 INFO L106 edCorrectnessWitness]: ghost_update [L1052-L1052] multithreaded = 1; [2024-06-04 14:05:16,160 INFO L106 edCorrectnessWitness]: ghost_update [L1039-L1039] m_locked = 0; [2024-06-04 14:05:16,160 INFO L106 edCorrectnessWitness]: ghost_update [L1020-L1020] m_locked = 0; [2024-06-04 14:05:16,202 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:05:16,870 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:16,890 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:05:17,121 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:17,184 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:05:17,185 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17 WrapperNode [2024-06-04 14:05:17,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:17,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:17,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:05:17,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:05:17,192 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 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,224 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 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,277 INFO L138 Inliner]: procedures = 274, calls = 235, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 938 [2024-06-04 14:05:17,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:17,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:05:17,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:05:17,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:05:17,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,309 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,355 INFO L175 MemorySlicer]: Split 218 memory accesses to 4 slices as follows [2, 5, 3, 208]. 95 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 13 writes are split as follows [0, 0, 2, 11]. [2024-06-04 14:05:17,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,356 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:05:17,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:05:17,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:05:17,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:05:17,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (1/1) ... [2024-06-04 14:05:17,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:17,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:05:17,437 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) [2024-06-04 14:05:17,455 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 [2024-06-04 14:05:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-04 14:05:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-04 14:05:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-04 14:05:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-04 14:05:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-04 14:05:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-04 14:05:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-04 14:05:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-04 14:05:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-04 14:05:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-04 14:05:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-04 14:05:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-04 14:05:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-04 14:05:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-04 14:05:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:05:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:05:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 14:05:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-04 14:05:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-04 14:05:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:05:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:05:17,475 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:05:17,612 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:05:17,614 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:05:18,339 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:05:18,340 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:05:19,882 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:05:19,883 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-04 14:05:19,884 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:19 BoogieIcfgContainer [2024-06-04 14:05:19,885 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:05:19,887 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:05:19,888 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:05:19,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:05:19,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:05:16" (1/4) ... [2024-06-04 14:05:19,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aab99b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:05:19, skipping insertion in model container [2024-06-04 14:05:19,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:16" (2/4) ... [2024-06-04 14:05:19,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aab99b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:05:19, skipping insertion in model container [2024-06-04 14:05:19,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:17" (3/4) ... [2024-06-04 14:05:19,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aab99b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:05:19, skipping insertion in model container [2024-06-04 14:05:19,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:19" (4/4) ... [2024-06-04 14:05:19,895 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2024-06-04 14:05:19,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:05:19,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:05:19,910 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:05:19,961 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-04 14:05:19,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 84 flow [2024-06-04 14:05:20,036 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-06-04 14:05:20,037 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-04 14:05:20,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 4/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-06-04 14:05:20,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 84 flow [2024-06-04 14:05:20,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 31 transitions, 71 flow [2024-06-04 14:05:20,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:05:20,228 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;@40ae4956, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:05:20,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:05:20,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:05:20,237 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 14:05:20,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:05:20,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:20,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:05:20,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:20,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:20,257 INFO L85 PathProgramCache]: Analyzing trace with hash -261479139, now seen corresponding path program 1 times [2024-06-04 14:05:20,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:20,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204796017] [2024-06-04 14:05:20,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:20,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:21,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:21,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204796017] [2024-06-04 14:05:21,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204796017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:21,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:21,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:05:21,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860334520] [2024-06-04 14:05:21,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:21,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:05:21,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:21,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:05:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:05:21,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-06-04 14:05:21,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-06-04 14:05:21,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:21,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-06-04 14:05:21,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:21,636 INFO L124 PetriNetUnfolderBase]: 490/815 cut-off events. [2024-06-04 14:05:21,636 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-06-04 14:05:21,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 815 events. 490/815 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3572 event pairs, 175 based on Foata normal form. 0/701 useless extension candidates. Maximal degree in co-relation 1488. Up to 440 conditions per place. [2024-06-04 14:05:21,642 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 44 selfloop transitions, 6 changer transitions 6/61 dead transitions. [2024-06-04 14:05:21,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 61 transitions, 249 flow [2024-06-04 14:05:21,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-04 14:05:21,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-06-04 14:05:21,654 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 71 flow. Second operand 5 states and 93 transitions. [2024-06-04 14:05:21,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 61 transitions, 249 flow [2024-06-04 14:05:21,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 61 transitions, 241 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:21,660 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 102 flow [2024-06-04 14:05:21,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-06-04 14:05:21,664 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2024-06-04 14:05:21,664 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 102 flow [2024-06-04 14:05:21,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-06-04 14:05:21,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:21,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:21,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:05:21,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:21,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1347682380, now seen corresponding path program 1 times [2024-06-04 14:05:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:21,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939972758] [2024-06-04 14:05:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:21,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:22,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:22,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939972758] [2024-06-04 14:05:22,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939972758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:22,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:22,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:05:22,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448390260] [2024-06-04 14:05:22,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:22,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:05:22,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:05:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:05:22,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-06-04 14:05:22,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-06-04 14:05:22,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:22,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-06-04 14:05:22,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:22,496 INFO L124 PetriNetUnfolderBase]: 385/645 cut-off events. [2024-06-04 14:05:22,496 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-06-04 14:05:22,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 645 events. 385/645 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2736 event pairs, 102 based on Foata normal form. 77/684 useless extension candidates. Maximal degree in co-relation 1398. Up to 279 conditions per place. [2024-06-04 14:05:22,502 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 34 selfloop transitions, 3 changer transitions 28/70 dead transitions. [2024-06-04 14:05:22,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 70 transitions, 315 flow [2024-06-04 14:05:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-06-04 14:05:22,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-04 14:05:22,508 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 102 flow. Second operand 5 states and 100 transitions. [2024-06-04 14:05:22,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 70 transitions, 315 flow [2024-06-04 14:05:22,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-04 14:05:22,515 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 117 flow [2024-06-04 14:05:22,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-06-04 14:05:22,516 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2024-06-04 14:05:22,516 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 117 flow [2024-06-04 14:05:22,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-06-04 14:05:22,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:22,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:22,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:05:22,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:22,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:22,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1603291655, now seen corresponding path program 1 times [2024-06-04 14:05:22,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:22,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948281364] [2024-06-04 14:05:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:22,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:22,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948281364] [2024-06-04 14:05:22,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948281364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:22,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:22,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:05:22,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191507502] [2024-06-04 14:05:22,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:22,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:05:22,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:22,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:05:22,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:05:22,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-06-04 14:05:22,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-04 14:05:22,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:22,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-06-04 14:05:22,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:23,267 INFO L124 PetriNetUnfolderBase]: 302/559 cut-off events. [2024-06-04 14:05:23,267 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-06-04 14:05:23,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 559 events. 302/559 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2484 event pairs, 80 based on Foata normal form. 8/537 useless extension candidates. Maximal degree in co-relation 1323. Up to 218 conditions per place. [2024-06-04 14:05:23,270 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 53 selfloop transitions, 9 changer transitions 2/69 dead transitions. [2024-06-04 14:05:23,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 344 flow [2024-06-04 14:05:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-04 14:05:23,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-06-04 14:05:23,272 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 117 flow. Second operand 6 states and 106 transitions. [2024-06-04 14:05:23,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 344 flow [2024-06-04 14:05:23,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 334 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:23,275 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 176 flow [2024-06-04 14:05:23,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-04 14:05:23,276 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2024-06-04 14:05:23,276 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 176 flow [2024-06-04 14:05:23,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-04 14:05:23,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:23,276 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:23,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:05:23,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:23,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:23,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1837544768, now seen corresponding path program 2 times [2024-06-04 14:05:23,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:23,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392832622] [2024-06-04 