./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/circular_buffer_ok.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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-deagle/circular_buffer_ok.i ./goblint.2024-05-07_14-17-48.files/protection/circular_buffer_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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:56:22,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:56:22,270 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:56:22,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:56:22,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:56:22,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:56:22,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:56:22,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:56:22,298 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:56:22,298 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:56:22,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:56:22,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:56:22,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:56:22,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:56:22,302 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:56:22,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:56:22,303 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:56:22,306 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:56:22,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:56:22,307 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:56:22,307 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:56:22,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:56:22,308 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:56:22,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:56:22,308 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:56:22,308 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:56:22,309 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:56:22,309 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:56:22,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:56:22,310 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:56:22,310 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:56:22,311 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:56:22,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:56:22,311 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:56:22,311 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:56:22,312 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:56:22,312 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:56:22,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:56:22,312 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:56:22,312 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:56:22,313 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:56:22,313 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:56:22,313 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:56:22,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:56:22,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:56:22,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:56:22,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:56:22,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:56:22,615 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:56:22,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2024-05-12 12:56:23,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:56:24,025 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:56:24,026 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2024-05-12 12:56:24,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41adee483/20451343c3934dfcbaef70cb59f4f028/FLAG09584bd9c [2024-05-12 12:56:24,053 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41adee483/20451343c3934dfcbaef70cb59f4f028 [2024-05-12 12:56:24,055 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:56:24,056 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:56:24,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/circular_buffer_ok.yml/witness.yml [2024-05-12 12:56:24,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:56:24,138 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:56:24,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:56:24,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:56:24,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:56:24,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:56:24" (1/2) ... [2024-05-12 12:56:24,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13054b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:24, skipping insertion in model container [2024-05-12 12:56:24,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:56:24" (1/2) ... [2024-05-12 12:56:24,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b658153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:24, skipping insertion in model container [2024-05-12 12:56:24,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:24" (2/2) ... [2024-05-12 12:56:24,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13054b15 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24, skipping insertion in model container [2024-05-12 12:56:24,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:24" (2/2) ... [2024-05-12 12:56:24,150 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:56:24,181 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:56:24,183 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] ! multithreaded || (0 <= value && value <= 6) [2024-05-12 12:56:24,183 INFO L97 edCorrectnessWitness]: Location invariant before [L765-L765] ! multithreaded || (0 <= value && value <= 6) [2024-05-12 12:56:24,183 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:56:24,183 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-05-12 12:56:24,184 INFO L106 edCorrectnessWitness]: ghost_update [L763-L763] multithreaded = 1; [2024-05-12 12:56:24,184 INFO L106 edCorrectnessWitness]: ghost_update [L753-L753] m_locked = 0; [2024-05-12 12:56:24,185 INFO L106 edCorrectnessWitness]: ghost_update [L745-L745] m_locked = 1; [2024-05-12 12:56:24,185 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] m_locked = 1; [2024-05-12 12:56:24,185 INFO L106 edCorrectnessWitness]: ghost_update [L736-L736] m_locked = 0; [2024-05-12 12:56:24,219 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:56:24,597 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2024-05-12 12:56:24,606 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2024-05-12 12:56:24,614 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2024-05-12 12:56:24,624 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:56:24,638 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-05-12 12:56:24,706 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] Start Parsing Local [2024-05-12 12:56:24,709 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] Start Parsing Local Start Parsing Local [2024-05-12 12:56:24,711 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:56:24,723 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:56:24,765 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:56:24,765 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24 WrapperNode [2024-05-12 12:56:24,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:56:24,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:56:24,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:56:24,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:56:24,773 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 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,797 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 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,827 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2024-05-12 12:56:24,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:56:24,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:56:24,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:56:24,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:56:24,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,859 INFO L175 MemorySlicer]: Split 18 memory accesses to 6 slices as follows [2, 1, 3, 8, 2, 2]. 44 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 0, 8, 0, 0]. The 4 writes are split as follows [0, 0, 2, 0, 1, 1]. [2024-05-12 12:56:24,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,887 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:56:24,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:56:24,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:56:24,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:56:24,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (1/1) ... [2024-05-12 12:56:24,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:56:24,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:24,937 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) [2024-05-12 12:56:24,939 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 [2024-05-12 12:56:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:56:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:56:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:56:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 12:56:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 12:56:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-05-12 12:56:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-05-12 12:56:24,968 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-05-12 12:56:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-05-12 12:56:24,968 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-05-12 12:56:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:56:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:56:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:56:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:56:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 12:56:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-05-12 12:56:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 12:56:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:56:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:56:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:56:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-05-12 12:56:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-05-12 12:56:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-05-12 12:56:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-05-12 12:56:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-05-12 12:56:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-05-12 12:56:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:56:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:56:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:56:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:56:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 12:56:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-05-12 12:56:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 12:56:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:56:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:56:24,975 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:56:25,114 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:56:25,116 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:56:25,438 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:56:25,438 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:56:25,693 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:56:25,694 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-05-12 12:56:25,694 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:56:25 BoogieIcfgContainer [2024-05-12 12:56:25,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:56:25,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:56:25,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:56:25,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:56:25,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:56:24" (1/4) ... [2024-05-12 12:56:25,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64eaa86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:56:25, skipping insertion in model container [2024-05-12 12:56:25,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:24" (2/4) ... [2024-05-12 12:56:25,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64eaa86a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:56:25, skipping insertion in model container [2024-05-12 12:56:25,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:24" (3/4) ... [2024-05-12 12:56:25,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64eaa86a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:56:25, skipping insertion in model container [2024-05-12 12:56:25,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:56:25" (4/4) ... [2024-05-12 12:56:25,708 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-05-12 12:56:25,724 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:56:25,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 12:56:25,725 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:56:25,783 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-12 12:56:25,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 53 transitions, 120 flow [2024-05-12 12:56:25,855 INFO L124 PetriNetUnfolderBase]: 8/51 cut-off events. [2024-05-12 12:56:25,856 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-05-12 12:56:25,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 8/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-05-12 12:56:25,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 53 transitions, 120 flow [2024-05-12 12:56:25,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 49 transitions, 107 flow [2024-05-12 12:56:25,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:56:25,891 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;@14aa46cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:56:25,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-05-12 12:56:25,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:56:25,896 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:56:25,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:56:25,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:25,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:56:25,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:25,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:25,902 INFO L85 PathProgramCache]: Analyzing trace with hash -731451056, now seen corresponding path program 1 times [2024-05-12 12:56:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:25,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358545382] [2024-05-12 12:56:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:25,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:26,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:26,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358545382] [2024-05-12 12:56:26,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358545382] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:26,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:26,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:56:26,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033944338] [2024-05-12 12:56:26,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:26,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:26,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:26,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:26,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-05-12 12:56:26,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) [2024-05-12 12:56:26,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:26,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-05-12 12:56:26,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:26,671 INFO L124 PetriNetUnfolderBase]: 1491/2656 cut-off events. [2024-05-12 12:56:26,671 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-05-12 12:56:26,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4926 conditions, 2656 events. 1491/2656 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 15125 event pairs, 569 based on Foata normal form. 221/2451 useless extension candidates. Maximal degree in co-relation 4740. Up to 1290 conditions per place. [2024-05-12 12:56:26,693 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 59 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-05-12 12:56:26,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 283 flow [2024-05-12 12:56:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-05-12 12:56:26,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2024-05-12 12:56:26,707 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 107 flow. Second operand 3 states and 111 transitions. [2024-05-12 12:56:26,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 283 flow [2024-05-12 12:56:26,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 275 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 12:56:26,723 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 110 flow [2024-05-12 12:56:26,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-05-12 12:56:26,728 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-05-12 12:56:26,728 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 110 flow [2024-05-12 12:56:26,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) [2024-05-12 12:56:26,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:26,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:26,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:56:26,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:26,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:26,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1330374324, now seen corresponding path program 1 times [2024-05-12 12:56:26,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:26,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039790811] [2024-05-12 12:56:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:26,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:26,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 12:56:26,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116365901] [2024-05-12 12:56:26,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:26,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:26,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:26,804 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) [2024-05-12 12:56:26,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 12:56:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:26,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-12 12:56:26,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:27,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 12:56:27,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:27,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039790811] [2024-05-12 12:56:27,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 12:56:27,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116365901] [2024-05-12 12:56:27,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116365901] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:27,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:27,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:56:27,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668152034] [2024-05-12 12:56:27,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:27,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:27,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:27,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:31,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-05-12 12:56:31,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-05-12 12:56:31,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-05-12 12:56:31,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:31,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-05-12 12:56:31,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:31,420 INFO L124 PetriNetUnfolderBase]: 1461/2524 cut-off events. [2024-05-12 12:56:31,420 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-05-12 12:56:31,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4918 conditions, 2524 events. 1461/2524 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 13014 event pairs, 1132 based on Foata normal form. 0/2256 useless extension candidates. Maximal degree in co-relation 3644. Up to 2225 conditions per place. [2024-05-12 12:56:31,433 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 33 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2024-05-12 12:56:31,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 174 flow [2024-05-12 12:56:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-05-12 12:56:31,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-05-12 12:56:31,435 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 110 flow. Second operand 3 states and 76 transitions. [2024-05-12 12:56:31,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 174 flow [2024-05-12 12:56:31,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:31,437 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 106 flow [2024-05-12 12:56:31,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-05-12 12:56:31,438 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-05-12 12:56:31,438 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 106 flow [2024-05-12 12:56:31,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-05-12 12:56:31,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:31,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:31,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:31,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:31,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:31,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:31,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1708037550, now seen corresponding path program 1 times [2024-05-12 12:56:31,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:31,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790318084] [2024-05-12 12:56:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:31,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:31,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:31,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790318084] [2024-05-12 12:56:31,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790318084] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:31,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:31,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:56:31,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755992299] [2024-05-12 12:56:31,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:31,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:31,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:31,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:31,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-05-12 12:56:31,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-05-12 12:56:31,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:31,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-05-12 12:56:31,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:32,110 INFO L124 PetriNetUnfolderBase]: 1198/2117 cut-off events. [2024-05-12 12:56:32,111 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-05-12 12:56:32,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4048 conditions, 2117 events. 1198/2117 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11124 event pairs, 260 based on Foata normal form. 0/1920 useless extension candidates. Maximal degree in co-relation 4040. Up to 1293 conditions per place. [2024-05-12 12:56:32,122 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 53 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-05-12 12:56:32,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 263 flow [2024-05-12 12:56:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-05-12 12:56:32,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6289308176100629 [2024-05-12 12:56:32,124 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 106 flow. Second operand 3 states and 100 transitions. [2024-05-12 12:56:32,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 263 flow [2024-05-12 12:56:32,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:32,127 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 117 flow [2024-05-12 12:56:32,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2024-05-12 12:56:32,128 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-05-12 12:56:32,128 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 117 flow [2024-05-12 12:56:32,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-05-12 12:56:32,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:32,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:32,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:56:32,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:32,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:32,129 INFO L85 PathProgramCache]: Analyzing trace with hash -717303577, now seen corresponding path program 1 times [2024-05-12 12:56:32,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:32,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240132310] [2024-05-12 12:56:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:32,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:32,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:32,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240132310] [2024-05-12 12:56:32,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240132310] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:32,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:32,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:56:32,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969668011] [2024-05-12 12:56:32,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:32,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:32,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:32,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-05-12 12:56:32,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:32,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:32,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-05-12 12:56:32,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:32,526 INFO L124 PetriNetUnfolderBase]: 1333/2454 cut-off events. [2024-05-12 12:56:32,526 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-05-12 12:56:32,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 2454 events. 1333/2454 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12759 event pairs, 638 based on Foata normal form. 71/2316 useless extension candidates. Maximal degree in co-relation 4766. Up to 1034 conditions per place. [2024-05-12 12:56:32,540 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 51 selfloop transitions, 4 changer transitions 2/69 dead transitions. [2024-05-12 12:56:32,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 286 flow [2024-05-12 12:56:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-05-12 12:56:32,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6540880503144654 [2024-05-12 12:56:32,542 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 117 flow. Second operand 3 states and 104 transitions. [2024-05-12 12:56:32,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 286 flow [2024-05-12 12:56:32,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:32,545 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 135 flow [2024-05-12 12:56:32,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-05-12 12:56:32,546 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2024-05-12 12:56:32,546 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 135 flow [2024-05-12 12:56:32,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:32,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:32,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:32,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:56:32,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:32,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:32,547 INFO L85 PathProgramCache]: Analyzing trace with hash 776165225, now seen corresponding path program 1 times [2024-05-12 12:56:32,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:32,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703011172] [2024-05-12 12:56:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:32,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:32,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 12:56:32,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87120359] [2024-05-12 12:56:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:32,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:32,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:32,562 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) [2024-05-12 12:56:32,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 12:56:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:32,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2024-05-12 12:56:32,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:32,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 12:56:32,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:32,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703011172] [2024-05-12 12:56:32,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 12:56:32,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87120359] [2024-05-12 12:56:32,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87120359] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:32,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:32,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:56:32,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535404653] [2024-05-12 12:56:32,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:32,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:56:32,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:56:32,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:56:32,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-05-12 12:56:32,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:32,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:32,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-05-12 12:56:32,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:33,219 INFO L124 PetriNetUnfolderBase]: 1723/3065 cut-off events. [2024-05-12 12:56:33,220 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2024-05-12 12:56:33,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6497 conditions, 3065 events. 1723/3065 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 16768 event pairs, 614 based on Foata normal form. 0/2814 useless extension candidates. Maximal degree in co-relation 6485. Up to 1416 conditions per place. [2024-05-12 12:56:33,237 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 92 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2024-05-12 12:56:33,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 109 transitions, 492 flow [2024-05-12 12:56:33,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:56:33,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:56:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-05-12 12:56:33,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5817610062893082 [2024-05-12 12:56:33,240 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 135 flow. Second operand 6 states and 185 transitions. [2024-05-12 12:56:33,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 109 transitions, 492 flow [2024-05-12 12:56:33,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:33,244 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 159 flow [2024-05-12 12:56:33,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-05-12 12:56:33,245 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2024-05-12 12:56:33,245 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 159 flow [2024-05-12 12:56:33,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:33,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:33,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:33,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:33,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:33,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:33,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:33,462 INFO L85 PathProgramCache]: Analyzing trace with hash 669373356, now seen corresponding path program 1 times [2024-05-12 12:56:33,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:33,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043587610] [2024-05-12 12:56:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:33,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:33,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 12:56:33,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740426669] [2024-05-12 12:56:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:33,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:33,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:33,481 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) [2024-05-12 12:56:33,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-12 12:56:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:33,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2024-05-12 12:56:33,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:33,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 12:56:33,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:33,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043587610] [2024-05-12 12:56:33,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 12:56:33,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740426669] [2024-05-12 12:56:33,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740426669] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:33,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:33,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:56:33,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718356740] [2024-05-12 12:56:33,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:33,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:56:33,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:33,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:56:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:56:33,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-05-12 12:56:33,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-05-12 12:56:33,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:33,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-05-12 12:56:33,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:34,176 INFO L124 PetriNetUnfolderBase]: 3276/5768 cut-off events. [2024-05-12 12:56:34,177 INFO L125 PetriNetUnfolderBase]: For 1494/1514 co-relation queries the response was YES. [2024-05-12 12:56:34,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13356 conditions, 5768 events. 3276/5768 cut-off events. For 1494/1514 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 36262 event pairs, 1508 based on Foata normal form. 234/5629 useless extension candidates. Maximal degree in co-relation 13342. Up to 2649 conditions per place. [2024-05-12 12:56:34,218 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 86 selfloop transitions, 7 changer transitions 0/103 dead transitions. [2024-05-12 12:56:34,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 513 flow [2024-05-12 12:56:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:56:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:56:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-05-12 12:56:34,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6792452830188679 [2024-05-12 12:56:34,220 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 159 flow. Second operand 4 states and 144 transitions. [2024-05-12 12:56:34,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 513 flow [2024-05-12 12:56:34,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:34,231 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 226 flow [2024-05-12 12:56:34,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-05-12 12:56:34,234 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2024-05-12 12:56:34,234 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 226 flow [2024-05-12 12:56:34,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-05-12 12:56:34,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:34,235 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:34,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:34,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:34,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:34,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1293793322, now seen corresponding path program 1 times [2024-05-12 12:56:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:34,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999144368] [2024-05-12 12:56:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:34,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 12:56:34,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647275617] [2024-05-12 12:56:34,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:34,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:34,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:34,471 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) [2024-05-12 12:56:34,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-05-12 12:56:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:34,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2024-05-12 12:56:34,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:34,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 12:56:34,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:34,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999144368] [2024-05-12 12:56:34,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 12:56:34,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647275617] [2024-05-12 12:56:34,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647275617] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:34,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:34,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:56:34,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556231537] [2024-05-12 12:56:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:34,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:34,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:34,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:34,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:34,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-05-12 12:56:34,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:34,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:34,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-05-12 12:56:34,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:35,075 INFO L124 PetriNetUnfolderBase]: 2231/4140 cut-off events. [2024-05-12 12:56:35,076 INFO L125 PetriNetUnfolderBase]: For 1307/1337 co-relation queries the response was YES. [2024-05-12 12:56:35,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9484 conditions, 4140 events. 2231/4140 cut-off events. For 1307/1337 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 23127 event pairs, 861 based on Foata normal form. 0/3911 useless extension candidates. Maximal degree in co-relation 9467. Up to 1955 conditions per place. [2024-05-12 12:56:35,092 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 52 selfloop transitions, 5 changer transitions 3/70 dead transitions. [2024-05-12 12:56:35,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 369 flow [2024-05-12 12:56:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-05-12 12:56:35,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-05-12 12:56:35,094 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 226 flow. Second operand 3 states and 96 transitions. [2024-05-12 12:56:35,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 369 flow [2024-05-12 12:56:35,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:56:35,098 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 203 flow [2024-05-12 12:56:35,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-05-12 12:56:35,099 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 14 predicate places. [2024-05-12 12:56:35,099 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 203 flow [2024-05-12 12:56:35,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:35,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:35,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:35,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:35,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:35,319 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:35,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1272635531, now seen corresponding path program 1 times [2024-05-12 12:56:35,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:35,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185464751] [2024-05-12 12:56:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:35,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:35,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 12:56:35,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625742506] [2024-05-12 12:56:35,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:35,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:35,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:35,337 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) [2024-05-12 12:56:35,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-12 12:56:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:35,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2024-05-12 12:56:35,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:35,478 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 11 treesize of output 7 [2024-05-12 12:56:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:35,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 12:56:35,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:35,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185464751] [2024-05-12 12:56:35,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 12:56:35,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625742506] [2024-05-12 12:56:35,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625742506] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:35,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:35,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:56:35,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755636152] [2024-05-12 12:56:35,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:35,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:35,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:35,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:35,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:35,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-05-12 12:56:35,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-05-12 12:56:35,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:35,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-05-12 12:56:35,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:35,852 INFO L124 PetriNetUnfolderBase]: 1272/2596 cut-off events. [2024-05-12 12:56:35,852 INFO L125 PetriNetUnfolderBase]: For 1383/1401 co-relation queries the response was YES. [2024-05-12 12:56:35,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 2596 events. 1272/2596 cut-off events. For 1383/1401 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13150 event pairs, 386 based on Foata normal form. 148/2638 useless extension candidates. Maximal degree in co-relation 6132. Up to 1251 conditions per place. [2024-05-12 12:56:35,864 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 50 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-05-12 12:56:35,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 364 flow [2024-05-12 12:56:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:35,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-05-12 12:56:35,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5974842767295597 [2024-05-12 12:56:35,866 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 203 flow. Second operand 3 states and 95 transitions. [2024-05-12 12:56:35,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 364 flow [2024-05-12 12:56:35,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:56:35,870 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 201 flow [2024-05-12 12:56:35,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-05-12 12:56:35,871 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 14 predicate places. [2024-05-12 12:56:35,871 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 201 flow [2024-05-12 12:56:35,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-05-12 12:56:35,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:35,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:35,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:36,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:36,095 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:36,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash 786306439, now seen corresponding path program 1 times [2024-05-12 12:56:36,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:36,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789721740] [2024-05-12 12:56:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:36,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:36,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 12:56:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733482406] [2024-05-12 12:56:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:36,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:36,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:36,153 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) [2024-05-12 12:56:36,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-05-12 12:56:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:36,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 27 conjunts are in the unsatisfiable core [2024-05-12 12:56:36,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:36,336 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 7 treesize of output 6 [2024-05-12 12:56:36,499 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 18 treesize of output 13 [2024-05-12 12:56:36,657 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 17 treesize of output 13 [2024-05-12 12:56:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:36,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 12:56:36,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789721740] [2024-05-12 12:56:36,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 12:56:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733482406] [2024-05-12 12:56:36,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733482406] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:36,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:36,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:56:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020797164] [2024-05-12 12:56:36,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:36,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:56:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:56:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:56:36,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-05-12 12:56:36,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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) [2024-05-12 12:56:36,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:36,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-05-12 12:56:36,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:37,159 INFO L124 PetriNetUnfolderBase]: 1381/2711 cut-off events. [2024-05-12 12:56:37,159 INFO L125 PetriNetUnfolderBase]: For 1786/1786 co-relation queries the response was YES. [2024-05-12 12:56:37,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6934 conditions, 2711 events. 1381/2711 cut-off events. For 1786/1786 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13659 event pairs, 459 based on Foata normal form. 0/2628 useless extension candidates. Maximal degree in co-relation 6917. Up to 1616 conditions per place. [2024-05-12 12:56:37,174 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 93 selfloop transitions, 9 changer transitions 13/126 dead transitions. [2024-05-12 12:56:37,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 126 transitions, 657 flow [2024-05-12 12:56:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:56:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:56:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-05-12 12:56:37,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758909853249476 [2024-05-12 12:56:37,177 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 201 flow. Second operand 9 states and 227 transitions. [2024-05-12 12:56:37,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 126 transitions, 657 flow [2024-05-12 12:56:37,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 126 transitions, 640 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:37,182 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 256 flow [2024-05-12 12:56:37,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=256, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-05-12 12:56:37,183 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2024-05-12 12:56:37,183 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 256 flow [2024-05-12 12:56:37,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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) [2024-05-12 12:56:37,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:37,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:37,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:37,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:37,400 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:37,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:37,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1206163794, now seen corresponding path program 1 times [2024-05-12 12:56:37,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:37,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849650224] [2024-05-12 12:56:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:37,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:37,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 12:56:37,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914554211] [2024-05-12 12:56:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:37,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:37,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:37,418 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) [2024-05-12 12:56:37,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-05-12 12:56:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:37,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2024-05-12 12:56:37,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:37,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 12:56:37,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:37,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849650224] [2024-05-12 12:56:37,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 12:56:37,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914554211] [2024-05-12 12:56:37,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914554211] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:37,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:37,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:56:37,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58096522] [2024-05-12 12:56:37,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:37,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:56:37,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:37,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:56:37,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:56:37,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-05-12 12:56:37,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:37,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:37,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-05-12 12:56:37,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:37,862 INFO L124 PetriNetUnfolderBase]: 1187/2341 cut-off events. [2024-05-12 12:56:37,862 INFO L125 PetriNetUnfolderBase]: For 1754/1763 co-relation queries the response was YES. [2024-05-12 12:56:37,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 2341 events. 1187/2341 cut-off events. For 1754/1763 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 11601 event pairs, 933 based on Foata normal form. 0/2260 useless extension candidates. Maximal degree in co-relation 5935. Up to 1945 conditions per place. [2024-05-12 12:56:37,873 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 40 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2024-05-12 12:56:37,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 51 transitions, 321 flow [2024-05-12 12:56:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-05-12 12:56:37,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2024-05-12 12:56:37,875 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 256 flow. Second operand 3 states and 74 transitions. [2024-05-12 12:56:37,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 51 transitions, 321 flow [2024-05-12 12:56:37,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 51 transitions, 300 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-05-12 12:56:37,879 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 220 flow [2024-05-12 12:56:37,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2024-05-12 12:56:37,880 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2024-05-12 12:56:37,880 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 220 flow [2024-05-12 12:56:37,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:56:37,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:37,880 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:37,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:38,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:38,104 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:38,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:38,105 INFO L85 PathProgramCache]: Analyzing trace with hash -335160980, now seen corresponding path program 1 times [2024-05-12 12:56:38,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:38,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334207315] [2024-05-12 12:56:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:38,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:38,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 12:56:38,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320267701] [2024-05-12 12:56:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:38,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:38,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:38,122 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:56:38,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-05-12 12:56:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:38,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 7 conjunts are in the unsatisfiable core [2024-05-12 12:56:38,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:38,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:56:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:38,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:38,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334207315] [2024-05-12 12:56:38,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 12:56:38,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320267701] [2024-05-12 12:56:38,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320267701] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:56:38,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-05-12 12:56:38,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-05-12 12:56:38,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847084685] [2024-05-12 12:56:38,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-05-12 12:56:38,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:56:38,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:38,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:56:38,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:56:38,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-05-12 12:56:38,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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) [2024-05-12 12:56:38,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:38,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-05-12 12:56:38,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:39,394 INFO L124 PetriNetUnfolderBase]: 3515/7300 cut-off events. [2024-05-12 12:56:39,394 INFO L125 PetriNetUnfolderBase]: For 5841/5841 co-relation queries the response was YES. [2024-05-12 12:56:39,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17301 conditions, 7300 events. 3515/7300 cut-off events. For 5841/5841 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 47593 event pairs, 815 based on Foata normal form. 589/7784 useless extension candidates. Maximal degree in co-relation 17281. Up to 1332 conditions per place. [2024-05-12 12:56:39,490 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 199 selfloop transitions, 18 changer transitions 2/229 dead transitions. [2024-05-12 12:56:39,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 229 transitions, 1321 flow [2024-05-12 12:56:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:56:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:56:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 373 transitions. [2024-05-12 12:56:39,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6397941680960549 [2024-05-12 12:56:39,493 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 220 flow. Second operand 11 states and 373 transitions. [2024-05-12 12:56:39,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 229 transitions, 1321 flow [2024-05-12 12:56:39,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 229 transitions, 1320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:39,500 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 447 flow [2024-05-12 12:56:39,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=447, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-05-12 12:56:39,501 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 34 predicate places. [2024-05-12 12:56:39,501 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 447 flow [2024-05-12 12:56:39,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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) [2024-05-12 12:56:39,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:39,501 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:39,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:39,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-05-12 12:56:39,720 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 12:56:39,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:39,721 INFO L85 PathProgramCache]: Analyzing trace with hash -898246585, now seen corresponding path program 1 times [2024-05-12 12:56:39,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:39,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361916395] [2024-05-12 12:56:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:39,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:39,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 12:56:39,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714257017] [2024-05-12 12:56:39,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:39,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:39,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:39,739 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:56:39,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-05-12 12:56:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:40,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 52 conjunts are in the unsatisfiable core [2024-05-12 12:56:40,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:40,151 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 7 treesize of output 6 [2024-05-12 12:56:40,360 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 22 treesize of output 17 [2024-05-12 12:56:40,744 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 21 treesize of output 16 [2024-05-12 12:56:40,961 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 20 treesize of output 16 [2024-05-12 12:56:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:40,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:57:37,521 WARN L293 SmtUtils]: Spent 23.72s on a formula simplification. DAG size of input: 234 DAG size of output: 225 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 12:58:07,737 WARN L293 SmtUtils]: Spent 17.80s on a formula simplification that was a NOOP. DAG size: 225 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 12:58:41,707 WARN L293 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 121 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 12:59:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:00,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:00,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361916395] [2024-05-12 12:59:00,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 12:59:00,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714257017] [2024-05-12 12:59:00,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714257017] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:59:00,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-05-12 12:59:00,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2024-05-12 12:59:00,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993706993] [2024-05-12 12:59:00,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-05-12 12:59:00,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-05-12 12:59:00,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:00,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-05-12 12:59:00,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2024-05-12 12:59:03,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-05-12 12:59:03,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 447 flow. Second operand has 27 states, 27 states have (on average 13.592592592592593) internal successors, (367), 27 states have internal predecessors, (367), 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) [2024-05-12 12:59:03,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:03,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-05-12 12:59:03,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:29,870 WARN L293 SmtUtils]: Spent 24.84s on a formula simplification. DAG size of input: 372 DAG size of output: 304 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 12:59:44,427 WARN L293 SmtUtils]: Spent 7.71s on a formula simplification that was a NOOP. DAG size: 297 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:00:03,126 WARN L293 SmtUtils]: Spent 14.69s on a formula simplification. DAG size of input: 321 DAG size of output: 194 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:00:15,401 WARN L293 SmtUtils]: Spent 7.80s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:00:41,319 WARN L293 SmtUtils]: Spent 25.48s on a formula simplification. DAG size of input: 420 DAG size of output: 144 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:00:54,299 WARN L293 SmtUtils]: Spent 11.17s on a formula simplification that was a NOOP. DAG size: 284 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:01:52,897 WARN L293 SmtUtils]: Spent 57.30s on a formula simplification. DAG size of input: 323 DAG size of output: 297 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:02:51,279 WARN L293 SmtUtils]: Spent 50.43s on a formula simplification. DAG size of input: 336 DAG size of output: 310 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:03:27,585 WARN L293 SmtUtils]: Spent 35.97s on a formula simplification. DAG size of input: 302 DAG size of output: 297 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:03:48,725 WARN L293 SmtUtils]: Spent 20.17s on a formula simplification. DAG size of input: 431 DAG size of output: 145 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:04:20,684 WARN L293 SmtUtils]: Spent 31.07s on a formula simplification. DAG size of input: 381 DAG size of output: 228 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:04:22,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-05-12 13:04:34,919 WARN L293 SmtUtils]: Spent 11.29s on a formula simplification that was a NOOP. DAG size: 176 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:04:56,518 WARN L293 SmtUtils]: Spent 20.30s on a formula simplification. DAG size of input: 428 DAG size of output: 142 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:05:21,891 WARN L293 SmtUtils]: Spent 18.98s on a formula simplification. DAG size of input: 378 DAG size of output: 239 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:05:39,908 WARN L293 SmtUtils]: Spent 16.63s on a formula simplification. DAG size of input: 368 DAG size of output: 126 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:05:55,621 WARN L293 SmtUtils]: Spent 13.42s on a formula simplification. DAG size of input: 317 DAG size of output: 172 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:06:24,982 WARN L293 SmtUtils]: Spent 26.45s on a formula simplification. DAG size of input: 345 DAG size of output: 325 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:06:53,224 WARN L293 SmtUtils]: Spent 11.26s on a formula simplification that was a NOOP. DAG size: 353 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:07:19,837 WARN L293 SmtUtils]: Spent 25.47s on a formula simplification. DAG size of input: 364 DAG size of output: 345 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-05-12 13:07:20,815 INFO L124 PetriNetUnfolderBase]: 6074/11836 cut-off events. [2024-05-12 13:07:20,815 INFO L125 PetriNetUnfolderBase]: For 19539/19539 co-relation queries the response was YES. [2024-05-12 13:07:20,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32415 conditions, 11836 events. 6074/11836 cut-off events. For 19539/19539 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 81356 event pairs, 701 based on Foata normal form. 15/11766 useless extension candidates. Maximal degree in co-relation 32386. Up to 2914 conditions per place. [2024-05-12 13:07:20,873 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 290 selfloop transitions, 109 changer transitions 127/533 dead transitions. [2024-05-12 13:07:20,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 533 transitions, 3351 flow [2024-05-12 13:07:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-05-12 13:07:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-05-12 13:07:20,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1087 transitions. [2024-05-12 13:07:20,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37289879931389364 [2024-05-12 13:07:20,884 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 447 flow. Second operand 55 states and 1087 transitions. [2024-05-12 13:07:20,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 533 transitions, 3351 flow [2024-05-12 13:07:20,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 533 transitions, 3217 flow, removed 65 selfloop flow, removed 1 redundant places. [2024-05-12 13:07:20,947 INFO L231 Difference]: Finished difference. Result has 155 places, 158 transitions, 1422 flow [2024-05-12 13:07:20,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1422, PETRI_PLACES=155, PETRI_TRANSITIONS=158} [2024-05-12 13:07:20,949 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 107 predicate places. [2024-05-12 13:07:20,949 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 158 transitions, 1422 flow [2024-05-12 13:07:20,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 13.592592592592593) internal successors, (367), 27 states have internal predecessors, (367), 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) [2024-05-12 13:07:20,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:20,950 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:07:20,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-05-12 13:07:21,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 13:07:21,167 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 13:07:21,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2087231073, now seen corresponding path program 2 times [2024-05-12 13:07:21,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:21,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831641458] [2024-05-12 13:07:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:21,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:21,192 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 13:07:21,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152485582] [2024-05-12 13:07:21,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 13:07:21,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 13:07:21,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:07:21,196 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 13:07:21,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-05-12 13:07:21,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 13:07:21,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 13:07:21,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 43 conjunts are in the unsatisfiable core [2024-05-12 13:07:21,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 13:07:22,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-05-12 13:07:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:22,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 13:07:32,058 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 466 treesize of output 446 [2024-05-12 13:07:32,213 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2024-05-12 13:07:32,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 496 treesize of output 427 [2024-05-12 13:07:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:46,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:46,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831641458] [2024-05-12 13:07:46,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 13:07:46,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152485582] [2024-05-12 13:07:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152485582] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 13:07:46,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-05-12 13:07:46,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2024-05-12 13:07:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696502431] [2024-05-12 13:07:46,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-05-12 13:07:46,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-05-12 13:07:46,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-05-12 13:07:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2024-05-12 13:07:47,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 13:07:47,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 158 transitions, 1422 flow. Second operand has 26 states, 26 states have (on average 14.538461538461538) internal successors, (378), 26 states have internal predecessors, (378), 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) [2024-05-12 13:07:47,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:47,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 13:07:47,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:23,266 INFO L124 PetriNetUnfolderBase]: 6451/12866 cut-off events. [2024-05-12 13:08:23,267 INFO L125 PetriNetUnfolderBase]: For 37866/37866 co-relation queries the response was YES. [2024-05-12 13:08:23,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39299 conditions, 12866 events. 6451/12866 cut-off events. For 37866/37866 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 92831 event pairs, 876 based on Foata normal form. 64/12911 useless extension candidates. Maximal degree in co-relation 39248. Up to 4494 conditions per place. [2024-05-12 13:08:23,329 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 353 selfloop transitions, 158 changer transitions 59/578 dead transitions. [2024-05-12 13:08:23,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 578 transitions, 4392 flow [2024-05-12 13:08:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-05-12 13:08:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-05-12 13:08:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1031 transitions. [2024-05-12 13:08:23,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3969965344628417 [2024-05-12 13:08:23,335 INFO L175 Difference]: Start difference. First operand has 155 places, 158 transitions, 1422 flow. Second operand 49 states and 1031 transitions. [2024-05-12 13:08:23,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 578 transitions, 4392 flow [2024-05-12 13:08:23,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 578 transitions, 4103 flow, removed 115 selfloop flow, removed 12 redundant places. [2024-05-12 13:08:23,493 INFO L231 Difference]: Finished difference. Result has 198 places, 239 transitions, 2408 flow [2024-05-12 13:08:23,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=2408, PETRI_PLACES=198, PETRI_TRANSITIONS=239} [2024-05-12 13:08:23,494 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 150 predicate places. [2024-05-12 13:08:23,494 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 239 transitions, 2408 flow [2024-05-12 13:08:23,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.538461538461538) internal successors, (378), 26 states have internal predecessors, (378), 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) [2024-05-12 13:08:23,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:23,495 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:23,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-05-12 13:08:23,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-05-12 13:08:23,702 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 13:08:23,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:23,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2094084268, now seen corresponding path program 1 times [2024-05-12 13:08:23,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:23,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566790000] [2024-05-12 13:08:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:23,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:23,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 13:08:23,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29614710] [2024-05-12 13:08:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:23,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 13:08:23,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:08:23,730 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 13:08:23,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-05-12 13:08:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:23,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 13 conjunts are in the unsatisfiable core [2024-05-12 13:08:23,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 13:08:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:23,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 13:08:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:24,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:24,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566790000] [2024-05-12 13:08:24,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-05-12 13:08:24,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29614710] [2024-05-12 13:08:24,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29614710] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 13:08:24,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-05-12 13:08:24,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-05-12 13:08:24,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708060327] [2024-05-12 13:08:24,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-05-12 13:08:24,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 13:08:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 13:08:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-05-12 13:08:24,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-05-12 13:08:24,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 239 transitions, 2408 flow. Second operand has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 14 states have internal predecessors, (265), 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) [2024-05-12 13:08:24,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:24,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-05-12 13:08:24,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:28,534 INFO L124 PetriNetUnfolderBase]: 10248/21627 cut-off events. [2024-05-12 13:08:28,534 INFO L125 PetriNetUnfolderBase]: For 108767/108767 co-relation queries the response was YES. [2024-05-12 13:08:28,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67787 conditions, 21627 events. 10248/21627 cut-off events. For 108767/108767 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 176408 event pairs, 2072 based on Foata normal form. 1117/22661 useless extension candidates. Maximal degree in co-relation 67725. Up to 3458 conditions per place. [2024-05-12 13:08:28,702 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 487 selfloop transitions, 126 changer transitions 4/641 dead transitions. [2024-05-12 13:08:28,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 641 transitions, 6922 flow [2024-05-12 13:08:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-05-12 13:08:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-05-12 13:08:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 481 transitions. [2024-05-12 13:08:28,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6482479784366577 [2024-05-12 13:08:28,704 INFO L175 Difference]: Start difference. First operand has 198 places, 239 transitions, 2408 flow. Second operand 14 states and 481 transitions. [2024-05-12 13:08:28,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 641 transitions, 6922 flow [2024-05-12 13:08:29,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 641 transitions, 6425 flow, removed 215 selfloop flow, removed 13 redundant places. [2024-05-12 13:08:29,130 INFO L231 Difference]: Finished difference. Result has 206 places, 304 transitions, 3384 flow [2024-05-12 13:08:29,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3384, PETRI_PLACES=206, PETRI_TRANSITIONS=304} [2024-05-12 13:08:29,131 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 158 predicate places. [2024-05-12 13:08:29,131 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 304 transitions, 3384 flow [2024-05-12 13:08:29,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 14 states have internal predecessors, (265), 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) [2024-05-12 13:08:29,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:29,132 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:29,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-05-12 13:08:29,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-05-12 13:08:29,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-05-12 13:08:29,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1289436581, now seen corresponding path program 1 times [2024-05-12 13:08:29,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:29,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141356915] [2024-05-12 13:08:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:29,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:29,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-05-12 13:08:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894992612] [2024-05-12 13:08:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:29,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 13:08:29,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:08:29,374 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 13:08:29,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-05-12 13:08:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:29,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 49 conjunts are in the unsatisfiable core [2024-05-12 13:08:29,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 13:08:29,916 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 7 treesize of output 6 [2024-05-12 13:08:30,180 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 22 treesize of output 17 [2024-05-12 13:08:30,691 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 21 treesize of output 16 [2024-05-12 13:08:30,841 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 20 treesize of output 16 [2024-05-12 13:08:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:30,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 13:09:26,734 WARN L293 SmtUtils]: Spent 12.61s on a formula simplification. DAG size of input: 18 DAG size of output: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-05-12 13:09:56,885 WARN L293 SmtUtils]: Spent 27.05s on a formula simplification. DAG size of input: 237 DAG size of output: 228 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15