./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_ok.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/queue_ok.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/queue_ok.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/queue_ok.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:50:25,301 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:50:25,346 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:50:25,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:50:25,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:50:25,364 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:50:25,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:50:25,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:50:25,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:50:25,366 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:50:25,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:50:25,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:50:25,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:50:25,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:50:25,367 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:50:25,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:50:25,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:50:25,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:50:25,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:50:25,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:50:25,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:50:25,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:50:25,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:50:25,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:50:25,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:50:25,372 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:50:25,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:50:25,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:50:25,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:50:25,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:50:25,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:50:25,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:50:25,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:50:25,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:50:25,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:50:25,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:50:25,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:50:25,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:50:25,386 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:50:25,386 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:50:25,386 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:50:25,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:50:25,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:50:25,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 00:50:25,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:50:25,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:50:25,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:50:25,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:50:25,608 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:50:25,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok.i [2024-06-28 00:50:26,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:50:26,922 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:50:26,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i [2024-06-28 00:50:26,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8610e8695/ac083bd857f34f8db3a1c51d5775ed45/FLAGc4ac4616e [2024-06-28 00:50:26,968 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8610e8695/ac083bd857f34f8db3a1c51d5775ed45 [2024-06-28 00:50:26,970 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:50:26,971 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:50:26,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/queue_ok.yml/witness.yml [2024-06-28 00:50:27,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:50:27,037 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:50:27,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:50:27,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:50:27,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:50:27,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:50:26" (1/2) ... [2024-06-28 00:50:27,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cea90a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:50:27, skipping insertion in model container [2024-06-28 00:50:27,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:50:26" (1/2) ... [2024-06-28 00:50:27,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e6f4130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:50:27, skipping insertion in model container [2024-06-28 00:50:27,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:50:27" (2/2) ... [2024-06-28 00:50:27,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cea90a9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27, skipping insertion in model container [2024-06-28 00:50:27,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:50:27" (2/2) ... [2024-06-28 00:50:27,047 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:50:27,081 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:50:27,083 INFO L97 edCorrectnessWitness]: Location invariant before [L1054-L1054] (! multithreaded || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 20) && queue.tail <= 20)) && (! multithreaded || (m_locked || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 20) && queue.tail <= 20))) [2024-06-28 00:50:27,083 INFO L97 edCorrectnessWitness]: Location invariant before [L1053-L1053] (! multithreaded || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 20) && queue.tail <= 20)) && (! multithreaded || (m_locked || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 20) && queue.tail <= 20))) [2024-06-28 00:50:27,083 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-28 00:50:27,083 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:50:27,084 INFO L106 edCorrectnessWitness]: ghost_update [L1026-L1026] m_locked = 1; [2024-06-28 00:50:27,084 INFO L106 edCorrectnessWitness]: ghost_update [L1020-L1020] m_locked = 0; [2024-06-28 00:50:27,085 INFO L106 edCorrectnessWitness]: ghost_update [L1008-L1008] m_locked = 1; [2024-06-28 00:50:27,085 INFO L106 edCorrectnessWitness]: ghost_update [L1052-L1052] multithreaded = 1; [2024-06-28 00:50:27,085 INFO L106 edCorrectnessWitness]: ghost_update [L1039-L1039] m_locked = 0; [2024-06-28 00:50:27,126 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:50:27,467 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i[43266,43279] [2024-06-28 00:50:27,471 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i[43543,43556] [2024-06-28 00:50:27,507 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:50:27,516 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:50:27,592 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i[43266,43279] Start Parsing Local [2024-06-28 00:50:27,594 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i[43543,43556] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:50:27,650 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:50:27,716 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:50:27,718 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27 WrapperNode [2024-06-28 00:50:27,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:50:27,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:50:27,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:50:27,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:50:27,725 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 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,763 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 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,847 INFO L138 Inliner]: procedures = 274, calls = 417, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 1664 [2024-06-28 00:50:27,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:50:27,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:50:27,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:50:27,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:50:27,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,902 INFO L175 MemorySlicer]: Split 402 memory accesses to 4 slices as follows [2, 5, 3, 392]. 98 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 13 writes are split as follows [0, 0, 2, 11]. [2024-06-28 00:50:27,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:27,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:50:27,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:50:27,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:50:27,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:50:27,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (1/1) ... [2024-06-28 00:50:28,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:50:28,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:50:28,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:50:28,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:50:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-28 00:50:28,049 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-28 00:50:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-28 00:50:28,049 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-28 00:50:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 00:50:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 00:50:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 00:50:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-28 00:50:28,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-28 00:50:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 00:50:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 00:50:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-28 00:50:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-28 00:50:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 00:50:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:50:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:50:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 00:50:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-28 00:50:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-28 00:50:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:50:28,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:50:28,072 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:50:28,289 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:50:28,291 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:50:29,180 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:50:29,181 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:50:34,531 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:50:34,531 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-28 00:50:34,532 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:50:34 BoogieIcfgContainer [2024-06-28 00:50:34,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:50:34,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:50:34,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:50:34,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:50:34,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:50:26" (1/4) ... [2024-06-28 00:50:34,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3175d1e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:50:34, skipping insertion in model container [2024-06-28 00:50:34,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:50:27" (2/4) ... [2024-06-28 00:50:34,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3175d1e4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:50:34, skipping insertion in model container [2024-06-28 00:50:34,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:50:27" (3/4) ... [2024-06-28 00:50:34,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3175d1e4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:50:34, skipping insertion in model container [2024-06-28 00:50:34,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:50:34" (4/4) ... [2024-06-28 00:50:34,539 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2024-06-28 00:50:34,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:50:34,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 00:50:34,554 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:50:34,594 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-28 00:50:34,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 47 transitions, 108 flow [2024-06-28 00:50:34,648 INFO L124 PetriNetUnfolderBase]: 7/45 cut-off events. [2024-06-28 00:50:34,648 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-28 00:50:34,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 45 events. 7/45 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place. [2024-06-28 00:50:34,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 47 transitions, 108 flow [2024-06-28 00:50:34,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 43 transitions, 95 flow [2024-06-28 00:50:34,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:50:34,667 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;@3141384d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:50:34,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 00:50:34,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:50:34,671 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-06-28 00:50:34,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:50:34,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:50:34,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-06-28 00:50:34,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:50:34,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:50:34,677 INFO L85 PathProgramCache]: Analyzing trace with hash 3438493, now seen corresponding path program 1 times [2024-06-28 00:50:34,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:50:34,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932367762] [2024-06-28 00:50:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:50:34,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:50:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:50:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:34,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:50:34,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932367762] [2024-06-28 00:50:34,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932367762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:50:34,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:50:34,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:50:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536272174] [2024-06-28 00:50:34,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:50:34,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-06-28 00:50:34,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:50:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-06-28 00:50:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-06-28 00:50:34,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 00:50:34,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 95 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:34,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:50:34,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 00:50:34,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:50:35,548 INFO L124 PetriNetUnfolderBase]: 668/1081 cut-off events. [2024-06-28 00:50:35,548 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-06-28 00:50:35,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 1081 events. 668/1081 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4742 event pairs, 484 based on Foata normal form. 30/864 useless extension candidates. Maximal degree in co-relation 2010. Up to 1021 conditions per place. [2024-06-28 00:50:35,555 INFO L140 encePairwiseOnDemand]: 45/47 looper letters, 33 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-06-28 00:50:35,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 153 flow [2024-06-28 00:50:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-06-28 00:50:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-06-28 00:50:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 53 transitions. [2024-06-28 00:50:35,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-28 00:50:35,565 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 95 flow. Second operand 2 states and 53 transitions. [2024-06-28 00:50:35,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 153 flow [2024-06-28 00:50:35,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:50:35,569 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 82 flow [2024-06-28 00:50:35,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-06-28 00:50:35,574 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2024-06-28 00:50:35,574 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 82 flow [2024-06-28 00:50:35,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:35,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:50:35,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:50:35,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:50:35,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:50:35,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:50:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1664593889, now seen corresponding path program 1 times [2024-06-28 00:50:35,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:50:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797993676] [2024-06-28 00:50:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:50:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:50:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:50:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:36,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:50:36,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797993676] [2024-06-28 00:50:36,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797993676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:50:36,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:50:36,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:50:36,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294279877] [2024-06-28 00:50:36,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:50:36,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:50:36,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:50:36,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:50:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:50:36,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 00:50:36,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:36,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:50:36,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 00:50:36,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:50:37,110 INFO L124 PetriNetUnfolderBase]: 1006/1604 cut-off events. [2024-06-28 00:50:37,110 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-28 00:50:37,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3173 conditions, 1604 events. 1006/1604 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7534 event pairs, 346 based on Foata normal form. 0/1294 useless extension candidates. Maximal degree in co-relation 3170. Up to 965 conditions per place. [2024-06-28 00:50:37,117 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 55 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-06-28 00:50:37,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 64 transitions, 251 flow [2024-06-28 00:50:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:50:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:50:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-06-28 00:50:37,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-06-28 00:50:37,119 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 82 flow. Second operand 3 states and 87 transitions. [2024-06-28 00:50:37,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 64 transitions, 251 flow [2024-06-28 00:50:37,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 251 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:50:37,121 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 103 flow [2024-06-28 00:50:37,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2024-06-28 00:50:37,122 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2024-06-28 00:50:37,122 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 103 flow [2024-06-28 00:50:37,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:37,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:50:37,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:50:37,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:50:37,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:50:37,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:50:37,124 INFO L85 PathProgramCache]: Analyzing trace with hash 251320901, now seen corresponding path program 1 times [2024-06-28 00:50:37,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:50:37,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756792902] [2024-06-28 00:50:37,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:50:37,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:50:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:50:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:37,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:50:37,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756792902] [2024-06-28 00:50:37,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756792902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:50:37,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:50:37,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:50:37,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418503756] [2024-06-28 00:50:37,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:50:37,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:50:37,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:50:37,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:50:37,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:50:37,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 00:50:37,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2024-06-28 00:50:37,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:50:37,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 00:50:37,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:50:38,634 INFO L124 PetriNetUnfolderBase]: 1224/1956 cut-off events. [2024-06-28 00:50:38,634 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-06-28 00:50:38,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4165 conditions, 1956 events. 1224/1956 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9650 event pairs, 195 based on Foata normal form. 20/1867 useless extension candidates. Maximal degree in co-relation 4160. Up to 1030 conditions per place. [2024-06-28 00:50:38,642 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 85 selfloop transitions, 13 changer transitions 4/108 dead transitions. [2024-06-28 00:50:38,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 108 transitions, 459 flow [2024-06-28 00:50:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:50:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:50:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-28 00:50:38,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6340425531914894 [2024-06-28 00:50:38,650 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 103 flow. Second operand 5 states and 149 transitions. [2024-06-28 00:50:38,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 108 transitions, 459 flow [2024-06-28 00:50:38,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 108 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:50:38,653 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 182 flow [2024-06-28 00:50:38,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2024-06-28 00:50:38,662 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-28 00:50:38,662 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 182 flow [2024-06-28 00:50:38,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2024-06-28 00:50:38,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:50:38,663 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:50:38,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:50:38,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:50:38,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:50:38,664 INFO L85 PathProgramCache]: Analyzing trace with hash -798982370, now seen corresponding path program 2 times [2024-06-28 00:50:38,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:50:38,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933415288] [2024-06-28 00:50:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:50:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:50:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:50:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:40,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:50:40,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933415288] [2024-06-28 00:50:40,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933415288] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 00:50:40,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378473311] [2024-06-28 00:50:40,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 00:50:40,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 00:50:40,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:50:40,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-28 00:50:40,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-28 00:50:40,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-28 00:50:40,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 00:50:40,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 41 conjunts are in the unsatisfiable core [2024-06-28 00:50:40,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 00:50:40,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-06-28 00:50:40,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 109 [2024-06-28 00:50:40,801 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 61 treesize of output 43 [2024-06-28 00:50:40,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 116 [2024-06-28 00:50:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:40,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 00:50:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:41,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378473311] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 00:50:41,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 00:50:41,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 11 [2024-06-28 00:50:41,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687585168] [2024-06-28 00:50:41,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 00:50:41,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:50:41,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:50:41,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:50:41,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:50:41,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 00:50:41,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 182 flow. Second operand has 13 states, 13 states have (on average 11.538461538461538) internal successors, (150), 13 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:41,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:50:41,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 00:50:41,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:50:43,103 INFO L124 PetriNetUnfolderBase]: 2585/4207 cut-off events. [2024-06-28 00:50:43,104 INFO L125 PetriNetUnfolderBase]: For 1688/1724 co-relation queries the response was YES. [2024-06-28 00:50:43,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10210 conditions, 4207 events. 2585/4207 cut-off events. For 1688/1724 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 24350 event pairs, 184 based on Foata normal form. 204/4178 useless extension candidates. Maximal degree in co-relation 10203. Up to 762 conditions per place. [2024-06-28 00:50:43,126 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 255 selfloop transitions, 45 changer transitions 13/319 dead transitions. [2024-06-28 00:50:43,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 319 transitions, 1531 flow [2024-06-28 00:50:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-28 00:50:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-28 00:50:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 480 transitions. [2024-06-28 00:50:43,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6007509386733417 [2024-06-28 00:50:43,129 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 182 flow. Second operand 17 states and 480 transitions. [2024-06-28 00:50:43,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 319 transitions, 1531 flow [2024-06-28 00:50:43,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 319 transitions, 1522 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 00:50:43,137 INFO L231 Difference]: Finished difference. Result has 72 places, 85 transitions, 545 flow [2024-06-28 00:50:43,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=545, PETRI_PLACES=72, PETRI_TRANSITIONS=85} [2024-06-28 00:50:43,137 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-06-28 00:50:43,138 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 85 transitions, 545 flow [2024-06-28 00:50:43,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.538461538461538) internal successors, (150), 13 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:43,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:50:43,138 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:50:43,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-28 00:50:43,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 00:50:43,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:50:43,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:50:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash 229229702, now seen corresponding path program 1 times [2024-06-28 00:50:43,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:50:43,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838731804] [2024-06-28 00:50:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:50:43,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:50:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:50:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:43,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:50:43,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838731804] [2024-06-28 00:50:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838731804] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 00:50:43,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99438976] [2024-06-28 00:50:43,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:50:43,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 00:50:43,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:50:43,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-28 00:50:43,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-28 00:50:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:50:44,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-28 00:50:44,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 00:50:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:44,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 00:50:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:44,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99438976] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 00:50:44,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 00:50:44,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-06-28 00:50:44,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979173881] [2024-06-28 00:50:44,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 00:50:44,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:50:44,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:50:44,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:50:44,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:50:44,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 00:50:44,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 85 transitions, 545 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:44,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:50:44,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 00:50:44,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:50:45,471 INFO L124 PetriNetUnfolderBase]: 2227/3613 cut-off events. [2024-06-28 00:50:45,471 INFO L125 PetriNetUnfolderBase]: For 11640/11640 co-relation queries the response was YES. [2024-06-28 00:50:45,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12970 conditions, 3613 events. 2227/3613 cut-off events. For 11640/11640 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 19474 event pairs, 710 based on Foata normal form. 656/4010 useless extension candidates. Maximal degree in co-relation 12952. Up to 1694 conditions per place. [2024-06-28 00:50:45,493 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 214 selfloop transitions, 33 changer transitions 0/253 dead transitions. [2024-06-28 00:50:45,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 253 transitions, 1906 flow [2024-06-28 00:50:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:50:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:50:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 293 transitions. [2024-06-28 00:50:45,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6234042553191489 [2024-06-28 00:50:45,495 INFO L175 Difference]: Start difference. First operand has 72 places, 85 transitions, 545 flow. Second operand 10 states and 293 transitions. [2024-06-28 00:50:45,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 253 transitions, 1906 flow [2024-06-28 00:50:45,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 253 transitions, 1668 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-06-28 00:50:45,515 INFO L231 Difference]: Finished difference. Result has 81 places, 90 transitions, 633 flow [2024-06-28 00:50:45,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=633, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2024-06-28 00:50:45,516 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-06-28 00:50:45,516 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 633 flow [2024-06-28 00:50:45,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:45,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:50:45,516 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:50:45,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-28 00:50:45,729 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 [2024-06-28 00:50:45,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:50:45,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:50:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1483777826, now seen corresponding path program 3 times [2024-06-28 00:50:45,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:50:45,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439776665] [2024-06-28 00:50:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:50:45,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:50:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:50:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:47,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:50:47,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439776665] [2024-06-28 00:50:47,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439776665] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 00:50:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540397002] [2024-06-28 00:50:47,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-28 00:50:47,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 00:50:47,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:50:47,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-28 00:50:47,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-28 00:50:48,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-06-28 00:50:48,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 00:50:48,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 61 conjunts are in the unsatisfiable core [2024-06-28 00:50:48,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 00:50:48,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-06-28 00:50:48,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 96 [2024-06-28 00:50:48,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:50:49,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 103 [2024-06-28 00:50:49,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:50:49,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:50:49,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 108 [2024-06-28 00:50:49,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:50:49,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:50:49,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 113 [2024-06-28 00:50:49,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:50:49,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:50:49,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 118 [2024-06-28 00:50:49,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2024-06-28 00:50:49,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:50:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:49,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 00:50:49,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-28 00:50:49,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-28 00:50:49,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-28 00:50:49,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-28 00:50:49,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-28 00:50:49,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-06-28 00:50:49,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-06-28 00:50:49,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-06-28 00:50:49,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-06-28 00:50:49,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:50:50,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 00:50:50,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2024-06-28 00:50:50,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:50:50,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 00:50:50,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 39 [2024-06-28 00:50:51,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:50:51,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-28 00:50:51,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:50:51,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2024-06-28 00:50:51,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 00:50:51,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 37 [2024-06-28 00:50:51,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-28 00:50:51,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:50:51,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 37 [2024-06-28 00:50:51,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:50:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:53,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540397002] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 00:50:53,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 00:50:53,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 23 [2024-06-28 00:50:53,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873532370] [2024-06-28 00:50:53,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 00:50:53,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-06-28 00:50:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:50:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-06-28 00:50:53,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2024-06-28 00:50:53,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 00:50:53,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 633 flow. Second operand has 25 states, 25 states have (on average 10.8) internal successors, (270), 25 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:53,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:50:53,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 00:50:53,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:50:57,502 INFO L124 PetriNetUnfolderBase]: 4791/7714 cut-off events. [2024-06-28 00:50:57,502 INFO L125 PetriNetUnfolderBase]: For 35107/35113 co-relation queries the response was YES. [2024-06-28 00:50:57,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27642 conditions, 7714 events. 4791/7714 cut-off events. For 35107/35113 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 45523 event pairs, 146 based on Foata normal form. 528/7721 useless extension candidates. Maximal degree in co-relation 27618. Up to 1686 conditions per place. [2024-06-28 00:50:57,557 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 347 selfloop transitions, 95 changer transitions 11/459 dead transitions. [2024-06-28 00:50:57,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 459 transitions, 3071 flow [2024-06-28 00:50:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-06-28 00:50:57,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-06-28 00:50:57,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 636 transitions. [2024-06-28 00:50:57,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412765957446809 [2024-06-28 00:50:57,560 INFO L175 Difference]: Start difference. First operand has 81 places, 90 transitions, 633 flow. Second operand 25 states and 636 transitions. [2024-06-28 00:50:57,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 459 transitions, 3071 flow [2024-06-28 00:50:57,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 459 transitions, 2969 flow, removed 51 selfloop flow, removed 0 redundant places. [2024-06-28 00:50:57,625 INFO L231 Difference]: Finished difference. Result has 119 places, 139 transitions, 1484 flow [2024-06-28 00:50:57,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1484, PETRI_PLACES=119, PETRI_TRANSITIONS=139} [2024-06-28 00:50:57,626 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2024-06-28 00:50:57,626 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 139 transitions, 1484 flow [2024-06-28 00:50:57,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.8) internal successors, (270), 25 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:57,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:50:57,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:50:57,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-06-28 00:50:57,832 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 [2024-06-28 00:50:57,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:50:57,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:50:57,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1119982448, now seen corresponding path program 1 times [2024-06-28 00:50:57,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:50:57,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723431972] [2024-06-28 00:50:57,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:50:57,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:50:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:50:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:50:57,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:50:57,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723431972] [2024-06-28 00:50:57,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723431972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:50:57,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:50:57,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:50:57,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993864896] [2024-06-28 00:50:57,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:50:57,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:50:57,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:50:57,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:50:57,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:50:57,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 00:50:57,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 139 transitions, 1484 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:57,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:50:57,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 00:50:57,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:50:58,594 INFO L124 PetriNetUnfolderBase]: 2212/3927 cut-off events. [2024-06-28 00:50:58,595 INFO L125 PetriNetUnfolderBase]: For 20152/20170 co-relation queries the response was YES. [2024-06-28 00:50:58,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13909 conditions, 3927 events. 2212/3927 cut-off events. For 20152/20170 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 22775 event pairs, 992 based on Foata normal form. 72/3827 useless extension candidates. Maximal degree in co-relation 13869. Up to 2195 conditions per place. [2024-06-28 00:50:58,620 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 76 selfloop transitions, 3 changer transitions 3/88 dead transitions. [2024-06-28 00:50:58,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 88 transitions, 875 flow [2024-06-28 00:50:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:50:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:50:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 00:50:58,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-28 00:50:58,623 INFO L175 Difference]: Start difference. First operand has 119 places, 139 transitions, 1484 flow. Second operand 3 states and 77 transitions. [2024-06-28 00:50:58,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 88 transitions, 875 flow [2024-06-28 00:50:58,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 720 flow, removed 36 selfloop flow, removed 24 redundant places. [2024-06-28 00:50:58,654 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 447 flow [2024-06-28 00:50:58,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=447, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2024-06-28 00:50:58,655 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-06-28 00:50:58,655 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 447 flow [2024-06-28 00:50:58,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:50:58,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:50:58,656 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:50:58,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:50:58,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:50:58,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:50:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash 852782174, now seen corresponding path program 4 times [2024-06-28 00:50:58,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:50:58,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602733323] [2024-06-28 00:50:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:50:58,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:50:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:51:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:51:06,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:51:06,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602733323] [2024-06-28 00:51:06,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602733323] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 00:51:06,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145446763] [2024-06-28 00:51:06,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-28 00:51:06,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 00:51:06,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:51:06,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-28 00:51:06,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-28 00:51:07,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-28 00:51:07,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 00:51:07,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 102 conjunts are in the unsatisfiable core [2024-06-28 00:51:07,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 00:51:07,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-06-28 00:51:07,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 96 [2024-06-28 00:51:07,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:51:07,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 103 [2024-06-28 00:51:07,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:51:07,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 108 [2024-06-28 00:51:07,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 113 [2024-06-28 00:51:07,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 118 [2024-06-28 00:51:07,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2024-06-28 00:51:07,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 128 [2024-06-28 00:51:07,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 146 [2024-06-28 00:51:07,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 151 [2024-06-28 00:51:07,919 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 173 treesize of output 159 [2024-06-28 00:51:07,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 156 [2024-06-28 00:51:08,000 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 187 treesize of output 157 [2024-06-28 00:51:08,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 148 [2024-06-28 00:51:08,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-28 00:51:08,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 153 [2024-06-28 00:51:08,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 171 [2024-06-28 00:51:08,280 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-06-28 00:51:08,294 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 229 treesize of output 197 [2024-06-28 00:51:08,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 163 [2024-06-28 00:51:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:51:08,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 00:51:08,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-28 00:51:09,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:09,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:51:11,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 34 [2024-06-28 00:51:11,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-28 00:51:11,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:51:11,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 34 [2024-06-28 00:51:11,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 36 [2024-06-28 00:51:11,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-06-28 00:51:11,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-06-28 00:51:11,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-28 00:51:11,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:51:11,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:51:11,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:11,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 34 [2024-06-28 00:51:11,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:12,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:12,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 00:51:12,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 34 [2024-06-28 00:51:12,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:12,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:12,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:12,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:12,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:12,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 00:51:12,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2024-06-28 00:51:12,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:51:12,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:12,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-28 00:51:12,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:12,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:51:12,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:12,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-06-28 00:51:12,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 34 [2024-06-28 00:51:13,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-06-28 00:51:14,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 64 [2024-06-28 00:51:14,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:14,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:14,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 66 [2024-06-28 00:51:15,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:15,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:51:15,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 00:51:15,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 64 [2024-06-28 00:51:15,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:15,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:15,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:51:15,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 00:51:15,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 66 [2024-06-28 00:51:15,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:15,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-28 00:51:15,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:15,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:15,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:51:15,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 61 [2024-06-28 00:51:15,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:15,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:15,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-28 00:51:15,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:15,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:15,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 64 [2024-06-28 00:51:17,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 79 [2024-06-28 00:51:17,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-28 00:51:17,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 00:51:17,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 81 [2024-06-28 00:51:17,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 00:51:17,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2024-06-28 00:51:17,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-06-28 00:51:17,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-28 00:51:17,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-28 00:51:17,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-06-28 00:51:17,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 79 [2024-06-28 00:51:17,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 76 [2024-06-28 00:51:17,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2024-06-28 00:51:17,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-28 00:51:17,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-06-28 00:51:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:51:22,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145446763] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 00:51:22,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 00:51:22,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2024-06-28 00:51:22,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355507750] [2024-06-28 00:51:22,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 00:51:22,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-06-28 00:51:22,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:51:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-06-28 00:51:22,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=1954, Unknown=0, NotChecked=0, Total=2450 [2024-06-28 00:51:22,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 00:51:22,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 447 flow. Second operand has 50 states, 50 states have (on average 10.38) internal successors, (519), 50 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:51:22,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:51:22,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 00:51:22,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:51:41,379 INFO L124 PetriNetUnfolderBase]: 3265/5530 cut-off events. [2024-06-28 00:51:41,380 INFO L125 PetriNetUnfolderBase]: For 49080/49098 co-relation queries the response was YES. [2024-06-28 00:51:41,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19796 conditions, 5530 events. 3265/5530 cut-off events. For 49080/49098 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 31849 event pairs, 321 based on Foata normal form. 148/5577 useless extension candidates. Maximal degree in co-relation 19760. Up to 3110 conditions per place. [2024-06-28 00:51:41,441 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 392 selfloop transitions, 81 changer transitions 19/498 dead transitions. [2024-06-28 00:51:41,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 498 transitions, 3293 flow [2024-06-28 00:51:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-06-28 00:51:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-06-28 00:51:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 777 transitions. [2024-06-28 00:51:41,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166223404255319 [2024-06-28 00:51:41,449 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 447 flow. Second operand 32 states and 777 transitions. [2024-06-28 00:51:41,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 498 transitions, 3293 flow [2024-06-28 00:51:41,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 498 transitions, 3221 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:51:41,501 INFO L231 Difference]: Finished difference. Result has 141 places, 132 transitions, 1202 flow [2024-06-28 00:51:41,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1202, PETRI_PLACES=141, PETRI_TRANSITIONS=132} [2024-06-28 00:51:41,502 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-28 00:51:41,502 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 132 transitions, 1202 flow [2024-06-28 00:51:41,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 10.38) internal successors, (519), 50 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:51:41,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:51:41,503 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:51:41,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-28 00:51:41,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 00:51:41,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:51:41,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:51:41,721 INFO L85 PathProgramCache]: Analyzing trace with hash -814948033, now seen corresponding path program 2 times [2024-06-28 00:51:41,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:51:41,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675441397] [2024-06-28 00:51:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:51:41,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:51:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:51:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:51:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:51:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675441397] [2024-06-28 00:51:42,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675441397] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 00:51:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627260387] [2024-06-28 00:51:42,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 00:51:42,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 00:51:42,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:51:42,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-28 00:51:42,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-28 00:51:42,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-28 00:51:42,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 00:51:42,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-28 00:51:42,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 00:51:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:51:42,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 00:51:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:51:42,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627260387] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 00:51:42,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 00:51:42,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-06-28 00:51:42,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954507058] [2024-06-28 00:51:42,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 00:51:42,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-28 00:51:42,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:51:42,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-28 00:51:42,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-06-28 00:51:42,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 00:51:42,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 132 transitions, 1202 flow. Second operand has 23 states, 23 states have (on average 10.478260869565217) internal successors, (241), 23 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:51:42,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:51:42,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 00:51:42,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:51:43,773 INFO L124 PetriNetUnfolderBase]: 1241/2175 cut-off events. [2024-06-28 00:51:43,774 INFO L125 PetriNetUnfolderBase]: For 37603/37633 co-relation queries the response was YES. [2024-06-28 00:51:43,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10637 conditions, 2175 events. 1241/2175 cut-off events. For 37603/37633 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9660 event pairs, 381 based on Foata normal form. 318/2470 useless extension candidates. Maximal degree in co-relation 10585. Up to 875 conditions per place. [2024-06-28 00:51:43,789 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 244 selfloop transitions, 47 changer transitions 0/297 dead transitions. [2024-06-28 00:51:43,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 297 transitions, 2468 flow [2024-06-28 00:51:43,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-06-28 00:51:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-06-28 00:51:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 469 transitions. [2024-06-28 00:51:43,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357833655706 [2024-06-28 00:51:43,792 INFO L175 Difference]: Start difference. First operand has 141 places, 132 transitions, 1202 flow. Second operand 22 states and 469 transitions. [2024-06-28 00:51:43,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 297 transitions, 2468 flow [2024-06-28 00:51:43,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 297 transitions, 2207 flow, removed 116 selfloop flow, removed 9 redundant places. [2024-06-28 00:51:43,847 INFO L231 Difference]: Finished difference. Result has 158 places, 111 transitions, 937 flow [2024-06-28 00:51:43,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=937, PETRI_PLACES=158, PETRI_TRANSITIONS=111} [2024-06-28 00:51:43,848 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 115 predicate places. [2024-06-28 00:51:43,848 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 111 transitions, 937 flow [2024-06-28 00:51:43,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.478260869565217) internal successors, (241), 23 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:51:43,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:51:43,849 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:51:43,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-28 00:51:44,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 00:51:44,062 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:51:44,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:51:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash 398082437, now seen corresponding path program 5 times [2024-06-28 00:51:44,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:51:44,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112987686] [2024-06-28 00:51:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:51:44,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:51:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:51:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 190 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:51:44,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:51:44,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112987686] [2024-06-28 00:51:44,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112987686] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 00:51:44,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793530100] [2024-06-28 00:51:44,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-28 00:51:44,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 00:51:44,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:51:44,697 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-28 00:51:44,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Killed by 15