14:05:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:23,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:23,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392832622] [2024-06-04 14:05:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392832622] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 14:05:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085755636] [2024-06-04 14:05:23,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-04 14:05:23,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:05:23,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:05:24,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 14:05:24,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-04 14:05:24,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-04 14:05:24,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 14:05:24,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 20 conjunts are in the unsatisfiable core [2024-06-04 14:05:24,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 14:05:24,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-06-04 14:05:24,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 153 [2024-06-04 14:05:24,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 137 [2024-06-04 14:05:24,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:05:24,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:05:24,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2024-06-04 14:05:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:24,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 14:05:24,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-04 14:05:24,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-04 14:05:24,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-04 14:05:24,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-04 14:05:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:26,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085755636] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 14:05:26,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 14:05:26,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-06-04 14:05:26,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195054890] [2024-06-04 14:05:26,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 14:05:26,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:05:26,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:26,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:05:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:05:26,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-06-04 14:05:26,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 176 flow. Second operand has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 states have internal predecessors, (131), 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) [2024-06-04 14:05:26,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:26,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-06-04 14:05:26,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:27,815 INFO L124 PetriNetUnfolderBase]: 770/1351 cut-off events. [2024-06-04 14:05:27,815 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-06-04 14:05:27,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3773 conditions, 1351 events. 770/1351 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6971 event pairs, 74 based on Foata normal form. 36/1382 useless extension candidates. Maximal degree in co-relation 3560. Up to 213 conditions per place. [2024-06-04 14:05:27,823 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 128 selfloop transitions, 48 changer transitions 4/185 dead transitions. [2024-06-04 14:05:27,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 185 transitions, 1066 flow [2024-06-04 14:05:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-04 14:05:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-04 14:05:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 318 transitions. [2024-06-04 14:05:27,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542857142857143 [2024-06-04 14:05:27,825 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 176 flow. Second operand 20 states and 318 transitions. [2024-06-04 14:05:27,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 185 transitions, 1066 flow [2024-06-04 14:05:27,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 185 transitions, 1037 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-04 14:05:27,830 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 600 flow [2024-06-04 14:05:27,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=600, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2024-06-04 14:05:27,831 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2024-06-04 14:05:27,831 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 600 flow [2024-06-04 14:05:27,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 states have internal predecessors, (131), 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) [2024-06-04 14:05:27,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:27,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:27,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-04 14:05:28,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:05:28,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:28,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1056692538, now seen corresponding path program 1 times [2024-06-04 14:05:28,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:28,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774574093] [2024-06-04 14:05:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:28,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:28,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:28,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774574093] [2024-06-04 14:05:28,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774574093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:28,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:28,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:05:28,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463212936] [2024-06-04 14:05:28,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:28,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:05:28,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:28,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:05:28,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:05:28,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-06-04 14:05:28,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 600 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-06-04 14:05:28,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:28,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-06-04 14:05:28,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:29,255 INFO L124 PetriNetUnfolderBase]: 1227/2064 cut-off events. [2024-06-04 14:05:29,255 INFO L125 PetriNetUnfolderBase]: For 2525/2525 co-relation queries the response was YES. [2024-06-04 14:05:29,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6068 conditions, 2064 events. 1227/2064 cut-off events. For 2525/2525 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10867 event pairs, 366 based on Foata normal form. 168/2225 useless extension candidates. Maximal degree in co-relation 5938. Up to 1437 conditions per place. [2024-06-04 14:05:29,269 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 84 selfloop transitions, 7 changer transitions 30/126 dead transitions. [2024-06-04 14:05:29,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 126 transitions, 1021 flow [2024-06-04 14:05:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-04 14:05:29,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-06-04 14:05:29,271 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 600 flow. Second operand 6 states and 118 transitions. [2024-06-04 14:05:29,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 126 transitions, 1021 flow [2024-06-04 14:05:29,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 126 transitions, 834 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:29,282 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 469 flow [2024-06-04 14:05:29,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-06-04 14:05:29,284 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 43 predicate places. [2024-06-04 14:05:29,284 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 469 flow [2024-06-04 14:05:29,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-06-04 14:05:29,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:29,285 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:29,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:05:29,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:29,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:29,286 INFO L85 PathProgramCache]: Analyzing trace with hash 933151231, now seen corresponding path program 2 times [2024-06-04 14:05:29,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:29,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152402901] [2024-06-04 14:05:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:29,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:30,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:30,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152402901] [2024-06-04 14:05:30,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152402901] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 14:05:30,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127488737] [2024-06-04 14:05:30,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-04 14:05:30,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:05:30,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:05:30,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 14:05:30,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-04 14:05:30,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-04 14:05:30,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 14:05:30,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 26 conjunts are in the unsatisfiable core [2024-06-04 14:05:30,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 14:05:30,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-06-04 14:05:30,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 128 [2024-06-04 14:05:30,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 120 [2024-06-04 14:05:31,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:05:31,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 63 [2024-06-04 14:05:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:31,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 14:05:31,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-04 14:05:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:32,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127488737] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 14:05:32,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 14:05:32,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 16 [2024-06-04 14:05:32,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986602543] [2024-06-04 14:05:32,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 14:05:32,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-06-04 14:05:32,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:32,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-06-04 14:05:32,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-06-04 14:05:32,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-06-04 14:05:32,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 469 flow. Second operand has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 18 states have internal predecessors, (150), 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) [2024-06-04 14:05:32,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:32,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-06-04 14:05:32,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:36,401 INFO L124 PetriNetUnfolderBase]: 1786/3127 cut-off events. [2024-06-04 14:05:36,402 INFO L125 PetriNetUnfolderBase]: For 4342/4342 co-relation queries the response was YES. [2024-06-04 14:05:36,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8817 conditions, 3127 events. 1786/3127 cut-off events. For 4342/4342 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 18898 event pairs, 127 based on Foata normal form. 668/3791 useless extension candidates. Maximal degree in co-relation 8691. Up to 521 conditions per place. [2024-06-04 14:05:36,414 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 119 selfloop transitions, 42 changer transitions 245/410 dead transitions. [2024-06-04 14:05:36,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 410 transitions, 2343 flow [2024-06-04 14:05:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-06-04 14:05:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-06-04 14:05:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 585 transitions. [2024-06-04 14:05:36,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2024-06-04 14:05:36,417 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 469 flow. Second operand 35 states and 585 transitions. [2024-06-04 14:05:36,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 410 transitions, 2343 flow [2024-06-04 14:05:36,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 410 transitions, 2325 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 14:05:36,431 INFO L231 Difference]: Finished difference. Result has 133 places, 92 transitions, 767 flow [2024-06-04 14:05:36,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=767, PETRI_PLACES=133, PETRI_TRANSITIONS=92} [2024-06-04 14:05:36,433 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 99 predicate places. [2024-06-04 14:05:36,433 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 92 transitions, 767 flow [2024-06-04 14:05:36,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 18 states have internal predecessors, (150), 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) [2024-06-04 14:05:36,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:36,434 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:36,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-04 14:05:36,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-06-04 14:05:36,650 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:36,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash -222352256, now seen corresponding path program 3 times [2024-06-04 14:05:36,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:36,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810309580] [2024-06-04 14:05:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:38,388 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:38,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:38,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810309580] [2024-06-04 14:05:38,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810309580] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 14:05:38,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509064544] [2024-06-04 14:05:38,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-04 14:05:38,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:05:38,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:05:38,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 14:05:38,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-04 14:05:39,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-06-04 14:05:39,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 14:05:39,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 36 conjunts are in the unsatisfiable core [2024-06-04 14:05:39,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 14:05:39,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-06-04 14:05:39,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 111 [2024-06-04 14:05:39,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 103 [2024-06-04 14:05:39,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 108 [2024-06-04 14:05:39,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 126 [2024-06-04 14:05:39,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 118 [2024-06-04 14:05:39,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:05:39,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2024-06-04 14:05:39,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:05:39,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:05:39,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 66 [2024-06-04 14:05:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:39,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 14:05:39,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-04 14:05:39,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-04 14:05:39,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-04 14:05:39,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-04 14:05:39,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-04 14:05:40,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:05:40,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 106 [2024-06-04 14:05:40,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:05:40,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 329 treesize of output 185 [2024-06-04 14:05:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:43,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509064544] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 14:05:43,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 14:05:43,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-06-04 14:05:43,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937827994] [2024-06-04 14:05:43,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 14:05:43,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-06-04 14:05:43,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:43,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-06-04 14:05:43,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2024-06-04 14:05:43,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-06-04 14:05:43,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 92 transitions, 767 flow. Second operand has 26 states, 26 states have (on average 8.73076923076923) internal successors, (227), 26 states have internal predecessors, (227), 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) [2024-06-04 14:05:43,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:43,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-06-04 14:05:43,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:52,803 INFO L124 PetriNetUnfolderBase]: 1875/3479 cut-off events. [2024-06-04 14:05:52,803 INFO L125 PetriNetUnfolderBase]: For 46587/46625 co-relation queries the response was YES. [2024-06-04 14:05:52,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15853 conditions, 3479 events. 1875/3479 cut-off events. For 46587/46625 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 21871 event pairs, 181 based on Foata normal form. 68/3531 useless extension candidates. Maximal degree in co-relation 15497. Up to 563 conditions per place. [2024-06-04 14:05:52,838 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 253 selfloop transitions, 180 changer transitions 49/487 dead transitions. [2024-06-04 14:05:52,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 487 transitions, 3515 flow [2024-06-04 14:05:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-06-04 14:05:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-06-04 14:05:52,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 801 transitions. [2024-06-04 14:05:52,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-04 14:05:52,842 INFO L175 Difference]: Start difference. First operand has 133 places, 92 transitions, 767 flow. Second operand 54 states and 801 transitions. [2024-06-04 14:05:52,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 487 transitions, 3515 flow [2024-06-04 14:05:52,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 487 transitions, 3382 flow, removed 55 selfloop flow, removed 23 redundant places. [2024-06-04 14:05:52,885 INFO L231 Difference]: Finished difference. Result has 164 places, 213 transitions, 2143 flow [2024-06-04 14:05:52,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2143, PETRI_PLACES=164, PETRI_TRANSITIONS=213} [2024-06-04 14:05:52,886 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 130 predicate places. [2024-06-04 14:05:52,886 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 213 transitions, 2143 flow [2024-06-04 14:05:52,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.73076923076923) internal successors, (227), 26 states have internal predecessors, (227), 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) [2024-06-04 14:05:52,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:52,887 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:52,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-04 14:05:53,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:05:53,104 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:53,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:53,104 INFO L85 PathProgramCache]: Analyzing trace with hash 528253129, now seen corresponding path program 3 times [2024-06-04 14:05:53,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:53,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496651148] [2024-06-04 14:05:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:53,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:55,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:55,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496651148] [2024-06-04 14:05:55,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496651148] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 14:05:55,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744218963] [2024-06-04 14:05:55,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-04 14:05:55,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:05:55,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:05:55,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 14:05:55,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-04 14:05:56,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-06-04 14:05:56,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 14:05:56,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 71 conjunts are in the unsatisfiable core [2024-06-04 14:05:56,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 14:05:56,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-06-04 14:05:56,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 114 [2024-06-04 14:05:56,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:05:56,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:05:56,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 119 [2024-06-04 14:05:56,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:05:56,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:05:56,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 137 [2024-06-04 14:05:56,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2024-06-04 14:05:56,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 142 [2024-06-04 14:05:56,990 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-06-04 14:05:57,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 100 [2024-06-04 14:05:57,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 147 [2024-06-04 14:05:57,079 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-06-04 14:05:57,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 117 [2024-06-04 14:05:57,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 139 [2024-06-04 14:05:57,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 82 [2024-06-04 14:05:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:57,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 14:05:57,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-04 14:05:57,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-04 14:05:57,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-04 14:05:57,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-04 14:05:59,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:05:59,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:05:59,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 63 [2024-06-04 14:05:59,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:05:59,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 49 [2024-06-04 14:06:00,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 51 [2024-06-04 14:06:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:01,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744218963] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 14:06:01,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 14:06:01,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 10] total 29 [2024-06-04 14:06:01,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677252281] [2024-06-04 14:06:01,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 14:06:01,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-06-04 14:06:01,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-06-04 14:06:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2024-06-04 14:06:01,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-06-04 14:06:01,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 213 transitions, 2143 flow. Second operand has 31 states, 31 states have (on average 7.741935483870968) internal successors, (240), 31 states have internal predecessors, (240), 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) [2024-06-04 14:06:01,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:01,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-06-04 14:06:01,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:22,023 INFO L124 PetriNetUnfolderBase]: 3995/7052 cut-off events. [2024-06-04 14:06:22,023 INFO L125 PetriNetUnfolderBase]: For 77449/77449 co-relation queries the response was YES. [2024-06-04 14:06:22,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33843 conditions, 7052 events. 3995/7052 cut-off events. For 77449/77449 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 48446 event pairs, 110 based on Foata normal form. 1698/8746 useless extension candidates. Maximal degree in co-relation 33602. Up to 1399 conditions per place. [2024-06-04 14:06:22,077 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 252 selfloop transitions, 142 changer transitions 376/774 dead transitions. [2024-06-04 14:06:22,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 774 transitions, 7193 flow [2024-06-04 14:06:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-06-04 14:06:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-06-04 14:06:22,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 909 transitions. [2024-06-04 14:06:22,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-06-04 14:06:22,084 INFO L175 Difference]: Start difference. First operand has 164 places, 213 transitions, 2143 flow. Second operand 54 states and 909 transitions. [2024-06-04 14:06:22,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 774 transitions, 7193 flow [2024-06-04 14:06:22,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 774 transitions, 5928 flow, removed 597 selfloop flow, removed 11 redundant places. [2024-06-04 14:06:22,230 INFO L231 Difference]: Finished difference. Result has 253 places, 250 transitions, 2598 flow [2024-06-04 14:06:22,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2598, PETRI_PLACES=253, PETRI_TRANSITIONS=250} [2024-06-04 14:06:22,234 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 219 predicate places. [2024-06-04 14:06:22,234 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 250 transitions, 2598 flow [2024-06-04 14:06:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.741935483870968) internal successors, (240), 31 states have internal predecessors, (240), 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) [2024-06-04 14:06:22,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:22,234 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:22,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-06-04 14:06:22,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:06:22,448 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:06:22,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1176088576, now seen corresponding path program 4 times [2024-06-04 14:06:22,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:22,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945474597] [2024-06-04 14:06:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:22,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:27,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:27,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945474597] [2024-06-04 14:06:27,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945474597] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 14:06:27,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706488935] [2024-06-04 14:06:27,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-04 14:06:27,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:06:27,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:06:27,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 14:06:27,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-04 14:06:27,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-04 14:06:27,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 14:06:27,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 62 conjunts are in the unsatisfiable core [2024-06-04 14:06:27,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 14:06:27,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-06-04 14:06:27,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 132 [2024-06-04 14:06:27,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:06:27,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 158 [2024-06-04 14:06:27,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 146 [2024-06-04 14:06:27,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:06:28,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 155 [2024-06-04 14:06:28,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:06:28,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 164 [2024-06-04 14:06:28,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:06:28,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 173 [2024-06-04 14:06:28,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 182 [2024-06-04 14:06:28,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:06:28,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:06:28,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 191 [2024-06-04 14:06:28,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 200 [2024-06-04 14:06:28,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:06:29,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:06:29,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 209 [2024-06-04 14:06:30,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 218 [2024-06-04 14:06:30,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 257 treesize of output 227 [2024-06-04 14:06:30,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:06:31,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 236 [2024-06-04 14:06:31,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:06:32,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 304 treesize of output 266 [2024-06-04 14:06:34,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 174 [2024-06-04 14:06:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:34,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 14:06:34,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:34,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2024-06-04 14:06:35,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:35,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2024-06-04 14:06:35,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-06-04 14:06:35,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 34 [2024-06-04 14:06:35,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:35,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 34 [2024-06-04 14:06:35,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:06:35,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:06:35,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:35,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:06:35,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:35,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 104 [2024-06-04 14:06:36,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:36,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 468 treesize of output 264 [2024-06-04 14:06:36,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:06:37,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:37,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 578 treesize of output 326 [2024-06-04 14:06:37,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:06:37,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:06:38,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:06:38,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:38,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:38,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 94 [2024-06-04 14:06:38,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-06-04 14:06:38,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:06:38,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:06:38,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:06:38,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:38,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 96 [2024-06-04 14:06:38,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 94 [2024-06-04 14:06:38,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:06:39,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:06:40,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:40,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1024 treesize of output 580 [2024-06-04 14:06:40,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:06:41,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 57 [2024-06-04 14:06:43,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:43,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1302 treesize of output 738 [2024-06-04 14:06:46,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:46,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1441 treesize of output 817 [2024-06-04 14:06:50,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:50,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:50,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 184 [2024-06-04 14:06:50,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:50,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:50,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 332 treesize of output 184 [2024-06-04 14:06:51,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-04 14:06:51,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:06:51,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:06:51,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:06:51,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:51,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:06:51,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 334 treesize of output 186 [2024-06-04 14:06:51,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:51,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:51,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:06:51,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:51,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:51,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:51,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:06:51,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:07:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:01,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706488935] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 14:07:01,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 14:07:01,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2024-06-04 14:07:01,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355626251] [2024-06-04 14:07:01,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 14:07:01,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-06-04 14:07:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-06-04 14:07:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=1957, Unknown=0, NotChecked=0, Total=2450 [2024-06-04 14:07:01,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-06-04 14:07:01,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 250 transitions, 2598 flow. Second operand has 50 states, 50 states have (on average 8.38) internal successors, (419), 50 states have internal predecessors, (419), 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) [2024-06-04 14:07:01,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:01,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-06-04 14:07:01,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:33,502 INFO L124 PetriNetUnfolderBase]: 2854/5464 cut-off events. [2024-06-04 14:08:33,503 INFO L125 PetriNetUnfolderBase]: For 152308/152310 co-relation queries the response was YES. [2024-06-04 14:08:33,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32433 conditions, 5464 events. 2854/5464 cut-off events. For 152308/152310 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 37210 event pairs, 113 based on Foata normal form. 62/5522 useless extension candidates. Maximal degree in co-relation 31895. Up to 959 conditions per place. [2024-06-04 14:08:33,552 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 304 selfloop transitions, 367 changer transitions 82/758 dead transitions. [2024-06-04 14:08:33,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 758 transitions, 7759 flow [2024-06-04 14:08:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-06-04 14:08:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2024-06-04 14:08:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 952 transitions. [2024-06-04 14:08:33,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-04 14:08:33,555 INFO L175 Difference]: Start difference. First operand has 253 places, 250 transitions, 2598 flow. Second operand 62 states and 952 transitions. [2024-06-04 14:08:33,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 758 transitions, 7759 flow [2024-06-04 14:08:33,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 758 transitions, 7422 flow, removed 109 selfloop flow, removed 41 redundant places. [2024-06-04 14:08:33,821 INFO L231 Difference]: Finished difference. Result has 269 places, 403 transitions, 4636 flow [2024-06-04 14:08:33,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=4636, PETRI_PLACES=269, PETRI_TRANSITIONS=403} [2024-06-04 14:08:33,822 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 235 predicate places. [2024-06-04 14:08:33,822 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 403 transitions, 4636 flow [2024-06-04 14:08:33,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.38) internal successors, (419), 50 states have internal predecessors, (419), 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) [2024-06-04 14:08:33,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:33,823 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:33,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-04 14:08:34,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:08:34,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:34,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:34,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1294169929, now seen corresponding path program 4 times [2024-06-04 14:08:34,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:34,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618414884] [2024-06-04 14:08:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:34,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:40,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618414884] [2024-06-04 14:08:40,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618414884] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 14:08:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346798882] [2024-06-04 14:08:40,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-04 14:08:40,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:08:40,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:08:40,552 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 14:08:40,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-04 14:08:41,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-04 14:08:41,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 14:08:41,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 60 conjunts are in the unsatisfiable core [2024-06-04 14:08:41,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 14:08:41,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-06-04 14:08:41,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2024-06-04 14:08:41,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 103 [2024-06-04 14:08:41,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 108 [2024-06-04 14:08:41,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 126 [2024-06-04 14:08:41,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 73 [2024-06-04 14:08:41,335 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-06-04 14:08:41,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 131 [2024-06-04 14:08:41,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 98 [2024-06-04 14:08:41,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2024-06-04 14:08:41,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 128 [2024-06-04 14:08:41,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 133 [2024-06-04 14:08:41,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 138 [2024-06-04 14:08:41,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 143 [2024-06-04 14:08:41,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 148 [2024-06-04 14:08:41,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 153 [2024-06-04 14:08:41,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 158 [2024-06-04 14:08:41,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:41,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 163 [2024-06-04 14:08:41,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-04 14:08:42,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 106 [2024-06-04 14:08:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:42,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 14:08:42,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-04 14:08:42,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:08:42,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 106 [2024-06-04 14:08:42,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:08:42,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 34 [2024-06-04 14:08:42,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-04 14:08:42,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:08:42,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:08:42,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2024-06-04 14:08:43,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:08:43,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 34 [2024-06-04 14:08:43,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:08:43,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:08:43,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:08:43,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:08:43,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 283 treesize of output 163 [2024-06-04 14:08:43,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:08:43,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:08:43,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 94 [2024-06-04 14:08:43,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:08:43,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:08:43,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 94 [2024-06-04 14:08:43,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:08:43,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 8 [2024-06-04 14:08:43,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:08:43,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-06-04 14:08:43,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:08:43,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:08:44,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:08:45,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:08:46,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:08:46,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:08:46,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:08:46,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-06-04 14:08:46,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:08:46,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:08:46,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:08:46,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:08:46,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-04 14:08:46,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-04 14:08:46,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:08:46,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 111 [2024-06-04 14:08:46,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 109 [2024-06-04 14:08:46,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-04 14:08:46,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:08:46,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 109 [2024-06-04 14:08:47,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:08:51,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:08:51,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2024-06-04 14:08:53,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-04 14:08:53,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1490 treesize of output 850 [2024-06-04 14:08:54,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:08:56,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-04 14:09:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:07,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346798882] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 14:09:07,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 14:09:07,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2024-06-04 14:09:07,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040355726] [2024-06-04 14:09:07,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 14:09:07,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-06-04 14:09:07,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-06-04 14:09:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=1957, Unknown=0, NotChecked=0, Total=2450 [2024-06-04 14:09:07,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-06-04 14:09:07,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 403 transitions, 4636 flow. Second operand has 50 states, 50 states have (on average 8.56) internal successors, (428), 50 states have internal predecessors, (428), 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) [2024-06-04 14:09:07,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:07,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-06-04 14:09:07,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:44,795 INFO L124 PetriNetUnfolderBase]: 3183/5976 cut-off events. [2024-06-04 14:09:44,795 INFO L125 PetriNetUnfolderBase]: For 132341/132342 co-relation queries the response was YES. [2024-06-04 14:09:44,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36642 conditions, 5976 events. 3183/5976 cut-off events. For 132341/132342 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 40069 event pairs, 119 based on Foata normal form. 452/6424 useless extension candidates. Maximal degree in co-relation 36438. Up to 1056 conditions per place. [2024-06-04 14:09:44,858 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 373 selfloop transitions, 216 changer transitions 266/860 dead transitions. [2024-06-04 14:09:44,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 860 transitions, 9666 flow [2024-06-04 14:09:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-06-04 14:09:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-06-04 14:09:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 925 transitions. [2024-06-04 14:09:44,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393586005830904 [2024-06-04 14:09:44,866 INFO L175 Difference]: Start difference. First operand has 269 places, 403 transitions, 4636 flow. Second operand 49 states and 925 transitions. [2024-06-04 14:09:44,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 860 transitions, 9666 flow [2024-06-04 14:09:45,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 860 transitions, 8893 flow, removed 267 selfloop flow, removed 21 redundant places. [2024-06-04 14:09:45,148 INFO L231 Difference]: Finished difference. Result has 321 places, 403 transitions, 4614 flow [2024-06-04 14:09:45,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3983, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=4614, PETRI_PLACES=321, PETRI_TRANSITIONS=403} [2024-06-04 14:09:45,149 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 287 predicate places. [2024-06-04 14:09:45,149 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 403 transitions, 4614 flow [2024-06-04 14:09:45,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.56) internal successors, (428), 50 states have internal predecessors, (428), 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) [2024-06-04 14:09:45,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:45,152 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:45,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-06-04 14:09:45,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:09:45,365 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:45,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:45,366 INFO L85 PathProgramCache]: Analyzing trace with hash 679446855, now seen corresponding path program 5 times [2024-06-04 14:09:45,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:45,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023262018] [2024-06-04 14:09:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:45,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 190 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:45,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:45,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023262018] [2024-06-04 14:09:45,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023262018] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 14:09:45,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032145692] [2024-06-04 14:09:45,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-04 14:09:45,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 14:09:45,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:09:45,872 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 14:09:45,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15