./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.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/safe019_rmo.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/safe019_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_rmo.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 22:51:00,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:51:00,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:51:00,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:51:00,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:51:00,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:51:00,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:51:00,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:51:00,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:51:00,141 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:51:00,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:51:00,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:51:00,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:51:00,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:51:00,144 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:51:00,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:51:00,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:51:00,144 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:51:00,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:51:00,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:51:00,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:51:00,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:51:00,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:51:00,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:51:00,148 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:51:00,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:51:00,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:51:00,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:51:00,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:51:00,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:51:00,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:51:00,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:51:00,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:51:00,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:51:00,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:51:00,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:51:00,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:51:00,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:51:00,150 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:51:00,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:51:00,150 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:51:00,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:51:00,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:51:00,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:51:00,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:51:00,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:51:00,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:51:00,371 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:51:00,371 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:51:00,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_rmo.opt.yml/witness.yml [2024-06-27 22:51:00,442 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:51:00,442 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:51:00,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2024-06-27 22:51:01,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:51:01,586 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:51:01,586 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2024-06-27 22:51:01,600 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce7e59a46/cd84615a832e49c0b66706ce74906470/FLAG3287413c6 [2024-06-27 22:51:01,617 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce7e59a46/cd84615a832e49c0b66706ce74906470 [2024-06-27 22:51:01,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:51:01,620 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:51:01,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:51:01,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:51:01,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:51:01,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:51:00" (1/2) ... [2024-06-27 22:51:01,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7fcbd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:51:01, skipping insertion in model container [2024-06-27 22:51:01,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:51:00" (1/2) ... [2024-06-27 22:51:01,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57bc7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:51:01, skipping insertion in model container [2024-06-27 22:51:01,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:51:01" (2/2) ... [2024-06-27 22:51:01,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7fcbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:01, skipping insertion in model container [2024-06-27 22:51:01,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:51:01" (2/2) ... [2024-06-27 22:51:01,633 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:51:01,661 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:51:01,662 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-27 22:51:01,662 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-27 22:51:01,662 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-27 22:51:01,662 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-27 22:51:01,662 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:51:01,663 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-27 22:51:01,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:51:01,819 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/safe019_rmo.opt.i[992,1005] [2024-06-27 22:51:01,932 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:51:01,946 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:51:01,980 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/safe019_rmo.opt.i[992,1005] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:51:02,056 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:51:02,096 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:51:02,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02 WrapperNode [2024-06-27 22:51:02,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:51:02,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:51:02,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:51:02,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:51:02,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,167 INFO L138 Inliner]: procedures = 176, calls = 78, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 171 [2024-06-27 22:51:02,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:51:02,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:51:02,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:51:02,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:51:02,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,191 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,222 INFO L175 MemorySlicer]: Split 33 memory accesses to 2 slices as follows [2, 31]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-27 22:51:02,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:51:02,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:51:02,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:51:02,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:51:02,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (1/1) ... [2024-06-27 22:51:02,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:51:02,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:51:02,289 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 22:51:02,326 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 22:51:02,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:51:02,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:51:02,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:51:02,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:51:02,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:51:02,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:51:02,339 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:51:02,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:51:02,339 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:51:02,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:51:02,339 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:51:02,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:51:02,340 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 22:51:02,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 22:51:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:51:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:51:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:51:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:51:02,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:51:02,361 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 22:51:02,489 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:51:02,491 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:51:02,915 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:51:02,915 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:51:03,139 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:51:03,139 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:51:03,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:51:03 BoogieIcfgContainer [2024-06-27 22:51:03,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:51:03,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:51:03,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:51:03,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:51:03,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:51:00" (1/4) ... [2024-06-27 22:51:03,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f52391 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:51:03, skipping insertion in model container [2024-06-27 22:51:03,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:51:01" (2/4) ... [2024-06-27 22:51:03,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f52391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:51:03, skipping insertion in model container [2024-06-27 22:51:03,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:02" (3/4) ... [2024-06-27 22:51:03,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f52391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:51:03, skipping insertion in model container [2024-06-27 22:51:03,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:51:03" (4/4) ... [2024-06-27 22:51:03,148 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2024-06-27 22:51:03,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:51:03,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:51:03,164 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:51:03,214 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:51:03,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 22:51:03,353 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-27 22:51:03,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:51:03,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-06-27 22:51:03,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 22:51:03,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 112 flow [2024-06-27 22:51:03,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:51:03,373 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;@43c1cd38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:51:03,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:51:03,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:51:03,376 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:51:03,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:51:03,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:03,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:51:03,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:03,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash 709584806, now seen corresponding path program 1 times [2024-06-27 22:51:03,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:03,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102980421] [2024-06-27 22:51:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:03,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:03,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:03,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102980421] [2024-06-27 22:51:03,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102980421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:03,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:03,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:51:03,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031677440] [2024-06-27 22:51:03,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:03,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:51:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:51:03,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:51:03,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:03,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 22:51:03,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:03,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:03,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:04,754 INFO L124 PetriNetUnfolderBase]: 4134/6573 cut-off events. [2024-06-27 22:51:04,755 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-06-27 22:51:04,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12449 conditions, 6573 events. 4134/6573 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 43358 event pairs, 2666 based on Foata normal form. 0/6294 useless extension candidates. Maximal degree in co-relation 12436. Up to 5725 conditions per place. [2024-06-27 22:51:04,798 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 50 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-06-27 22:51:04,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 275 flow [2024-06-27 22:51:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:51:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:51:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-06-27 22:51:04,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-27 22:51:04,809 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 112 flow. Second operand 3 states and 120 transitions. [2024-06-27 22:51:04,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 275 flow [2024-06-27 22:51:04,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 22:51:04,816 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 154 flow [2024-06-27 22:51:04,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-06-27 22:51:04,820 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2024-06-27 22:51:04,820 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 154 flow [2024-06-27 22:51:04,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 22:51:04,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:04,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:04,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:51:04,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:04,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash -554448195, now seen corresponding path program 1 times [2024-06-27 22:51:04,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:04,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445117169] [2024-06-27 22:51:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:05,072 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 22:51:05,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:05,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445117169] [2024-06-27 22:51:05,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445117169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:05,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:05,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:51:05,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8461373] [2024-06-27 22:51:05,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:05,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:51:05,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:51:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:51:05,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:05,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 22:51:05,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:05,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:05,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:05,952 INFO L124 PetriNetUnfolderBase]: 4099/6508 cut-off events. [2024-06-27 22:51:05,952 INFO L125 PetriNetUnfolderBase]: For 1280/1292 co-relation queries the response was YES. [2024-06-27 22:51:05,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14431 conditions, 6508 events. 4099/6508 cut-off events. For 1280/1292 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 43247 event pairs, 1877 based on Foata normal form. 16/6439 useless extension candidates. Maximal degree in co-relation 14419. Up to 5541 conditions per place. [2024-06-27 22:51:05,993 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 50 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2024-06-27 22:51:05,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 318 flow [2024-06-27 22:51:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:51:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:51:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-06-27 22:51:05,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-06-27 22:51:05,998 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 154 flow. Second operand 3 states and 117 transitions. [2024-06-27 22:51:06,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 318 flow [2024-06-27 22:51:06,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:06,003 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 196 flow [2024-06-27 22:51:06,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-06-27 22:51:06,007 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2024-06-27 22:51:06,008 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 196 flow [2024-06-27 22:51:06,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 22:51:06,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:06,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:06,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:51:06,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:06,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:06,010 INFO L85 PathProgramCache]: Analyzing trace with hash -197141416, now seen corresponding path program 1 times [2024-06-27 22:51:06,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:06,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795802769] [2024-06-27 22:51:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:06,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:06,120 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 22:51:06,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:06,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795802769] [2024-06-27 22:51:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795802769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:06,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:51:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754553094] [2024-06-27 22:51:06,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:06,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:51:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:51:06,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:51:06,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:06,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 22:51:06,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:06,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:06,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:06,922 INFO L124 PetriNetUnfolderBase]: 4160/6583 cut-off events. [2024-06-27 22:51:06,923 INFO L125 PetriNetUnfolderBase]: For 2667/2716 co-relation queries the response was YES. [2024-06-27 22:51:06,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16231 conditions, 6583 events. 4160/6583 cut-off events. For 2667/2716 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 42889 event pairs, 2043 based on Foata normal form. 11/6574 useless extension candidates. Maximal degree in co-relation 16217. Up to 5413 conditions per place. [2024-06-27 22:51:06,963 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 80 selfloop transitions, 12 changer transitions 0/107 dead transitions. [2024-06-27 22:51:06,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 107 transitions, 528 flow [2024-06-27 22:51:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:51:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:51:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-06-27 22:51:06,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7280701754385965 [2024-06-27 22:51:06,968 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 196 flow. Second operand 4 states and 166 transitions. [2024-06-27 22:51:06,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 107 transitions, 528 flow [2024-06-27 22:51:06,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 107 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:06,972 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 283 flow [2024-06-27 22:51:06,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-27 22:51:06,973 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2024-06-27 22:51:06,973 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 283 flow [2024-06-27 22:51:06,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 22:51:06,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:06,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:06,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:51:06,974 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:06,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1769285756, now seen corresponding path program 1 times [2024-06-27 22:51:06,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:06,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132120296] [2024-06-27 22:51:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:06,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:07,174 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 22:51:07,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:07,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132120296] [2024-06-27 22:51:07,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132120296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:07,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:07,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:07,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100037067] [2024-06-27 22:51:07,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:07,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:51:07,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:07,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:51:07,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:51:07,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:07,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 22:51:07,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:07,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:07,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:08,024 INFO L124 PetriNetUnfolderBase]: 4114/6507 cut-off events. [2024-06-27 22:51:08,024 INFO L125 PetriNetUnfolderBase]: For 6328/6366 co-relation queries the response was YES. [2024-06-27 22:51:08,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18624 conditions, 6507 events. 4114/6507 cut-off events. For 6328/6366 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 42421 event pairs, 2052 based on Foata normal form. 23/6512 useless extension candidates. Maximal degree in co-relation 18607. Up to 5383 conditions per place. [2024-06-27 22:51:08,069 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 77 selfloop transitions, 12 changer transitions 0/104 dead transitions. [2024-06-27 22:51:08,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 561 flow [2024-06-27 22:51:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:51:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:51:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-06-27 22:51:08,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7149122807017544 [2024-06-27 22:51:08,071 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 283 flow. Second operand 4 states and 163 transitions. [2024-06-27 22:51:08,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 561 flow [2024-06-27 22:51:08,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 104 transitions, 549 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 22:51:08,075 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 311 flow [2024-06-27 22:51:08,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-06-27 22:51:08,076 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 8 predicate places. [2024-06-27 22:51:08,076 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 311 flow [2024-06-27 22:51:08,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 22:51:08,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:08,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:08,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:51:08,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:08,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:08,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1293148959, now seen corresponding path program 1 times [2024-06-27 22:51:08,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:08,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668185334] [2024-06-27 22:51:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:08,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:08,313 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 22:51:08,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:08,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668185334] [2024-06-27 22:51:08,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668185334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:08,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:08,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:08,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651568166] [2024-06-27 22:51:08,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:08,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:51:08,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:08,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:51:08,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:51:08,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:08,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 22:51:08,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:08,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:08,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:09,728 INFO L124 PetriNetUnfolderBase]: 8356/13240 cut-off events. [2024-06-27 22:51:09,729 INFO L125 PetriNetUnfolderBase]: For 13349/13421 co-relation queries the response was YES. [2024-06-27 22:51:09,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37776 conditions, 13240 events. 8356/13240 cut-off events. For 13349/13421 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 96311 event pairs, 1437 based on Foata normal form. 61/13265 useless extension candidates. Maximal degree in co-relation 37756. Up to 5859 conditions per place. [2024-06-27 22:51:09,806 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 96 selfloop transitions, 27 changer transitions 0/138 dead transitions. [2024-06-27 22:51:09,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 138 transitions, 821 flow [2024-06-27 22:51:09,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:51:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:51:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2024-06-27 22:51:09,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228070175438597 [2024-06-27 22:51:09,808 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 311 flow. Second operand 5 states and 206 transitions. [2024-06-27 22:51:09,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 138 transitions, 821 flow [2024-06-27 22:51:09,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 138 transitions, 797 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:51:09,813 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 498 flow [2024-06-27 22:51:09,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-27 22:51:09,814 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2024-06-27 22:51:09,814 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 498 flow [2024-06-27 22:51:09,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 22:51:09,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:09,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:09,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:51:09,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:09,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1817726813, now seen corresponding path program 2 times [2024-06-27 22:51:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:09,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12415609] [2024-06-27 22:51:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:09,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:09,966 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 22:51:09,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:09,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12415609] [2024-06-27 22:51:09,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12415609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:09,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:09,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:09,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558655646] [2024-06-27 22:51:09,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:09,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:51:09,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:51:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:51:09,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:09,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 22:51:09,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:09,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:09,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:11,817 INFO L124 PetriNetUnfolderBase]: 9691/14770 cut-off events. [2024-06-27 22:51:11,818 INFO L125 PetriNetUnfolderBase]: For 31691/32902 co-relation queries the response was YES. [2024-06-27 22:51:11,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50859 conditions, 14770 events. 9691/14770 cut-off events. For 31691/32902 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 106364 event pairs, 4746 based on Foata normal form. 80/14543 useless extension candidates. Maximal degree in co-relation 50836. Up to 10789 conditions per place. [2024-06-27 22:51:11,917 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 86 selfloop transitions, 26 changer transitions 0/127 dead transitions. [2024-06-27 22:51:11,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 910 flow [2024-06-27 22:51:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:51:11,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:51:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2024-06-27 22:51:11,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6456140350877193 [2024-06-27 22:51:11,918 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 498 flow. Second operand 5 states and 184 transitions. [2024-06-27 22:51:11,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 910 flow [2024-06-27 22:51:11,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 858 flow, removed 26 selfloop flow, removed 0 redundant places. [2024-06-27 22:51:11,966 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 622 flow [2024-06-27 22:51:11,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=622, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2024-06-27 22:51:11,969 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 18 predicate places. [2024-06-27 22:51:11,969 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 622 flow [2024-06-27 22:51:11,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 22:51:11,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:11,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:11,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:51:11,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:11,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:11,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1087608635, now seen corresponding path program 1 times [2024-06-27 22:51:11,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:11,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461227197] [2024-06-27 22:51:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:11,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:12,300 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 22:51:12,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461227197] [2024-06-27 22:51:12,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461227197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:12,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:12,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:12,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111734887] [2024-06-27 22:51:12,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:12,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:12,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:12,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:12,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:12,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-06-27 22:51:12,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 622 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 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 22:51:12,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:12,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-06-27 22:51:12,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:14,368 INFO L124 PetriNetUnfolderBase]: 11435/18050 cut-off events. [2024-06-27 22:51:14,368 INFO L125 PetriNetUnfolderBase]: For 42875/42926 co-relation queries the response was YES. [2024-06-27 22:51:14,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64709 conditions, 18050 events. 11435/18050 cut-off events. For 42875/42926 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 135617 event pairs, 2575 based on Foata normal form. 62/18059 useless extension candidates. Maximal degree in co-relation 64681. Up to 11550 conditions per place. [2024-06-27 22:51:14,486 INFO L140 encePairwiseOnDemand]: 42/57 looper letters, 147 selfloop transitions, 42 changer transitions 0/203 dead transitions. [2024-06-27 22:51:14,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 203 transitions, 1595 flow [2024-06-27 22:51:14,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:14,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 271 transitions. [2024-06-27 22:51:14,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6791979949874687 [2024-06-27 22:51:14,488 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 622 flow. Second operand 7 states and 271 transitions. [2024-06-27 22:51:14,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 203 transitions, 1595 flow [2024-06-27 22:51:14,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 203 transitions, 1580 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:14,541 INFO L231 Difference]: Finished difference. Result has 89 places, 111 transitions, 965 flow [2024-06-27 22:51:14,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=965, PETRI_PLACES=89, PETRI_TRANSITIONS=111} [2024-06-27 22:51:14,542 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2024-06-27 22:51:14,542 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 111 transitions, 965 flow [2024-06-27 22:51:14,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 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 22:51:14,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:14,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:14,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:51:14,543 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:14,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:14,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1225673429, now seen corresponding path program 2 times [2024-06-27 22:51:14,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:14,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421063275] [2024-06-27 22:51:14,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:14,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:14,853 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 22:51:14,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:14,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421063275] [2024-06-27 22:51:14,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421063275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:14,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:14,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:14,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694965024] [2024-06-27 22:51:14,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:14,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:14,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:14,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:14,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:14,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:14,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 111 transitions, 965 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:14,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:14,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:14,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:17,180 INFO L124 PetriNetUnfolderBase]: 12672/19992 cut-off events. [2024-06-27 22:51:17,180 INFO L125 PetriNetUnfolderBase]: For 64998/65507 co-relation queries the response was YES. [2024-06-27 22:51:17,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75569 conditions, 19992 events. 12672/19992 cut-off events. For 64998/65507 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 154267 event pairs, 1978 based on Foata normal form. 470/20367 useless extension candidates. Maximal degree in co-relation 75537. Up to 7379 conditions per place. [2024-06-27 22:51:17,303 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 132 selfloop transitions, 44 changer transitions 0/191 dead transitions. [2024-06-27 22:51:17,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 191 transitions, 1707 flow [2024-06-27 22:51:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:51:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:51:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 210 transitions. [2024-06-27 22:51:17,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-06-27 22:51:17,306 INFO L175 Difference]: Start difference. First operand has 89 places, 111 transitions, 965 flow. Second operand 5 states and 210 transitions. [2024-06-27 22:51:17,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 191 transitions, 1707 flow [2024-06-27 22:51:17,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 191 transitions, 1651 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:17,358 INFO L231 Difference]: Finished difference. Result has 94 places, 124 transitions, 1237 flow [2024-06-27 22:51:17,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1237, PETRI_PLACES=94, PETRI_TRANSITIONS=124} [2024-06-27 22:51:17,361 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2024-06-27 22:51:17,361 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 124 transitions, 1237 flow [2024-06-27 22:51:17,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:17,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:17,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:17,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:51:17,361 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:17,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:17,362 INFO L85 PathProgramCache]: Analyzing trace with hash -507596961, now seen corresponding path program 3 times [2024-06-27 22:51:17,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:17,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812706494] [2024-06-27 22:51:17,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:17,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:17,741 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 22:51:17,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:17,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812706494] [2024-06-27 22:51:17,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812706494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:17,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:17,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:17,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318301755] [2024-06-27 22:51:17,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:17,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:17,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:17,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:17,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:17,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:17,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 124 transitions, 1237 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:17,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:17,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:17,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:20,840 INFO L124 PetriNetUnfolderBase]: 15474/24546 cut-off events. [2024-06-27 22:51:20,840 INFO L125 PetriNetUnfolderBase]: For 97254/98279 co-relation queries the response was YES. [2024-06-27 22:51:20,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95335 conditions, 24546 events. 15474/24546 cut-off events. For 97254/98279 co-relation queries the response was YES. Maximal size of possible extension queue 1401. Compared 199456 event pairs, 4677 based on Foata normal form. 234/24455 useless extension candidates. Maximal degree in co-relation 95300. Up to 13775 conditions per place. [2024-06-27 22:51:21,030 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 111 selfloop transitions, 51 changer transitions 0/177 dead transitions. [2024-06-27 22:51:21,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 177 transitions, 1803 flow [2024-06-27 22:51:21,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:51:21,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:51:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-06-27 22:51:21,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421052631578947 [2024-06-27 22:51:21,032 INFO L175 Difference]: Start difference. First operand has 94 places, 124 transitions, 1237 flow. Second operand 5 states and 183 transitions. [2024-06-27 22:51:21,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 177 transitions, 1803 flow [2024-06-27 22:51:21,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 177 transitions, 1750 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:21,322 INFO L231 Difference]: Finished difference. Result has 97 places, 137 transitions, 1495 flow [2024-06-27 22:51:21,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1495, PETRI_PLACES=97, PETRI_TRANSITIONS=137} [2024-06-27 22:51:21,322 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2024-06-27 22:51:21,323 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 137 transitions, 1495 flow [2024-06-27 22:51:21,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:21,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:21,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:21,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:51:21,324 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:21,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:21,324 INFO L85 PathProgramCache]: Analyzing trace with hash 327244359, now seen corresponding path program 1 times [2024-06-27 22:51:21,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:21,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390800924] [2024-06-27 22:51:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:21,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:21,511 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 22:51:21,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:21,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390800924] [2024-06-27 22:51:21,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390800924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:21,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:21,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:21,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036868547] [2024-06-27 22:51:21,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:21,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:51:21,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:21,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:51:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:51:21,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:21,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 137 transitions, 1495 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 22:51:21,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:21,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:21,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:25,364 INFO L124 PetriNetUnfolderBase]: 15444/25114 cut-off events. [2024-06-27 22:51:25,364 INFO L125 PetriNetUnfolderBase]: For 119325/119680 co-relation queries the response was YES. [2024-06-27 22:51:25,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102392 conditions, 25114 events. 15444/25114 cut-off events. For 119325/119680 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 208621 event pairs, 6496 based on Foata normal form. 64/24985 useless extension candidates. Maximal degree in co-relation 102355. Up to 17629 conditions per place. [2024-06-27 22:51:25,549 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 159 selfloop transitions, 37 changer transitions 0/211 dead transitions. [2024-06-27 22:51:25,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 211 transitions, 2390 flow [2024-06-27 22:51:25,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:51:25,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:51:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 202 transitions. [2024-06-27 22:51:25,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7087719298245614 [2024-06-27 22:51:25,550 INFO L175 Difference]: Start difference. First operand has 97 places, 137 transitions, 1495 flow. Second operand 5 states and 202 transitions. [2024-06-27 22:51:25,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 211 transitions, 2390 flow [2024-06-27 22:51:25,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 211 transitions, 2327 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:25,982 INFO L231 Difference]: Finished difference. Result has 103 places, 150 transitions, 1806 flow [2024-06-27 22:51:25,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1806, PETRI_PLACES=103, PETRI_TRANSITIONS=150} [2024-06-27 22:51:25,983 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 40 predicate places. [2024-06-27 22:51:25,983 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 150 transitions, 1806 flow [2024-06-27 22:51:25,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 22:51:25,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:25,984 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 22:51:25,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:51:25,984 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:25,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash -833108783, now seen corresponding path program 1 times [2024-06-27 22:51:25,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:25,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186477881] [2024-06-27 22:51:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:25,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:26,334 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 22:51:26,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:26,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186477881] [2024-06-27 22:51:26,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186477881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:26,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:26,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:26,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891539147] [2024-06-27 22:51:26,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:26,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:51:26,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:51:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:51:26,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-06-27 22:51:26,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 150 transitions, 1806 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 22:51:26,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:26,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-06-27 22:51:26,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:30,178 INFO L124 PetriNetUnfolderBase]: 16248/26309 cut-off events. [2024-06-27 22:51:30,178 INFO L125 PetriNetUnfolderBase]: For 136797/136974 co-relation queries the response was YES. [2024-06-27 22:51:30,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111100 conditions, 26309 events. 16248/26309 cut-off events. For 136797/136974 co-relation queries the response was YES. Maximal size of possible extension queue 1486. Compared 217980 event pairs, 5991 based on Foata normal form. 66/26223 useless extension candidates. Maximal degree in co-relation 111058. Up to 21460 conditions per place. [2024-06-27 22:51:30,386 INFO L140 encePairwiseOnDemand]: 43/57 looper letters, 175 selfloop transitions, 66 changer transitions 0/255 dead transitions. [2024-06-27 22:51:30,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 255 transitions, 3206 flow [2024-06-27 22:51:30,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:51:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:51:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 232 transitions. [2024-06-27 22:51:30,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6783625730994152 [2024-06-27 22:51:30,387 INFO L175 Difference]: Start difference. First operand has 103 places, 150 transitions, 1806 flow. Second operand 6 states and 232 transitions. [2024-06-27 22:51:30,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 255 transitions, 3206 flow [2024-06-27 22:51:30,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 255 transitions, 3139 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:30,801 INFO L231 Difference]: Finished difference. Result has 111 places, 194 transitions, 2690 flow [2024-06-27 22:51:30,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2690, PETRI_PLACES=111, PETRI_TRANSITIONS=194} [2024-06-27 22:51:30,802 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 48 predicate places. [2024-06-27 22:51:30,802 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 194 transitions, 2690 flow [2024-06-27 22:51:30,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 22:51:30,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:30,802 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 22:51:30,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:51:30,803 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:30,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1010810145, now seen corresponding path program 2 times [2024-06-27 22:51:30,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:30,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024068834] [2024-06-27 22:51:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:30,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:31,306 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 22:51:31,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:31,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024068834] [2024-06-27 22:51:31,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024068834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:31,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:31,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:31,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336643943] [2024-06-27 22:51:31,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:31,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:31,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:31,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:31,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:31,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 194 transitions, 2690 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 22:51:31,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:31,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:31,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:35,478 INFO L124 PetriNetUnfolderBase]: 17022/27568 cut-off events. [2024-06-27 22:51:35,478 INFO L125 PetriNetUnfolderBase]: For 168377/168651 co-relation queries the response was YES. [2024-06-27 22:51:35,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121829 conditions, 27568 events. 17022/27568 cut-off events. For 168377/168651 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 229544 event pairs, 5663 based on Foata normal form. 132/27543 useless extension candidates. Maximal degree in co-relation 121781. Up to 18200 conditions per place. [2024-06-27 22:51:35,721 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 186 selfloop transitions, 71 changer transitions 0/272 dead transitions. [2024-06-27 22:51:35,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 272 transitions, 3745 flow [2024-06-27 22:51:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:51:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:51:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2024-06-27 22:51:35,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7157894736842105 [2024-06-27 22:51:35,723 INFO L175 Difference]: Start difference. First operand has 111 places, 194 transitions, 2690 flow. Second operand 5 states and 204 transitions. [2024-06-27 22:51:35,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 272 transitions, 3745 flow [2024-06-27 22:51:36,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 272 transitions, 3602 flow, removed 42 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:36,326 INFO L231 Difference]: Finished difference. Result has 116 places, 210 transitions, 3020 flow [2024-06-27 22:51:36,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3020, PETRI_PLACES=116, PETRI_TRANSITIONS=210} [2024-06-27 22:51:36,335 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 53 predicate places. [2024-06-27 22:51:36,335 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 210 transitions, 3020 flow [2024-06-27 22:51:36,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 22:51:36,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:36,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:36,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:51:36,336 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:36,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:36,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2122020484, now seen corresponding path program 1 times [2024-06-27 22:51:36,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:36,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946684519] [2024-06-27 22:51:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:36,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:36,658 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 22:51:36,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946684519] [2024-06-27 22:51:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946684519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:36,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:36,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:36,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737217628] [2024-06-27 22:51:36,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:36,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:36,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:36,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:36,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:36,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 210 transitions, 3020 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 22:51:36,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:36,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:36,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:41,564 INFO L124 PetriNetUnfolderBase]: 18789/30297 cut-off events. [2024-06-27 22:51:41,564 INFO L125 PetriNetUnfolderBase]: For 205744/206582 co-relation queries the response was YES. [2024-06-27 22:51:41,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137026 conditions, 30297 events. 18789/30297 cut-off events. For 205744/206582 co-relation queries the response was YES. Maximal size of possible extension queue 1777. Compared 256500 event pairs, 3683 based on Foata normal form. 304/30380 useless extension candidates. Maximal degree in co-relation 136975. Up to 14228 conditions per place. [2024-06-27 22:51:41,871 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 201 selfloop transitions, 96 changer transitions 0/312 dead transitions. [2024-06-27 22:51:41,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 312 transitions, 4367 flow [2024-06-27 22:51:41,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:51:41,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:51:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-06-27 22:51:41,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2024-06-27 22:51:41,873 INFO L175 Difference]: Start difference. First operand has 116 places, 210 transitions, 3020 flow. Second operand 6 states and 243 transitions. [2024-06-27 22:51:41,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 312 transitions, 4367 flow [2024-06-27 22:51:42,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 312 transitions, 4273 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:42,718 INFO L231 Difference]: Finished difference. Result has 123 places, 227 transitions, 3568 flow [2024-06-27 22:51:42,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3568, PETRI_PLACES=123, PETRI_TRANSITIONS=227} [2024-06-27 22:51:42,719 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 60 predicate places. [2024-06-27 22:51:42,719 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 227 transitions, 3568 flow [2024-06-27 22:51:42,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 22:51:42,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:42,720 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] [2024-06-27 22:51:42,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:51:42,720 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:42,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:42,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1777571702, now seen corresponding path program 1 times [2024-06-27 22:51:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:42,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891981512] [2024-06-27 22:51:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:42,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:43,162 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 22:51:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:43,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891981512] [2024-06-27 22:51:43,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891981512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:43,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:43,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952881515] [2024-06-27 22:51:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:43,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:43,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:43,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:43,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-06-27 22:51:43,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 227 transitions, 3568 flow. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 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 22:51:43,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:43,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-06-27 22:51:43,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand