./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.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-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.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 [2024-06-27 21:51:01,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:51:01,530 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:51:01,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:51:01,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:51:01,562 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:51:01,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:51:01,564 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:51:01,564 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:51:01,568 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:51:01,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:51:01,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:51:01,570 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:51:01,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:51:01,571 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:51:01,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:51:01,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:51:01,572 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:51:01,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:51:01,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:51:01,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:51:01,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:51:01,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:51:01,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:51:01,574 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:51:01,574 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:51:01,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:51:01,575 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:51:01,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:51:01,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:51:01,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:51:01,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:51:01,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:51:01,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:51:01,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:51:01,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:51:01,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:51:01,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:51:01,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:51:01,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:51:01,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:51:01,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:51:01,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:51:01,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:51:01,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:51:01,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:51:01,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:51:01,901 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:51:01,901 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:51:01,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:51:03,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:51:03,314 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:51:03,315 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:51:03,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18227861f/46f01bb141db4dbfbc75860f23e67304/FLAG3115369e2 [2024-06-27 21:51:03,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18227861f/46f01bb141db4dbfbc75860f23e67304 [2024-06-27 21:51:03,347 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:51:03,347 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:51:03,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 21:51:03,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:51:03,434 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:51:03,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:51:03,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:51:03,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:51:03,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:51:03" (1/2) ... [2024-06-27 21:51:03,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d3213bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:03, skipping insertion in model container [2024-06-27 21:51:03,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:51:03" (1/2) ... [2024-06-27 21:51:03,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ec4df60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:51:03, skipping insertion in model container [2024-06-27 21:51:03,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:51:03" (2/2) ... [2024-06-27 21:51:03,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d3213bb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03, skipping insertion in model container [2024-06-27 21:51:03,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:51:03" (2/2) ... [2024-06-27 21:51:03,445 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:51:03,473 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:51:03,474 INFO L97 edCorrectnessWitness]: Location invariant before [L778-L778] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-27 21:51:03,475 INFO L97 edCorrectnessWitness]: Location invariant before [L780-L780] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-27 21:51:03,475 INFO L97 edCorrectnessWitness]: Location invariant before [L781-L781] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-27 21:51:03,475 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:51:03,475 INFO L106 edCorrectnessWitness]: ghost_update [L776-L776] multithreaded = 1; [2024-06-27 21:51:03,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:51:03,663 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-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-06-27 21:51:03,780 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:51:03,789 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 21:51:03,822 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-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:51:03,867 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:51:03,912 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:51:03,912 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03 WrapperNode [2024-06-27 21:51:03,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:51:03,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:51:03,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:51:03,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:51:03,920 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 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,933 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 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,959 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-06-27 21:51:03,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:51:03,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:51:03,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:51:03,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:51:03,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,970 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,981 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 21:51:03,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:51:03,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:51:03,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:51:03,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:51:03,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (1/1) ... [2024-06-27 21:51:03,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:51:04,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:51:04,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 21:51:04,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 21:51:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:51:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:51:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 21:51:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 21:51:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 21:51:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 21:51:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 21:51:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 21:51:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:51:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:51:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:51:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:51:04,146 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 21:51:04,249 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:51:04,251 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:51:04,376 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:51:04,376 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:51:04,476 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:51:04,478 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:51:04,478 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:51:04 BoogieIcfgContainer [2024-06-27 21:51:04,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:51:04,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:51:04,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:51:04,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:51:04,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:51:03" (1/4) ... [2024-06-27 21:51:04,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7cfe5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:51:04, skipping insertion in model container [2024-06-27 21:51:04,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:51:03" (2/4) ... [2024-06-27 21:51:04,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7cfe5b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:51:04, skipping insertion in model container [2024-06-27 21:51:04,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:51:03" (3/4) ... [2024-06-27 21:51:04,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7cfe5b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:51:04, skipping insertion in model container [2024-06-27 21:51:04,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:51:04" (4/4) ... [2024-06-27 21:51:04,487 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:51:04,505 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:51:04,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 21:51:04,507 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:51:04,553 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:51:04,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 102 flow [2024-06-27 21:51:04,620 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-06-27 21:51:04,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:51:04,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-06-27 21:51:04,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 102 flow [2024-06-27 21:51:04,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 39 transitions, 87 flow [2024-06-27 21:51:04,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:51:04,643 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;@207ea32b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:51:04,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 21:51:04,646 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:51:04,646 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:51:04,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:51:04,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:04,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:51:04,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:04,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:04,655 INFO L85 PathProgramCache]: Analyzing trace with hash 208181381, now seen corresponding path program 1 times [2024-06-27 21:51:04,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:04,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207432643] [2024-06-27 21:51:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:04,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:04,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207432643] [2024-06-27 21:51:04,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207432643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:04,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:04,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:51:04,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413362422] [2024-06-27 21:51:04,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:04,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:51:04,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:04,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:51:04,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:51:04,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:51:04,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:04,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:04,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:51:04,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:05,130 INFO L124 PetriNetUnfolderBase]: 109/275 cut-off events. [2024-06-27 21:51:05,130 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 21:51:05,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 275 events. 109/275 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1396 event pairs, 72 based on Foata normal form. 4/257 useless extension candidates. Maximal degree in co-relation 480. Up to 147 conditions per place. [2024-06-27 21:51:05,136 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 23 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-06-27 21:51:05,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 154 flow [2024-06-27 21:51:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:51:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:51:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-27 21:51:05,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.762962962962963 [2024-06-27 21:51:05,151 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 87 flow. Second operand 3 states and 103 transitions. [2024-06-27 21:51:05,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 154 flow [2024-06-27 21:51:05,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 150 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:51:05,159 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 92 flow [2024-06-27 21:51:05,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-27 21:51:05,167 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2024-06-27 21:51:05,167 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 92 flow [2024-06-27 21:51:05,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:05,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:05,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:05,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:51:05,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:05,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash -976748281, now seen corresponding path program 1 times [2024-06-27 21:51:05,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:05,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627144665] [2024-06-27 21:51:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:05,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:05,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627144665] [2024-06-27 21:51:05,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627144665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:05,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:05,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 21:51:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517636501] [2024-06-27 21:51:05,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:05,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:51:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:05,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:51:05,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:51:05,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:51:05,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:05,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:05,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:51:05,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:05,467 INFO L124 PetriNetUnfolderBase]: 264/625 cut-off events. [2024-06-27 21:51:05,467 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-06-27 21:51:05,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 625 events. 264/625 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3785 event pairs, 136 based on Foata normal form. 4/602 useless extension candidates. Maximal degree in co-relation 1183. Up to 393 conditions per place. [2024-06-27 21:51:05,476 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 34 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2024-06-27 21:51:05,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 223 flow [2024-06-27 21:51:05,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:51:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:51:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-27 21:51:05,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2024-06-27 21:51:05,483 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 92 flow. Second operand 4 states and 134 transitions. [2024-06-27 21:51:05,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 223 flow [2024-06-27 21:51:05,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 217 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:51:05,486 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 128 flow [2024-06-27 21:51:05,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-06-27 21:51:05,488 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2024-06-27 21:51:05,488 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 128 flow [2024-06-27 21:51:05,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:05,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:05,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:51:05,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:05,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1273258393, now seen corresponding path program 1 times [2024-06-27 21:51:05,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:05,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295621613] [2024-06-27 21:51:05,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:05,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:05,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:05,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295621613] [2024-06-27 21:51:05,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295621613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:05,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:05,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:51:05,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144882056] [2024-06-27 21:51:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:05,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:05,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:05,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:51:05,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:05,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:05,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:51:05,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:05,871 INFO L124 PetriNetUnfolderBase]: 372/878 cut-off events. [2024-06-27 21:51:05,871 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-06-27 21:51:05,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1829 conditions, 878 events. 372/878 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5899 event pairs, 54 based on Foata normal form. 20/874 useless extension candidates. Maximal degree in co-relation 1815. Up to 291 conditions per place. [2024-06-27 21:51:05,880 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 38 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-06-27 21:51:05,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 272 flow [2024-06-27 21:51:05,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:51:05,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:51:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-27 21:51:05,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2024-06-27 21:51:05,885 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 128 flow. Second operand 4 states and 134 transitions. [2024-06-27 21:51:05,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 272 flow [2024-06-27 21:51:05,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 21:51:05,889 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 164 flow [2024-06-27 21:51:05,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-27 21:51:05,890 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-06-27 21:51:05,890 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 164 flow [2024-06-27 21:51:05,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:05,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:05,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:05,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 21:51:05,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:05,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:05,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1273138423, now seen corresponding path program 2 times [2024-06-27 21:51:05,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:05,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194599187] [2024-06-27 21:51:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:05,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:05,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194599187] [2024-06-27 21:51:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194599187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:05,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:05,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:51:05,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900434485] [2024-06-27 21:51:05,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:05,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:05,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:05,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:05,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:05,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:51:06,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:06,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:06,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:51:06,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:06,136 INFO L124 PetriNetUnfolderBase]: 360/879 cut-off events. [2024-06-27 21:51:06,137 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2024-06-27 21:51:06,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2010 conditions, 879 events. 360/879 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5836 event pairs, 90 based on Foata normal form. 8/855 useless extension candidates. Maximal degree in co-relation 1993. Up to 387 conditions per place. [2024-06-27 21:51:06,144 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 38 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-06-27 21:51:06,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 308 flow [2024-06-27 21:51:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-27 21:51:06,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-06-27 21:51:06,146 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 164 flow. Second operand 5 states and 160 transitions. [2024-06-27 21:51:06,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 308 flow [2024-06-27 21:51:06,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 294 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 21:51:06,152 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 185 flow [2024-06-27 21:51:06,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-06-27 21:51:06,153 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2024-06-27 21:51:06,153 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 185 flow [2024-06-27 21:51:06,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:06,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:06,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:06,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 21:51:06,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:06,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1835977328, now seen corresponding path program 1 times [2024-06-27 21:51:06,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760528009] [2024-06-27 21:51:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760528009] [2024-06-27 21:51:06,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760528009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:06,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:06,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:51:06,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409064171] [2024-06-27 21:51:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:06,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:51:06,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:06,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:06,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:51:06,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:06,393 INFO L124 PetriNetUnfolderBase]: 352/846 cut-off events. [2024-06-27 21:51:06,394 INFO L125 PetriNetUnfolderBase]: For 653/653 co-relation queries the response was YES. [2024-06-27 21:51:06,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2030 conditions, 846 events. 352/846 cut-off events. For 653/653 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5509 event pairs, 118 based on Foata normal form. 4/825 useless extension candidates. Maximal degree in co-relation 2012. Up to 459 conditions per place. [2024-06-27 21:51:06,400 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 43 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-27 21:51:06,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 356 flow [2024-06-27 21:51:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:06,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-06-27 21:51:06,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-06-27 21:51:06,401 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 185 flow. Second operand 5 states and 162 transitions. [2024-06-27 21:51:06,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 356 flow [2024-06-27 21:51:06,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 340 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 21:51:06,411 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 213 flow [2024-06-27 21:51:06,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2024-06-27 21:51:06,415 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2024-06-27 21:51:06,415 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 213 flow [2024-06-27 21:51:06,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:06,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:06,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:06,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 21:51:06,416 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:06,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash -551762519, now seen corresponding path program 1 times [2024-06-27 21:51:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:06,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600300281] [2024-06-27 21:51:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:06,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:06,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:06,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600300281] [2024-06-27 21:51:06,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600300281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:06,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:06,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:51:06,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216292212] [2024-06-27 21:51:06,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:06,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:51:06,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:51:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:51:06,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:51:06,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:06,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:06,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:51:06,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:06,738 INFO L124 PetriNetUnfolderBase]: 748/1564 cut-off events. [2024-06-27 21:51:06,738 INFO L125 PetriNetUnfolderBase]: For 41/43 co-relation queries the response was YES. [2024-06-27 21:51:06,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 1564 events. 748/1564 cut-off events. For 41/43 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10498 event pairs, 138 based on Foata normal form. 75/1572 useless extension candidates. Maximal degree in co-relation 2895. Up to 624 conditions per place. [2024-06-27 21:51:06,747 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 30 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-06-27 21:51:06,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 321 flow [2024-06-27 21:51:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:51:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:51:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-06-27 21:51:06,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7611111111111111 [2024-06-27 21:51:06,749 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 213 flow. Second operand 4 states and 137 transitions. [2024-06-27 21:51:06,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 321 flow [2024-06-27 21:51:06,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 301 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 21:51:06,752 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 231 flow [2024-06-27 21:51:06,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-27 21:51:06,752 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2024-06-27 21:51:06,753 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 231 flow [2024-06-27 21:51:06,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:06,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:06,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:06,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 21:51:06,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:06,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1807774094, now seen corresponding path program 1 times [2024-06-27 21:51:06,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:06,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127087975] [2024-06-27 21:51:06,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:06,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:06,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:06,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127087975] [2024-06-27 21:51:06,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127087975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:06,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:06,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:06,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016713229] [2024-06-27 21:51:06,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:06,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:06,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:06,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:06,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:51:06,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:06,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:06,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:51:06,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:07,031 INFO L124 PetriNetUnfolderBase]: 765/1796 cut-off events. [2024-06-27 21:51:07,031 INFO L125 PetriNetUnfolderBase]: For 1330/1364 co-relation queries the response was YES. [2024-06-27 21:51:07,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4151 conditions, 1796 events. 765/1796 cut-off events. For 1330/1364 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 14013 event pairs, 285 based on Foata normal form. 15/1671 useless extension candidates. Maximal degree in co-relation 4127. Up to 425 conditions per place. [2024-06-27 21:51:07,046 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 42 selfloop transitions, 10 changer transitions 0/75 dead transitions. [2024-06-27 21:51:07,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 397 flow [2024-06-27 21:51:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-06-27 21:51:07,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7155555555555555 [2024-06-27 21:51:07,048 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 231 flow. Second operand 5 states and 161 transitions. [2024-06-27 21:51:07,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 397 flow [2024-06-27 21:51:07,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:51:07,052 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 254 flow [2024-06-27 21:51:07,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-06-27 21:51:07,053 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 20 predicate places. [2024-06-27 21:51:07,053 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 254 flow [2024-06-27 21:51:07,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:07,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:07,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:07,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 21:51:07,054 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:07,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1667398610, now seen corresponding path program 2 times [2024-06-27 21:51:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:07,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418212807] [2024-06-27 21:51:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:07,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:07,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:07,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418212807] [2024-06-27 21:51:07,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418212807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:07,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:07,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:07,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779438264] [2024-06-27 21:51:07,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:07,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:07,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:07,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:07,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:07,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:51:07,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:07,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:07,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:51:07,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:07,391 INFO L124 PetriNetUnfolderBase]: 910/2190 cut-off events. [2024-06-27 21:51:07,392 INFO L125 PetriNetUnfolderBase]: For 2173/2216 co-relation queries the response was YES. [2024-06-27 21:51:07,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5052 conditions, 2190 events. 910/2190 cut-off events. For 2173/2216 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 17905 event pairs, 347 based on Foata normal form. 15/2022 useless extension candidates. Maximal degree in co-relation 5026. Up to 611 conditions per place. [2024-06-27 21:51:07,408 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 44 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2024-06-27 21:51:07,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 420 flow [2024-06-27 21:51:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-27 21:51:07,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-06-27 21:51:07,410 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 254 flow. Second operand 5 states and 160 transitions. [2024-06-27 21:51:07,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 420 flow [2024-06-27 21:51:07,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 396 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 21:51:07,415 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 249 flow [2024-06-27 21:51:07,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-06-27 21:51:07,418 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 20 predicate places. [2024-06-27 21:51:07,418 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 249 flow [2024-06-27 21:51:07,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:07,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:07,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:07,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 21:51:07,419 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:07,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:07,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1667129840, now seen corresponding path program 3 times [2024-06-27 21:51:07,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:07,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618023174] [2024-06-27 21:51:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:07,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618023174] [2024-06-27 21:51:07,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618023174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:07,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:07,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:07,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256187447] [2024-06-27 21:51:07,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:07,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:07,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:07,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:07,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:07,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:51:07,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:07,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:07,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:51:07,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:07,772 INFO L124 PetriNetUnfolderBase]: 1084/2553 cut-off events. [2024-06-27 21:51:07,773 INFO L125 PetriNetUnfolderBase]: For 2273/2328 co-relation queries the response was YES. [2024-06-27 21:51:07,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5739 conditions, 2553 events. 1084/2553 cut-off events. For 2273/2328 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21311 event pairs, 426 based on Foata normal form. 18/2337 useless extension candidates. Maximal degree in co-relation 5714. Up to 723 conditions per place. [2024-06-27 21:51:07,792 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 41 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2024-06-27 21:51:07,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 401 flow [2024-06-27 21:51:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-06-27 21:51:07,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6977777777777778 [2024-06-27 21:51:07,794 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 249 flow. Second operand 5 states and 157 transitions. [2024-06-27 21:51:07,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 401 flow [2024-06-27 21:51:07,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:51:07,798 INFO L231 Difference]: Finished difference. Result has 71 places, 52 transitions, 253 flow [2024-06-27 21:51:07,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=71, PETRI_TRANSITIONS=52} [2024-06-27 21:51:07,799 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-06-27 21:51:07,800 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 52 transitions, 253 flow [2024-06-27 21:51:07,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:07,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:07,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:07,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 21:51:07,800 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:07,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:07,801 INFO L85 PathProgramCache]: Analyzing trace with hash -386483616, now seen corresponding path program 4 times [2024-06-27 21:51:07,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:07,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086079541] [2024-06-27 21:51:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:07,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:07,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086079541] [2024-06-27 21:51:07,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086079541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:07,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:07,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:07,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721719189] [2024-06-27 21:51:07,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:07,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:07,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:07,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:07,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:07,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:51:07,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:07,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:07,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:51:07,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:08,129 INFO L124 PetriNetUnfolderBase]: 1043/2414 cut-off events. [2024-06-27 21:51:08,129 INFO L125 PetriNetUnfolderBase]: For 2227/2274 co-relation queries the response was YES. [2024-06-27 21:51:08,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5485 conditions, 2414 events. 1043/2414 cut-off events. For 2227/2274 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 19878 event pairs, 346 based on Foata normal form. 18/2214 useless extension candidates. Maximal degree in co-relation 5459. Up to 660 conditions per place. [2024-06-27 21:51:08,147 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 41 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2024-06-27 21:51:08,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 74 transitions, 403 flow [2024-06-27 21:51:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-27 21:51:08,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-06-27 21:51:08,149 INFO L175 Difference]: Start difference. First operand has 71 places, 52 transitions, 253 flow. Second operand 5 states and 160 transitions. [2024-06-27 21:51:08,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 74 transitions, 403 flow [2024-06-27 21:51:08,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 368 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 21:51:08,152 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 224 flow [2024-06-27 21:51:08,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2024-06-27 21:51:08,153 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2024-06-27 21:51:08,153 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 224 flow [2024-06-27 21:51:08,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:08,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:08,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:08,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 21:51:08,154 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:08,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:08,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1974949363, now seen corresponding path program 1 times [2024-06-27 21:51:08,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:08,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26244390] [2024-06-27 21:51:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:08,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:08,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:08,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26244390] [2024-06-27 21:51:08,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26244390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:08,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:08,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:08,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029083382] [2024-06-27 21:51:08,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:08,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:08,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:08,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:08,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:51:08,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:08,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:08,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:51:08,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:08,496 INFO L124 PetriNetUnfolderBase]: 1318/2624 cut-off events. [2024-06-27 21:51:08,496 INFO L125 PetriNetUnfolderBase]: For 956/1553 co-relation queries the response was YES. [2024-06-27 21:51:08,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6025 conditions, 2624 events. 1318/2624 cut-off events. For 956/1553 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 19061 event pairs, 93 based on Foata normal form. 147/2676 useless extension candidates. Maximal degree in co-relation 6004. Up to 1132 conditions per place. [2024-06-27 21:51:08,507 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 38 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2024-06-27 21:51:08,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 384 flow [2024-06-27 21:51:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-06-27 21:51:08,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7688888888888888 [2024-06-27 21:51:08,509 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 224 flow. Second operand 5 states and 173 transitions. [2024-06-27 21:51:08,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 384 flow [2024-06-27 21:51:08,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 75 transitions, 364 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 21:51:08,512 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 258 flow [2024-06-27 21:51:08,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-06-27 21:51:08,512 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 18 predicate places. [2024-06-27 21:51:08,513 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 258 flow [2024-06-27 21:51:08,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:08,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:08,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:08,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 21:51:08,514 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:08,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:08,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1569880157, now seen corresponding path program 1 times [2024-06-27 21:51:08,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:08,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669986877] [2024-06-27 21:51:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:08,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:08,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669986877] [2024-06-27 21:51:08,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669986877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:08,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:08,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:51:08,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298304541] [2024-06-27 21:51:08,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:08,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:08,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:08,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:08,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:51:08,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:08,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:08,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:51:08,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:08,787 INFO L124 PetriNetUnfolderBase]: 750/1444 cut-off events. [2024-06-27 21:51:08,787 INFO L125 PetriNetUnfolderBase]: For 2114/2988 co-relation queries the response was YES. [2024-06-27 21:51:08,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4294 conditions, 1444 events. 750/1444 cut-off events. For 2114/2988 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8673 event pairs, 33 based on Foata normal form. 101/1470 useless extension candidates. Maximal degree in co-relation 4271. Up to 556 conditions per place. [2024-06-27 21:51:08,796 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 37 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2024-06-27 21:51:08,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 77 transitions, 409 flow [2024-06-27 21:51:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:51:08,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:51:08,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-06-27 21:51:08,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-06-27 21:51:08,798 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 258 flow. Second operand 6 states and 200 transitions. [2024-06-27 21:51:08,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 77 transitions, 409 flow [2024-06-27 21:51:08,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 396 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 21:51:08,801 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 290 flow [2024-06-27 21:51:08,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=290, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-06-27 21:51:08,802 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2024-06-27 21:51:08,802 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 290 flow [2024-06-27 21:51:08,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:08,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:08,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:08,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 21:51:08,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:08,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:08,803 INFO L85 PathProgramCache]: Analyzing trace with hash 904141888, now seen corresponding path program 1 times [2024-06-27 21:51:08,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:08,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944016770] [2024-06-27 21:51:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:08,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:08,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:08,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944016770] [2024-06-27 21:51:08,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944016770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:08,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:08,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:51:08,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326436479] [2024-06-27 21:51:08,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:08,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:08,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:08,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:08,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:08,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:51:08,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:08,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:08,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:51:08,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:09,101 INFO L124 PetriNetUnfolderBase]: 829/1980 cut-off events. [2024-06-27 21:51:09,101 INFO L125 PetriNetUnfolderBase]: For 2652/2800 co-relation queries the response was YES. [2024-06-27 21:51:09,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5371 conditions, 1980 events. 829/1980 cut-off events. For 2652/2800 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 15802 event pairs, 293 based on Foata normal form. 32/1769 useless extension candidates. Maximal degree in co-relation 5346. Up to 604 conditions per place. [2024-06-27 21:51:09,111 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 19 selfloop transitions, 2 changer transitions 17/70 dead transitions. [2024-06-27 21:51:09,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 394 flow [2024-06-27 21:51:09,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:09,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-27 21:51:09,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7022222222222222 [2024-06-27 21:51:09,113 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 290 flow. Second operand 5 states and 158 transitions. [2024-06-27 21:51:09,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 394 flow [2024-06-27 21:51:09,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 370 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 21:51:09,122 INFO L231 Difference]: Finished difference. Result has 76 places, 50 transitions, 242 flow [2024-06-27 21:51:09,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=76, PETRI_TRANSITIONS=50} [2024-06-27 21:51:09,123 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 27 predicate places. [2024-06-27 21:51:09,123 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 50 transitions, 242 flow [2024-06-27 21:51:09,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:09,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:09,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:09,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 21:51:09,124 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:09,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash 650038706, now seen corresponding path program 2 times [2024-06-27 21:51:09,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:09,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341037049] [2024-06-27 21:51:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:09,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:09,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:09,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341037049] [2024-06-27 21:51:09,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341037049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:09,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:09,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:09,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660320664] [2024-06-27 21:51:09,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:09,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:09,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:09,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-06-27 21:51:09,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 50 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:09,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:09,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-06-27 21:51:09,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:09,452 INFO L124 PetriNetUnfolderBase]: 522/1152 cut-off events. [2024-06-27 21:51:09,452 INFO L125 PetriNetUnfolderBase]: For 1225/1291 co-relation queries the response was YES. [2024-06-27 21:51:09,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 1152 events. 522/1152 cut-off events. For 1225/1291 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7473 event pairs, 140 based on Foata normal form. 27/1052 useless extension candidates. Maximal degree in co-relation 3099. Up to 350 conditions per place. [2024-06-27 21:51:09,458 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 21 selfloop transitions, 5 changer transitions 24/74 dead transitions. [2024-06-27 21:51:09,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 419 flow [2024-06-27 21:51:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:51:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:51:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 21:51:09,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5746031746031746 [2024-06-27 21:51:09,460 INFO L175 Difference]: Start difference. First operand has 76 places, 50 transitions, 242 flow. Second operand 7 states and 181 transitions. [2024-06-27 21:51:09,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 419 flow [2024-06-27 21:51:09,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 384 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 21:51:09,465 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 204 flow [2024-06-27 21:51:09,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=204, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2024-06-27 21:51:09,466 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-06-27 21:51:09,466 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 204 flow [2024-06-27 21:51:09,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:09,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:09,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:09,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 21:51:09,467 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:09,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:09,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1428266022, now seen corresponding path program 3 times [2024-06-27 21:51:09,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:09,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836534020] [2024-06-27 21:51:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:09,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:09,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836534020] [2024-06-27 21:51:09,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836534020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:09,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:09,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467645394] [2024-06-27 21:51:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:09,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:51:09,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:09,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:51:09,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:51:09,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 45 [2024-06-27 21:51:09,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:09,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:09,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 45 [2024-06-27 21:51:09,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:09,719 INFO L124 PetriNetUnfolderBase]: 143/335 cut-off events. [2024-06-27 21:51:09,719 INFO L125 PetriNetUnfolderBase]: For 349/363 co-relation queries the response was YES. [2024-06-27 21:51:09,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 335 events. 143/335 cut-off events. For 349/363 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1513 event pairs, 42 based on Foata normal form. 10/307 useless extension candidates. Maximal degree in co-relation 893. Up to 135 conditions per place. [2024-06-27 21:51:09,721 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2024-06-27 21:51:09,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 52 transitions, 274 flow [2024-06-27 21:51:09,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:51:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:51:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-27 21:51:09,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 21:51:09,722 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 204 flow. Second operand 6 states and 162 transitions. [2024-06-27 21:51:09,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 52 transitions, 274 flow [2024-06-27 21:51:09,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 52 transitions, 260 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 21:51:09,724 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2024-06-27 21:51:09,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2024-06-27 21:51:09,725 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2024-06-27 21:51:09,725 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2024-06-27 21:51:09,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:09,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-06-27 21:51:09,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-06-27 21:51:09,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 21:51:09,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-06-27 21:51:09,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 21:51:09,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 21:51:09,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-06-27 21:51:09,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 21:51:09,730 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:09,733 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 21:51:09,733 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 21:51:09,736 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 21:51:09,736 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 21:51:09,737 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 09:51:09 BasicIcfg [2024-06-27 21:51:09,737 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 21:51:09,738 INFO L158 Benchmark]: Toolchain (without parser) took 6303.93ms. Allocated memory was 163.6MB in the beginning and 262.1MB in the end (delta: 98.6MB). Free memory was 125.4MB in the beginning and 173.3MB in the end (delta: -47.8MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2024-06-27 21:51:09,738 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 163.6MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:51:09,738 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 163.6MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:51:09,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.80ms. Allocated memory is still 163.6MB. Free memory was 125.4MB in the beginning and 99.7MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-27 21:51:09,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.85ms. Allocated memory is still 163.6MB. Free memory was 99.7MB in the beginning and 97.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:51:09,739 INFO L158 Benchmark]: Boogie Preprocessor took 31.38ms. Allocated memory is still 163.6MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:51:09,740 INFO L158 Benchmark]: RCFGBuilder took 486.72ms. Allocated memory is still 163.6MB. Free memory was 95.5MB in the beginning and 114.4MB in the end (delta: -18.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 21:51:09,740 INFO L158 Benchmark]: TraceAbstraction took 5256.94ms. Allocated memory was 163.6MB in the beginning and 262.1MB in the end (delta: 98.6MB). Free memory was 113.3MB in the beginning and 173.3MB in the end (delta: -60.0MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2024-06-27 21:51:09,741 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 163.6MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 163.6MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 477.80ms. Allocated memory is still 163.6MB. Free memory was 125.4MB in the beginning and 99.7MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.85ms. Allocated memory is still 163.6MB. Free memory was 99.7MB in the beginning and 97.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.38ms. Allocated memory is still 163.6MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 486.72ms. Allocated memory is still 163.6MB. Free memory was 95.5MB in the beginning and 114.4MB in the end (delta: -18.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5256.94ms. Allocated memory was 163.6MB in the beginning and 262.1MB in the end (delta: 98.6MB). Free memory was 113.3MB in the beginning and 173.3MB in the end (delta: -60.0MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 778]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 780]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 781]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 69 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 693 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 587 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 103 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1358 IncrementalHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 26 mSDtfsCounter, 1358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=290occurred in iteration=12, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 300 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 285 ConstructedInterpolants, 0 QuantifiedInterpolants, 1197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 21:51:09,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE