./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_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 17:49:06,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:49:06,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:49:06,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:49:06,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:49:06,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:49:06,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:49:06,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:49:06,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:49:06,658 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:49:06,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:49:06,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:49:06,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:49:06,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:49:06,663 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:49:06,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:49:06,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:49:06,664 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:49:06,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:49:06,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:49:06,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:49:06,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:49:06,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:49:06,666 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:49:06,666 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:49:06,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:49:06,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:49:06,667 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:49:06,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:49:06,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:49:06,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:49:06,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:49:06,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:49:06,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:49:06,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:49:06,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:49:06,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:49:06,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:49:06,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:49:06,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:49:06,671 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:49:06,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:49:06,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:49:06,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 17:49:06,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:49:06,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:49:06,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:49:06,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:49:06,974 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:49:06,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 17:49:08,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:49:08,389 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:49:08,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 17:49:08,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f0ced59/b2b8d6efebbe4b1e99f76da16e9fff2a/FLAG926cd2d7b [2024-06-27 17:49:08,418 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f0ced59/b2b8d6efebbe4b1e99f76da16e9fff2a [2024-06-27 17:49:08,419 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 17:49:08,420 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 17:49:08,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 17:49:08,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:49:08,546 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 17:49:08,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:49:08,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:49:08,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:49:08,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:49:08" (1/2) ... [2024-06-27 17:49:08,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb63dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:49:08, skipping insertion in model container [2024-06-27 17:49:08,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:49:08" (1/2) ... [2024-06-27 17:49:08,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e5462ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:49:08, skipping insertion in model container [2024-06-27 17:49:08,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:49:08" (2/2) ... [2024-06-27 17:49:08,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb63dc0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:08, skipping insertion in model container [2024-06-27 17:49:08,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:49:08" (2/2) ... [2024-06-27 17:49:08,556 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 17:49:08,625 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 17:49:08,626 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 17:49:08,626 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 17:49:08,627 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 17:49:08,627 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-27 17:49:08,673 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:49:08,829 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2024-06-27 17:49:09,025 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:49:09,034 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 17:49:09,066 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 17:49:09,154 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:49:09,195 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:49:09,195 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09 WrapperNode [2024-06-27 17:49:09,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:49:09,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:49:09,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:49:09,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:49:09,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,257 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 154 [2024-06-27 17:49:09,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:49:09,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:49:09,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:49:09,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:49:09,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,315 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 17:49:09,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:49:09,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:49:09,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:49:09,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:49:09,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (1/1) ... [2024-06-27 17:49:09,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:49:09,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:49:09,413 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 17:49:09,435 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 17:49:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:49:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:49:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 17:49:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 17:49:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 17:49:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 17:49:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:49:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:49:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:49:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:49:09,454 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 17:49:09,580 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:49:09,582 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:49:09,948 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:49:09,950 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:49:10,149 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:49:10,149 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 17:49:10,151 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:49:10 BoogieIcfgContainer [2024-06-27 17:49:10,151 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:49:10,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:49:10,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:49:10,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:49:10,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:49:08" (1/4) ... [2024-06-27 17:49:10,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181556d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:49:10, skipping insertion in model container [2024-06-27 17:49:10,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:49:08" (2/4) ... [2024-06-27 17:49:10,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181556d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 05:49:10, skipping insertion in model container [2024-06-27 17:49:10,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:49:09" (3/4) ... [2024-06-27 17:49:10,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181556d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 05:49:10, skipping insertion in model container [2024-06-27 17:49:10,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:49:10" (4/4) ... [2024-06-27 17:49:10,167 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 17:49:10,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:49:10,210 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 17:49:10,210 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:49:10,258 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:49:10,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 17:49:10,329 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-27 17:49:10,330 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:49:10,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-27 17:49:10,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 17:49:10,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-27 17:49:10,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:49:10,359 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;@28ed5eac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:49:10,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 17:49:10,365 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:49:10,365 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 17:49:10,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:49:10,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:10,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 17:49:10,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:10,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash 392182376, now seen corresponding path program 1 times [2024-06-27 17:49:10,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:10,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580612937] [2024-06-27 17:49:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:10,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:11,140 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 17:49:11,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:11,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580612937] [2024-06-27 17:49:11,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580612937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:11,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:11,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:49:11,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570620701] [2024-06-27 17:49:11,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:11,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:49:11,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:11,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:49:11,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:49:11,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 17:49:11,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:11,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:11,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 17:49:11,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:11,612 INFO L124 PetriNetUnfolderBase]: 741/1259 cut-off events. [2024-06-27 17:49:11,613 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 17:49:11,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2495 conditions, 1259 events. 741/1259 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6431 event pairs, 337 based on Foata normal form. 57/1239 useless extension candidates. Maximal degree in co-relation 2484. Up to 1206 conditions per place. [2024-06-27 17:49:11,627 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 34 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-06-27 17:49:11,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 179 flow [2024-06-27 17:49:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:49:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:49:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-06-27 17:49:11,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-06-27 17:49:11,642 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 75 transitions. [2024-06-27 17:49:11,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 179 flow [2024-06-27 17:49:11,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:11,649 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-06-27 17:49:11,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-27 17:49:11,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-27 17:49:11,655 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-06-27 17:49:11,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:11,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:11,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:11,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:49:11,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:11,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1069842425, now seen corresponding path program 1 times [2024-06-27 17:49:11,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:11,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762756092] [2024-06-27 17:49:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:11,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:12,152 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 17:49:12,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:12,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762756092] [2024-06-27 17:49:12,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762756092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:12,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:12,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:49:12,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396691143] [2024-06-27 17:49:12,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:12,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:49:12,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:49:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:49:12,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 17:49:12,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 17:49:12,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:12,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 17:49:12,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:12,460 INFO L124 PetriNetUnfolderBase]: 733/1379 cut-off events. [2024-06-27 17:49:12,460 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-06-27 17:49:12,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2857 conditions, 1379 events. 733/1379 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7653 event pairs, 447 based on Foata normal form. 4/1269 useless extension candidates. Maximal degree in co-relation 2845. Up to 1171 conditions per place. [2024-06-27 17:49:12,468 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 41 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-06-27 17:49:12,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 261 flow [2024-06-27 17:49:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:49:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:49:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-06-27 17:49:12,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2024-06-27 17:49:12,471 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 4 states and 93 transitions. [2024-06-27 17:49:12,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 261 flow [2024-06-27 17:49:12,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 17:49:12,473 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 170 flow [2024-06-27 17:49:12,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-06-27 17:49:12,474 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-06-27 17:49:12,474 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 170 flow [2024-06-27 17:49:12,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 17:49:12,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:12,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:12,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:49:12,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:12,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1194551855, now seen corresponding path program 1 times [2024-06-27 17:49:12,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:12,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668096130] [2024-06-27 17:49:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:12,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:12,539 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 17:49:12,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:12,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668096130] [2024-06-27 17:49:12,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668096130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:12,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:12,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:49:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479696210] [2024-06-27 17:49:12,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:12,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:49:12,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:12,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:49:12,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:49:12,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-27 17:49:12,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 17:49:12,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:12,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-27 17:49:12,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:12,692 INFO L124 PetriNetUnfolderBase]: 308/700 cut-off events. [2024-06-27 17:49:12,692 INFO L125 PetriNetUnfolderBase]: For 182/193 co-relation queries the response was YES. [2024-06-27 17:49:12,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 700 events. 308/700 cut-off events. For 182/193 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4014 event pairs, 130 based on Foata normal form. 9/663 useless extension candidates. Maximal degree in co-relation 1448. Up to 446 conditions per place. [2024-06-27 17:49:12,697 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 30 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2024-06-27 17:49:12,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 238 flow [2024-06-27 17:49:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:49:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:49:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-27 17:49:12,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2024-06-27 17:49:12,701 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 170 flow. Second operand 3 states and 81 transitions. [2024-06-27 17:49:12,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 238 flow [2024-06-27 17:49:12,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 236 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 17:49:12,704 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 152 flow [2024-06-27 17:49:12,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-06-27 17:49:12,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2024-06-27 17:49:12,706 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 152 flow [2024-06-27 17:49:12,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 17:49:12,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:12,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:12,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:49:12,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:12,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash -990596840, now seen corresponding path program 1 times [2024-06-27 17:49:12,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:12,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369855490] [2024-06-27 17:49:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:12,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:13,956 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 17:49:13,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:13,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369855490] [2024-06-27 17:49:13,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369855490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:13,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:13,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:49:13,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941002832] [2024-06-27 17:49:13,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:13,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:49:13,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:13,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:49:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:49:14,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 17:49:14,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 17:49:14,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:14,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 17:49:14,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:14,436 INFO L124 PetriNetUnfolderBase]: 633/1215 cut-off events. [2024-06-27 17:49:14,436 INFO L125 PetriNetUnfolderBase]: For 533/533 co-relation queries the response was YES. [2024-06-27 17:49:14,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2726 conditions, 1215 events. 633/1215 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6525 event pairs, 285 based on Foata normal form. 4/1164 useless extension candidates. Maximal degree in co-relation 2709. Up to 958 conditions per place. [2024-06-27 17:49:14,444 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 49 selfloop transitions, 11 changer transitions 4/73 dead transitions. [2024-06-27 17:49:14,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 73 transitions, 364 flow [2024-06-27 17:49:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:49:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:49:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 17:49:14,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6157894736842106 [2024-06-27 17:49:14,446 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 152 flow. Second operand 5 states and 117 transitions. [2024-06-27 17:49:14,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 73 transitions, 364 flow [2024-06-27 17:49:14,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 73 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:14,449 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 200 flow [2024-06-27 17:49:14,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-27 17:49:14,450 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-27 17:49:14,450 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 200 flow [2024-06-27 17:49:14,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 17:49:14,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:14,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:14,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:49:14,451 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:14,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1207718831, now seen corresponding path program 1 times [2024-06-27 17:49:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:14,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074924744] [2024-06-27 17:49:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:14,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:14,957 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 17:49:14,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074924744] [2024-06-27 17:49:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074924744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:14,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:14,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:49:14,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549509885] [2024-06-27 17:49:14,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:14,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:49:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:14,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:49:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:49:14,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:49:14,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 17:49:14,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:14,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:49:14,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:15,249 INFO L124 PetriNetUnfolderBase]: 636/1212 cut-off events. [2024-06-27 17:49:15,249 INFO L125 PetriNetUnfolderBase]: For 851/851 co-relation queries the response was YES. [2024-06-27 17:49:15,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2954 conditions, 1212 events. 636/1212 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6410 event pairs, 311 based on Foata normal form. 1/1169 useless extension candidates. Maximal degree in co-relation 2934. Up to 1032 conditions per place. [2024-06-27 17:49:15,258 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 48 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2024-06-27 17:49:15,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 366 flow [2024-06-27 17:49:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:49:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:49:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-27 17:49:15,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 17:49:15,260 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 200 flow. Second operand 5 states and 89 transitions. [2024-06-27 17:49:15,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 366 flow [2024-06-27 17:49:15,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 353 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 17:49:15,266 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 248 flow [2024-06-27 17:49:15,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-06-27 17:49:15,270 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-27 17:49:15,271 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 248 flow [2024-06-27 17:49:15,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 17:49:15,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:15,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:15,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:49:15,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:15,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash 938106693, now seen corresponding path program 1 times [2024-06-27 17:49:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113030252] [2024-06-27 17:49:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:15,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:16,605 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 17:49:16,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:16,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113030252] [2024-06-27 17:49:16,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113030252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:16,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:16,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:49:16,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243799687] [2024-06-27 17:49:16,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:16,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 17:49:16,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:16,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 17:49:16,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 17:49:16,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 17:49:16,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 17:49:16,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:16,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 17:49:16,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:17,143 INFO L124 PetriNetUnfolderBase]: 548/1081 cut-off events. [2024-06-27 17:49:17,144 INFO L125 PetriNetUnfolderBase]: For 998/998 co-relation queries the response was YES. [2024-06-27 17:49:17,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 1081 events. 548/1081 cut-off events. For 998/998 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5834 event pairs, 120 based on Foata normal form. 4/1037 useless extension candidates. Maximal degree in co-relation 2774. Up to 797 conditions per place. [2024-06-27 17:49:17,151 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 55 selfloop transitions, 14 changer transitions 0/78 dead transitions. [2024-06-27 17:49:17,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 452 flow [2024-06-27 17:49:17,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:49:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:49:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-27 17:49:17,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2024-06-27 17:49:17,153 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 248 flow. Second operand 6 states and 129 transitions. [2024-06-27 17:49:17,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 452 flow [2024-06-27 17:49:17,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 443 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:17,156 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 263 flow [2024-06-27 17:49:17,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-06-27 17:49:17,157 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-06-27 17:49:17,157 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 263 flow [2024-06-27 17:49:17,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 17:49:17,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:17,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:17,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:49:17,158 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:17,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1204695425, now seen corresponding path program 1 times [2024-06-27 17:49:17,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:17,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13391144] [2024-06-27 17:49:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:17,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:17,674 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 17:49:17,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:17,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13391144] [2024-06-27 17:49:17,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13391144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:17,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:17,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:49:17,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202030727] [2024-06-27 17:49:17,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:17,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:49:17,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:17,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:49:17,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:49:17,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:17,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 263 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:17,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:17,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:17,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:18,079 INFO L124 PetriNetUnfolderBase]: 732/1353 cut-off events. [2024-06-27 17:49:18,079 INFO L125 PetriNetUnfolderBase]: For 1629/1629 co-relation queries the response was YES. [2024-06-27 17:49:18,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3631 conditions, 1353 events. 732/1353 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7046 event pairs, 357 based on Foata normal form. 1/1303 useless extension candidates. Maximal degree in co-relation 3606. Up to 1169 conditions per place. [2024-06-27 17:49:18,089 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 54 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-27 17:49:18,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 443 flow [2024-06-27 17:49:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:49:18,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:49:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-27 17:49:18,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-06-27 17:49:18,091 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 263 flow. Second operand 6 states and 100 transitions. [2024-06-27 17:49:18,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 443 flow [2024-06-27 17:49:18,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 403 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 17:49:18,096 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 258 flow [2024-06-27 17:49:18,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-27 17:49:18,098 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2024-06-27 17:49:18,098 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 258 flow [2024-06-27 17:49:18,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:18,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:18,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:18,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 17:49:18,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:18,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash -555704540, now seen corresponding path program 1 times [2024-06-27 17:49:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:18,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223086211] [2024-06-27 17:49:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:18,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:18,612 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 17:49:18,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:18,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223086211] [2024-06-27 17:49:18,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223086211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:18,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:18,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:49:18,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171200474] [2024-06-27 17:49:18,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:18,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:49:18,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:49:18,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:49:18,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:49:18,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:49:18,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:18,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:49:18,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:19,042 INFO L124 PetriNetUnfolderBase]: 707/1340 cut-off events. [2024-06-27 17:49:19,042 INFO L125 PetriNetUnfolderBase]: For 1895/1895 co-relation queries the response was YES. [2024-06-27 17:49:19,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 1340 events. 707/1340 cut-off events. For 1895/1895 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7181 event pairs, 281 based on Foata normal form. 2/1290 useless extension candidates. Maximal degree in co-relation 3577. Up to 1091 conditions per place. [2024-06-27 17:49:19,051 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 52 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-27 17:49:19,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 474 flow [2024-06-27 17:49:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:49:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:49:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-27 17:49:19,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 17:49:19,059 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 258 flow. Second operand 6 states and 110 transitions. [2024-06-27 17:49:19,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 474 flow [2024-06-27 17:49:19,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 455 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 17:49:19,065 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 327 flow [2024-06-27 17:49:19,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-06-27 17:49:19,067 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-27 17:49:19,067 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 327 flow [2024-06-27 17:49:19,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:49:19,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:19,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:19,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 17:49:19,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:19,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:19,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1309139318, now seen corresponding path program 2 times [2024-06-27 17:49:19,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:19,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377388768] [2024-06-27 17:49:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:19,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:19,644 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 17:49:19,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377388768] [2024-06-27 17:49:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377388768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:19,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:19,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:49:19,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031004407] [2024-06-27 17:49:19,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:19,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:49:19,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:19,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:49:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:49:19,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:49:19,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:49:19,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:19,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:49:19,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:20,051 INFO L124 PetriNetUnfolderBase]: 698/1351 cut-off events. [2024-06-27 17:49:20,051 INFO L125 PetriNetUnfolderBase]: For 2696/2698 co-relation queries the response was YES. [2024-06-27 17:49:20,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3971 conditions, 1351 events. 698/1351 cut-off events. For 2696/2698 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7423 event pairs, 232 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 3943. Up to 1040 conditions per place. [2024-06-27 17:49:20,061 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 56 selfloop transitions, 22 changer transitions 0/86 dead transitions. [2024-06-27 17:49:20,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 613 flow [2024-06-27 17:49:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:49:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:49:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-27 17:49:20,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 17:49:20,063 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 327 flow. Second operand 6 states and 110 transitions. [2024-06-27 17:49:20,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 613 flow [2024-06-27 17:49:20,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 590 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:20,068 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 438 flow [2024-06-27 17:49:20,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-06-27 17:49:20,069 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-27 17:49:20,069 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 438 flow [2024-06-27 17:49:20,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:49:20,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:20,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:20,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 17:49:20,071 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:20,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:20,072 INFO L85 PathProgramCache]: Analyzing trace with hash 976681678, now seen corresponding path program 1 times [2024-06-27 17:49:20,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:20,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502749439] [2024-06-27 17:49:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:20,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:20,719 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 17:49:20,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:20,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502749439] [2024-06-27 17:49:20,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502749439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:20,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:20,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:49:20,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972149599] [2024-06-27 17:49:20,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:20,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 17:49:20,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 17:49:20,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 17:49:20,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:20,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 17:49:20,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:20,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:20,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:21,167 INFO L124 PetriNetUnfolderBase]: 767/1427 cut-off events. [2024-06-27 17:49:21,167 INFO L125 PetriNetUnfolderBase]: For 3640/3640 co-relation queries the response was YES. [2024-06-27 17:49:21,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4563 conditions, 1427 events. 767/1427 cut-off events. For 3640/3640 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7540 event pairs, 284 based on Foata normal form. 1/1370 useless extension candidates. Maximal degree in co-relation 4532. Up to 1209 conditions per place. [2024-06-27 17:49:21,178 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 74 selfloop transitions, 13 changer transitions 0/93 dead transitions. [2024-06-27 17:49:21,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 705 flow [2024-06-27 17:49:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:49:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:49:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-27 17:49:21,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43609022556390975 [2024-06-27 17:49:21,181 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 438 flow. Second operand 7 states and 116 transitions. [2024-06-27 17:49:21,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 705 flow [2024-06-27 17:49:21,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 659 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 17:49:21,189 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 445 flow [2024-06-27 17:49:21,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-06-27 17:49:21,191 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-27 17:49:21,191 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 445 flow [2024-06-27 17:49:21,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 17:49:21,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:21,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:21,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 17:49:21,192 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:21,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:21,193 INFO L85 PathProgramCache]: Analyzing trace with hash 4328236, now seen corresponding path program 1 times [2024-06-27 17:49:21,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:21,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378379600] [2024-06-27 17:49:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:21,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:21,938 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 17:49:21,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:21,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378379600] [2024-06-27 17:49:21,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378379600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:21,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:21,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:49:21,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248575076] [2024-06-27 17:49:21,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:21,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 17:49:21,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:21,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 17:49:21,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 17:49:22,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:49:22,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 445 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 17:49:22,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:22,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:49:22,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:22,433 INFO L124 PetriNetUnfolderBase]: 717/1374 cut-off events. [2024-06-27 17:49:22,433 INFO L125 PetriNetUnfolderBase]: For 4018/4024 co-relation queries the response was YES. [2024-06-27 17:49:22,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4451 conditions, 1374 events. 717/1374 cut-off events. For 4018/4024 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7450 event pairs, 270 based on Foata normal form. 7/1322 useless extension candidates. Maximal degree in co-relation 4419. Up to 1097 conditions per place. [2024-06-27 17:49:22,446 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 63 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-27 17:49:22,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 94 transitions, 721 flow [2024-06-27 17:49:22,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:49:22,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:49:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-27 17:49:22,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 17:49:22,448 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 445 flow. Second operand 6 states and 111 transitions. [2024-06-27 17:49:22,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 94 transitions, 721 flow [2024-06-27 17:49:22,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 94 transitions, 682 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 17:49:22,456 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 535 flow [2024-06-27 17:49:22,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2024-06-27 17:49:22,457 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-27 17:49:22,457 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 535 flow [2024-06-27 17:49:22,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 17:49:22,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:22,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:22,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 17:49:22,458 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:22,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2058868852, now seen corresponding path program 1 times [2024-06-27 17:49:22,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:22,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584455357] [2024-06-27 17:49:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:23,047 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 17:49:23,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:23,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584455357] [2024-06-27 17:49:23,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584455357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:23,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:23,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:49:23,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732142446] [2024-06-27 17:49:23,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:23,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 17:49:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:23,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 17:49:23,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 17:49:23,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:23,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 535 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 17:49:23,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:23,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:23,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:23,525 INFO L124 PetriNetUnfolderBase]: 789/1468 cut-off events. [2024-06-27 17:49:23,526 INFO L125 PetriNetUnfolderBase]: For 4795/4795 co-relation queries the response was YES. [2024-06-27 17:49:23,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 1468 events. 789/1468 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7755 event pairs, 297 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 4873. Up to 1205 conditions per place. [2024-06-27 17:49:23,546 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 73 selfloop transitions, 23 changer transitions 0/102 dead transitions. [2024-06-27 17:49:23,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 102 transitions, 815 flow [2024-06-27 17:49:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:49:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:49:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 17:49:23,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2024-06-27 17:49:23,548 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 535 flow. Second operand 7 states and 121 transitions. [2024-06-27 17:49:23,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 102 transitions, 815 flow [2024-06-27 17:49:23,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 102 transitions, 793 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:23,561 INFO L231 Difference]: Finished difference. Result has 79 places, 79 transitions, 591 flow [2024-06-27 17:49:23,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=591, PETRI_PLACES=79, PETRI_TRANSITIONS=79} [2024-06-27 17:49:23,562 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2024-06-27 17:49:23,563 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 79 transitions, 591 flow [2024-06-27 17:49:23,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 17:49:23,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:23,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:23,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 17:49:23,564 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:23,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:23,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1928614912, now seen corresponding path program 2 times [2024-06-27 17:49:23,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:23,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867949290] [2024-06-27 17:49:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:23,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:24,139 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 17:49:24,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867949290] [2024-06-27 17:49:24,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867949290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:24,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:24,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:49:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179301073] [2024-06-27 17:49:24,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:24,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 17:49:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 17:49:24,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 17:49:24,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:24,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 79 transitions, 591 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 17:49:24,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:24,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:24,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:24,634 INFO L124 PetriNetUnfolderBase]: 823/1517 cut-off events. [2024-06-27 17:49:24,634 INFO L125 PetriNetUnfolderBase]: For 6214/6216 co-relation queries the response was YES. [2024-06-27 17:49:24,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5377 conditions, 1517 events. 823/1517 cut-off events. For 6214/6216 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8004 event pairs, 290 based on Foata normal form. 2/1460 useless extension candidates. Maximal degree in co-relation 5341. Up to 1148 conditions per place. [2024-06-27 17:49:24,649 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 70 selfloop transitions, 39 changer transitions 0/115 dead transitions. [2024-06-27 17:49:24,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 1029 flow [2024-06-27 17:49:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:49:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:49:24,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 17:49:24,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2024-06-27 17:49:24,651 INFO L175 Difference]: Start difference. First operand has 79 places, 79 transitions, 591 flow. Second operand 7 states and 124 transitions. [2024-06-27 17:49:24,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 1029 flow [2024-06-27 17:49:24,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 115 transitions, 973 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 17:49:24,661 INFO L231 Difference]: Finished difference. Result has 82 places, 91 transitions, 753 flow [2024-06-27 17:49:24,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=753, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2024-06-27 17:49:24,662 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-06-27 17:49:24,662 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 91 transitions, 753 flow [2024-06-27 17:49:24,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 17:49:24,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:24,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:24,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 17:49:24,663 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:24,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:24,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1928911582, now seen corresponding path program 3 times [2024-06-27 17:49:24,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:24,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616759599] [2024-06-27 17:49:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:25,312 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 17:49:25,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:25,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616759599] [2024-06-27 17:49:25,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616759599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:25,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:25,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:49:25,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058824606] [2024-06-27 17:49:25,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:25,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 17:49:25,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:25,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 17:49:25,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 17:49:25,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:25,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 91 transitions, 753 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 17:49:25,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:25,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:25,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:25,810 INFO L124 PetriNetUnfolderBase]: 819/1511 cut-off events. [2024-06-27 17:49:25,810 INFO L125 PetriNetUnfolderBase]: For 7366/7368 co-relation queries the response was YES. [2024-06-27 17:49:25,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5684 conditions, 1511 events. 819/1511 cut-off events. For 7366/7368 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7994 event pairs, 282 based on Foata normal form. 2/1454 useless extension candidates. Maximal degree in co-relation 5646. Up to 1145 conditions per place. [2024-06-27 17:49:25,824 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 67 selfloop transitions, 41 changer transitions 0/114 dead transitions. [2024-06-27 17:49:25,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 1067 flow [2024-06-27 17:49:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:49:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:49:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 17:49:25,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45864661654135336 [2024-06-27 17:49:25,826 INFO L175 Difference]: Start difference. First operand has 82 places, 91 transitions, 753 flow. Second operand 7 states and 122 transitions. [2024-06-27 17:49:25,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 114 transitions, 1067 flow [2024-06-27 17:49:25,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 114 transitions, 1015 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:25,839 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 790 flow [2024-06-27 17:49:25,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=790, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-06-27 17:49:25,840 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-27 17:49:25,840 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 790 flow [2024-06-27 17:49:25,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 17:49:25,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:25,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:25,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 17:49:25,841 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:25,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:25,842 INFO L85 PathProgramCache]: Analyzing trace with hash 212362726, now seen corresponding path program 1 times [2024-06-27 17:49:25,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:25,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787114371] [2024-06-27 17:49:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:25,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:26,765 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 17:49:26,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:26,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787114371] [2024-06-27 17:49:26,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787114371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:26,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:26,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 17:49:26,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058136470] [2024-06-27 17:49:26,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:26,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:49:26,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:26,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:49:26,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:49:26,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:26,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 790 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:26,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:26,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:26,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:27,320 INFO L124 PetriNetUnfolderBase]: 825/1518 cut-off events. [2024-06-27 17:49:27,321 INFO L125 PetriNetUnfolderBase]: For 7689/7689 co-relation queries the response was YES. [2024-06-27 17:49:27,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5837 conditions, 1518 events. 825/1518 cut-off events. For 7689/7689 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8054 event pairs, 283 based on Foata normal form. 2/1461 useless extension candidates. Maximal degree in co-relation 5797. Up to 1273 conditions per place. [2024-06-27 17:49:27,331 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 100 selfloop transitions, 18 changer transitions 0/124 dead transitions. [2024-06-27 17:49:27,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 124 transitions, 1169 flow [2024-06-27 17:49:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:27,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 17:49:27,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 17:49:27,333 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 790 flow. Second operand 8 states and 133 transitions. [2024-06-27 17:49:27,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 124 transitions, 1169 flow [2024-06-27 17:49:27,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 124 transitions, 1084 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 17:49:27,346 INFO L231 Difference]: Finished difference. Result has 90 places, 94 transitions, 784 flow [2024-06-27 17:49:27,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=90, PETRI_TRANSITIONS=94} [2024-06-27 17:49:27,347 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-06-27 17:49:27,347 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 94 transitions, 784 flow [2024-06-27 17:49:27,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:27,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:27,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:27,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 17:49:27,348 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:27,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:27,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2022028081, now seen corresponding path program 1 times [2024-06-27 17:49:27,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:27,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022760681] [2024-06-27 17:49:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:27,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:28,244 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 17:49:28,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:28,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022760681] [2024-06-27 17:49:28,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022760681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:28,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:28,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:49:28,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210904167] [2024-06-27 17:49:28,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:28,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 17:49:28,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:28,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 17:49:28,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 17:49:28,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:49:28,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 94 transitions, 784 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:28,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:28,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:49:28,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:28,787 INFO L124 PetriNetUnfolderBase]: 804/1507 cut-off events. [2024-06-27 17:49:28,787 INFO L125 PetriNetUnfolderBase]: For 8571/8584 co-relation queries the response was YES. [2024-06-27 17:49:28,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5917 conditions, 1507 events. 804/1507 cut-off events. For 8571/8584 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8197 event pairs, 205 based on Foata normal form. 7/1455 useless extension candidates. Maximal degree in co-relation 5876. Up to 1145 conditions per place. [2024-06-27 17:49:28,797 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 95 selfloop transitions, 27 changer transitions 0/135 dead transitions. [2024-06-27 17:49:28,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 135 transitions, 1186 flow [2024-06-27 17:49:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:49:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:49:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-27 17:49:28,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2024-06-27 17:49:28,799 INFO L175 Difference]: Start difference. First operand has 90 places, 94 transitions, 784 flow. Second operand 7 states and 137 transitions. [2024-06-27 17:49:28,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 135 transitions, 1186 flow [2024-06-27 17:49:28,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 1134 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 17:49:28,812 INFO L231 Difference]: Finished difference. Result has 93 places, 102 transitions, 875 flow [2024-06-27 17:49:28,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=875, PETRI_PLACES=93, PETRI_TRANSITIONS=102} [2024-06-27 17:49:28,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2024-06-27 17:49:28,813 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 102 transitions, 875 flow [2024-06-27 17:49:28,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:28,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:28,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:28,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 17:49:28,814 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:28,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash 134177034, now seen corresponding path program 1 times [2024-06-27 17:49:28,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:28,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449201272] [2024-06-27 17:49:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:28,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:29,711 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 17:49:29,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:29,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449201272] [2024-06-27 17:49:29,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449201272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:29,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 17:49:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909912210] [2024-06-27 17:49:29,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:29,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:49:29,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:29,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:49:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:49:29,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:29,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 102 transitions, 875 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:29,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:29,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:29,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:30,328 INFO L124 PetriNetUnfolderBase]: 867/1596 cut-off events. [2024-06-27 17:49:30,328 INFO L125 PetriNetUnfolderBase]: For 9417/9417 co-relation queries the response was YES. [2024-06-27 17:49:30,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6458 conditions, 1596 events. 867/1596 cut-off events. For 9417/9417 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8567 event pairs, 290 based on Foata normal form. 1/1534 useless extension candidates. Maximal degree in co-relation 6414. Up to 1308 conditions per place. [2024-06-27 17:49:30,342 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 93 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-06-27 17:49:30,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 1223 flow [2024-06-27 17:49:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:49:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:49:30,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 17:49:30,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45864661654135336 [2024-06-27 17:49:30,344 INFO L175 Difference]: Start difference. First operand has 93 places, 102 transitions, 875 flow. Second operand 7 states and 122 transitions. [2024-06-27 17:49:30,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 128 transitions, 1223 flow [2024-06-27 17:49:30,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 128 transitions, 1169 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:30,366 INFO L231 Difference]: Finished difference. Result has 98 places, 105 transitions, 927 flow [2024-06-27 17:49:30,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=927, PETRI_PLACES=98, PETRI_TRANSITIONS=105} [2024-06-27 17:49:30,366 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-06-27 17:49:30,366 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 105 transitions, 927 flow [2024-06-27 17:49:30,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:30,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:30,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:30,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 17:49:30,367 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:30,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:30,368 INFO L85 PathProgramCache]: Analyzing trace with hash 134176817, now seen corresponding path program 2 times [2024-06-27 17:49:30,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:30,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434179941] [2024-06-27 17:49:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:30,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:31,408 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 17:49:31,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:31,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434179941] [2024-06-27 17:49:31,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434179941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:31,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:31,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 17:49:31,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64782996] [2024-06-27 17:49:31,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:31,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:49:31,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:49:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:49:31,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:49:31,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 105 transitions, 927 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 17:49:31,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:31,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:49:31,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:32,088 INFO L124 PetriNetUnfolderBase]: 841/1574 cut-off events. [2024-06-27 17:49:32,089 INFO L125 PetriNetUnfolderBase]: For 10738/10762 co-relation queries the response was YES. [2024-06-27 17:49:32,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6475 conditions, 1574 events. 841/1574 cut-off events. For 10738/10762 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8674 event pairs, 200 based on Foata normal form. 10/1520 useless extension candidates. Maximal degree in co-relation 6429. Up to 1132 conditions per place. [2024-06-27 17:49:32,101 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 96 selfloop transitions, 33 changer transitions 0/143 dead transitions. [2024-06-27 17:49:32,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 143 transitions, 1355 flow [2024-06-27 17:49:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:49:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:49:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 17:49:32,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518796992481203 [2024-06-27 17:49:32,103 INFO L175 Difference]: Start difference. First operand has 98 places, 105 transitions, 927 flow. Second operand 7 states and 138 transitions. [2024-06-27 17:49:32,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 143 transitions, 1355 flow [2024-06-27 17:49:32,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 143 transitions, 1314 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 17:49:32,123 INFO L231 Difference]: Finished difference. Result has 102 places, 109 transitions, 1017 flow [2024-06-27 17:49:32,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1017, PETRI_PLACES=102, PETRI_TRANSITIONS=109} [2024-06-27 17:49:32,123 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2024-06-27 17:49:32,124 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 109 transitions, 1017 flow [2024-06-27 17:49:32,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 17:49:32,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:32,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:32,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 17:49:32,124 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:32,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2022243407, now seen corresponding path program 1 times [2024-06-27 17:49:32,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:32,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434616263] [2024-06-27 17:49:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:32,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:32,702 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 17:49:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:32,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434616263] [2024-06-27 17:49:32,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434616263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:32,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:32,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 17:49:32,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320423883] [2024-06-27 17:49:32,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:49:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:32,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:49:32,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:49:32,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:32,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 109 transitions, 1017 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:32,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:32,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:32,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:33,279 INFO L124 PetriNetUnfolderBase]: 919/1678 cut-off events. [2024-06-27 17:49:33,279 INFO L125 PetriNetUnfolderBase]: For 12628/12628 co-relation queries the response was YES. [2024-06-27 17:49:33,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7181 conditions, 1678 events. 919/1678 cut-off events. For 12628/12628 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9041 event pairs, 300 based on Foata normal form. 2/1617 useless extension candidates. Maximal degree in co-relation 7132. Up to 1383 conditions per place. [2024-06-27 17:49:33,294 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 108 selfloop transitions, 26 changer transitions 0/140 dead transitions. [2024-06-27 17:49:33,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 140 transitions, 1411 flow [2024-06-27 17:49:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 17:49:33,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506578947368421 [2024-06-27 17:49:33,299 INFO L175 Difference]: Start difference. First operand has 102 places, 109 transitions, 1017 flow. Second operand 8 states and 137 transitions. [2024-06-27 17:49:33,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 140 transitions, 1411 flow [2024-06-27 17:49:33,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 140 transitions, 1364 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 17:49:33,324 INFO L231 Difference]: Finished difference. Result has 107 places, 112 transitions, 1068 flow [2024-06-27 17:49:33,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=107, PETRI_TRANSITIONS=112} [2024-06-27 17:49:33,325 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2024-06-27 17:49:33,326 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 112 transitions, 1068 flow [2024-06-27 17:49:33,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:33,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:33,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:33,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 17:49:33,327 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:33,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash -342486059, now seen corresponding path program 3 times [2024-06-27 17:49:33,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:33,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721094988] [2024-06-27 17:49:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:33,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:34,329 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 17:49:34,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:34,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721094988] [2024-06-27 17:49:34,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721094988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:34,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:34,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 17:49:34,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539400499] [2024-06-27 17:49:34,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:34,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:49:34,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:34,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:49:34,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:49:34,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:49:34,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 112 transitions, 1068 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 17:49:34,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:34,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:49:34,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:34,872 INFO L124 PetriNetUnfolderBase]: 856/1601 cut-off events. [2024-06-27 17:49:34,872 INFO L125 PetriNetUnfolderBase]: For 13863/13865 co-relation queries the response was YES. [2024-06-27 17:49:34,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7166 conditions, 1601 events. 856/1601 cut-off events. For 13863/13865 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8877 event pairs, 193 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 7115. Up to 1054 conditions per place. [2024-06-27 17:49:34,885 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 101 selfloop transitions, 36 changer transitions 0/151 dead transitions. [2024-06-27 17:49:34,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 151 transitions, 1582 flow [2024-06-27 17:49:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:49:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:49:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 17:49:34,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037593984962406 [2024-06-27 17:49:34,886 INFO L175 Difference]: Start difference. First operand has 107 places, 112 transitions, 1068 flow. Second operand 7 states and 134 transitions. [2024-06-27 17:49:34,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 151 transitions, 1582 flow [2024-06-27 17:49:34,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 151 transitions, 1508 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 17:49:34,910 INFO L231 Difference]: Finished difference. Result has 110 places, 119 transitions, 1200 flow [2024-06-27 17:49:34,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1200, PETRI_PLACES=110, PETRI_TRANSITIONS=119} [2024-06-27 17:49:34,910 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-27 17:49:34,911 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 119 transitions, 1200 flow [2024-06-27 17:49:34,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 17:49:34,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:34,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:34,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 17:49:34,911 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:34,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash 433880159, now seen corresponding path program 2 times [2024-06-27 17:49:34,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:34,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229842642] [2024-06-27 17:49:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:34,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:35,456 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 17:49:35,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229842642] [2024-06-27 17:49:35,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229842642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:35,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:35,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 17:49:35,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463748567] [2024-06-27 17:49:35,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:35,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:49:35,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:35,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:49:35,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:49:35,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:35,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 119 transitions, 1200 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:35,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:35,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:35,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:35,913 INFO L124 PetriNetUnfolderBase]: 965/1762 cut-off events. [2024-06-27 17:49:35,913 INFO L125 PetriNetUnfolderBase]: For 16422/16424 co-relation queries the response was YES. [2024-06-27 17:49:35,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8181 conditions, 1762 events. 965/1762 cut-off events. For 16422/16424 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9711 event pairs, 296 based on Foata normal form. 2/1697 useless extension candidates. Maximal degree in co-relation 8127. Up to 1272 conditions per place. [2024-06-27 17:49:35,926 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 102 selfloop transitions, 52 changer transitions 0/160 dead transitions. [2024-06-27 17:49:35,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 160 transitions, 1840 flow [2024-06-27 17:49:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 17:49:35,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2024-06-27 17:49:35,929 INFO L175 Difference]: Start difference. First operand has 110 places, 119 transitions, 1200 flow. Second operand 8 states and 142 transitions. [2024-06-27 17:49:35,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 160 transitions, 1840 flow [2024-06-27 17:49:35,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 160 transitions, 1779 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:35,964 INFO L231 Difference]: Finished difference. Result has 117 places, 131 transitions, 1445 flow [2024-06-27 17:49:35,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1445, PETRI_PLACES=117, PETRI_TRANSITIONS=131} [2024-06-27 17:49:35,965 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2024-06-27 17:49:35,965 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 131 transitions, 1445 flow [2024-06-27 17:49:35,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:35,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:35,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:35,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 17:49:35,966 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:35,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash -333281353, now seen corresponding path program 3 times [2024-06-27 17:49:35,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:35,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121907988] [2024-06-27 17:49:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:35,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:36,548 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 17:49:36,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:36,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121907988] [2024-06-27 17:49:36,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121907988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:36,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:36,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 17:49:36,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627881573] [2024-06-27 17:49:36,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:36,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:49:36,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:36,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:49:36,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:49:36,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:36,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 131 transitions, 1445 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:36,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:36,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:36,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:37,010 INFO L124 PetriNetUnfolderBase]: 985/1792 cut-off events. [2024-06-27 17:49:37,010 INFO L125 PetriNetUnfolderBase]: For 18065/18067 co-relation queries the response was YES. [2024-06-27 17:49:37,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8719 conditions, 1792 events. 985/1792 cut-off events. For 18065/18067 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9880 event pairs, 277 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 8662. Up to 1289 conditions per place. [2024-06-27 17:49:37,027 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 100 selfloop transitions, 57 changer transitions 0/163 dead transitions. [2024-06-27 17:49:37,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 163 transitions, 1989 flow [2024-06-27 17:49:37,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 17:49:37,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46381578947368424 [2024-06-27 17:49:37,029 INFO L175 Difference]: Start difference. First operand has 117 places, 131 transitions, 1445 flow. Second operand 8 states and 141 transitions. [2024-06-27 17:49:37,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 163 transitions, 1989 flow [2024-06-27 17:49:37,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 163 transitions, 1925 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 17:49:37,069 INFO L231 Difference]: Finished difference. Result has 122 places, 134 transitions, 1549 flow [2024-06-27 17:49:37,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1549, PETRI_PLACES=122, PETRI_TRANSITIONS=134} [2024-06-27 17:49:37,069 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-27 17:49:37,069 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 134 transitions, 1549 flow [2024-06-27 17:49:37,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:37,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:37,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:37,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 17:49:37,070 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:37,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash -332954923, now seen corresponding path program 4 times [2024-06-27 17:49:37,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:37,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607897106] [2024-06-27 17:49:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:37,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:37,643 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 17:49:37,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:37,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607897106] [2024-06-27 17:49:37,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607897106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:37,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:37,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 17:49:37,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689010107] [2024-06-27 17:49:37,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:37,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:49:37,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:49:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:49:37,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:37,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 134 transitions, 1549 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:37,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:37,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:37,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:38,088 INFO L124 PetriNetUnfolderBase]: 981/1786 cut-off events. [2024-06-27 17:49:38,089 INFO L125 PetriNetUnfolderBase]: For 18407/18409 co-relation queries the response was YES. [2024-06-27 17:49:38,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8821 conditions, 1786 events. 981/1786 cut-off events. For 18407/18409 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9815 event pairs, 277 based on Foata normal form. 2/1721 useless extension candidates. Maximal degree in co-relation 8762. Up to 1286 conditions per place. [2024-06-27 17:49:38,101 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 96 selfloop transitions, 60 changer transitions 0/162 dead transitions. [2024-06-27 17:49:38,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 162 transitions, 2003 flow [2024-06-27 17:49:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 17:49:38,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-06-27 17:49:38,103 INFO L175 Difference]: Start difference. First operand has 122 places, 134 transitions, 1549 flow. Second operand 8 states and 139 transitions. [2024-06-27 17:49:38,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 162 transitions, 2003 flow [2024-06-27 17:49:38,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 162 transitions, 1849 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 17:49:38,149 INFO L231 Difference]: Finished difference. Result has 125 places, 134 transitions, 1522 flow [2024-06-27 17:49:38,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1522, PETRI_PLACES=125, PETRI_TRANSITIONS=134} [2024-06-27 17:49:38,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2024-06-27 17:49:38,150 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 134 transitions, 1522 flow [2024-06-27 17:49:38,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:49:38,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:38,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:38,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 17:49:38,150 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:38,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash -604315369, now seen corresponding path program 1 times [2024-06-27 17:49:38,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:38,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163012609] [2024-06-27 17:49:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:39,204 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 17:49:39,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:39,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163012609] [2024-06-27 17:49:39,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163012609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:39,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:39,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:39,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825113959] [2024-06-27 17:49:39,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:39,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:39,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:39,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:39,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 134 transitions, 1522 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:39,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:39,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:39,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:39,865 INFO L124 PetriNetUnfolderBase]: 1127/2037 cut-off events. [2024-06-27 17:49:39,865 INFO L125 PetriNetUnfolderBase]: For 20495/20495 co-relation queries the response was YES. [2024-06-27 17:49:39,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10067 conditions, 2037 events. 1127/2037 cut-off events. For 20495/20495 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11325 event pairs, 259 based on Foata normal form. 2/1966 useless extension candidates. Maximal degree in co-relation 10007. Up to 1553 conditions per place. [2024-06-27 17:49:39,879 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 161 selfloop transitions, 40 changer transitions 0/207 dead transitions. [2024-06-27 17:49:39,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 207 transitions, 2448 flow [2024-06-27 17:49:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:49:39,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:49:39,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 17:49:39,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 17:49:39,881 INFO L175 Difference]: Start difference. First operand has 125 places, 134 transitions, 1522 flow. Second operand 9 states and 164 transitions. [2024-06-27 17:49:39,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 207 transitions, 2448 flow [2024-06-27 17:49:39,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 207 transitions, 2322 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 17:49:39,919 INFO L231 Difference]: Finished difference. Result has 131 places, 157 transitions, 1817 flow [2024-06-27 17:49:39,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1817, PETRI_PLACES=131, PETRI_TRANSITIONS=157} [2024-06-27 17:49:39,920 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 89 predicate places. [2024-06-27 17:49:39,920 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 157 transitions, 1817 flow [2024-06-27 17:49:39,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:39,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:39,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:39,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 17:49:39,921 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:39,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:39,921 INFO L85 PathProgramCache]: Analyzing trace with hash -139232151, now seen corresponding path program 2 times [2024-06-27 17:49:39,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:39,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880407714] [2024-06-27 17:49:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:39,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:40,933 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 17:49:40,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:40,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880407714] [2024-06-27 17:49:40,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880407714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:40,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:40,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:40,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766163955] [2024-06-27 17:49:40,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:40,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:40,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:40,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:40,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:41,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:41,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 157 transitions, 1817 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:41,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:41,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:41,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:41,630 INFO L124 PetriNetUnfolderBase]: 1181/2123 cut-off events. [2024-06-27 17:49:41,630 INFO L125 PetriNetUnfolderBase]: For 22419/22419 co-relation queries the response was YES. [2024-06-27 17:49:41,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10879 conditions, 2123 events. 1181/2123 cut-off events. For 22419/22419 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11880 event pairs, 256 based on Foata normal form. 2/2052 useless extension candidates. Maximal degree in co-relation 10815. Up to 1562 conditions per place. [2024-06-27 17:49:41,642 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 152 selfloop transitions, 49 changer transitions 0/207 dead transitions. [2024-06-27 17:49:41,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 207 transitions, 2515 flow [2024-06-27 17:49:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 17:49:41,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 17:49:41,643 INFO L175 Difference]: Start difference. First operand has 131 places, 157 transitions, 1817 flow. Second operand 8 states and 148 transitions. [2024-06-27 17:49:41,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 207 transitions, 2515 flow [2024-06-27 17:49:41,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 207 transitions, 2450 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 17:49:41,680 INFO L231 Difference]: Finished difference. Result has 138 places, 167 transitions, 2020 flow [2024-06-27 17:49:41,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1767, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2020, PETRI_PLACES=138, PETRI_TRANSITIONS=167} [2024-06-27 17:49:41,680 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2024-06-27 17:49:41,681 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 167 transitions, 2020 flow [2024-06-27 17:49:41,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:41,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:41,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:41,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 17:49:41,681 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:41,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1961651599, now seen corresponding path program 3 times [2024-06-27 17:49:41,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:41,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470287849] [2024-06-27 17:49:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:42,778 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 17:49:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470287849] [2024-06-27 17:49:42,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470287849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:42,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:42,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:42,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935618137] [2024-06-27 17:49:42,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:42,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:42,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:42,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:42,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 167 transitions, 2020 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:42,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:42,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:42,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:43,544 INFO L124 PetriNetUnfolderBase]: 1263/2286 cut-off events. [2024-06-27 17:49:43,545 INFO L125 PetriNetUnfolderBase]: For 26982/26982 co-relation queries the response was YES. [2024-06-27 17:49:43,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12025 conditions, 2286 events. 1263/2286 cut-off events. For 26982/26982 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13144 event pairs, 278 based on Foata normal form. 2/2202 useless extension candidates. Maximal degree in co-relation 11958. Up to 1396 conditions per place. [2024-06-27 17:49:43,561 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 150 selfloop transitions, 64 changer transitions 0/220 dead transitions. [2024-06-27 17:49:43,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 220 transitions, 2891 flow [2024-06-27 17:49:43,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 17:49:43,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 17:49:43,563 INFO L175 Difference]: Start difference. First operand has 138 places, 167 transitions, 2020 flow. Second operand 8 states and 148 transitions. [2024-06-27 17:49:43,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 220 transitions, 2891 flow [2024-06-27 17:49:43,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 220 transitions, 2844 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:43,613 INFO L231 Difference]: Finished difference. Result has 146 places, 177 transitions, 2317 flow [2024-06-27 17:49:43,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2317, PETRI_PLACES=146, PETRI_TRANSITIONS=177} [2024-06-27 17:49:43,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2024-06-27 17:49:43,613 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 177 transitions, 2317 flow [2024-06-27 17:49:43,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:43,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:43,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:43,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 17:49:43,614 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:43,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1961658357, now seen corresponding path program 1 times [2024-06-27 17:49:43,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:43,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49285666] [2024-06-27 17:49:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:44,588 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 17:49:44,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:44,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49285666] [2024-06-27 17:49:44,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49285666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:44,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:44,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:44,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492846384] [2024-06-27 17:49:44,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:44,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:44,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:44,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:44,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:44,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:44,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 177 transitions, 2317 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:44,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:44,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:44,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:45,213 INFO L124 PetriNetUnfolderBase]: 1261/2305 cut-off events. [2024-06-27 17:49:45,213 INFO L125 PetriNetUnfolderBase]: For 31029/31029 co-relation queries the response was YES. [2024-06-27 17:49:45,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12534 conditions, 2305 events. 1261/2305 cut-off events. For 31029/31029 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13512 event pairs, 390 based on Foata normal form. 1/2214 useless extension candidates. Maximal degree in co-relation 12463. Up to 1855 conditions per place. [2024-06-27 17:49:45,228 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 161 selfloop transitions, 44 changer transitions 0/211 dead transitions. [2024-06-27 17:49:45,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 211 transitions, 2914 flow [2024-06-27 17:49:45,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:45,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 17:49:45,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 17:49:45,229 INFO L175 Difference]: Start difference. First operand has 146 places, 177 transitions, 2317 flow. Second operand 8 states and 136 transitions. [2024-06-27 17:49:45,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 211 transitions, 2914 flow [2024-06-27 17:49:45,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 211 transitions, 2808 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-27 17:49:45,284 INFO L231 Difference]: Finished difference. Result has 153 places, 182 transitions, 2420 flow [2024-06-27 17:49:45,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2420, PETRI_PLACES=153, PETRI_TRANSITIONS=182} [2024-06-27 17:49:45,284 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2024-06-27 17:49:45,284 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 182 transitions, 2420 flow [2024-06-27 17:49:45,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:45,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:45,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:45,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 17:49:45,285 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:45,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:45,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1413396363, now seen corresponding path program 4 times [2024-06-27 17:49:45,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:45,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204026313] [2024-06-27 17:49:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:45,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:46,270 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 17:49:46,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:46,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204026313] [2024-06-27 17:49:46,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204026313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:46,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:46,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:46,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698305630] [2024-06-27 17:49:46,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:46,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:46,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:46,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:46,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:46,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:46,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 182 transitions, 2420 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:46,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:46,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:46,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:46,988 INFO L124 PetriNetUnfolderBase]: 1289/2314 cut-off events. [2024-06-27 17:49:46,988 INFO L125 PetriNetUnfolderBase]: For 30701/30701 co-relation queries the response was YES. [2024-06-27 17:49:46,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12806 conditions, 2314 events. 1289/2314 cut-off events. For 30701/30701 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13226 event pairs, 252 based on Foata normal form. 2/2235 useless extension candidates. Maximal degree in co-relation 12731. Up to 1561 conditions per place. [2024-06-27 17:49:47,005 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 164 selfloop transitions, 61 changer transitions 0/231 dead transitions. [2024-06-27 17:49:47,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 231 transitions, 3165 flow [2024-06-27 17:49:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 17:49:47,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-06-27 17:49:47,007 INFO L175 Difference]: Start difference. First operand has 153 places, 182 transitions, 2420 flow. Second operand 8 states and 151 transitions. [2024-06-27 17:49:47,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 231 transitions, 3165 flow [2024-06-27 17:49:47,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 231 transitions, 3090 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 17:49:47,062 INFO L231 Difference]: Finished difference. Result has 159 places, 190 transitions, 2609 flow [2024-06-27 17:49:47,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2609, PETRI_PLACES=159, PETRI_TRANSITIONS=190} [2024-06-27 17:49:47,062 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2024-06-27 17:49:47,062 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 190 transitions, 2609 flow [2024-06-27 17:49:47,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:47,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:47,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:47,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 17:49:47,063 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:47,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2106681937, now seen corresponding path program 1 times [2024-06-27 17:49:47,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:47,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893192327] [2024-06-27 17:49:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:47,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:47,852 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 17:49:47,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:47,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893192327] [2024-06-27 17:49:47,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893192327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:47,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:47,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:47,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918559734] [2024-06-27 17:49:47,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:47,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:47,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:47,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:47,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:47,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:47,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 190 transitions, 2609 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:47,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:47,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:47,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:48,592 INFO L124 PetriNetUnfolderBase]: 1327/2402 cut-off events. [2024-06-27 17:49:48,592 INFO L125 PetriNetUnfolderBase]: For 33988/33988 co-relation queries the response was YES. [2024-06-27 17:49:48,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13489 conditions, 2402 events. 1327/2402 cut-off events. For 33988/33988 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13958 event pairs, 392 based on Foata normal form. 2/2315 useless extension candidates. Maximal degree in co-relation 13412. Up to 1918 conditions per place. [2024-06-27 17:49:48,608 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 191 selfloop transitions, 46 changer transitions 0/243 dead transitions. [2024-06-27 17:49:48,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 243 transitions, 3414 flow [2024-06-27 17:49:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:49:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:49:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 17:49:48,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-06-27 17:49:48,609 INFO L175 Difference]: Start difference. First operand has 159 places, 190 transitions, 2609 flow. Second operand 9 states and 159 transitions. [2024-06-27 17:49:48,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 243 transitions, 3414 flow [2024-06-27 17:49:48,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 243 transitions, 3303 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 17:49:48,673 INFO L231 Difference]: Finished difference. Result has 167 places, 201 transitions, 2815 flow [2024-06-27 17:49:48,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2815, PETRI_PLACES=167, PETRI_TRANSITIONS=201} [2024-06-27 17:49:48,674 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2024-06-27 17:49:48,674 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 201 transitions, 2815 flow [2024-06-27 17:49:48,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:48,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:48,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:48,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 17:49:48,675 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:48,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2027125009, now seen corresponding path program 5 times [2024-06-27 17:49:48,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:48,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230686507] [2024-06-27 17:49:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:49,440 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 17:49:49,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230686507] [2024-06-27 17:49:49,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230686507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:49,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:49,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 17:49:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179448455] [2024-06-27 17:49:49,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:49,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:49:49,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:49,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:49:49,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:49:49,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:49,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 201 transitions, 2815 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 17:49:49,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:49,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:49,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:50,122 INFO L124 PetriNetUnfolderBase]: 1389/2486 cut-off events. [2024-06-27 17:49:50,122 INFO L125 PetriNetUnfolderBase]: For 38608/38610 co-relation queries the response was YES. [2024-06-27 17:49:50,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14485 conditions, 2486 events. 1389/2486 cut-off events. For 38608/38610 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14525 event pairs, 260 based on Foata normal form. 2/2402 useless extension candidates. Maximal degree in co-relation 14403. Up to 1325 conditions per place. [2024-06-27 17:49:50,142 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 162 selfloop transitions, 86 changer transitions 0/254 dead transitions. [2024-06-27 17:49:50,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 254 transitions, 3831 flow [2024-06-27 17:49:50,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 17:49:50,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032894736842105 [2024-06-27 17:49:50,145 INFO L175 Difference]: Start difference. First operand has 167 places, 201 transitions, 2815 flow. Second operand 8 states and 153 transitions. [2024-06-27 17:49:50,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 254 transitions, 3831 flow [2024-06-27 17:49:50,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 254 transitions, 3735 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:50,233 INFO L231 Difference]: Finished difference. Result has 175 places, 210 transitions, 3124 flow [2024-06-27 17:49:50,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3124, PETRI_PLACES=175, PETRI_TRANSITIONS=210} [2024-06-27 17:49:50,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 133 predicate places. [2024-06-27 17:49:50,234 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 210 transitions, 3124 flow [2024-06-27 17:49:50,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 17:49:50,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:50,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:50,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 17:49:50,235 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:50,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1921340393, now seen corresponding path program 6 times [2024-06-27 17:49:50,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:50,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005324127] [2024-06-27 17:49:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:50,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:50,957 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 17:49:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:50,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005324127] [2024-06-27 17:49:50,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005324127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:50,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:50,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 17:49:50,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669752623] [2024-06-27 17:49:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:50,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:49:50,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:50,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:49:50,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:49:50,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:50,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 210 transitions, 3124 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 17:49:50,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:50,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:50,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:51,719 INFO L124 PetriNetUnfolderBase]: 1385/2480 cut-off events. [2024-06-27 17:49:51,719 INFO L125 PetriNetUnfolderBase]: For 42282/42284 co-relation queries the response was YES. [2024-06-27 17:49:51,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15088 conditions, 2480 events. 1385/2480 cut-off events. For 42282/42284 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14461 event pairs, 268 based on Foata normal form. 2/2396 useless extension candidates. Maximal degree in co-relation 15002. Up to 1322 conditions per place. [2024-06-27 17:49:51,735 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 156 selfloop transitions, 90 changer transitions 0/252 dead transitions. [2024-06-27 17:49:51,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 252 transitions, 3939 flow [2024-06-27 17:49:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 17:49:51,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901315789473684 [2024-06-27 17:49:51,736 INFO L175 Difference]: Start difference. First operand has 175 places, 210 transitions, 3124 flow. Second operand 8 states and 149 transitions. [2024-06-27 17:49:51,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 252 transitions, 3939 flow [2024-06-27 17:49:51,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 252 transitions, 3830 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-27 17:49:51,824 INFO L231 Difference]: Finished difference. Result has 182 places, 213 transitions, 3277 flow [2024-06-27 17:49:51,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3025, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3277, PETRI_PLACES=182, PETRI_TRANSITIONS=213} [2024-06-27 17:49:51,825 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2024-06-27 17:49:51,825 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 213 transitions, 3277 flow [2024-06-27 17:49:51,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 17:49:51,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:51,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:51,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 17:49:51,825 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:51,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:51,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1921586471, now seen corresponding path program 2 times [2024-06-27 17:49:51,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:51,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515018073] [2024-06-27 17:49:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:51,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:52,467 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 17:49:52,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:52,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515018073] [2024-06-27 17:49:52,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515018073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:52,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:52,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:52,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728521780] [2024-06-27 17:49:52,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:52,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:52,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:52,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:52,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:52,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:52,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 213 transitions, 3277 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:52,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:52,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:52,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:53,327 INFO L124 PetriNetUnfolderBase]: 1483/2687 cut-off events. [2024-06-27 17:49:53,327 INFO L125 PetriNetUnfolderBase]: For 47751/47753 co-relation queries the response was YES. [2024-06-27 17:49:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16359 conditions, 2687 events. 1483/2687 cut-off events. For 47751/47753 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16110 event pairs, 408 based on Foata normal form. 2/2586 useless extension candidates. Maximal degree in co-relation 16270. Up to 1564 conditions per place. [2024-06-27 17:49:53,349 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 187 selfloop transitions, 80 changer transitions 0/273 dead transitions. [2024-06-27 17:49:53,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 273 transitions, 4374 flow [2024-06-27 17:49:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:49:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:49:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 17:49:53,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 17:49:53,350 INFO L175 Difference]: Start difference. First operand has 182 places, 213 transitions, 3277 flow. Second operand 9 states and 168 transitions. [2024-06-27 17:49:53,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 273 transitions, 4374 flow [2024-06-27 17:49:53,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 273 transitions, 4187 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 17:49:53,459 INFO L231 Difference]: Finished difference. Result has 190 places, 225 transitions, 3535 flow [2024-06-27 17:49:53,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3535, PETRI_PLACES=190, PETRI_TRANSITIONS=225} [2024-06-27 17:49:53,459 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 148 predicate places. [2024-06-27 17:49:53,459 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 225 transitions, 3535 flow [2024-06-27 17:49:53,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:53,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:53,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:53,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 17:49:53,460 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:53,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:53,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2088289883, now seen corresponding path program 7 times [2024-06-27 17:49:53,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:53,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865595499] [2024-06-27 17:49:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:53,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:54,340 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 17:49:54,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:54,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865595499] [2024-06-27 17:49:54,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865595499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:54,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:54,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986761624] [2024-06-27 17:49:54,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:54,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:54,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:54,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:54,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:54,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:54,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 225 transitions, 3535 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:54,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:54,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:54,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:55,057 INFO L124 PetriNetUnfolderBase]: 1479/2632 cut-off events. [2024-06-27 17:49:55,057 INFO L125 PetriNetUnfolderBase]: For 47707/47709 co-relation queries the response was YES. [2024-06-27 17:49:55,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16773 conditions, 2632 events. 1479/2632 cut-off events. For 47707/47709 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 15529 event pairs, 230 based on Foata normal form. 2/2546 useless extension candidates. Maximal degree in co-relation 16680. Up to 1471 conditions per place. [2024-06-27 17:49:55,080 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 160 selfloop transitions, 99 changer transitions 0/265 dead transitions. [2024-06-27 17:49:55,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 265 transitions, 4298 flow [2024-06-27 17:49:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:49:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:49:55,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 17:49:55,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 17:49:55,083 INFO L175 Difference]: Start difference. First operand has 190 places, 225 transitions, 3535 flow. Second operand 8 states and 148 transitions. [2024-06-27 17:49:55,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 265 transitions, 4298 flow [2024-06-27 17:49:55,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 265 transitions, 4160 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-27 17:49:55,210 INFO L231 Difference]: Finished difference. Result has 195 places, 225 transitions, 3601 flow [2024-06-27 17:49:55,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3397, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3601, PETRI_PLACES=195, PETRI_TRANSITIONS=225} [2024-06-27 17:49:55,210 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 153 predicate places. [2024-06-27 17:49:55,210 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 225 transitions, 3601 flow [2024-06-27 17:49:55,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:55,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:55,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:55,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 17:49:55,211 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:55,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1741785571, now seen corresponding path program 3 times [2024-06-27 17:49:55,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:55,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956371299] [2024-06-27 17:49:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:55,888 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 17:49:55,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956371299] [2024-06-27 17:49:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956371299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:55,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:55,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:55,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889538217] [2024-06-27 17:49:55,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:55,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:55,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:55,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:55,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:55,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:55,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 225 transitions, 3601 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:55,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:55,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:55,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:56,719 INFO L124 PetriNetUnfolderBase]: 1511/2740 cut-off events. [2024-06-27 17:49:56,719 INFO L125 PetriNetUnfolderBase]: For 49303/49305 co-relation queries the response was YES. [2024-06-27 17:49:56,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17376 conditions, 2740 events. 1511/2740 cut-off events. For 49303/49305 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16579 event pairs, 370 based on Foata normal form. 2/2636 useless extension candidates. Maximal degree in co-relation 17281. Up to 1567 conditions per place. [2024-06-27 17:49:56,751 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 186 selfloop transitions, 87 changer transitions 0/279 dead transitions. [2024-06-27 17:49:56,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 279 transitions, 4667 flow [2024-06-27 17:49:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:49:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:49:56,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 17:49:56,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 17:49:56,755 INFO L175 Difference]: Start difference. First operand has 195 places, 225 transitions, 3601 flow. Second operand 9 states and 167 transitions. [2024-06-27 17:49:56,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 279 transitions, 4667 flow [2024-06-27 17:49:56,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 279 transitions, 4414 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 17:49:56,895 INFO L231 Difference]: Finished difference. Result has 196 places, 232 transitions, 3703 flow [2024-06-27 17:49:56,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3703, PETRI_PLACES=196, PETRI_TRANSITIONS=232} [2024-06-27 17:49:56,895 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-27 17:49:56,895 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 232 transitions, 3703 flow [2024-06-27 17:49:56,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:56,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:56,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:56,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 17:49:56,896 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:56,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2018553571, now seen corresponding path program 4 times [2024-06-27 17:49:56,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:56,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767808076] [2024-06-27 17:49:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:56,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:57,533 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 17:49:57,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:57,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767808076] [2024-06-27 17:49:57,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767808076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:57,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:57,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:57,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812607496] [2024-06-27 17:49:57,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:57,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:57,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:57,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:57,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:57,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:57,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 232 transitions, 3703 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:57,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:57,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:57,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:58,343 INFO L124 PetriNetUnfolderBase]: 1527/2777 cut-off events. [2024-06-27 17:49:58,343 INFO L125 PetriNetUnfolderBase]: For 50230/50232 co-relation queries the response was YES. [2024-06-27 17:49:58,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17585 conditions, 2777 events. 1527/2777 cut-off events. For 50230/50232 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16882 event pairs, 372 based on Foata normal form. 2/2669 useless extension candidates. Maximal degree in co-relation 17490. Up to 1574 conditions per place. [2024-06-27 17:49:58,363 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 182 selfloop transitions, 94 changer transitions 0/282 dead transitions. [2024-06-27 17:49:58,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 282 transitions, 4709 flow [2024-06-27 17:49:58,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:49:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:49:58,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 17:49:58,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 17:49:58,365 INFO L175 Difference]: Start difference. First operand has 196 places, 232 transitions, 3703 flow. Second operand 9 states and 166 transitions. [2024-06-27 17:49:58,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 282 transitions, 4709 flow [2024-06-27 17:49:58,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 282 transitions, 4531 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 17:49:58,484 INFO L231 Difference]: Finished difference. Result has 202 places, 236 transitions, 3839 flow [2024-06-27 17:49:58,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3526, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3839, PETRI_PLACES=202, PETRI_TRANSITIONS=236} [2024-06-27 17:49:58,485 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2024-06-27 17:49:58,485 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 236 transitions, 3839 flow [2024-06-27 17:49:58,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:58,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:49:58,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:49:58,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 17:49:58,486 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:49:58,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:49:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1731310051, now seen corresponding path program 5 times [2024-06-27 17:49:58,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:49:58,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915776545] [2024-06-27 17:49:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:49:58,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:49:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:49:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:49:59,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:49:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915776545] [2024-06-27 17:49:59,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915776545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:49:59,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:49:59,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:49:59,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583928921] [2024-06-27 17:49:59,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:49:59,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:49:59,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:49:59,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:49:59,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:49:59,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:49:59,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 236 transitions, 3839 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:49:59,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:49:59,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:49:59,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:49:59,890 INFO L124 PetriNetUnfolderBase]: 1569/2808 cut-off events. [2024-06-27 17:49:59,890 INFO L125 PetriNetUnfolderBase]: For 54342/54342 co-relation queries the response was YES. [2024-06-27 17:49:59,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18267 conditions, 2808 events. 1569/2808 cut-off events. For 54342/54342 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17018 event pairs, 476 based on Foata normal form. 4/2712 useless extension candidates. Maximal degree in co-relation 18170. Up to 2354 conditions per place. [2024-06-27 17:49:59,915 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 248 selfloop transitions, 27 changer transitions 0/281 dead transitions. [2024-06-27 17:49:59,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 281 transitions, 4778 flow [2024-06-27 17:49:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:49:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:49:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 17:49:59,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2024-06-27 17:49:59,917 INFO L175 Difference]: Start difference. First operand has 202 places, 236 transitions, 3839 flow. Second operand 9 states and 154 transitions. [2024-06-27 17:49:59,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 281 transitions, 4778 flow [2024-06-27 17:50:00,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 281 transitions, 4546 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 17:50:00,060 INFO L231 Difference]: Finished difference. Result has 206 places, 243 transitions, 3820 flow [2024-06-27 17:50:00,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3620, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3820, PETRI_PLACES=206, PETRI_TRANSITIONS=243} [2024-06-27 17:50:00,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-06-27 17:50:00,061 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 243 transitions, 3820 flow [2024-06-27 17:50:00,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 17:50:00,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:00,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:00,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 17:50:00,061 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:00,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:00,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1731297155, now seen corresponding path program 1 times [2024-06-27 17:50:00,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:00,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946369802] [2024-06-27 17:50:00,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:00,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:01,037 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 17:50:01,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:01,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946369802] [2024-06-27 17:50:01,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946369802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:01,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:01,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:01,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138119665] [2024-06-27 17:50:01,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:01,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:01,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:01,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:01,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:01,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 243 transitions, 3820 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:01,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:01,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:01,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:01,848 INFO L124 PetriNetUnfolderBase]: 1573/2822 cut-off events. [2024-06-27 17:50:01,848 INFO L125 PetriNetUnfolderBase]: For 52415/52415 co-relation queries the response was YES. [2024-06-27 17:50:01,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18064 conditions, 2822 events. 1573/2822 cut-off events. For 52415/52415 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17120 event pairs, 486 based on Foata normal form. 2/2722 useless extension candidates. Maximal degree in co-relation 17966. Up to 2420 conditions per place. [2024-06-27 17:50:01,873 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 257 selfloop transitions, 25 changer transitions 0/288 dead transitions. [2024-06-27 17:50:01,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 288 transitions, 4647 flow [2024-06-27 17:50:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:50:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:50:01,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 17:50:01,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-06-27 17:50:01,875 INFO L175 Difference]: Start difference. First operand has 206 places, 243 transitions, 3820 flow. Second operand 10 states and 164 transitions. [2024-06-27 17:50:01,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 288 transitions, 4647 flow [2024-06-27 17:50:02,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 288 transitions, 4572 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 17:50:02,014 INFO L231 Difference]: Finished difference. Result has 212 places, 248 transitions, 3888 flow [2024-06-27 17:50:02,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3745, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3888, PETRI_PLACES=212, PETRI_TRANSITIONS=248} [2024-06-27 17:50:02,015 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-06-27 17:50:02,015 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 248 transitions, 3888 flow [2024-06-27 17:50:02,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:02,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:02,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:02,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 17:50:02,016 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:02,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:02,016 INFO L85 PathProgramCache]: Analyzing trace with hash -72398432, now seen corresponding path program 1 times [2024-06-27 17:50:02,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:02,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224196678] [2024-06-27 17:50:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:02,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:02,092 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 17:50:02,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:02,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224196678] [2024-06-27 17:50:02,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224196678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:02,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:02,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:50:02,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811989185] [2024-06-27 17:50:02,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:02,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:50:02,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:02,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:50:02,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:50:02,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 17:50:02,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 248 transitions, 3888 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 17:50:02,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:02,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 17:50:02,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:02,762 INFO L124 PetriNetUnfolderBase]: 1632/2922 cut-off events. [2024-06-27 17:50:02,762 INFO L125 PetriNetUnfolderBase]: For 54060/54262 co-relation queries the response was YES. [2024-06-27 17:50:02,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18321 conditions, 2922 events. 1632/2922 cut-off events. For 54060/54262 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17792 event pairs, 265 based on Foata normal form. 141/2956 useless extension candidates. Maximal degree in co-relation 18221. Up to 1095 conditions per place. [2024-06-27 17:50:02,789 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 188 selfloop transitions, 38 changer transitions 115/418 dead transitions. [2024-06-27 17:50:02,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 418 transitions, 6602 flow [2024-06-27 17:50:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:50:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:50:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 17:50:02,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2024-06-27 17:50:02,791 INFO L175 Difference]: Start difference. First operand has 212 places, 248 transitions, 3888 flow. Second operand 8 states and 180 transitions. [2024-06-27 17:50:02,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 418 transitions, 6602 flow [2024-06-27 17:50:02,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 418 transitions, 6471 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 17:50:02,939 INFO L231 Difference]: Finished difference. Result has 218 places, 236 transitions, 3756 flow [2024-06-27 17:50:02,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3795, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3756, PETRI_PLACES=218, PETRI_TRANSITIONS=236} [2024-06-27 17:50:02,940 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 176 predicate places. [2024-06-27 17:50:02,940 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 236 transitions, 3756 flow [2024-06-27 17:50:02,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 17:50:02,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:02,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:02,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 17:50:02,941 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:02,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash 172193668, now seen corresponding path program 1 times [2024-06-27 17:50:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500940391] [2024-06-27 17:50:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:03,870 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 17:50:03,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:03,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500940391] [2024-06-27 17:50:03,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500940391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:03,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:03,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:50:03,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974106744] [2024-06-27 17:50:03,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:03,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:50:03,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:03,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:50:03,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:50:03,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:50:03,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 236 transitions, 3756 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 17:50:03,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:03,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:50:03,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:04,747 INFO L124 PetriNetUnfolderBase]: 1418/2573 cut-off events. [2024-06-27 17:50:04,747 INFO L125 PetriNetUnfolderBase]: For 55467/55505 co-relation queries the response was YES. [2024-06-27 17:50:04,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17476 conditions, 2573 events. 1418/2573 cut-off events. For 55467/55505 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15339 event pairs, 297 based on Foata normal form. 28/2593 useless extension candidates. Maximal degree in co-relation 17370. Up to 1993 conditions per place. [2024-06-27 17:50:04,773 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 168 selfloop transitions, 34 changer transitions 56/283 dead transitions. [2024-06-27 17:50:04,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 283 transitions, 4552 flow [2024-06-27 17:50:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 17:50:04,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 17:50:04,777 INFO L175 Difference]: Start difference. First operand has 218 places, 236 transitions, 3756 flow. Second operand 9 states and 166 transitions. [2024-06-27 17:50:04,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 283 transitions, 4552 flow [2024-06-27 17:50:04,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 283 transitions, 4485 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 17:50:04,942 INFO L231 Difference]: Finished difference. Result has 221 places, 194 transitions, 2969 flow [2024-06-27 17:50:04,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2969, PETRI_PLACES=221, PETRI_TRANSITIONS=194} [2024-06-27 17:50:04,942 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-06-27 17:50:04,943 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 194 transitions, 2969 flow [2024-06-27 17:50:04,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 17:50:04,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:04,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:04,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 17:50:04,943 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:04,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:04,944 INFO L85 PathProgramCache]: Analyzing trace with hash -24120308, now seen corresponding path program 2 times [2024-06-27 17:50:04,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:04,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686601877] [2024-06-27 17:50:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:04,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:06,014 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 17:50:06,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:06,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686601877] [2024-06-27 17:50:06,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686601877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:06,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:06,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:50:06,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116618308] [2024-06-27 17:50:06,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:06,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:50:06,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:06,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:50:06,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:50:06,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:50:06,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 194 transitions, 2969 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 17:50:06,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:06,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:50:06,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:06,774 INFO L124 PetriNetUnfolderBase]: 1195/2144 cut-off events. [2024-06-27 17:50:06,774 INFO L125 PetriNetUnfolderBase]: For 48509/48543 co-relation queries the response was YES. [2024-06-27 17:50:06,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14312 conditions, 2144 events. 1195/2144 cut-off events. For 48509/48543 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11990 event pairs, 242 based on Foata normal form. 19/2153 useless extension candidates. Maximal degree in co-relation 14204. Up to 1672 conditions per place. [2024-06-27 17:50:06,790 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 166 selfloop transitions, 35 changer transitions 0/226 dead transitions. [2024-06-27 17:50:06,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 226 transitions, 3510 flow [2024-06-27 17:50:06,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:50:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:50:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 17:50:06,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039473684210525 [2024-06-27 17:50:06,791 INFO L175 Difference]: Start difference. First operand has 221 places, 194 transitions, 2969 flow. Second operand 8 states and 143 transitions. [2024-06-27 17:50:06,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 226 transitions, 3510 flow [2024-06-27 17:50:06,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 226 transitions, 2971 flow, removed 49 selfloop flow, removed 38 redundant places. [2024-06-27 17:50:06,910 INFO L231 Difference]: Finished difference. Result has 190 places, 197 transitions, 2554 flow [2024-06-27 17:50:06,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2434, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2554, PETRI_PLACES=190, PETRI_TRANSITIONS=197} [2024-06-27 17:50:06,910 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 148 predicate places. [2024-06-27 17:50:06,910 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 197 transitions, 2554 flow [2024-06-27 17:50:06,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 17:50:06,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:06,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:06,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 17:50:06,911 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:06,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash 562642982, now seen corresponding path program 3 times [2024-06-27 17:50:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733351100] [2024-06-27 17:50:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:07,981 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 17:50:07,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:07,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733351100] [2024-06-27 17:50:07,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733351100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:07,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:07,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:50:07,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357584305] [2024-06-27 17:50:07,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:07,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:50:07,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:07,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:50:07,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:50:08,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:50:08,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 197 transitions, 2554 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 17:50:08,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:08,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:50:08,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:08,674 INFO L124 PetriNetUnfolderBase]: 1272/2301 cut-off events. [2024-06-27 17:50:08,674 INFO L125 PetriNetUnfolderBase]: For 45741/45769 co-relation queries the response was YES. [2024-06-27 17:50:08,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14016 conditions, 2301 events. 1272/2301 cut-off events. For 45741/45769 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13343 event pairs, 336 based on Foata normal form. 19/2253 useless extension candidates. Maximal degree in co-relation 13926. Up to 1810 conditions per place. [2024-06-27 17:50:08,693 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 176 selfloop transitions, 53 changer transitions 0/254 dead transitions. [2024-06-27 17:50:08,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 254 transitions, 3598 flow [2024-06-27 17:50:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:50:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:50:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 17:50:08,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-27 17:50:08,694 INFO L175 Difference]: Start difference. First operand has 190 places, 197 transitions, 2554 flow. Second operand 8 states and 145 transitions. [2024-06-27 17:50:08,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 254 transitions, 3598 flow [2024-06-27 17:50:08,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 254 transitions, 3476 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 17:50:08,813 INFO L231 Difference]: Finished difference. Result has 196 places, 224 transitions, 3094 flow [2024-06-27 17:50:08,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3094, PETRI_PLACES=196, PETRI_TRANSITIONS=224} [2024-06-27 17:50:08,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-27 17:50:08,813 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 224 transitions, 3094 flow [2024-06-27 17:50:08,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 17:50:08,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:08,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:08,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 17:50:08,814 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:08,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash -21227636, now seen corresponding path program 1 times [2024-06-27 17:50:08,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:08,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689740979] [2024-06-27 17:50:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:08,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:09,562 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 17:50:09,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:09,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689740979] [2024-06-27 17:50:09,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689740979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:09,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:09,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:09,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582410188] [2024-06-27 17:50:09,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:09,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:09,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:09,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:09,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:09,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:09,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 224 transitions, 3094 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:09,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:09,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:09,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:10,352 INFO L124 PetriNetUnfolderBase]: 1386/2446 cut-off events. [2024-06-27 17:50:10,353 INFO L125 PetriNetUnfolderBase]: For 46236/46236 co-relation queries the response was YES. [2024-06-27 17:50:10,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14993 conditions, 2446 events. 1386/2446 cut-off events. For 46236/46236 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13843 event pairs, 330 based on Foata normal form. 2/2387 useless extension candidates. Maximal degree in co-relation 14898. Up to 1919 conditions per place. [2024-06-27 17:50:10,374 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 199 selfloop transitions, 58 changer transitions 0/263 dead transitions. [2024-06-27 17:50:10,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 263 transitions, 3821 flow [2024-06-27 17:50:10,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 17:50:10,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-06-27 17:50:10,375 INFO L175 Difference]: Start difference. First operand has 196 places, 224 transitions, 3094 flow. Second operand 9 states and 155 transitions. [2024-06-27 17:50:10,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 263 transitions, 3821 flow [2024-06-27 17:50:10,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 263 transitions, 3748 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-06-27 17:50:10,497 INFO L231 Difference]: Finished difference. Result has 204 places, 226 transitions, 3189 flow [2024-06-27 17:50:10,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3033, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3189, PETRI_PLACES=204, PETRI_TRANSITIONS=226} [2024-06-27 17:50:10,498 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2024-06-27 17:50:10,498 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 226 transitions, 3189 flow [2024-06-27 17:50:10,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:10,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:10,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:10,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 17:50:10,499 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:10,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash 681860984, now seen corresponding path program 2 times [2024-06-27 17:50:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280529096] [2024-06-27 17:50:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:10,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:11,449 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 17:50:11,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:11,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280529096] [2024-06-27 17:50:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280529096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:11,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:11,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:11,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471510984] [2024-06-27 17:50:11,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:11,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:11,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:11,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:11,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:11,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:11,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 226 transitions, 3189 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:11,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:11,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:11,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:12,300 INFO L124 PetriNetUnfolderBase]: 1472/2603 cut-off events. [2024-06-27 17:50:12,301 INFO L125 PetriNetUnfolderBase]: For 52462/52462 co-relation queries the response was YES. [2024-06-27 17:50:12,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16114 conditions, 2603 events. 1472/2603 cut-off events. For 52462/52462 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15004 event pairs, 310 based on Foata normal form. 2/2536 useless extension candidates. Maximal degree in co-relation 16016. Up to 1718 conditions per place. [2024-06-27 17:50:12,325 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 181 selfloop transitions, 88 changer transitions 0/275 dead transitions. [2024-06-27 17:50:12,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 275 transitions, 4250 flow [2024-06-27 17:50:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:12,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 17:50:12,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 17:50:12,327 INFO L175 Difference]: Start difference. First operand has 204 places, 226 transitions, 3189 flow. Second operand 9 states and 162 transitions. [2024-06-27 17:50:12,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 275 transitions, 4250 flow [2024-06-27 17:50:12,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 275 transitions, 4116 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 17:50:12,447 INFO L231 Difference]: Finished difference. Result has 207 places, 233 transitions, 3403 flow [2024-06-27 17:50:12,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3403, PETRI_PLACES=207, PETRI_TRANSITIONS=233} [2024-06-27 17:50:12,448 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2024-06-27 17:50:12,448 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 233 transitions, 3403 flow [2024-06-27 17:50:12,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:12,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:12,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:12,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 17:50:12,448 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:12,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:12,449 INFO L85 PathProgramCache]: Analyzing trace with hash 681273778, now seen corresponding path program 3 times [2024-06-27 17:50:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279162461] [2024-06-27 17:50:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:12,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:13,412 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 17:50:13,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:13,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279162461] [2024-06-27 17:50:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279162461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:13,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:13,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:13,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606754894] [2024-06-27 17:50:13,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:13,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:13,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:13,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:13,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 233 transitions, 3403 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:13,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:13,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:13,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:14,254 INFO L124 PetriNetUnfolderBase]: 1503/2674 cut-off events. [2024-06-27 17:50:14,254 INFO L125 PetriNetUnfolderBase]: For 55885/55885 co-relation queries the response was YES. [2024-06-27 17:50:14,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16850 conditions, 2674 events. 1503/2674 cut-off events. For 55885/55885 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15621 event pairs, 308 based on Foata normal form. 2/2600 useless extension candidates. Maximal degree in co-relation 16750. Up to 1827 conditions per place. [2024-06-27 17:50:14,280 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 201 selfloop transitions, 77 changer transitions 0/284 dead transitions. [2024-06-27 17:50:14,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 284 transitions, 4441 flow [2024-06-27 17:50:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 17:50:14,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 17:50:14,281 INFO L175 Difference]: Start difference. First operand has 207 places, 233 transitions, 3403 flow. Second operand 9 states and 163 transitions. [2024-06-27 17:50:14,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 284 transitions, 4441 flow [2024-06-27 17:50:14,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 284 transitions, 4238 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-27 17:50:14,425 INFO L231 Difference]: Finished difference. Result has 214 places, 242 transitions, 3578 flow [2024-06-27 17:50:14,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3258, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3578, PETRI_PLACES=214, PETRI_TRANSITIONS=242} [2024-06-27 17:50:14,426 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2024-06-27 17:50:14,426 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 242 transitions, 3578 flow [2024-06-27 17:50:14,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:14,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:14,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:14,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 17:50:14,427 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:14,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 681653222, now seen corresponding path program 4 times [2024-06-27 17:50:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085632956] [2024-06-27 17:50:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:15,683 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 17:50:15,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:15,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085632956] [2024-06-27 17:50:15,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085632956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:15,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:15,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:15,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387487959] [2024-06-27 17:50:15,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:15,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:15,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:15,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:15,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:15,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:50:15,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 242 transitions, 3578 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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 17:50:15,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:15,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:50:15,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:16,622 INFO L124 PetriNetUnfolderBase]: 1459/2642 cut-off events. [2024-06-27 17:50:16,622 INFO L125 PetriNetUnfolderBase]: For 58017/58072 co-relation queries the response was YES. [2024-06-27 17:50:16,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17096 conditions, 2642 events. 1459/2642 cut-off events. For 58017/58072 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 15770 event pairs, 311 based on Foata normal form. 29/2579 useless extension candidates. Maximal degree in co-relation 16992. Up to 2039 conditions per place. [2024-06-27 17:50:16,647 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 205 selfloop transitions, 61 changer transitions 0/291 dead transitions. [2024-06-27 17:50:16,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 291 transitions, 4552 flow [2024-06-27 17:50:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 17:50:16,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-06-27 17:50:16,649 INFO L175 Difference]: Start difference. First operand has 214 places, 242 transitions, 3578 flow. Second operand 9 states and 157 transitions. [2024-06-27 17:50:16,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 291 transitions, 4552 flow [2024-06-27 17:50:16,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 291 transitions, 4389 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 17:50:16,795 INFO L231 Difference]: Finished difference. Result has 218 places, 257 transitions, 3909 flow [2024-06-27 17:50:16,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3909, PETRI_PLACES=218, PETRI_TRANSITIONS=257} [2024-06-27 17:50:16,796 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 176 predicate places. [2024-06-27 17:50:16,796 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 257 transitions, 3909 flow [2024-06-27 17:50:16,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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 17:50:16,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:16,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:16,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 17:50:16,797 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:16,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:16,797 INFO L85 PathProgramCache]: Analyzing trace with hash 681064528, now seen corresponding path program 4 times [2024-06-27 17:50:16,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:16,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694476971] [2024-06-27 17:50:16,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:16,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:17,573 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 17:50:17,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:17,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694476971] [2024-06-27 17:50:17,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694476971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:17,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:17,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:17,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552933998] [2024-06-27 17:50:17,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:17,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:17,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:17,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:17,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:17,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:17,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 257 transitions, 3909 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:17,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:17,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:17,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:18,333 INFO L124 PetriNetUnfolderBase]: 1575/2793 cut-off events. [2024-06-27 17:50:18,333 INFO L125 PetriNetUnfolderBase]: For 58769/58769 co-relation queries the response was YES. [2024-06-27 17:50:18,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17883 conditions, 2793 events. 1575/2793 cut-off events. For 58769/58769 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 16384 event pairs, 337 based on Foata normal form. 2/2719 useless extension candidates. Maximal degree in co-relation 17777. Up to 1782 conditions per place. [2024-06-27 17:50:18,358 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 192 selfloop transitions, 101 changer transitions 0/299 dead transitions. [2024-06-27 17:50:18,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 299 transitions, 4780 flow [2024-06-27 17:50:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 17:50:18,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-06-27 17:50:18,360 INFO L175 Difference]: Start difference. First operand has 218 places, 257 transitions, 3909 flow. Second operand 9 states and 160 transitions. [2024-06-27 17:50:18,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 299 transitions, 4780 flow [2024-06-27 17:50:18,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 299 transitions, 4648 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 17:50:18,548 INFO L231 Difference]: Finished difference. Result has 222 places, 260 transitions, 4040 flow [2024-06-27 17:50:18,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3787, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4040, PETRI_PLACES=222, PETRI_TRANSITIONS=260} [2024-06-27 17:50:18,548 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 180 predicate places. [2024-06-27 17:50:18,548 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 260 transitions, 4040 flow [2024-06-27 17:50:18,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:18,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:18,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:18,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 17:50:18,549 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:18,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash 681868703, now seen corresponding path program 1 times [2024-06-27 17:50:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:18,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505292674] [2024-06-27 17:50:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:18,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:19,538 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 17:50:19,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505292674] [2024-06-27 17:50:19,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505292674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:19,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:19,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:50:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017722050] [2024-06-27 17:50:19,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:19,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:50:19,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:50:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:50:19,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:19,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 260 transitions, 4040 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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 17:50:19,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:19,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:19,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:20,277 INFO L124 PetriNetUnfolderBase]: 1673/2945 cut-off events. [2024-06-27 17:50:20,277 INFO L125 PetriNetUnfolderBase]: For 61922/61922 co-relation queries the response was YES. [2024-06-27 17:50:20,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19360 conditions, 2945 events. 1673/2945 cut-off events. For 61922/61922 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 17328 event pairs, 437 based on Foata normal form. 1/2870 useless extension candidates. Maximal degree in co-relation 19254. Up to 2504 conditions per place. [2024-06-27 17:50:20,307 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 261 selfloop transitions, 53 changer transitions 0/320 dead transitions. [2024-06-27 17:50:20,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 320 transitions, 5372 flow [2024-06-27 17:50:20,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 17:50:20,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415204678362573 [2024-06-27 17:50:20,308 INFO L175 Difference]: Start difference. First operand has 222 places, 260 transitions, 4040 flow. Second operand 9 states and 151 transitions. [2024-06-27 17:50:20,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 320 transitions, 5372 flow [2024-06-27 17:50:20,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 320 transitions, 5206 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 17:50:20,571 INFO L231 Difference]: Finished difference. Result has 229 places, 289 transitions, 4665 flow [2024-06-27 17:50:20,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3885, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4665, PETRI_PLACES=229, PETRI_TRANSITIONS=289} [2024-06-27 17:50:20,572 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-27 17:50:20,572 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 289 transitions, 4665 flow [2024-06-27 17:50:20,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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 17:50:20,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:20,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:20,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 17:50:20,572 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:20,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:20,573 INFO L85 PathProgramCache]: Analyzing trace with hash -664246464, now seen corresponding path program 1 times [2024-06-27 17:50:20,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:20,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013923235] [2024-06-27 17:50:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:20,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:21,272 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 17:50:21,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:21,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013923235] [2024-06-27 17:50:21,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013923235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:21,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:21,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:21,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912117111] [2024-06-27 17:50:21,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:21,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:21,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:21,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:21,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:21,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:21,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 289 transitions, 4665 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:21,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:21,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:21,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:22,160 INFO L124 PetriNetUnfolderBase]: 1699/2985 cut-off events. [2024-06-27 17:50:22,161 INFO L125 PetriNetUnfolderBase]: For 66633/66633 co-relation queries the response was YES. [2024-06-27 17:50:22,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19904 conditions, 2985 events. 1699/2985 cut-off events. For 66633/66633 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17593 event pairs, 420 based on Foata normal form. 2/2911 useless extension candidates. Maximal degree in co-relation 19793. Up to 2441 conditions per place. [2024-06-27 17:50:22,189 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 282 selfloop transitions, 50 changer transitions 0/338 dead transitions. [2024-06-27 17:50:22,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 338 transitions, 5650 flow [2024-06-27 17:50:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:50:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:50:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 17:50:22,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-06-27 17:50:22,191 INFO L175 Difference]: Start difference. First operand has 229 places, 289 transitions, 4665 flow. Second operand 10 states and 168 transitions. [2024-06-27 17:50:22,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 338 transitions, 5650 flow [2024-06-27 17:50:22,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 338 transitions, 5508 flow, removed 59 selfloop flow, removed 2 redundant places. [2024-06-27 17:50:22,380 INFO L231 Difference]: Finished difference. Result has 237 places, 292 transitions, 4734 flow [2024-06-27 17:50:22,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4547, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4734, PETRI_PLACES=237, PETRI_TRANSITIONS=292} [2024-06-27 17:50:22,381 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-27 17:50:22,381 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 292 transitions, 4734 flow [2024-06-27 17:50:22,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:22,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:22,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:22,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 17:50:22,382 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:22,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:22,382 INFO L85 PathProgramCache]: Analyzing trace with hash -567994164, now seen corresponding path program 5 times [2024-06-27 17:50:22,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:22,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893848525] [2024-06-27 17:50:22,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:22,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:23,566 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 17:50:23,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:23,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893848525] [2024-06-27 17:50:23,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893848525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:23,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:23,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876158317] [2024-06-27 17:50:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:23,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:23,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:23,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:50:23,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 292 transitions, 4734 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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 17:50:23,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:23,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:50:23,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:24,437 INFO L124 PetriNetUnfolderBase]: 1591/2872 cut-off events. [2024-06-27 17:50:24,438 INFO L125 PetriNetUnfolderBase]: For 69682/69708 co-relation queries the response was YES. [2024-06-27 17:50:24,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19535 conditions, 2872 events. 1591/2872 cut-off events. For 69682/69708 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 17454 event pairs, 270 based on Foata normal form. 15/2798 useless extension candidates. Maximal degree in co-relation 19421. Up to 2082 conditions per place. [2024-06-27 17:50:24,470 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 214 selfloop transitions, 79 changer transitions 0/321 dead transitions. [2024-06-27 17:50:24,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 321 transitions, 5462 flow [2024-06-27 17:50:24,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:50:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:50:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 17:50:24,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46381578947368424 [2024-06-27 17:50:24,471 INFO L175 Difference]: Start difference. First operand has 237 places, 292 transitions, 4734 flow. Second operand 8 states and 141 transitions. [2024-06-27 17:50:24,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 321 transitions, 5462 flow [2024-06-27 17:50:24,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 321 transitions, 5311 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 17:50:24,699 INFO L231 Difference]: Finished difference. Result has 237 places, 293 transitions, 4765 flow [2024-06-27 17:50:24,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4583, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4765, PETRI_PLACES=237, PETRI_TRANSITIONS=293} [2024-06-27 17:50:24,700 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-27 17:50:24,700 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 293 transitions, 4765 flow [2024-06-27 17:50:24,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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 17:50:24,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:24,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:24,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 17:50:24,701 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:24,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash -567778962, now seen corresponding path program 5 times [2024-06-27 17:50:24,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:24,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951244633] [2024-06-27 17:50:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:24,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:25,664 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 17:50:25,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:25,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951244633] [2024-06-27 17:50:25,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951244633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:25,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:25,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:25,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496101581] [2024-06-27 17:50:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:25,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:25,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:25,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:25,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 293 transitions, 4765 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:25,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:25,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:25,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:26,724 INFO L124 PetriNetUnfolderBase]: 1768/3032 cut-off events. [2024-06-27 17:50:26,725 INFO L125 PetriNetUnfolderBase]: For 74603/74603 co-relation queries the response was YES. [2024-06-27 17:50:26,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20866 conditions, 3032 events. 1768/3032 cut-off events. For 74603/74603 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17791 event pairs, 256 based on Foata normal form. 2/2977 useless extension candidates. Maximal degree in co-relation 20751. Up to 1624 conditions per place. [2024-06-27 17:50:26,756 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 227 selfloop transitions, 115 changer transitions 0/348 dead transitions. [2024-06-27 17:50:26,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 348 transitions, 6110 flow [2024-06-27 17:50:26,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 17:50:26,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 17:50:26,757 INFO L175 Difference]: Start difference. First operand has 237 places, 293 transitions, 4765 flow. Second operand 9 states and 170 transitions. [2024-06-27 17:50:26,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 348 transitions, 6110 flow [2024-06-27 17:50:26,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 348 transitions, 5938 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 17:50:26,990 INFO L231 Difference]: Finished difference. Result has 241 places, 301 transitions, 5058 flow [2024-06-27 17:50:26,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4593, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5058, PETRI_PLACES=241, PETRI_TRANSITIONS=301} [2024-06-27 17:50:26,990 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 199 predicate places. [2024-06-27 17:50:26,990 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 301 transitions, 5058 flow [2024-06-27 17:50:26,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:26,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:26,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:26,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 17:50:26,991 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:26,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:26,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2142054028, now seen corresponding path program 6 times [2024-06-27 17:50:26,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:26,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89210428] [2024-06-27 17:50:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:26,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:27,834 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 17:50:27,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:27,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89210428] [2024-06-27 17:50:27,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89210428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:27,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:27,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:27,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008359820] [2024-06-27 17:50:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:27,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:27,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:27,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:27,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:27,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:27,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 301 transitions, 5058 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:27,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:27,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:27,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:28,776 INFO L124 PetriNetUnfolderBase]: 1794/3066 cut-off events. [2024-06-27 17:50:28,776 INFO L125 PetriNetUnfolderBase]: For 79232/79232 co-relation queries the response was YES. [2024-06-27 17:50:28,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21709 conditions, 3066 events. 1794/3066 cut-off events. For 79232/79232 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17917 event pairs, 197 based on Foata normal form. 2/3013 useless extension candidates. Maximal degree in co-relation 21592. Up to 1645 conditions per place. [2024-06-27 17:50:28,810 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 184 selfloop transitions, 155 changer transitions 0/345 dead transitions. [2024-06-27 17:50:28,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 345 transitions, 6125 flow [2024-06-27 17:50:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:28,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 17:50:28,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 17:50:28,812 INFO L175 Difference]: Start difference. First operand has 241 places, 301 transitions, 5058 flow. Second operand 9 states and 163 transitions. [2024-06-27 17:50:28,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 345 transitions, 6125 flow [2024-06-27 17:50:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 345 transitions, 6019 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 17:50:29,120 INFO L231 Difference]: Finished difference. Result has 248 places, 304 transitions, 5337 flow [2024-06-27 17:50:29,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4958, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5337, PETRI_PLACES=248, PETRI_TRANSITIONS=304} [2024-06-27 17:50:29,120 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 206 predicate places. [2024-06-27 17:50:29,121 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 304 transitions, 5337 flow [2024-06-27 17:50:29,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:29,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:29,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:29,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 17:50:29,121 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:29,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:29,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1583635910, now seen corresponding path program 7 times [2024-06-27 17:50:29,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:29,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76418128] [2024-06-27 17:50:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:29,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:30,213 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 17:50:30,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76418128] [2024-06-27 17:50:30,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76418128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:30,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:30,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:30,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085477741] [2024-06-27 17:50:30,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:30,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:30,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:30,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:30,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:30,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:30,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 304 transitions, 5337 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:30,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:30,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:30,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:31,227 INFO L124 PetriNetUnfolderBase]: 1820/3124 cut-off events. [2024-06-27 17:50:31,227 INFO L125 PetriNetUnfolderBase]: For 81823/81823 co-relation queries the response was YES. [2024-06-27 17:50:31,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22518 conditions, 3124 events. 1820/3124 cut-off events. For 81823/81823 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18445 event pairs, 258 based on Foata normal form. 2/3065 useless extension candidates. Maximal degree in co-relation 22398. Up to 1666 conditions per place. [2024-06-27 17:50:31,259 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 229 selfloop transitions, 118 changer transitions 0/353 dead transitions. [2024-06-27 17:50:31,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 353 transitions, 6605 flow [2024-06-27 17:50:31,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 17:50:31,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-27 17:50:31,260 INFO L175 Difference]: Start difference. First operand has 248 places, 304 transitions, 5337 flow. Second operand 9 states and 172 transitions. [2024-06-27 17:50:31,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 353 transitions, 6605 flow [2024-06-27 17:50:31,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 353 transitions, 6324 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 17:50:31,527 INFO L231 Difference]: Finished difference. Result has 252 places, 306 transitions, 5331 flow [2024-06-27 17:50:31,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5058, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5331, PETRI_PLACES=252, PETRI_TRANSITIONS=306} [2024-06-27 17:50:31,528 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-27 17:50:31,528 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 306 transitions, 5331 flow [2024-06-27 17:50:31,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:31,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:31,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:31,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 17:50:31,529 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:31,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1583434100, now seen corresponding path program 8 times [2024-06-27 17:50:31,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:31,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986800631] [2024-06-27 17:50:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:31,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:32,336 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 17:50:32,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:32,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986800631] [2024-06-27 17:50:32,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986800631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:32,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:32,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:32,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564785145] [2024-06-27 17:50:32,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:32,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:32,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:32,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:32,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 306 transitions, 5331 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:32,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:32,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:32,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:33,406 INFO L124 PetriNetUnfolderBase]: 1816/3118 cut-off events. [2024-06-27 17:50:33,406 INFO L125 PetriNetUnfolderBase]: For 81735/81735 co-relation queries the response was YES. [2024-06-27 17:50:33,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22238 conditions, 3118 events. 1816/3118 cut-off events. For 81735/81735 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18366 event pairs, 277 based on Foata normal form. 2/3059 useless extension candidates. Maximal degree in co-relation 22117. Up to 1663 conditions per place. [2024-06-27 17:50:33,440 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 218 selfloop transitions, 123 changer transitions 0/347 dead transitions. [2024-06-27 17:50:33,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 347 transitions, 6377 flow [2024-06-27 17:50:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 17:50:33,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 17:50:33,442 INFO L175 Difference]: Start difference. First operand has 252 places, 306 transitions, 5331 flow. Second operand 9 states and 165 transitions. [2024-06-27 17:50:33,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 347 transitions, 6377 flow [2024-06-27 17:50:33,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 347 transitions, 6120 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 17:50:33,747 INFO L231 Difference]: Finished difference. Result has 255 places, 306 transitions, 5325 flow [2024-06-27 17:50:33,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5074, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5325, PETRI_PLACES=255, PETRI_TRANSITIONS=306} [2024-06-27 17:50:33,748 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 213 predicate places. [2024-06-27 17:50:33,748 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 306 transitions, 5325 flow [2024-06-27 17:50:33,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:33,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:33,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:33,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 17:50:33,749 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:33,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1591062580, now seen corresponding path program 2 times [2024-06-27 17:50:33,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:33,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260656447] [2024-06-27 17:50:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:34,703 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 17:50:34,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:34,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260656447] [2024-06-27 17:50:34,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260656447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:34,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:34,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:34,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934792469] [2024-06-27 17:50:34,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:34,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:34,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:34,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:34,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:34,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 306 transitions, 5325 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:34,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:34,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:34,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:35,625 INFO L124 PetriNetUnfolderBase]: 1842/3208 cut-off events. [2024-06-27 17:50:35,625 INFO L125 PetriNetUnfolderBase]: For 84517/84517 co-relation queries the response was YES. [2024-06-27 17:50:35,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22552 conditions, 3208 events. 1842/3208 cut-off events. For 84517/84517 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19090 event pairs, 382 based on Foata normal form. 2/3134 useless extension candidates. Maximal degree in co-relation 22430. Up to 2429 conditions per place. [2024-06-27 17:50:35,661 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 259 selfloop transitions, 87 changer transitions 0/352 dead transitions. [2024-06-27 17:50:35,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 352 transitions, 6309 flow [2024-06-27 17:50:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:50:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:50:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 17:50:35,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 17:50:35,662 INFO L175 Difference]: Start difference. First operand has 255 places, 306 transitions, 5325 flow. Second operand 10 states and 175 transitions. [2024-06-27 17:50:35,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 352 transitions, 6309 flow [2024-06-27 17:50:35,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 352 transitions, 6055 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 17:50:35,960 INFO L231 Difference]: Finished difference. Result has 257 places, 310 transitions, 5414 flow [2024-06-27 17:50:35,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5073, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5414, PETRI_PLACES=257, PETRI_TRANSITIONS=310} [2024-06-27 17:50:35,961 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-27 17:50:35,961 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 310 transitions, 5414 flow [2024-06-27 17:50:35,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:35,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:35,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:35,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 17:50:35,962 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:35,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2142044108, now seen corresponding path program 3 times [2024-06-27 17:50:35,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:35,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865796869] [2024-06-27 17:50:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:35,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:36,955 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 17:50:36,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:36,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865796869] [2024-06-27 17:50:36,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865796869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:36,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:36,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618931443] [2024-06-27 17:50:36,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:36,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:36,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:36,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:37,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:37,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 310 transitions, 5414 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:37,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:37,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:37,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:37,854 INFO L124 PetriNetUnfolderBase]: 1868/3236 cut-off events. [2024-06-27 17:50:37,854 INFO L125 PetriNetUnfolderBase]: For 88262/88262 co-relation queries the response was YES. [2024-06-27 17:50:37,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22875 conditions, 3236 events. 1868/3236 cut-off events. For 88262/88262 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19187 event pairs, 353 based on Foata normal form. 2/3166 useless extension candidates. Maximal degree in co-relation 22752. Up to 2469 conditions per place. [2024-06-27 17:50:37,887 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 246 selfloop transitions, 102 changer transitions 0/354 dead transitions. [2024-06-27 17:50:37,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 354 transitions, 6386 flow [2024-06-27 17:50:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:50:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:50:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 17:50:37,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 17:50:37,888 INFO L175 Difference]: Start difference. First operand has 257 places, 310 transitions, 5414 flow. Second operand 10 states and 171 transitions. [2024-06-27 17:50:37,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 354 transitions, 6386 flow [2024-06-27 17:50:38,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 354 transitions, 6121 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 17:50:38,293 INFO L231 Difference]: Finished difference. Result has 259 places, 313 transitions, 5451 flow [2024-06-27 17:50:38,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5149, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5451, PETRI_PLACES=259, PETRI_TRANSITIONS=313} [2024-06-27 17:50:38,294 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2024-06-27 17:50:38,294 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 313 transitions, 5451 flow [2024-06-27 17:50:38,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:38,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:38,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:38,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 17:50:38,295 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:38,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:38,295 INFO L85 PathProgramCache]: Analyzing trace with hash -312467744, now seen corresponding path program 9 times [2024-06-27 17:50:38,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:38,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539796788] [2024-06-27 17:50:38,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:38,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:39,201 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 17:50:39,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:39,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539796788] [2024-06-27 17:50:39,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539796788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:39,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:39,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:39,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650219543] [2024-06-27 17:50:39,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:39,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:39,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:39,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:39,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:39,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:39,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 313 transitions, 5451 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:39,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:39,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:39,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:40,225 INFO L124 PetriNetUnfolderBase]: 1894/3244 cut-off events. [2024-06-27 17:50:40,225 INFO L125 PetriNetUnfolderBase]: For 90246/90246 co-relation queries the response was YES. [2024-06-27 17:50:40,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23119 conditions, 3244 events. 1894/3244 cut-off events. For 90246/90246 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 19217 event pairs, 219 based on Foata normal form. 2/3183 useless extension candidates. Maximal degree in co-relation 22995. Up to 1764 conditions per place. [2024-06-27 17:50:40,260 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 211 selfloop transitions, 143 changer transitions 0/360 dead transitions. [2024-06-27 17:50:40,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 360 transitions, 6623 flow [2024-06-27 17:50:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 17:50:40,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 17:50:40,262 INFO L175 Difference]: Start difference. First operand has 259 places, 313 transitions, 5451 flow. Second operand 9 states and 168 transitions. [2024-06-27 17:50:40,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 360 transitions, 6623 flow [2024-06-27 17:50:40,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 360 transitions, 6379 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 17:50:40,639 INFO L231 Difference]: Finished difference. Result has 261 places, 315 transitions, 5531 flow [2024-06-27 17:50:40,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5207, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5531, PETRI_PLACES=261, PETRI_TRANSITIONS=315} [2024-06-27 17:50:40,640 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-27 17:50:40,640 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 315 transitions, 5531 flow [2024-06-27 17:50:40,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:40,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:40,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:40,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 17:50:40,641 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:40,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash 12542766, now seen corresponding path program 4 times [2024-06-27 17:50:40,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:40,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53937779] [2024-06-27 17:50:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:41,417 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 17:50:41,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:41,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53937779] [2024-06-27 17:50:41,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53937779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:41,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:41,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:41,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166318112] [2024-06-27 17:50:41,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:41,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:41,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:41,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:41,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:41,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:41,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 315 transitions, 5531 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:41,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:41,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:41,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:42,338 INFO L124 PetriNetUnfolderBase]: 1890/3286 cut-off events. [2024-06-27 17:50:42,339 INFO L125 PetriNetUnfolderBase]: For 90641/90641 co-relation queries the response was YES. [2024-06-27 17:50:42,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23250 conditions, 3286 events. 1890/3286 cut-off events. For 90641/90641 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 19647 event pairs, 522 based on Foata normal form. 2/3212 useless extension candidates. Maximal degree in co-relation 23125. Up to 2897 conditions per place. [2024-06-27 17:50:42,372 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 314 selfloop transitions, 26 changer transitions 0/346 dead transitions. [2024-06-27 17:50:42,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 346 transitions, 6364 flow [2024-06-27 17:50:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 17:50:42,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2024-06-27 17:50:42,373 INFO L175 Difference]: Start difference. First operand has 261 places, 315 transitions, 5531 flow. Second operand 9 states and 149 transitions. [2024-06-27 17:50:42,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 346 transitions, 6364 flow [2024-06-27 17:50:42,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 346 transitions, 6109 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 17:50:42,707 INFO L231 Difference]: Finished difference. Result has 264 places, 315 transitions, 5341 flow [2024-06-27 17:50:42,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5276, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5341, PETRI_PLACES=264, PETRI_TRANSITIONS=315} [2024-06-27 17:50:42,708 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-06-27 17:50:42,708 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 315 transitions, 5341 flow [2024-06-27 17:50:42,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:42,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:42,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:42,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 17:50:42,709 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:42,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1838947128, now seen corresponding path program 10 times [2024-06-27 17:50:42,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:42,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165041061] [2024-06-27 17:50:42,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:42,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:43,554 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 17:50:43,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:43,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165041061] [2024-06-27 17:50:43,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165041061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:43,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:43,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:43,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952841769] [2024-06-27 17:50:43,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:43,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:43,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:43,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:43,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:43,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:43,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 315 transitions, 5341 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:43,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:43,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:43,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:44,504 INFO L124 PetriNetUnfolderBase]: 1886/3232 cut-off events. [2024-06-27 17:50:44,504 INFO L125 PetriNetUnfolderBase]: For 86079/86079 co-relation queries the response was YES. [2024-06-27 17:50:44,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22589 conditions, 3232 events. 1886/3232 cut-off events. For 86079/86079 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 19127 event pairs, 225 based on Foata normal form. 2/3171 useless extension candidates. Maximal degree in co-relation 22463. Up to 1755 conditions per place. [2024-06-27 17:50:44,543 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 205 selfloop transitions, 145 changer transitions 0/356 dead transitions. [2024-06-27 17:50:44,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 356 transitions, 6321 flow [2024-06-27 17:50:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 17:50:44,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 17:50:44,544 INFO L175 Difference]: Start difference. First operand has 264 places, 315 transitions, 5341 flow. Second operand 9 states and 164 transitions. [2024-06-27 17:50:44,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 356 transitions, 6321 flow [2024-06-27 17:50:45,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 356 transitions, 6249 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 17:50:45,095 INFO L231 Difference]: Finished difference. Result has 265 places, 315 transitions, 5564 flow [2024-06-27 17:50:45,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5269, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5564, PETRI_PLACES=265, PETRI_TRANSITIONS=315} [2024-06-27 17:50:45,096 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-27 17:50:45,096 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 315 transitions, 5564 flow [2024-06-27 17:50:45,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:45,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:45,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:45,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 17:50:45,097 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:45,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:45,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1839223958, now seen corresponding path program 5 times [2024-06-27 17:50:45,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:45,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890391826] [2024-06-27 17:50:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:45,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:46,013 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 17:50:46,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890391826] [2024-06-27 17:50:46,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890391826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:46,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:46,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:46,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233757292] [2024-06-27 17:50:46,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:46,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:46,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:46,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:46,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:46,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 315 transitions, 5564 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:46,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:46,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:46,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:46,908 INFO L124 PetriNetUnfolderBase]: 1902/3307 cut-off events. [2024-06-27 17:50:46,908 INFO L125 PetriNetUnfolderBase]: For 91150/91150 co-relation queries the response was YES. [2024-06-27 17:50:46,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23412 conditions, 3307 events. 1902/3307 cut-off events. For 91150/91150 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19788 event pairs, 360 based on Foata normal form. 2/3231 useless extension candidates. Maximal degree in co-relation 23285. Up to 2522 conditions per place. [2024-06-27 17:50:46,947 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 259 selfloop transitions, 95 changer transitions 0/360 dead transitions. [2024-06-27 17:50:46,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 360 transitions, 6556 flow [2024-06-27 17:50:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:50:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:50:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 17:50:46,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 17:50:46,953 INFO L175 Difference]: Start difference. First operand has 265 places, 315 transitions, 5564 flow. Second operand 10 states and 174 transitions. [2024-06-27 17:50:46,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 360 transitions, 6556 flow [2024-06-27 17:50:47,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 360 transitions, 6238 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 17:50:47,373 INFO L231 Difference]: Finished difference. Result has 266 places, 318 transitions, 5540 flow [2024-06-27 17:50:47,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5246, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5540, PETRI_PLACES=266, PETRI_TRANSITIONS=318} [2024-06-27 17:50:47,374 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 224 predicate places. [2024-06-27 17:50:47,374 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 318 transitions, 5540 flow [2024-06-27 17:50:47,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:47,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:47,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:47,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 17:50:47,374 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:47,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:47,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1864325988, now seen corresponding path program 6 times [2024-06-27 17:50:47,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:47,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969860017] [2024-06-27 17:50:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:47,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:48,344 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 17:50:48,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:48,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969860017] [2024-06-27 17:50:48,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969860017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:48,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:48,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:48,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135397043] [2024-06-27 17:50:48,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:48,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:48,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:48,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:48,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:50:48,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 318 transitions, 5540 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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 17:50:48,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:48,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:50:48,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:49,370 INFO L124 PetriNetUnfolderBase]: 1769/3174 cut-off events. [2024-06-27 17:50:49,370 INFO L125 PetriNetUnfolderBase]: For 95052/95126 co-relation queries the response was YES. [2024-06-27 17:50:49,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22383 conditions, 3174 events. 1769/3174 cut-off events. For 95052/95126 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 19562 event pairs, 384 based on Foata normal form. 20/3078 useless extension candidates. Maximal degree in co-relation 22255. Up to 2586 conditions per place. [2024-06-27 17:50:49,403 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 274 selfloop transitions, 57 changer transitions 0/359 dead transitions. [2024-06-27 17:50:49,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 359 transitions, 6385 flow [2024-06-27 17:50:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 17:50:49,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 17:50:49,404 INFO L175 Difference]: Start difference. First operand has 266 places, 318 transitions, 5540 flow. Second operand 9 states and 163 transitions. [2024-06-27 17:50:49,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 359 transitions, 6385 flow [2024-06-27 17:50:49,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 359 transitions, 6096 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 17:50:49,764 INFO L231 Difference]: Finished difference. Result has 267 places, 324 transitions, 5430 flow [2024-06-27 17:50:49,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5251, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5430, PETRI_PLACES=267, PETRI_TRANSITIONS=324} [2024-06-27 17:50:49,765 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-27 17:50:49,765 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 324 transitions, 5430 flow [2024-06-27 17:50:49,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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 17:50:49,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:49,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:49,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 17:50:49,766 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:49,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash -675581143, now seen corresponding path program 2 times [2024-06-27 17:50:49,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:49,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203804240] [2024-06-27 17:50:49,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:49,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:50,738 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 17:50:50,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:50,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203804240] [2024-06-27 17:50:50,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203804240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:50,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:50,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:50,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891473788] [2024-06-27 17:50:50,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:50,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:50,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:50,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:50,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:50,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:50,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 324 transitions, 5430 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:50,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:50,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:50,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:51,861 INFO L124 PetriNetUnfolderBase]: 2009/3511 cut-off events. [2024-06-27 17:50:51,862 INFO L125 PetriNetUnfolderBase]: For 92327/92327 co-relation queries the response was YES. [2024-06-27 17:50:51,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24311 conditions, 3511 events. 2009/3511 cut-off events. For 92327/92327 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 21400 event pairs, 534 based on Foata normal form. 1/3423 useless extension candidates. Maximal degree in co-relation 24182. Up to 2964 conditions per place. [2024-06-27 17:50:51,904 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 329 selfloop transitions, 73 changer transitions 0/408 dead transitions. [2024-06-27 17:50:51,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 408 transitions, 7505 flow [2024-06-27 17:50:51,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:50:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:50:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 17:50:51,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-06-27 17:50:51,905 INFO L175 Difference]: Start difference. First operand has 267 places, 324 transitions, 5430 flow. Second operand 10 states and 168 transitions. [2024-06-27 17:50:51,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 408 transitions, 7505 flow [2024-06-27 17:50:52,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 408 transitions, 7425 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 17:50:52,326 INFO L231 Difference]: Finished difference. Result has 278 places, 365 transitions, 6712 flow [2024-06-27 17:50:52,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5350, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6712, PETRI_PLACES=278, PETRI_TRANSITIONS=365} [2024-06-27 17:50:52,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-27 17:50:52,327 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 365 transitions, 6712 flow [2024-06-27 17:50:52,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 17:50:52,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:52,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:52,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 17:50:52,327 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:52,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:52,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1902610904, now seen corresponding path program 7 times [2024-06-27 17:50:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:52,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560046595] [2024-06-27 17:50:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:52,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:53,527 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 17:50:53,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:53,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560046595] [2024-06-27 17:50:53,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560046595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:53,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:53,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:53,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400907170] [2024-06-27 17:50:53,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:53,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:53,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:53,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:50:53,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 365 transitions, 6712 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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 17:50:53,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:53,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:50:53,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:54,612 INFO L124 PetriNetUnfolderBase]: 1897/3389 cut-off events. [2024-06-27 17:50:54,612 INFO L125 PetriNetUnfolderBase]: For 107099/107253 co-relation queries the response was YES. [2024-06-27 17:50:54,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24221 conditions, 3389 events. 1897/3389 cut-off events. For 107099/107253 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 21172 event pairs, 405 based on Foata normal form. 89/3355 useless extension candidates. Maximal degree in co-relation 24087. Up to 2658 conditions per place. [2024-06-27 17:50:54,653 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 296 selfloop transitions, 87 changer transitions 0/415 dead transitions. [2024-06-27 17:50:54,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 415 transitions, 7900 flow [2024-06-27 17:50:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:50:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:50:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 17:50:54,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-06-27 17:50:54,654 INFO L175 Difference]: Start difference. First operand has 278 places, 365 transitions, 6712 flow. Second operand 9 states and 160 transitions. [2024-06-27 17:50:54,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 415 transitions, 7900 flow [2024-06-27 17:50:55,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 415 transitions, 7733 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 17:50:55,069 INFO L231 Difference]: Finished difference. Result has 284 places, 379 transitions, 7098 flow [2024-06-27 17:50:55,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6545, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7098, PETRI_PLACES=284, PETRI_TRANSITIONS=379} [2024-06-27 17:50:55,070 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 242 predicate places. [2024-06-27 17:50:55,070 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 379 transitions, 7098 flow [2024-06-27 17:50:55,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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 17:50:55,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:55,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:50:55,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 17:50:55,071 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:55,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:55,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1391944078, now seen corresponding path program 8 times [2024-06-27 17:50:55,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:55,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110856757] [2024-06-27 17:50:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:55,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:56,079 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 17:50:56,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:56,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110856757] [2024-06-27 17:50:56,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110856757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:56,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:56,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:50:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110247782] [2024-06-27 17:50:56,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:56,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:50:56,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:56,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:50:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:50:56,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 17:50:56,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 379 transitions, 7098 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 17:50:56,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:56,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 17:50:56,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:50:57,131 INFO L124 PetriNetUnfolderBase]: 1934/3462 cut-off events. [2024-06-27 17:50:57,131 INFO L125 PetriNetUnfolderBase]: For 100949/101010 co-relation queries the response was YES. [2024-06-27 17:50:57,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24977 conditions, 3462 events. 1934/3462 cut-off events. For 100949/101010 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 21851 event pairs, 400 based on Foata normal form. 10/3353 useless extension candidates. Maximal degree in co-relation 24840. Up to 2820 conditions per place. [2024-06-27 17:50:57,176 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 326 selfloop transitions, 71 changer transitions 0/429 dead transitions. [2024-06-27 17:50:57,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 429 transitions, 8289 flow [2024-06-27 17:50:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:50:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:50:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 17:50:57,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45526315789473687 [2024-06-27 17:50:57,178 INFO L175 Difference]: Start difference. First operand has 284 places, 379 transitions, 7098 flow. Second operand 10 states and 173 transitions. [2024-06-27 17:50:57,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 429 transitions, 8289 flow [2024-06-27 17:50:57,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 429 transitions, 8042 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 17:50:57,654 INFO L231 Difference]: Finished difference. Result has 290 places, 394 transitions, 7312 flow [2024-06-27 17:50:57,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6870, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7312, PETRI_PLACES=290, PETRI_TRANSITIONS=394} [2024-06-27 17:50:57,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-06-27 17:50:57,655 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 394 transitions, 7312 flow [2024-06-27 17:50:57,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 17:50:57,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:50:57,656 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 17:50:57,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 17:50:57,656 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:50:57,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:50:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash -706091970, now seen corresponding path program 1 times [2024-06-27 17:50:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:50:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844767234] [2024-06-27 17:50:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:50:57,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:50:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:50:59,075 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 17:50:59,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:50:59,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844767234] [2024-06-27 17:50:59,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844767234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:50:59,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:50:59,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:50:59,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449836964] [2024-06-27 17:50:59,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:50:59,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:50:59,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:50:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:50:59,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:50:59,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:50:59,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 394 transitions, 7312 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:50:59,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:50:59,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:50:59,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:00,303 INFO L124 PetriNetUnfolderBase]: 2113/3696 cut-off events. [2024-06-27 17:51:00,303 INFO L125 PetriNetUnfolderBase]: For 101368/101368 co-relation queries the response was YES. [2024-06-27 17:51:00,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26351 conditions, 3696 events. 2113/3696 cut-off events. For 101368/101368 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22897 event pairs, 484 based on Foata normal form. 2/3609 useless extension candidates. Maximal degree in co-relation 26212. Up to 3024 conditions per place. [2024-06-27 17:51:00,377 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 339 selfloop transitions, 94 changer transitions 0/439 dead transitions. [2024-06-27 17:51:00,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 439 transitions, 8520 flow [2024-06-27 17:51:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:51:00,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:51:00,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 17:51:00,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-06-27 17:51:00,381 INFO L175 Difference]: Start difference. First operand has 290 places, 394 transitions, 7312 flow. Second operand 10 states and 163 transitions. [2024-06-27 17:51:00,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 439 transitions, 8520 flow [2024-06-27 17:51:00,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 439 transitions, 8327 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 17:51:00,994 INFO L231 Difference]: Finished difference. Result has 294 places, 405 transitions, 7597 flow [2024-06-27 17:51:00,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7119, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7597, PETRI_PLACES=294, PETRI_TRANSITIONS=405} [2024-06-27 17:51:00,995 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-27 17:51:00,995 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 405 transitions, 7597 flow [2024-06-27 17:51:00,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:00,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:00,996 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 17:51:00,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 17:51:00,996 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:00,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash -745825050, now seen corresponding path program 2 times [2024-06-27 17:51:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:00,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404678920] [2024-06-27 17:51:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:00,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:02,293 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 17:51:02,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404678920] [2024-06-27 17:51:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404678920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:51:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109228050] [2024-06-27 17:51:02,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:02,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:51:02,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:51:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:51:02,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:02,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 405 transitions, 7597 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:02,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:02,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:02,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:03,329 INFO L124 PetriNetUnfolderBase]: 2129/3727 cut-off events. [2024-06-27 17:51:03,329 INFO L125 PetriNetUnfolderBase]: For 103254/103254 co-relation queries the response was YES. [2024-06-27 17:51:03,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26716 conditions, 3727 events. 2129/3727 cut-off events. For 103254/103254 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 23225 event pairs, 481 based on Foata normal form. 2/3640 useless extension candidates. Maximal degree in co-relation 26576. Up to 2942 conditions per place. [2024-06-27 17:51:03,376 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 357 selfloop transitions, 79 changer transitions 0/442 dead transitions. [2024-06-27 17:51:03,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 442 transitions, 8679 flow [2024-06-27 17:51:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:51:03,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:51:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 17:51:03,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 17:51:03,377 INFO L175 Difference]: Start difference. First operand has 294 places, 405 transitions, 7597 flow. Second operand 9 states and 153 transitions. [2024-06-27 17:51:03,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 442 transitions, 8679 flow [2024-06-27 17:51:03,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 442 transitions, 8524 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 17:51:04,026 INFO L231 Difference]: Finished difference. Result has 298 places, 409 transitions, 7707 flow [2024-06-27 17:51:04,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7455, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7707, PETRI_PLACES=298, PETRI_TRANSITIONS=409} [2024-06-27 17:51:04,027 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-27 17:51:04,027 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 409 transitions, 7707 flow [2024-06-27 17:51:04,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:04,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:04,027 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 17:51:04,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 17:51:04,027 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:04,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:04,027 INFO L85 PathProgramCache]: Analyzing trace with hash -747727830, now seen corresponding path program 3 times [2024-06-27 17:51:04,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:04,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429852943] [2024-06-27 17:51:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:04,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:05,250 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 17:51:05,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:05,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429852943] [2024-06-27 17:51:05,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429852943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:05,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:05,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:51:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437554415] [2024-06-27 17:51:05,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:05,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:51:05,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:05,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:51:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:51:05,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:05,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 409 transitions, 7707 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:05,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:05,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:05,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:06,393 INFO L124 PetriNetUnfolderBase]: 2144/3758 cut-off events. [2024-06-27 17:51:06,393 INFO L125 PetriNetUnfolderBase]: For 105906/105906 co-relation queries the response was YES. [2024-06-27 17:51:06,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27048 conditions, 3758 events. 2144/3758 cut-off events. For 105906/105906 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 23449 event pairs, 454 based on Foata normal form. 2/3671 useless extension candidates. Maximal degree in co-relation 26906. Up to 3164 conditions per place. [2024-06-27 17:51:06,433 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 376 selfloop transitions, 61 changer transitions 0/443 dead transitions. [2024-06-27 17:51:06,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 443 transitions, 8761 flow [2024-06-27 17:51:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:51:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:51:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 17:51:06,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269005847953216 [2024-06-27 17:51:06,434 INFO L175 Difference]: Start difference. First operand has 298 places, 409 transitions, 7707 flow. Second operand 9 states and 146 transitions. [2024-06-27 17:51:06,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 443 transitions, 8761 flow [2024-06-27 17:51:06,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 443 transitions, 8598 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 17:51:06,928 INFO L231 Difference]: Finished difference. Result has 303 places, 412 transitions, 7758 flow [2024-06-27 17:51:06,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7544, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7758, PETRI_PLACES=303, PETRI_TRANSITIONS=412} [2024-06-27 17:51:06,929 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 261 predicate places. [2024-06-27 17:51:06,929 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 412 transitions, 7758 flow [2024-06-27 17:51:06,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:06,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:06,929 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 17:51:06,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 17:51:06,929 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:06,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash -658054936, now seen corresponding path program 1 times [2024-06-27 17:51:06,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:06,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419832884] [2024-06-27 17:51:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:51:07,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:07,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419832884] [2024-06-27 17:51:07,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419832884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:07,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:07,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:51:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307787348] [2024-06-27 17:51:07,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:07,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:51:07,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:51:07,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:51:08,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:08,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 412 transitions, 7758 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:08,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:08,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:08,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:09,102 INFO L124 PetriNetUnfolderBase]: 2170/3797 cut-off events. [2024-06-27 17:51:09,102 INFO L125 PetriNetUnfolderBase]: For 108506/108506 co-relation queries the response was YES. [2024-06-27 17:51:09,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27373 conditions, 3797 events. 2170/3797 cut-off events. For 108506/108506 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23743 event pairs, 463 based on Foata normal form. 2/3710 useless extension candidates. Maximal degree in co-relation 27228. Up to 3107 conditions per place. [2024-06-27 17:51:09,150 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 366 selfloop transitions, 84 changer transitions 0/456 dead transitions. [2024-06-27 17:51:09,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 456 transitions, 8954 flow [2024-06-27 17:51:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:51:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:51:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 17:51:09,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-06-27 17:51:09,151 INFO L175 Difference]: Start difference. First operand has 303 places, 412 transitions, 7758 flow. Second operand 10 states and 172 transitions. [2024-06-27 17:51:09,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 456 transitions, 8954 flow [2024-06-27 17:51:09,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 456 transitions, 8822 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 17:51:09,923 INFO L231 Difference]: Finished difference. Result has 308 places, 415 transitions, 7888 flow [2024-06-27 17:51:09,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7626, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7888, PETRI_PLACES=308, PETRI_TRANSITIONS=415} [2024-06-27 17:51:09,923 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-06-27 17:51:09,923 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 415 transitions, 7888 flow [2024-06-27 17:51:09,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:09,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:09,924 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 17:51:09,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 17:51:09,924 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:09,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1351470256, now seen corresponding path program 4 times [2024-06-27 17:51:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:09,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818643425] [2024-06-27 17:51:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:51:11,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:11,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818643425] [2024-06-27 17:51:11,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818643425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:11,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:11,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:11,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989891527] [2024-06-27 17:51:11,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:11,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:11,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:11,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:11,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:11,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 415 transitions, 7888 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:11,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:11,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:11,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:12,393 INFO L124 PetriNetUnfolderBase]: 2183/3825 cut-off events. [2024-06-27 17:51:12,394 INFO L125 PetriNetUnfolderBase]: For 111586/111586 co-relation queries the response was YES. [2024-06-27 17:51:12,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27804 conditions, 3825 events. 2183/3825 cut-off events. For 111586/111586 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 23971 event pairs, 409 based on Foata normal form. 2/3735 useless extension candidates. Maximal degree in co-relation 27658. Up to 2892 conditions per place. [2024-06-27 17:51:12,445 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 341 selfloop transitions, 103 changer transitions 0/450 dead transitions. [2024-06-27 17:51:12,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 450 transitions, 8949 flow [2024-06-27 17:51:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:51:12,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:51:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 17:51:12,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-06-27 17:51:12,446 INFO L175 Difference]: Start difference. First operand has 308 places, 415 transitions, 7888 flow. Second operand 9 states and 155 transitions. [2024-06-27 17:51:12,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 450 transitions, 8949 flow [2024-06-27 17:51:13,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 450 transitions, 8711 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 17:51:13,061 INFO L231 Difference]: Finished difference. Result has 309 places, 416 transitions, 7883 flow [2024-06-27 17:51:13,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7650, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7883, PETRI_PLACES=309, PETRI_TRANSITIONS=416} [2024-06-27 17:51:13,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-06-27 17:51:13,061 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 416 transitions, 7883 flow [2024-06-27 17:51:13,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:13,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:13,062 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 17:51:13,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 17:51:13,062 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:13,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:13,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1351474906, now seen corresponding path program 5 times [2024-06-27 17:51:13,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:13,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101947550] [2024-06-27 17:51:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:13,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:14,097 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 17:51:14,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:14,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101947550] [2024-06-27 17:51:14,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101947550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:14,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:14,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:14,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282073041] [2024-06-27 17:51:14,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:14,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:14,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:14,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:14,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 416 transitions, 7883 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:14,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:14,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:14,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:15,241 INFO L124 PetriNetUnfolderBase]: 2215/3885 cut-off events. [2024-06-27 17:51:15,241 INFO L125 PetriNetUnfolderBase]: For 120174/120174 co-relation queries the response was YES. [2024-06-27 17:51:15,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28250 conditions, 3885 events. 2215/3885 cut-off events. For 120174/120174 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 24528 event pairs, 410 based on Foata normal form. 2/3795 useless extension candidates. Maximal degree in co-relation 28103. Up to 2846 conditions per place. [2024-06-27 17:51:15,288 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 345 selfloop transitions, 105 changer transitions 0/456 dead transitions. [2024-06-27 17:51:15,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 456 transitions, 9131 flow [2024-06-27 17:51:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:51:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:51:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 17:51:15,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-27 17:51:15,289 INFO L175 Difference]: Start difference. First operand has 309 places, 416 transitions, 7883 flow. Second operand 9 states and 156 transitions. [2024-06-27 17:51:15,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 456 transitions, 9131 flow [2024-06-27 17:51:15,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 456 transitions, 8870 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 17:51:15,896 INFO L231 Difference]: Finished difference. Result has 312 places, 421 transitions, 7920 flow [2024-06-27 17:51:15,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7622, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7920, PETRI_PLACES=312, PETRI_TRANSITIONS=421} [2024-06-27 17:51:15,896 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 270 predicate places. [2024-06-27 17:51:15,896 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 421 transitions, 7920 flow [2024-06-27 17:51:15,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:15,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:15,897 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 17:51:15,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 17:51:15,897 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:15,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1351290332, now seen corresponding path program 2 times [2024-06-27 17:51:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:15,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320321006] [2024-06-27 17:51:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:17,114 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 17:51:17,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:17,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320321006] [2024-06-27 17:51:17,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320321006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:17,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:17,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:17,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568039169] [2024-06-27 17:51:17,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:17,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:17,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:17,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:17,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:17,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:17,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 421 transitions, 7920 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:17,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:17,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:17,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:18,412 INFO L124 PetriNetUnfolderBase]: 2241/3940 cut-off events. [2024-06-27 17:51:18,412 INFO L125 PetriNetUnfolderBase]: For 122973/122973 co-relation queries the response was YES. [2024-06-27 17:51:18,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28556 conditions, 3940 events. 2241/3940 cut-off events. For 122973/122973 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25011 event pairs, 425 based on Foata normal form. 2/3845 useless extension candidates. Maximal degree in co-relation 28407. Up to 2728 conditions per place. [2024-06-27 17:51:18,465 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 340 selfloop transitions, 126 changer transitions 0/472 dead transitions. [2024-06-27 17:51:18,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 472 transitions, 9293 flow [2024-06-27 17:51:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:51:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:51:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 17:51:18,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 17:51:18,466 INFO L175 Difference]: Start difference. First operand has 312 places, 421 transitions, 7920 flow. Second operand 10 states and 181 transitions. [2024-06-27 17:51:18,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 472 transitions, 9293 flow [2024-06-27 17:51:19,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 472 transitions, 9128 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 17:51:19,303 INFO L231 Difference]: Finished difference. Result has 317 places, 424 transitions, 8107 flow [2024-06-27 17:51:19,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7755, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8107, PETRI_PLACES=317, PETRI_TRANSITIONS=424} [2024-06-27 17:51:19,304 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-27 17:51:19,304 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 424 transitions, 8107 flow [2024-06-27 17:51:19,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:19,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:19,304 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 17:51:19,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 17:51:19,304 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:19,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:19,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1345041166, now seen corresponding path program 6 times [2024-06-27 17:51:19,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:19,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158878298] [2024-06-27 17:51:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:19,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:20,464 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 17:51:20,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:20,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158878298] [2024-06-27 17:51:20,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158878298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:20,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:20,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:20,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660842344] [2024-06-27 17:51:20,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:20,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:20,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:20,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:20,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 424 transitions, 8107 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:20,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:20,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:20,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:21,737 INFO L124 PetriNetUnfolderBase]: 2238/3926 cut-off events. [2024-06-27 17:51:21,737 INFO L125 PetriNetUnfolderBase]: For 122775/122775 co-relation queries the response was YES. [2024-06-27 17:51:21,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28786 conditions, 3926 events. 2238/3926 cut-off events. For 122775/122775 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24808 event pairs, 414 based on Foata normal form. 2/3834 useless extension candidates. Maximal degree in co-relation 28635. Up to 2987 conditions per place. [2024-06-27 17:51:21,788 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 341 selfloop transitions, 112 changer transitions 0/459 dead transitions. [2024-06-27 17:51:21,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 459 transitions, 9169 flow [2024-06-27 17:51:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:51:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:51:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 17:51:21,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-06-27 17:51:21,789 INFO L175 Difference]: Start difference. First operand has 317 places, 424 transitions, 8107 flow. Second operand 9 states and 155 transitions. [2024-06-27 17:51:21,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 459 transitions, 9169 flow [2024-06-27 17:51:22,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 459 transitions, 8938 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-27 17:51:22,554 INFO L231 Difference]: Finished difference. Result has 321 places, 424 transitions, 8104 flow [2024-06-27 17:51:22,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7876, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8104, PETRI_PLACES=321, PETRI_TRANSITIONS=424} [2024-06-27 17:51:22,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-27 17:51:22,555 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 424 transitions, 8104 flow [2024-06-27 17:51:22,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:22,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:22,555 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 17:51:22,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 17:51:22,556 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:22,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash -528953506, now seen corresponding path program 3 times [2024-06-27 17:51:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:22,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591470490] [2024-06-27 17:51:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:23,825 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 17:51:23,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:23,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591470490] [2024-06-27 17:51:23,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591470490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:23,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:23,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:23,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523808087] [2024-06-27 17:51:23,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:23,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:23,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:23,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:23,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:23,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:23,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 424 transitions, 8104 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:23,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:23,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:23,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:25,120 INFO L124 PetriNetUnfolderBase]: 2264/3981 cut-off events. [2024-06-27 17:51:25,120 INFO L125 PetriNetUnfolderBase]: For 125335/125335 co-relation queries the response was YES. [2024-06-27 17:51:25,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29016 conditions, 3981 events. 2264/3981 cut-off events. For 125335/125335 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 25347 event pairs, 388 based on Foata normal form. 2/3884 useless extension candidates. Maximal degree in co-relation 28864. Up to 2763 conditions per place. [2024-06-27 17:51:25,168 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 335 selfloop transitions, 135 changer transitions 0/476 dead transitions. [2024-06-27 17:51:25,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 476 transitions, 9501 flow [2024-06-27 17:51:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:51:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:51:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 17:51:25,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 17:51:25,169 INFO L175 Difference]: Start difference. First operand has 321 places, 424 transitions, 8104 flow. Second operand 10 states and 181 transitions. [2024-06-27 17:51:25,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 476 transitions, 9501 flow [2024-06-27 17:51:25,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 476 transitions, 9277 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 17:51:25,834 INFO L231 Difference]: Finished difference. Result has 324 places, 427 transitions, 8256 flow [2024-06-27 17:51:25,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7880, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8256, PETRI_PLACES=324, PETRI_TRANSITIONS=427} [2024-06-27 17:51:25,834 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-06-27 17:51:25,835 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 427 transitions, 8256 flow [2024-06-27 17:51:25,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:25,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:25,835 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 17:51:25,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 17:51:25,835 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:25,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:25,835 INFO L85 PathProgramCache]: Analyzing trace with hash -528722866, now seen corresponding path program 4 times [2024-06-27 17:51:25,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:25,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311222532] [2024-06-27 17:51:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:25,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:26,829 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 17:51:26,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:26,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311222532] [2024-06-27 17:51:26,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311222532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:26,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:26,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:26,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961464493] [2024-06-27 17:51:26,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:26,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:26,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:26,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:26,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:26,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 427 transitions, 8256 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:26,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:26,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:26,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:28,261 INFO L124 PetriNetUnfolderBase]: 2290/4027 cut-off events. [2024-06-27 17:51:28,261 INFO L125 PetriNetUnfolderBase]: For 132295/132295 co-relation queries the response was YES. [2024-06-27 17:51:28,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29698 conditions, 4027 events. 2290/4027 cut-off events. For 132295/132295 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 25665 event pairs, 388 based on Foata normal form. 2/3928 useless extension candidates. Maximal degree in co-relation 29545. Up to 2803 conditions per place. [2024-06-27 17:51:28,314 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 334 selfloop transitions, 138 changer transitions 0/478 dead transitions. [2024-06-27 17:51:28,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 478 transitions, 9621 flow [2024-06-27 17:51:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:51:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:51:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 17:51:28,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 17:51:28,315 INFO L175 Difference]: Start difference. First operand has 324 places, 427 transitions, 8256 flow. Second operand 10 states and 179 transitions. [2024-06-27 17:51:28,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 478 transitions, 9621 flow [2024-06-27 17:51:29,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 478 transitions, 9292 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 17:51:29,071 INFO L231 Difference]: Finished difference. Result has 327 places, 430 transitions, 8315 flow [2024-06-27 17:51:29,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7927, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8315, PETRI_PLACES=327, PETRI_TRANSITIONS=430} [2024-06-27 17:51:29,072 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-06-27 17:51:29,072 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 430 transitions, 8315 flow [2024-06-27 17:51:29,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:29,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:29,072 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 17:51:29,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 17:51:29,072 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:29,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1363228928, now seen corresponding path program 1 times [2024-06-27 17:51:29,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:29,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452008764] [2024-06-27 17:51:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:29,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:30,328 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 17:51:30,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:30,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452008764] [2024-06-27 17:51:30,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452008764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:30,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:30,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:30,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983412578] [2024-06-27 17:51:30,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:30,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:30,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:30,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:30,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:30,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:30,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 430 transitions, 8315 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:30,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:30,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:30,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:31,591 INFO L124 PetriNetUnfolderBase]: 2300/4036 cut-off events. [2024-06-27 17:51:31,591 INFO L125 PetriNetUnfolderBase]: For 133356/133356 co-relation queries the response was YES. [2024-06-27 17:51:31,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29876 conditions, 4036 events. 2300/4036 cut-off events. For 133356/133356 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 25681 event pairs, 564 based on Foata normal form. 1/3940 useless extension candidates. Maximal degree in co-relation 29722. Up to 3229 conditions per place. [2024-06-27 17:51:31,644 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 357 selfloop transitions, 117 changer transitions 0/480 dead transitions. [2024-06-27 17:51:31,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 480 transitions, 9737 flow [2024-06-27 17:51:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:51:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:51:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 17:51:31,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2024-06-27 17:51:31,645 INFO L175 Difference]: Start difference. First operand has 327 places, 430 transitions, 8315 flow. Second operand 10 states and 169 transitions. [2024-06-27 17:51:31,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 480 transitions, 9737 flow [2024-06-27 17:51:32,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 480 transitions, 9361 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-27 17:51:32,477 INFO L231 Difference]: Finished difference. Result has 330 places, 439 transitions, 8498 flow [2024-06-27 17:51:32,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7943, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8498, PETRI_PLACES=330, PETRI_TRANSITIONS=439} [2024-06-27 17:51:32,477 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2024-06-27 17:51:32,478 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 439 transitions, 8498 flow [2024-06-27 17:51:32,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:32,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:32,478 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 17:51:32,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 17:51:32,478 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:32,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash -528714496, now seen corresponding path program 5 times [2024-06-27 17:51:32,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:32,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866772188] [2024-06-27 17:51:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:33,528 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 17:51:33,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:33,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866772188] [2024-06-27 17:51:33,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866772188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:33,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:33,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:33,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652628418] [2024-06-27 17:51:33,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:33,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:33,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:33,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:33,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:33,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:33,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 439 transitions, 8498 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:33,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:33,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:33,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:34,970 INFO L124 PetriNetUnfolderBase]: 2338/4091 cut-off events. [2024-06-27 17:51:34,971 INFO L125 PetriNetUnfolderBase]: For 138527/138527 co-relation queries the response was YES. [2024-06-27 17:51:35,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30317 conditions, 4091 events. 2338/4091 cut-off events. For 138527/138527 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25979 event pairs, 384 based on Foata normal form. 2/3996 useless extension candidates. Maximal degree in co-relation 30161. Up to 2596 conditions per place. [2024-06-27 17:51:35,028 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 335 selfloop transitions, 152 changer transitions 0/493 dead transitions. [2024-06-27 17:51:35,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 493 transitions, 9956 flow [2024-06-27 17:51:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:51:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:51:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 17:51:35,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 17:51:35,030 INFO L175 Difference]: Start difference. First operand has 330 places, 439 transitions, 8498 flow. Second operand 10 states and 181 transitions. [2024-06-27 17:51:35,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 493 transitions, 9956 flow [2024-06-27 17:51:35,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 493 transitions, 9531 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-27 17:51:35,949 INFO L231 Difference]: Finished difference. Result has 333 places, 444 transitions, 8590 flow [2024-06-27 17:51:35,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8073, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8590, PETRI_PLACES=333, PETRI_TRANSITIONS=444} [2024-06-27 17:51:35,950 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-27 17:51:35,950 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 444 transitions, 8590 flow [2024-06-27 17:51:35,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:35,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:35,950 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 17:51:35,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 17:51:35,950 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:35,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash 583912998, now seen corresponding path program 1 times [2024-06-27 17:51:35,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:35,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114171264] [2024-06-27 17:51:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:35,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:36,828 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 17:51:36,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:36,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114171264] [2024-06-27 17:51:36,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114171264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:36,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:36,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:36,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390170865] [2024-06-27 17:51:36,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:36,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:36,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:36,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:36,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:36,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:36,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 444 transitions, 8590 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:36,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:36,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:36,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:38,151 INFO L124 PetriNetUnfolderBase]: 2376/4174 cut-off events. [2024-06-27 17:51:38,151 INFO L125 PetriNetUnfolderBase]: For 146476/146476 co-relation queries the response was YES. [2024-06-27 17:51:38,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31241 conditions, 4174 events. 2376/4174 cut-off events. For 146476/146476 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 26751 event pairs, 573 based on Foata normal form. 4/4077 useless extension candidates. Maximal degree in co-relation 31082. Up to 3418 conditions per place. [2024-06-27 17:51:38,209 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 419 selfloop transitions, 73 changer transitions 0/498 dead transitions. [2024-06-27 17:51:38,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 498 transitions, 9922 flow [2024-06-27 17:51:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:51:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:51:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 17:51:38,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 17:51:38,210 INFO L175 Difference]: Start difference. First operand has 333 places, 444 transitions, 8590 flow. Second operand 11 states and 185 transitions. [2024-06-27 17:51:38,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 498 transitions, 9922 flow [2024-06-27 17:51:39,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 498 transitions, 9665 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 17:51:39,110 INFO L231 Difference]: Finished difference. Result has 338 places, 446 transitions, 8564 flow [2024-06-27 17:51:39,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8333, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8564, PETRI_PLACES=338, PETRI_TRANSITIONS=446} [2024-06-27 17:51:39,110 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-06-27 17:51:39,110 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 446 transitions, 8564 flow [2024-06-27 17:51:39,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:39,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:39,111 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 17:51:39,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 17:51:39,111 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:39,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1172780956, now seen corresponding path program 7 times [2024-06-27 17:51:39,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:39,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467644650] [2024-06-27 17:51:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:39,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:40,353 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 17:51:40,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:40,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467644650] [2024-06-27 17:51:40,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467644650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:40,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:40,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:51:40,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715916071] [2024-06-27 17:51:40,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:40,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:51:40,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:51:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:51:40,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:40,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 446 transitions, 8564 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:40,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:40,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:40,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:41,704 INFO L124 PetriNetUnfolderBase]: 2389/4196 cut-off events. [2024-06-27 17:51:41,705 INFO L125 PetriNetUnfolderBase]: For 141920/141922 co-relation queries the response was YES. [2024-06-27 17:51:41,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31388 conditions, 4196 events. 2389/4196 cut-off events. For 141920/141922 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 26959 event pairs, 289 based on Foata normal form. 2/4096 useless extension candidates. Maximal degree in co-relation 31227. Up to 2998 conditions per place. [2024-06-27 17:51:41,757 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 325 selfloop transitions, 150 changer transitions 0/481 dead transitions. [2024-06-27 17:51:41,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 481 transitions, 9703 flow [2024-06-27 17:51:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:51:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:51:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 17:51:41,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 17:51:41,759 INFO L175 Difference]: Start difference. First operand has 338 places, 446 transitions, 8564 flow. Second operand 9 states and 152 transitions. [2024-06-27 17:51:41,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 481 transitions, 9703 flow [2024-06-27 17:51:42,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 481 transitions, 9490 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 17:51:42,621 INFO L231 Difference]: Finished difference. Result has 338 places, 447 transitions, 8682 flow [2024-06-27 17:51:42,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8351, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8682, PETRI_PLACES=338, PETRI_TRANSITIONS=447} [2024-06-27 17:51:42,621 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-06-27 17:51:42,621 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 447 transitions, 8682 flow [2024-06-27 17:51:42,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:42,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:42,621 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 17:51:42,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 17:51:42,622 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:42,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:42,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1595804264, now seen corresponding path program 6 times [2024-06-27 17:51:42,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:42,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580253674] [2024-06-27 17:51:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:42,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:43,552 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 17:51:43,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:43,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580253674] [2024-06-27 17:51:43,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580253674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:43,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:43,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:51:43,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975603664] [2024-06-27 17:51:43,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:43,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:51:43,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:43,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:51:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:51:43,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:43,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 447 transitions, 8682 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:43,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:43,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:43,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:44,879 INFO L124 PetriNetUnfolderBase]: 2495/4379 cut-off events. [2024-06-27 17:51:44,879 INFO L125 PetriNetUnfolderBase]: For 161845/161845 co-relation queries the response was YES. [2024-06-27 17:51:44,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32956 conditions, 4379 events. 2495/4379 cut-off events. For 161845/161845 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28317 event pairs, 694 based on Foata normal form. 4/4277 useless extension candidates. Maximal degree in co-relation 32794. Up to 3768 conditions per place. [2024-06-27 17:51:44,935 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 463 selfloop transitions, 31 changer transitions 0/500 dead transitions. [2024-06-27 17:51:44,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 500 transitions, 10377 flow [2024-06-27 17:51:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:51:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:51:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 17:51:44,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 17:51:44,936 INFO L175 Difference]: Start difference. First operand has 338 places, 447 transitions, 8682 flow. Second operand 10 states and 170 transitions. [2024-06-27 17:51:44,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 500 transitions, 10377 flow [2024-06-27 17:51:45,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 500 transitions, 10057 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 17:51:45,771 INFO L231 Difference]: Finished difference. Result has 343 places, 457 transitions, 8648 flow [2024-06-27 17:51:45,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8362, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8648, PETRI_PLACES=343, PETRI_TRANSITIONS=457} [2024-06-27 17:51:45,772 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 301 predicate places. [2024-06-27 17:51:45,772 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 457 transitions, 8648 flow [2024-06-27 17:51:45,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:45,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:45,772 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 17:51:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 17:51:45,772 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:45,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1848067790, now seen corresponding path program 8 times [2024-06-27 17:51:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697917554] [2024-06-27 17:51:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:46,850 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 17:51:46,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:46,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697917554] [2024-06-27 17:51:46,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697917554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:46,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:46,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:46,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448108890] [2024-06-27 17:51:46,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:46,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:46,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:46,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:46,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 457 transitions, 8648 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:46,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:46,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:46,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:48,348 INFO L124 PetriNetUnfolderBase]: 2508/4409 cut-off events. [2024-06-27 17:51:48,348 INFO L125 PetriNetUnfolderBase]: For 157539/157541 co-relation queries the response was YES. [2024-06-27 17:51:48,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33041 conditions, 4409 events. 2508/4409 cut-off events. For 157539/157541 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28544 event pairs, 322 based on Foata normal form. 2/4301 useless extension candidates. Maximal degree in co-relation 32876. Up to 3187 conditions per place. [2024-06-27 17:51:48,412 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 373 selfloop transitions, 114 changer transitions 0/493 dead transitions. [2024-06-27 17:51:48,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 493 transitions, 9815 flow [2024-06-27 17:51:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:51:48,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:51:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 17:51:48,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-06-27 17:51:48,414 INFO L175 Difference]: Start difference. First operand has 343 places, 457 transitions, 8648 flow. Second operand 9 states and 155 transitions. [2024-06-27 17:51:48,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 493 transitions, 9815 flow [2024-06-27 17:51:49,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 493 transitions, 9744 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 17:51:49,527 INFO L231 Difference]: Finished difference. Result has 348 places, 458 transitions, 8838 flow [2024-06-27 17:51:49,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8577, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8838, PETRI_PLACES=348, PETRI_TRANSITIONS=458} [2024-06-27 17:51:49,528 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 306 predicate places. [2024-06-27 17:51:49,528 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 458 transitions, 8838 flow [2024-06-27 17:51:49,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:49,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:49,528 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 17:51:49,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 17:51:49,528 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:49,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1209894962, now seen corresponding path program 7 times [2024-06-27 17:51:49,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:49,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327590778] [2024-06-27 17:51:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:49,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:50,896 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 17:51:50,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:50,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327590778] [2024-06-27 17:51:50,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327590778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:50,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:50,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:50,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191237392] [2024-06-27 17:51:50,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:50,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:50,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:50,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:50,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:50,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:50,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 458 transitions, 8838 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:50,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:50,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:50,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:52,524 INFO L124 PetriNetUnfolderBase]: 2570/4420 cut-off events. [2024-06-27 17:51:52,524 INFO L125 PetriNetUnfolderBase]: For 170988/170988 co-relation queries the response was YES. [2024-06-27 17:51:52,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34366 conditions, 4420 events. 2570/4420 cut-off events. For 170988/170988 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28218 event pairs, 233 based on Foata normal form. 2/4340 useless extension candidates. Maximal degree in co-relation 34199. Up to 2611 conditions per place. [2024-06-27 17:51:52,589 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 323 selfloop transitions, 187 changer transitions 0/516 dead transitions. [2024-06-27 17:51:52,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 516 transitions, 10671 flow [2024-06-27 17:51:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:51:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:51:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 17:51:52,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 17:51:52,590 INFO L175 Difference]: Start difference. First operand has 348 places, 458 transitions, 8838 flow. Second operand 10 states and 187 transitions. [2024-06-27 17:51:52,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 516 transitions, 10671 flow [2024-06-27 17:51:53,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 516 transitions, 10421 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 17:51:53,784 INFO L231 Difference]: Finished difference. Result has 352 places, 463 transitions, 9152 flow [2024-06-27 17:51:53,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8588, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9152, PETRI_PLACES=352, PETRI_TRANSITIONS=463} [2024-06-27 17:51:53,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-27 17:51:53,785 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 463 transitions, 9152 flow [2024-06-27 17:51:53,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:53,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:53,785 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 17:51:53,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 17:51:53,786 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:53,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1848313744, now seen corresponding path program 8 times [2024-06-27 17:51:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:53,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103189381] [2024-06-27 17:51:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:53,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:55,058 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 17:51:55,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:55,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103189381] [2024-06-27 17:51:55,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103189381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:55,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:55,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:51:55,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95360200] [2024-06-27 17:51:55,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:55,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:51:55,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:51:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:51:55,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:55,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 463 transitions, 9152 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:55,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:55,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:55,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:51:56,742 INFO L124 PetriNetUnfolderBase]: 2632/4546 cut-off events. [2024-06-27 17:51:56,742 INFO L125 PetriNetUnfolderBase]: For 188803/188803 co-relation queries the response was YES. [2024-06-27 17:51:56,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36227 conditions, 4546 events. 2632/4546 cut-off events. For 188803/188803 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 29310 event pairs, 292 based on Foata normal form. 2/4456 useless extension candidates. Maximal degree in co-relation 36058. Up to 2693 conditions per place. [2024-06-27 17:51:56,810 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 363 selfloop transitions, 152 changer transitions 0/521 dead transitions. [2024-06-27 17:51:56,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 521 transitions, 11007 flow [2024-06-27 17:51:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:51:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:51:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 17:51:56,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-27 17:51:56,811 INFO L175 Difference]: Start difference. First operand has 352 places, 463 transitions, 9152 flow. Second operand 10 states and 188 transitions. [2024-06-27 17:51:56,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 521 transitions, 11007 flow [2024-06-27 17:51:57,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 521 transitions, 10695 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 17:51:57,903 INFO L231 Difference]: Finished difference. Result has 357 places, 468 transitions, 9345 flow [2024-06-27 17:51:57,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8840, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9345, PETRI_PLACES=357, PETRI_TRANSITIONS=468} [2024-06-27 17:51:57,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 315 predicate places. [2024-06-27 17:51:57,904 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 468 transitions, 9345 flow [2024-06-27 17:51:57,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:51:57,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:51:57,904 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 17:51:57,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 17:51:57,904 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:51:57,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:51:57,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1173018540, now seen corresponding path program 9 times [2024-06-27 17:51:57,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:51:57,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518735625] [2024-06-27 17:51:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:51:57,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:51:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:51:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:51:58,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:51:58,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518735625] [2024-06-27 17:51:58,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518735625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:51:58,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:51:58,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:51:58,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498280898] [2024-06-27 17:51:58,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:51:58,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:51:58,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:51:58,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:51:58,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:51:59,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:51:59,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 468 transitions, 9345 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:51:59,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:51:59,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:51:59,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:00,445 INFO L124 PetriNetUnfolderBase]: 2658/4580 cut-off events. [2024-06-27 17:52:00,445 INFO L125 PetriNetUnfolderBase]: For 190554/190554 co-relation queries the response was YES. [2024-06-27 17:52:00,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36968 conditions, 4580 events. 2658/4580 cut-off events. For 190554/190554 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29516 event pairs, 237 based on Foata normal form. 2/4492 useless extension candidates. Maximal degree in co-relation 36796. Up to 2831 conditions per place. [2024-06-27 17:52:00,511 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 330 selfloop transitions, 185 changer transitions 0/521 dead transitions. [2024-06-27 17:52:00,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 521 transitions, 10913 flow [2024-06-27 17:52:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:52:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:52:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 17:52:00,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 17:52:00,513 INFO L175 Difference]: Start difference. First operand has 357 places, 468 transitions, 9345 flow. Second operand 10 states and 184 transitions. [2024-06-27 17:52:00,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 521 transitions, 10913 flow [2024-06-27 17:52:01,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 521 transitions, 10661 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 17:52:01,698 INFO L231 Difference]: Finished difference. Result has 361 places, 471 transitions, 9583 flow [2024-06-27 17:52:01,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9093, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9583, PETRI_PLACES=361, PETRI_TRANSITIONS=471} [2024-06-27 17:52:01,699 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-06-27 17:52:01,699 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 471 transitions, 9583 flow [2024-06-27 17:52:01,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:52:01,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:01,700 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 17:52:01,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 17:52:01,700 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:01,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:01,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1848305374, now seen corresponding path program 10 times [2024-06-27 17:52:01,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:01,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647488493] [2024-06-27 17:52:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:01,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:02,816 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 17:52:02,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:02,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647488493] [2024-06-27 17:52:02,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647488493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:02,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:02,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:02,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238988774] [2024-06-27 17:52:02,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:02,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:02,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:02,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:02,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:02,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:02,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 471 transitions, 9583 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:02,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:02,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:02,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:04,504 INFO L124 PetriNetUnfolderBase]: 2684/4644 cut-off events. [2024-06-27 17:52:04,504 INFO L125 PetriNetUnfolderBase]: For 194845/194845 co-relation queries the response was YES. [2024-06-27 17:52:04,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37903 conditions, 4644 events. 2684/4644 cut-off events. For 194845/194845 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30109 event pairs, 294 based on Foata normal form. 2/4548 useless extension candidates. Maximal degree in co-relation 37729. Up to 2871 conditions per place. [2024-06-27 17:52:04,573 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 368 selfloop transitions, 150 changer transitions 0/524 dead transitions. [2024-06-27 17:52:04,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 524 transitions, 11167 flow [2024-06-27 17:52:04,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:52:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:52:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 17:52:04,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 17:52:04,574 INFO L175 Difference]: Start difference. First operand has 361 places, 471 transitions, 9583 flow. Second operand 10 states and 185 transitions. [2024-06-27 17:52:04,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 524 transitions, 11167 flow [2024-06-27 17:52:05,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 524 transitions, 10707 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-27 17:52:05,678 INFO L231 Difference]: Finished difference. Result has 363 places, 474 transitions, 9545 flow [2024-06-27 17:52:05,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9123, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9545, PETRI_PLACES=363, PETRI_TRANSITIONS=474} [2024-06-27 17:52:05,678 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-06-27 17:52:05,678 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 474 transitions, 9545 flow [2024-06-27 17:52:05,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:05,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:05,679 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 17:52:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 17:52:05,679 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:05,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1172787900, now seen corresponding path program 11 times [2024-06-27 17:52:05,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:05,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959877135] [2024-06-27 17:52:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:05,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:06,799 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 17:52:06,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:06,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959877135] [2024-06-27 17:52:06,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959877135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:06,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:06,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:52:06,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125864641] [2024-06-27 17:52:06,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:06,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:52:06,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:06,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:52:06,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:52:06,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:06,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 474 transitions, 9545 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:52:06,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:06,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:06,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:08,417 INFO L124 PetriNetUnfolderBase]: 2732/4756 cut-off events. [2024-06-27 17:52:08,418 INFO L125 PetriNetUnfolderBase]: For 201762/201762 co-relation queries the response was YES. [2024-06-27 17:52:08,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38319 conditions, 4756 events. 2732/4756 cut-off events. For 201762/201762 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 31235 event pairs, 288 based on Foata normal form. 4/4650 useless extension candidates. Maximal degree in co-relation 38144. Up to 2046 conditions per place. [2024-06-27 17:52:08,490 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 328 selfloop transitions, 200 changer transitions 0/534 dead transitions. [2024-06-27 17:52:08,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 534 transitions, 11523 flow [2024-06-27 17:52:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:52:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:52:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 17:52:08,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-27 17:52:08,491 INFO L175 Difference]: Start difference. First operand has 363 places, 474 transitions, 9545 flow. Second operand 10 states and 189 transitions. [2024-06-27 17:52:08,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 534 transitions, 11523 flow [2024-06-27 17:52:09,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 534 transitions, 11103 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-27 17:52:09,584 INFO L231 Difference]: Finished difference. Result has 366 places, 483 transitions, 9817 flow [2024-06-27 17:52:09,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9139, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9817, PETRI_PLACES=366, PETRI_TRANSITIONS=483} [2024-06-27 17:52:09,585 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-27 17:52:09,585 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 483 transitions, 9817 flow [2024-06-27 17:52:09,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:52:09,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:09,585 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 17:52:09,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 17:52:09,585 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:09,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:09,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1848074734, now seen corresponding path program 12 times [2024-06-27 17:52:09,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:09,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143579752] [2024-06-27 17:52:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:09,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:10,730 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 17:52:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:10,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143579752] [2024-06-27 17:52:10,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143579752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:10,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:10,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:52:10,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707501439] [2024-06-27 17:52:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:10,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:52:10,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:52:10,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:52:10,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:10,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 483 transitions, 9817 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:52:10,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:10,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:10,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:12,418 INFO L124 PetriNetUnfolderBase]: 2784/4872 cut-off events. [2024-06-27 17:52:12,418 INFO L125 PetriNetUnfolderBase]: For 211024/211024 co-relation queries the response was YES. [2024-06-27 17:52:12,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39477 conditions, 4872 events. 2784/4872 cut-off events. For 211024/211024 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 32311 event pairs, 414 based on Foata normal form. 4/4754 useless extension candidates. Maximal degree in co-relation 39300. Up to 2195 conditions per place. [2024-06-27 17:52:12,488 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 368 selfloop transitions, 167 changer transitions 0/541 dead transitions. [2024-06-27 17:52:12,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 541 transitions, 11771 flow [2024-06-27 17:52:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:52:12,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:52:12,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 17:52:12,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-27 17:52:12,489 INFO L175 Difference]: Start difference. First operand has 366 places, 483 transitions, 9817 flow. Second operand 10 states and 193 transitions. [2024-06-27 17:52:12,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 541 transitions, 11771 flow [2024-06-27 17:52:13,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 541 transitions, 11510 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 17:52:13,820 INFO L231 Difference]: Finished difference. Result has 371 places, 487 transitions, 10038 flow [2024-06-27 17:52:13,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9558, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10038, PETRI_PLACES=371, PETRI_TRANSITIONS=487} [2024-06-27 17:52:13,821 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 329 predicate places. [2024-06-27 17:52:13,821 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 487 transitions, 10038 flow [2024-06-27 17:52:13,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 17:52:13,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:13,822 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 17:52:13,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 17:52:13,822 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:13,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1181369692, now seen corresponding path program 2 times [2024-06-27 17:52:13,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:13,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882845989] [2024-06-27 17:52:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:52:14,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:14,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882845989] [2024-06-27 17:52:14,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882845989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:14,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:14,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:14,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427172622] [2024-06-27 17:52:14,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:14,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:14,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:14,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:14,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:14,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 487 transitions, 10038 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:14,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:14,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:14,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:16,291 INFO L124 PetriNetUnfolderBase]: 2822/4934 cut-off events. [2024-06-27 17:52:16,291 INFO L125 PetriNetUnfolderBase]: For 218343/218343 co-relation queries the response was YES. [2024-06-27 17:52:16,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40513 conditions, 4934 events. 2822/4934 cut-off events. For 218343/218343 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 32592 event pairs, 505 based on Foata normal form. 4/4819 useless extension candidates. Maximal degree in co-relation 40334. Up to 3906 conditions per place. [2024-06-27 17:52:16,363 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 408 selfloop transitions, 123 changer transitions 0/537 dead transitions. [2024-06-27 17:52:16,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 537 transitions, 11420 flow [2024-06-27 17:52:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:52:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:52:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 17:52:16,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4569377990430622 [2024-06-27 17:52:16,365 INFO L175 Difference]: Start difference. First operand has 371 places, 487 transitions, 10038 flow. Second operand 11 states and 191 transitions. [2024-06-27 17:52:16,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 537 transitions, 11420 flow [2024-06-27 17:52:17,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 537 transitions, 11116 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-27 17:52:17,711 INFO L231 Difference]: Finished difference. Result has 375 places, 489 transitions, 10077 flow [2024-06-27 17:52:17,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9734, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10077, PETRI_PLACES=375, PETRI_TRANSITIONS=489} [2024-06-27 17:52:17,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2024-06-27 17:52:17,712 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 489 transitions, 10077 flow [2024-06-27 17:52:17,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:17,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:17,712 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 17:52:17,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 17:52:17,712 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:17,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1841638700, now seen corresponding path program 9 times [2024-06-27 17:52:17,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:17,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51981373] [2024-06-27 17:52:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:17,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:18,720 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 17:52:18,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:18,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51981373] [2024-06-27 17:52:18,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51981373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:18,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:18,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:18,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88929905] [2024-06-27 17:52:18,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:18,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:18,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:18,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:18,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 489 transitions, 10077 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:18,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:18,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:18,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:20,367 INFO L124 PetriNetUnfolderBase]: 2835/4955 cut-off events. [2024-06-27 17:52:20,368 INFO L125 PetriNetUnfolderBase]: For 215168/215168 co-relation queries the response was YES. [2024-06-27 17:52:20,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40403 conditions, 4955 events. 2835/4955 cut-off events. For 215168/215168 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32659 event pairs, 357 based on Foata normal form. 2/4837 useless extension candidates. Maximal degree in co-relation 40223. Up to 3704 conditions per place. [2024-06-27 17:52:20,431 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 402 selfloop transitions, 115 changer transitions 0/523 dead transitions. [2024-06-27 17:52:20,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 523 transitions, 11300 flow [2024-06-27 17:52:20,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:52:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:52:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 17:52:20,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 17:52:20,432 INFO L175 Difference]: Start difference. First operand has 375 places, 489 transitions, 10077 flow. Second operand 9 states and 152 transitions. [2024-06-27 17:52:20,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 523 transitions, 11300 flow [2024-06-27 17:52:21,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 523 transitions, 10975 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-27 17:52:21,777 INFO L231 Difference]: Finished difference. Result has 375 places, 490 transitions, 10017 flow [2024-06-27 17:52:21,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9752, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10017, PETRI_PLACES=375, PETRI_TRANSITIONS=490} [2024-06-27 17:52:21,778 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2024-06-27 17:52:21,778 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 490 transitions, 10017 flow [2024-06-27 17:52:21,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:21,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:21,778 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 17:52:21,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 17:52:21,778 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:21,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:21,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1841634050, now seen corresponding path program 10 times [2024-06-27 17:52:21,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:21,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358727871] [2024-06-27 17:52:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:21,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:22,764 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 17:52:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:22,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358727871] [2024-06-27 17:52:22,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358727871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:22,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:22,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:22,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934506687] [2024-06-27 17:52:22,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:22,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:22,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 490 transitions, 10017 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:22,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:22,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:22,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:24,514 INFO L124 PetriNetUnfolderBase]: 2833/4953 cut-off events. [2024-06-27 17:52:24,514 INFO L125 PetriNetUnfolderBase]: For 207655/207655 co-relation queries the response was YES. [2024-06-27 17:52:24,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39985 conditions, 4953 events. 2833/4953 cut-off events. For 207655/207655 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32628 event pairs, 357 based on Foata normal form. 2/4835 useless extension candidates. Maximal degree in co-relation 39804. Up to 3625 conditions per place. [2024-06-27 17:52:24,582 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 400 selfloop transitions, 118 changer transitions 0/524 dead transitions. [2024-06-27 17:52:24,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 524 transitions, 11244 flow [2024-06-27 17:52:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:52:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:52:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 17:52:24,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 17:52:24,583 INFO L175 Difference]: Start difference. First operand has 375 places, 490 transitions, 10017 flow. Second operand 9 states and 152 transitions. [2024-06-27 17:52:24,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 524 transitions, 11244 flow [2024-06-27 17:52:26,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 524 transitions, 10990 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 17:52:26,058 INFO L231 Difference]: Finished difference. Result has 377 places, 491 transitions, 10036 flow [2024-06-27 17:52:26,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9763, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10036, PETRI_PLACES=377, PETRI_TRANSITIONS=491} [2024-06-27 17:52:26,058 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-27 17:52:26,058 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 491 transitions, 10036 flow [2024-06-27 17:52:26,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:26,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:26,059 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 17:52:26,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 17:52:26,059 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:26,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash -427763608, now seen corresponding path program 13 times [2024-06-27 17:52:26,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:26,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91035957] [2024-06-27 17:52:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:26,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:27,102 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 17:52:27,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91035957] [2024-06-27 17:52:27,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91035957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:27,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:27,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440749568] [2024-06-27 17:52:27,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:27,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:27,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:27,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:27,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:27,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:27,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 491 transitions, 10036 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:27,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:27,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:27,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:28,942 INFO L124 PetriNetUnfolderBase]: 2835/4933 cut-off events. [2024-06-27 17:52:28,942 INFO L125 PetriNetUnfolderBase]: For 201484/201484 co-relation queries the response was YES. [2024-06-27 17:52:28,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39777 conditions, 4933 events. 2835/4933 cut-off events. For 201484/201484 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32396 event pairs, 308 based on Foata normal form. 2/4823 useless extension candidates. Maximal degree in co-relation 39595. Up to 3118 conditions per place. [2024-06-27 17:52:29,018 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 380 selfloop transitions, 154 changer transitions 0/540 dead transitions. [2024-06-27 17:52:29,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 540 transitions, 11623 flow [2024-06-27 17:52:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:52:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:52:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 17:52:29,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 17:52:29,019 INFO L175 Difference]: Start difference. First operand has 377 places, 491 transitions, 10036 flow. Second operand 10 states and 181 transitions. [2024-06-27 17:52:29,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 540 transitions, 11623 flow [2024-06-27 17:52:30,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 540 transitions, 11333 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 17:52:30,472 INFO L231 Difference]: Finished difference. Result has 380 places, 494 transitions, 10191 flow [2024-06-27 17:52:30,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9760, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10191, PETRI_PLACES=380, PETRI_TRANSITIONS=494} [2024-06-27 17:52:30,473 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-27 17:52:30,473 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 494 transitions, 10191 flow [2024-06-27 17:52:30,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:30,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:30,473 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 17:52:30,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 17:52:30,474 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:30,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:30,474 INFO L85 PathProgramCache]: Analyzing trace with hash -191280666, now seen corresponding path program 3 times [2024-06-27 17:52:30,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:30,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092704353] [2024-06-27 17:52:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:30,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:31,333 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 17:52:31,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:31,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092704353] [2024-06-27 17:52:31,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092704353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:31,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:31,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:31,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625868414] [2024-06-27 17:52:31,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:31,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:31,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:31,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:31,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:31,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 494 transitions, 10191 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:31,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:31,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:31,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:33,067 INFO L124 PetriNetUnfolderBase]: 2873/5055 cut-off events. [2024-06-27 17:52:33,067 INFO L125 PetriNetUnfolderBase]: For 218510/218510 co-relation queries the response was YES. [2024-06-27 17:52:33,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40489 conditions, 5055 events. 2873/5055 cut-off events. For 218510/218510 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 33726 event pairs, 555 based on Foata normal form. 4/4930 useless extension candidates. Maximal degree in co-relation 40306. Up to 3997 conditions per place. [2024-06-27 17:52:33,136 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 428 selfloop transitions, 110 changer transitions 0/544 dead transitions. [2024-06-27 17:52:33,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 544 transitions, 11593 flow [2024-06-27 17:52:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:52:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:52:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 17:52:33,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-06-27 17:52:33,137 INFO L175 Difference]: Start difference. First operand has 380 places, 494 transitions, 10191 flow. Second operand 11 states and 192 transitions. [2024-06-27 17:52:33,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 544 transitions, 11593 flow [2024-06-27 17:52:34,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 544 transitions, 11195 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-27 17:52:34,634 INFO L231 Difference]: Finished difference. Result has 383 places, 496 transitions, 10116 flow [2024-06-27 17:52:34,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9793, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10116, PETRI_PLACES=383, PETRI_TRANSITIONS=496} [2024-06-27 17:52:34,635 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 341 predicate places. [2024-06-27 17:52:34,635 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 496 transitions, 10116 flow [2024-06-27 17:52:34,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:34,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:34,635 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 17:52:34,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 17:52:34,635 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:34,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:34,636 INFO L85 PathProgramCache]: Analyzing trace with hash 46229786, now seen corresponding path program 14 times [2024-06-27 17:52:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:34,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851715770] [2024-06-27 17:52:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:34,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:35,854 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 17:52:35,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:35,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851715770] [2024-06-27 17:52:35,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851715770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:35,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:35,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90679794] [2024-06-27 17:52:35,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:35,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:35,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:35,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 496 transitions, 10116 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:35,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:35,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:35,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:37,751 INFO L124 PetriNetUnfolderBase]: 2915/4999 cut-off events. [2024-06-27 17:52:37,751 INFO L125 PetriNetUnfolderBase]: For 218116/218116 co-relation queries the response was YES. [2024-06-27 17:52:37,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40886 conditions, 4999 events. 2915/4999 cut-off events. For 218116/218116 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 32489 event pairs, 201 based on Foata normal form. 2/4911 useless extension candidates. Maximal degree in co-relation 40702. Up to 3180 conditions per place. [2024-06-27 17:52:37,821 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 336 selfloop transitions, 210 changer transitions 0/552 dead transitions. [2024-06-27 17:52:37,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 552 transitions, 12067 flow [2024-06-27 17:52:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:52:37,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:52:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 17:52:37,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 17:52:37,822 INFO L175 Difference]: Start difference. First operand has 383 places, 496 transitions, 10116 flow. Second operand 10 states and 184 transitions. [2024-06-27 17:52:37,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 552 transitions, 12067 flow [2024-06-27 17:52:39,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 552 transitions, 11740 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-27 17:52:39,238 INFO L231 Difference]: Finished difference. Result has 385 places, 501 transitions, 10424 flow [2024-06-27 17:52:39,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9789, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10424, PETRI_PLACES=385, PETRI_TRANSITIONS=501} [2024-06-27 17:52:39,239 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 343 predicate places. [2024-06-27 17:52:39,239 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 501 transitions, 10424 flow [2024-06-27 17:52:39,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:39,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:39,239 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 17:52:39,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 17:52:39,240 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:39,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:39,240 INFO L85 PathProgramCache]: Analyzing trace with hash 388827588, now seen corresponding path program 4 times [2024-06-27 17:52:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:39,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965740999] [2024-06-27 17:52:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:40,169 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 17:52:40,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:40,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965740999] [2024-06-27 17:52:40,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965740999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:40,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:40,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:40,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144015845] [2024-06-27 17:52:40,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:40,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:40,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:40,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:40,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:40,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:40,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 501 transitions, 10424 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:40,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:40,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:40,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:41,891 INFO L124 PetriNetUnfolderBase]: 2953/5173 cut-off events. [2024-06-27 17:52:41,891 INFO L125 PetriNetUnfolderBase]: For 232925/232925 co-relation queries the response was YES. [2024-06-27 17:52:41,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41945 conditions, 5173 events. 2953/5173 cut-off events. For 232925/232925 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 34652 event pairs, 815 based on Foata normal form. 4/5053 useless extension candidates. Maximal degree in co-relation 41759. Up to 4527 conditions per place. [2024-06-27 17:52:41,959 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 506 selfloop transitions, 29 changer transitions 0/541 dead transitions. [2024-06-27 17:52:41,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 541 transitions, 11789 flow [2024-06-27 17:52:41,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:52:41,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:52:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 17:52:41,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-27 17:52:41,960 INFO L175 Difference]: Start difference. First operand has 385 places, 501 transitions, 10424 flow. Second operand 10 states and 167 transitions. [2024-06-27 17:52:41,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 541 transitions, 11789 flow [2024-06-27 17:52:43,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 541 transitions, 11411 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 17:52:43,306 INFO L231 Difference]: Finished difference. Result has 389 places, 503 transitions, 10214 flow [2024-06-27 17:52:43,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10046, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10214, PETRI_PLACES=389, PETRI_TRANSITIONS=503} [2024-06-27 17:52:43,307 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-06-27 17:52:43,307 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 503 transitions, 10214 flow [2024-06-27 17:52:43,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:43,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:43,307 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 17:52:43,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 17:52:43,307 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:43,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash 46221416, now seen corresponding path program 15 times [2024-06-27 17:52:43,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:43,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397420729] [2024-06-27 17:52:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:43,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:44,431 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 17:52:44,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:44,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397420729] [2024-06-27 17:52:44,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397420729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:44,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:44,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:44,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180948665] [2024-06-27 17:52:44,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:44,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:44,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:44,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:44,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:44,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 503 transitions, 10214 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:44,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:44,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:44,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:46,128 INFO L124 PetriNetUnfolderBase]: 2955/5081 cut-off events. [2024-06-27 17:52:46,128 INFO L125 PetriNetUnfolderBase]: For 212741/212741 co-relation queries the response was YES. [2024-06-27 17:52:46,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41174 conditions, 5081 events. 2955/5081 cut-off events. For 212741/212741 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 33295 event pairs, 217 based on Foata normal form. 2/4989 useless extension candidates. Maximal degree in co-relation 40986. Up to 3320 conditions per place. [2024-06-27 17:52:46,196 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 338 selfloop transitions, 208 changer transitions 0/552 dead transitions. [2024-06-27 17:52:46,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 552 transitions, 11779 flow [2024-06-27 17:52:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:52:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:52:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 17:52:46,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 17:52:46,197 INFO L175 Difference]: Start difference. First operand has 389 places, 503 transitions, 10214 flow. Second operand 10 states and 179 transitions. [2024-06-27 17:52:46,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 552 transitions, 11779 flow [2024-06-27 17:52:47,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 552 transitions, 11609 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-27 17:52:47,672 INFO L231 Difference]: Finished difference. Result has 391 places, 506 transitions, 10599 flow [2024-06-27 17:52:47,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10058, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10599, PETRI_PLACES=391, PETRI_TRANSITIONS=506} [2024-06-27 17:52:47,673 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-27 17:52:47,673 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 506 transitions, 10599 flow [2024-06-27 17:52:47,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:47,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:47,673 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 17:52:47,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 17:52:47,673 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:47,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:47,673 INFO L85 PathProgramCache]: Analyzing trace with hash 46528998, now seen corresponding path program 5 times [2024-06-27 17:52:47,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:47,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786022526] [2024-06-27 17:52:47,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:47,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:48,524 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 17:52:48,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:48,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786022526] [2024-06-27 17:52:48,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786022526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:48,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:48,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037713430] [2024-06-27 17:52:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:48,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:48,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:48,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:48,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:48,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:48,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 506 transitions, 10599 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:48,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:48,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:48,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:50,330 INFO L124 PetriNetUnfolderBase]: 2978/5220 cut-off events. [2024-06-27 17:52:50,331 INFO L125 PetriNetUnfolderBase]: For 222443/222443 co-relation queries the response was YES. [2024-06-27 17:52:50,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42127 conditions, 5220 events. 2978/5220 cut-off events. For 222443/222443 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 34944 event pairs, 535 based on Foata normal form. 4/5099 useless extension candidates. Maximal degree in co-relation 41938. Up to 4174 conditions per place. [2024-06-27 17:52:50,396 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 415 selfloop transitions, 134 changer transitions 0/555 dead transitions. [2024-06-27 17:52:50,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 555 transitions, 12031 flow [2024-06-27 17:52:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:52:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:52:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 17:52:50,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 17:52:50,397 INFO L175 Difference]: Start difference. First operand has 391 places, 506 transitions, 10599 flow. Second operand 11 states and 188 transitions. [2024-06-27 17:52:50,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 555 transitions, 12031 flow [2024-06-27 17:52:51,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 555 transitions, 11523 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 17:52:51,898 INFO L231 Difference]: Finished difference. Result has 394 places, 508 transitions, 10472 flow [2024-06-27 17:52:51,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10091, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10472, PETRI_PLACES=394, PETRI_TRANSITIONS=508} [2024-06-27 17:52:51,899 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 352 predicate places. [2024-06-27 17:52:51,899 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 508 transitions, 10472 flow [2024-06-27 17:52:51,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 17:52:51,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:51,899 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 17:52:51,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 17:52:51,900 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:51,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash -649736917, now seen corresponding path program 1 times [2024-06-27 17:52:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:51,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555388349] [2024-06-27 17:52:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:51,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:52,884 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 17:52:52,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:52,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555388349] [2024-06-27 17:52:52,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555388349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:52,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:52,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:52,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832444449] [2024-06-27 17:52:52,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:52,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:52,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:52,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:52,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:52,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:52,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 508 transitions, 10472 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:52:52,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:52,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:52,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:54,755 INFO L124 PetriNetUnfolderBase]: 2997/5294 cut-off events. [2024-06-27 17:52:54,755 INFO L125 PetriNetUnfolderBase]: For 218124/218124 co-relation queries the response was YES. [2024-06-27 17:52:54,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41903 conditions, 5294 events. 2997/5294 cut-off events. For 218124/218124 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 35772 event pairs, 759 based on Foata normal form. 2/5157 useless extension candidates. Maximal degree in co-relation 41713. Up to 4459 conditions per place. [2024-06-27 17:52:54,828 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 463 selfloop transitions, 82 changer transitions 0/551 dead transitions. [2024-06-27 17:52:54,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 551 transitions, 11898 flow [2024-06-27 17:52:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:52:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:52:54,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 17:52:54,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 17:52:54,829 INFO L175 Difference]: Start difference. First operand has 394 places, 508 transitions, 10472 flow. Second operand 10 states and 171 transitions. [2024-06-27 17:52:54,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 551 transitions, 11898 flow [2024-06-27 17:52:56,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 551 transitions, 11543 flow, removed 75 selfloop flow, removed 8 redundant places. [2024-06-27 17:52:56,152 INFO L231 Difference]: Finished difference. Result has 396 places, 509 transitions, 10301 flow [2024-06-27 17:52:56,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10117, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10301, PETRI_PLACES=396, PETRI_TRANSITIONS=509} [2024-06-27 17:52:56,152 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 354 predicate places. [2024-06-27 17:52:56,152 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 509 transitions, 10301 flow [2024-06-27 17:52:56,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:52:56,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:52:56,152 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 17:52:56,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 17:52:56,153 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:52:56,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:52:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2110849153, now seen corresponding path program 2 times [2024-06-27 17:52:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:52:56,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832944276] [2024-06-27 17:52:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:52:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:52:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:52:57,193 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 17:52:57,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:52:57,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832944276] [2024-06-27 17:52:57,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832944276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:52:57,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:52:57,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:52:57,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207676641] [2024-06-27 17:52:57,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:52:57,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:52:57,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:52:57,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:52:57,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:52:57,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:52:57,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 509 transitions, 10301 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:52:57,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:52:57,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:52:57,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:52:59,080 INFO L124 PetriNetUnfolderBase]: 3019/5336 cut-off events. [2024-06-27 17:52:59,080 INFO L125 PetriNetUnfolderBase]: For 219560/219560 co-relation queries the response was YES. [2024-06-27 17:52:59,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41829 conditions, 5336 events. 3019/5336 cut-off events. For 219560/219560 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 36143 event pairs, 759 based on Foata normal form. 2/5197 useless extension candidates. Maximal degree in co-relation 41638. Up to 4424 conditions per place. [2024-06-27 17:52:59,162 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 451 selfloop transitions, 101 changer transitions 0/558 dead transitions. [2024-06-27 17:52:59,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 558 transitions, 11938 flow [2024-06-27 17:52:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:52:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:52:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 17:52:59,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354066985645933 [2024-06-27 17:52:59,163 INFO L175 Difference]: Start difference. First operand has 396 places, 509 transitions, 10301 flow. Second operand 11 states and 182 transitions. [2024-06-27 17:52:59,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 558 transitions, 11938 flow [2024-06-27 17:53:00,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 558 transitions, 11756 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 17:53:00,647 INFO L231 Difference]: Finished difference. Result has 401 places, 519 transitions, 10740 flow [2024-06-27 17:53:00,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10131, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10740, PETRI_PLACES=401, PETRI_TRANSITIONS=519} [2024-06-27 17:53:00,648 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 359 predicate places. [2024-06-27 17:53:00,648 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 519 transitions, 10740 flow [2024-06-27 17:53:00,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:00,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:00,648 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 17:53:00,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 17:53:00,648 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:00,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2110705003, now seen corresponding path program 3 times [2024-06-27 17:53:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:00,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505682949] [2024-06-27 17:53:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:00,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:01,715 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 17:53:01,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:01,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505682949] [2024-06-27 17:53:01,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505682949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:01,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:01,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:53:01,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947348531] [2024-06-27 17:53:01,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:01,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:53:01,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:01,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:53:01,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:53:01,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:01,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 519 transitions, 10740 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:01,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:01,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:01,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:03,453 INFO L124 PetriNetUnfolderBase]: 3037/5369 cut-off events. [2024-06-27 17:53:03,453 INFO L125 PetriNetUnfolderBase]: For 227289/227289 co-relation queries the response was YES. [2024-06-27 17:53:03,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42323 conditions, 5369 events. 3037/5369 cut-off events. For 227289/227289 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 36453 event pairs, 753 based on Foata normal form. 2/5230 useless extension candidates. Maximal degree in co-relation 42129. Up to 4278 conditions per place. [2024-06-27 17:53:03,539 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 459 selfloop transitions, 98 changer transitions 0/563 dead transitions. [2024-06-27 17:53:03,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 563 transitions, 12192 flow [2024-06-27 17:53:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:53:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:53:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 17:53:03,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 17:53:03,540 INFO L175 Difference]: Start difference. First operand has 401 places, 519 transitions, 10740 flow. Second operand 11 states and 183 transitions. [2024-06-27 17:53:03,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 563 transitions, 12192 flow [2024-06-27 17:53:05,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 563 transitions, 11881 flow, removed 126 selfloop flow, removed 4 redundant places. [2024-06-27 17:53:05,446 INFO L231 Difference]: Finished difference. Result has 410 places, 524 transitions, 10856 flow [2024-06-27 17:53:05,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10429, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10856, PETRI_PLACES=410, PETRI_TRANSITIONS=524} [2024-06-27 17:53:05,446 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-06-27 17:53:05,447 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 524 transitions, 10856 flow [2024-06-27 17:53:05,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:05,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:05,447 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 17:53:05,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 17:53:05,447 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:05,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1704724501, now seen corresponding path program 4 times [2024-06-27 17:53:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:05,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529062124] [2024-06-27 17:53:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:06,419 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 17:53:06,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529062124] [2024-06-27 17:53:06,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529062124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:06,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:06,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:53:06,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326757505] [2024-06-27 17:53:06,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:06,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:53:06,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:06,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:53:06,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:53:06,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:06,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 524 transitions, 10856 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:06,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:06,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:06,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:08,115 INFO L124 PetriNetUnfolderBase]: 3057/5416 cut-off events. [2024-06-27 17:53:08,115 INFO L125 PetriNetUnfolderBase]: For 227459/227459 co-relation queries the response was YES. [2024-06-27 17:53:08,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42676 conditions, 5416 events. 3057/5416 cut-off events. For 227459/227459 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 36772 event pairs, 744 based on Foata normal form. 2/5274 useless extension candidates. Maximal degree in co-relation 42478. Up to 4642 conditions per place. [2024-06-27 17:53:08,205 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 494 selfloop transitions, 65 changer transitions 0/565 dead transitions. [2024-06-27 17:53:08,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 565 transitions, 12235 flow [2024-06-27 17:53:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:53:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:53:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 17:53:08,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-27 17:53:08,206 INFO L175 Difference]: Start difference. First operand has 410 places, 524 transitions, 10856 flow. Second operand 10 states and 166 transitions. [2024-06-27 17:53:08,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 565 transitions, 12235 flow [2024-06-27 17:53:09,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 565 transitions, 11924 flow, removed 75 selfloop flow, removed 8 redundant places. [2024-06-27 17:53:09,891 INFO L231 Difference]: Finished difference. Result has 413 places, 526 transitions, 10711 flow [2024-06-27 17:53:09,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10545, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10711, PETRI_PLACES=413, PETRI_TRANSITIONS=526} [2024-06-27 17:53:09,892 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 371 predicate places. [2024-06-27 17:53:09,892 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 526 transitions, 10711 flow [2024-06-27 17:53:09,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:09,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:09,893 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 17:53:09,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 17:53:09,893 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:09,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1907479441, now seen corresponding path program 1 times [2024-06-27 17:53:09,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:09,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298504733] [2024-06-27 17:53:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:11,277 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 17:53:11,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:11,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298504733] [2024-06-27 17:53:11,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298504733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:11,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:11,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:53:11,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976907400] [2024-06-27 17:53:11,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:11,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:53:11,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:11,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:53:11,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:53:11,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:11,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 526 transitions, 10711 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:11,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:11,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:11,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:13,015 INFO L124 PetriNetUnfolderBase]: 3083/5458 cut-off events. [2024-06-27 17:53:13,015 INFO L125 PetriNetUnfolderBase]: For 230217/230217 co-relation queries the response was YES. [2024-06-27 17:53:13,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42875 conditions, 5458 events. 3083/5458 cut-off events. For 230217/230217 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 37155 event pairs, 768 based on Foata normal form. 2/5315 useless extension candidates. Maximal degree in co-relation 42675. Up to 4569 conditions per place. [2024-06-27 17:53:13,103 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 481 selfloop transitions, 89 changer transitions 0/576 dead transitions. [2024-06-27 17:53:13,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 576 transitions, 12188 flow [2024-06-27 17:53:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:53:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:53:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 17:53:13,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-27 17:53:13,105 INFO L175 Difference]: Start difference. First operand has 413 places, 526 transitions, 10711 flow. Second operand 11 states and 189 transitions. [2024-06-27 17:53:13,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 576 transitions, 12188 flow [2024-06-27 17:53:14,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 576 transitions, 12053 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 17:53:14,686 INFO L231 Difference]: Finished difference. Result has 417 places, 529 transitions, 10896 flow [2024-06-27 17:53:14,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10576, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10896, PETRI_PLACES=417, PETRI_TRANSITIONS=529} [2024-06-27 17:53:14,686 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 375 predicate places. [2024-06-27 17:53:14,687 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 529 transitions, 10896 flow [2024-06-27 17:53:14,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:14,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:14,687 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 17:53:14,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 17:53:14,687 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:14,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1054102353, now seen corresponding path program 5 times [2024-06-27 17:53:14,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:14,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405881068] [2024-06-27 17:53:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:14,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:15,884 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 17:53:15,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:15,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405881068] [2024-06-27 17:53:15,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405881068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:15,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:15,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:53:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489618036] [2024-06-27 17:53:15,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:15,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:53:15,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:15,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:53:15,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:53:15,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:15,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 529 transitions, 10896 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:15,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:15,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:15,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:17,653 INFO L124 PetriNetUnfolderBase]: 3102/5520 cut-off events. [2024-06-27 17:53:17,654 INFO L125 PetriNetUnfolderBase]: For 237780/237780 co-relation queries the response was YES. [2024-06-27 17:53:17,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43433 conditions, 5520 events. 3102/5520 cut-off events. For 237780/237780 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 37941 event pairs, 679 based on Foata normal form. 2/5366 useless extension candidates. Maximal degree in co-relation 43232. Up to 4136 conditions per place. [2024-06-27 17:53:17,744 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 447 selfloop transitions, 126 changer transitions 0/579 dead transitions. [2024-06-27 17:53:17,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 579 transitions, 12534 flow [2024-06-27 17:53:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:53:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:53:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 17:53:17,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 17:53:17,746 INFO L175 Difference]: Start difference. First operand has 417 places, 529 transitions, 10896 flow. Second operand 10 states and 180 transitions. [2024-06-27 17:53:17,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 579 transitions, 12534 flow [2024-06-27 17:53:19,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 579 transitions, 12244 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-27 17:53:19,376 INFO L231 Difference]: Finished difference. Result has 418 places, 530 transitions, 10886 flow [2024-06-27 17:53:19,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10606, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10886, PETRI_PLACES=418, PETRI_TRANSITIONS=530} [2024-06-27 17:53:19,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-27 17:53:19,377 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 530 transitions, 10886 flow [2024-06-27 17:53:19,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:19,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:19,378 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 17:53:19,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 17:53:19,378 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:19,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1054096773, now seen corresponding path program 6 times [2024-06-27 17:53:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104806673] [2024-06-27 17:53:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:20,618 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 17:53:20,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:20,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104806673] [2024-06-27 17:53:20,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104806673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:20,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:20,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:53:20,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283053148] [2024-06-27 17:53:20,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:20,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:53:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:20,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:53:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:53:20,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:20,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 530 transitions, 10886 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:20,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:20,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:20,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:22,472 INFO L124 PetriNetUnfolderBase]: 3121/5559 cut-off events. [2024-06-27 17:53:22,472 INFO L125 PetriNetUnfolderBase]: For 243081/243081 co-relation queries the response was YES. [2024-06-27 17:53:22,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43729 conditions, 5559 events. 3121/5559 cut-off events. For 243081/243081 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 38301 event pairs, 678 based on Foata normal form. 2/5403 useless extension candidates. Maximal degree in co-relation 43527. Up to 4122 conditions per place. [2024-06-27 17:53:22,562 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 449 selfloop transitions, 127 changer transitions 0/582 dead transitions. [2024-06-27 17:53:22,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 582 transitions, 12616 flow [2024-06-27 17:53:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:53:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:53:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 17:53:22,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 17:53:22,564 INFO L175 Difference]: Start difference. First operand has 418 places, 530 transitions, 10886 flow. Second operand 10 states and 183 transitions. [2024-06-27 17:53:22,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 582 transitions, 12616 flow [2024-06-27 17:53:24,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 582 transitions, 12354 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 17:53:24,122 INFO L231 Difference]: Finished difference. Result has 420 places, 531 transitions, 10908 flow [2024-06-27 17:53:24,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10624, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10908, PETRI_PLACES=420, PETRI_TRANSITIONS=531} [2024-06-27 17:53:24,122 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 378 predicate places. [2024-06-27 17:53:24,122 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 531 transitions, 10908 flow [2024-06-27 17:53:24,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:24,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:24,123 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 17:53:24,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 17:53:24,123 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:24,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:24,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2061194939, now seen corresponding path program 7 times [2024-06-27 17:53:24,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:24,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725287655] [2024-06-27 17:53:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:24,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:53:25,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:25,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725287655] [2024-06-27 17:53:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725287655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:25,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:53:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750340725] [2024-06-27 17:53:25,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:25,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:53:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:53:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:53:25,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:25,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 531 transitions, 10908 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:25,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:25,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:25,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:27,008 INFO L124 PetriNetUnfolderBase]: 3164/5642 cut-off events. [2024-06-27 17:53:27,008 INFO L125 PetriNetUnfolderBase]: For 260341/260341 co-relation queries the response was YES. [2024-06-27 17:53:27,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44671 conditions, 5642 events. 3164/5642 cut-off events. For 260341/260341 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 39098 event pairs, 685 based on Foata normal form. 2/5484 useless extension candidates. Maximal degree in co-relation 44468. Up to 3870 conditions per place. [2024-06-27 17:53:27,097 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 412 selfloop transitions, 165 changer transitions 0/583 dead transitions. [2024-06-27 17:53:27,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 583 transitions, 12933 flow [2024-06-27 17:53:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:53:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:53:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 17:53:27,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-06-27 17:53:27,098 INFO L175 Difference]: Start difference. First operand has 420 places, 531 transitions, 10908 flow. Second operand 10 states and 176 transitions. [2024-06-27 17:53:27,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 583 transitions, 12933 flow [2024-06-27 17:53:28,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 583 transitions, 12650 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 17:53:28,810 INFO L231 Difference]: Finished difference. Result has 424 places, 538 transitions, 11299 flow [2024-06-27 17:53:28,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10642, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11299, PETRI_PLACES=424, PETRI_TRANSITIONS=538} [2024-06-27 17:53:28,811 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-27 17:53:28,811 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 538 transitions, 11299 flow [2024-06-27 17:53:28,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:28,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:28,811 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 17:53:28,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 17:53:28,811 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:28,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:28,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2055473083, now seen corresponding path program 2 times [2024-06-27 17:53:28,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:28,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807606436] [2024-06-27 17:53:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:28,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:30,351 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 17:53:30,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:30,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807606436] [2024-06-27 17:53:30,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807606436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:30,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:30,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:53:30,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126945897] [2024-06-27 17:53:30,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:30,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:53:30,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:53:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:53:30,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:30,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 538 transitions, 11299 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:30,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:30,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:30,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:32,419 INFO L124 PetriNetUnfolderBase]: 3200/5704 cut-off events. [2024-06-27 17:53:32,419 INFO L125 PetriNetUnfolderBase]: For 275702/275702 co-relation queries the response was YES. [2024-06-27 17:53:32,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45665 conditions, 5704 events. 3200/5704 cut-off events. For 275702/275702 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 39565 event pairs, 693 based on Foata normal form. 2/5544 useless extension candidates. Maximal degree in co-relation 45459. Up to 4111 conditions per place. [2024-06-27 17:53:32,520 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 421 selfloop transitions, 168 changer transitions 0/595 dead transitions. [2024-06-27 17:53:32,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 595 transitions, 13254 flow [2024-06-27 17:53:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:53:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:53:32,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 17:53:32,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2024-06-27 17:53:32,522 INFO L175 Difference]: Start difference. First operand has 424 places, 538 transitions, 11299 flow. Second operand 11 states and 194 transitions. [2024-06-27 17:53:32,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 595 transitions, 13254 flow [2024-06-27 17:53:34,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 595 transitions, 12987 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-27 17:53:34,580 INFO L231 Difference]: Finished difference. Result has 432 places, 544 transitions, 11700 flow [2024-06-27 17:53:34,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11032, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11700, PETRI_PLACES=432, PETRI_TRANSITIONS=544} [2024-06-27 17:53:34,581 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-27 17:53:34,581 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 544 transitions, 11700 flow [2024-06-27 17:53:34,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:34,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:34,581 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 17:53:34,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 17:53:34,581 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:34,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:34,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1253404143, now seen corresponding path program 8 times [2024-06-27 17:53:34,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:34,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558058238] [2024-06-27 17:53:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:34,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:35,679 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 17:53:35,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:35,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558058238] [2024-06-27 17:53:35,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558058238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:35,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:35,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:53:35,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850398550] [2024-06-27 17:53:35,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:35,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:53:35,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:35,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:53:35,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:53:35,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:35,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 544 transitions, 11700 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:35,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:35,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:35,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:37,669 INFO L124 PetriNetUnfolderBase]: 3223/5763 cut-off events. [2024-06-27 17:53:37,670 INFO L125 PetriNetUnfolderBase]: For 286178/286178 co-relation queries the response was YES. [2024-06-27 17:53:37,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46462 conditions, 5763 events. 3223/5763 cut-off events. For 286178/286178 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 40219 event pairs, 688 based on Foata normal form. 2/5597 useless extension candidates. Maximal degree in co-relation 46253. Up to 4339 conditions per place. [2024-06-27 17:53:37,765 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 455 selfloop transitions, 136 changer transitions 0/597 dead transitions. [2024-06-27 17:53:37,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 597 transitions, 13504 flow [2024-06-27 17:53:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:53:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:53:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 17:53:37,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 17:53:37,766 INFO L175 Difference]: Start difference. First operand has 432 places, 544 transitions, 11700 flow. Second operand 10 states and 180 transitions. [2024-06-27 17:53:37,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 597 transitions, 13504 flow [2024-06-27 17:53:39,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 597 transitions, 12992 flow, removed 140 selfloop flow, removed 7 redundant places. [2024-06-27 17:53:39,902 INFO L231 Difference]: Finished difference. Result has 435 places, 546 transitions, 11518 flow [2024-06-27 17:53:39,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11188, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11518, PETRI_PLACES=435, PETRI_TRANSITIONS=546} [2024-06-27 17:53:39,902 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 393 predicate places. [2024-06-27 17:53:39,902 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 546 transitions, 11518 flow [2024-06-27 17:53:39,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:39,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:39,903 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 17:53:39,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 17:53:39,903 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:39,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:39,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1253398563, now seen corresponding path program 9 times [2024-06-27 17:53:39,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:39,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353599180] [2024-06-27 17:53:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:39,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:40,901 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 17:53:40,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:40,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353599180] [2024-06-27 17:53:40,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353599180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:40,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:40,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:53:40,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143921246] [2024-06-27 17:53:40,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:40,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:53:40,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:53:40,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:53:41,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:41,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 546 transitions, 11518 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:41,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:41,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:41,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:42,986 INFO L124 PetriNetUnfolderBase]: 3245/5795 cut-off events. [2024-06-27 17:53:42,986 INFO L125 PetriNetUnfolderBase]: For 285729/285729 co-relation queries the response was YES. [2024-06-27 17:53:43,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46747 conditions, 5795 events. 3245/5795 cut-off events. For 285729/285729 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40453 event pairs, 689 based on Foata normal form. 2/5631 useless extension candidates. Maximal degree in co-relation 46536. Up to 4315 conditions per place. [2024-06-27 17:53:43,080 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 454 selfloop transitions, 139 changer transitions 0/599 dead transitions. [2024-06-27 17:53:43,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 599 transitions, 13510 flow [2024-06-27 17:53:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:53:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:53:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 17:53:43,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 17:53:43,082 INFO L175 Difference]: Start difference. First operand has 435 places, 546 transitions, 11518 flow. Second operand 10 states and 180 transitions. [2024-06-27 17:53:43,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 599 transitions, 13510 flow [2024-06-27 17:53:45,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 599 transitions, 13209 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 17:53:45,128 INFO L231 Difference]: Finished difference. Result has 437 places, 550 transitions, 11700 flow [2024-06-27 17:53:45,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11217, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11700, PETRI_PLACES=437, PETRI_TRANSITIONS=550} [2024-06-27 17:53:45,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-27 17:53:45,129 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 550 transitions, 11700 flow [2024-06-27 17:53:45,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:45,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:45,129 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 17:53:45,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 17:53:45,129 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:45,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:45,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1260755793, now seen corresponding path program 10 times [2024-06-27 17:53:45,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:45,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969211258] [2024-06-27 17:53:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:45,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:46,082 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 17:53:46,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:46,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969211258] [2024-06-27 17:53:46,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969211258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:46,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:46,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:53:46,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427636132] [2024-06-27 17:53:46,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:46,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:53:46,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:53:46,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:53:46,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:46,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 550 transitions, 11700 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:46,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:46,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:46,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:48,083 INFO L124 PetriNetUnfolderBase]: 3246/5810 cut-off events. [2024-06-27 17:53:48,083 INFO L125 PetriNetUnfolderBase]: For 277697/277697 co-relation queries the response was YES. [2024-06-27 17:53:48,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46555 conditions, 5810 events. 3246/5810 cut-off events. For 277697/277697 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40641 event pairs, 690 based on Foata normal form. 2/5642 useless extension candidates. Maximal degree in co-relation 46343. Up to 4380 conditions per place. [2024-06-27 17:53:48,179 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 456 selfloop transitions, 139 changer transitions 0/601 dead transitions. [2024-06-27 17:53:48,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 601 transitions, 13407 flow [2024-06-27 17:53:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:53:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:53:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 17:53:48,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 17:53:48,180 INFO L175 Difference]: Start difference. First operand has 437 places, 550 transitions, 11700 flow. Second operand 10 states and 178 transitions. [2024-06-27 17:53:48,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 601 transitions, 13407 flow [2024-06-27 17:53:50,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 601 transitions, 12888 flow, removed 160 selfloop flow, removed 6 redundant places. [2024-06-27 17:53:50,379 INFO L231 Difference]: Finished difference. Result has 441 places, 551 transitions, 11562 flow [2024-06-27 17:53:50,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11247, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11562, PETRI_PLACES=441, PETRI_TRANSITIONS=551} [2024-06-27 17:53:50,380 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 399 predicate places. [2024-06-27 17:53:50,380 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 551 transitions, 11562 flow [2024-06-27 17:53:50,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:50,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:50,380 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 17:53:50,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 17:53:50,380 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:50,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash 782312309, now seen corresponding path program 3 times [2024-06-27 17:53:50,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:50,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386473349] [2024-06-27 17:53:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:50,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:51,845 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 17:53:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386473349] [2024-06-27 17:53:51,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386473349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:51,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:51,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:53:51,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786761257] [2024-06-27 17:53:51,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:51,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:53:51,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:51,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:53:51,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:53:51,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:51,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 551 transitions, 11562 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:51,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:51,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:51,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:53,931 INFO L124 PetriNetUnfolderBase]: 3272/5850 cut-off events. [2024-06-27 17:53:53,931 INFO L125 PetriNetUnfolderBase]: For 273690/273690 co-relation queries the response was YES. [2024-06-27 17:53:54,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46642 conditions, 5850 events. 3272/5850 cut-off events. For 273690/273690 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 40919 event pairs, 688 based on Foata normal form. 2/5682 useless extension candidates. Maximal degree in co-relation 46428. Up to 4388 conditions per place. [2024-06-27 17:53:54,031 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 459 selfloop transitions, 139 changer transitions 0/604 dead transitions. [2024-06-27 17:53:54,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 604 transitions, 13404 flow [2024-06-27 17:53:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:53:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:53:54,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 17:53:54,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 17:53:54,032 INFO L175 Difference]: Start difference. First operand has 441 places, 551 transitions, 11562 flow. Second operand 10 states and 182 transitions. [2024-06-27 17:53:54,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 604 transitions, 13404 flow [2024-06-27 17:53:56,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 604 transitions, 13089 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 17:53:56,164 INFO L231 Difference]: Finished difference. Result has 443 places, 554 transitions, 11687 flow [2024-06-27 17:53:56,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11247, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11687, PETRI_PLACES=443, PETRI_TRANSITIONS=554} [2024-06-27 17:53:56,164 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 401 predicate places. [2024-06-27 17:53:56,164 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 554 transitions, 11687 flow [2024-06-27 17:53:56,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:56,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:53:56,164 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 17:53:56,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 17:53:56,164 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:53:56,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:53:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash 689578034, now seen corresponding path program 1 times [2024-06-27 17:53:56,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:53:56,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079674784] [2024-06-27 17:53:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:53:56,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:53:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:53:57,284 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 17:53:57,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:53:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079674784] [2024-06-27 17:53:57,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079674784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:53:57,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:53:57,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:53:57,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963451978] [2024-06-27 17:53:57,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:53:57,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:53:57,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:53:57,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:53:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:53:57,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:53:57,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 554 transitions, 11687 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:53:57,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:53:57,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:53:57,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:53:59,253 INFO L124 PetriNetUnfolderBase]: 3276/5842 cut-off events. [2024-06-27 17:53:59,253 INFO L125 PetriNetUnfolderBase]: For 272464/272464 co-relation queries the response was YES. [2024-06-27 17:53:59,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46626 conditions, 5842 events. 3276/5842 cut-off events. For 272464/272464 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 40729 event pairs, 873 based on Foata normal form. 2/5681 useless extension candidates. Maximal degree in co-relation 46411. Up to 4751 conditions per place. [2024-06-27 17:53:59,348 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 477 selfloop transitions, 121 changer transitions 0/604 dead transitions. [2024-06-27 17:53:59,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 604 transitions, 13254 flow [2024-06-27 17:53:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:53:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:53:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 17:53:59,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 17:53:59,349 INFO L175 Difference]: Start difference. First operand has 443 places, 554 transitions, 11687 flow. Second operand 11 states and 186 transitions. [2024-06-27 17:53:59,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 604 transitions, 13254 flow [2024-06-27 17:54:01,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 604 transitions, 12854 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-27 17:54:01,655 INFO L231 Difference]: Finished difference. Result has 446 places, 556 transitions, 11665 flow [2024-06-27 17:54:01,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11287, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11665, PETRI_PLACES=446, PETRI_TRANSITIONS=556} [2024-06-27 17:54:01,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 404 predicate places. [2024-06-27 17:54:01,656 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 556 transitions, 11665 flow [2024-06-27 17:54:01,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:01,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:54:01,656 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 17:54:01,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 17:54:01,656 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:54:01,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:54:01,656 INFO L85 PathProgramCache]: Analyzing trace with hash -847841537, now seen corresponding path program 4 times [2024-06-27 17:54:01,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:54:01,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18912803] [2024-06-27 17:54:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:54:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:54:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:54:03,105 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 17:54:03,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:54:03,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18912803] [2024-06-27 17:54:03,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18912803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:54:03,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:54:03,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:54:03,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339346997] [2024-06-27 17:54:03,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:54:03,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:54:03,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:54:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:54:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:54:03,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:54:03,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 556 transitions, 11665 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:03,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:54:03,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:54:03,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:54:05,523 INFO L124 PetriNetUnfolderBase]: 3348/5952 cut-off events. [2024-06-27 17:54:05,523 INFO L125 PetriNetUnfolderBase]: For 291517/291517 co-relation queries the response was YES. [2024-06-27 17:54:05,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47703 conditions, 5952 events. 3348/5952 cut-off events. For 291517/291517 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 41491 event pairs, 676 based on Foata normal form. 2/5790 useless extension candidates. Maximal degree in co-relation 47487. Up to 3981 conditions per place. [2024-06-27 17:54:05,620 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 455 selfloop transitions, 170 changer transitions 0/631 dead transitions. [2024-06-27 17:54:05,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 631 transitions, 14017 flow [2024-06-27 17:54:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:54:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:54:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-27 17:54:05,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-06-27 17:54:05,622 INFO L175 Difference]: Start difference. First operand has 446 places, 556 transitions, 11665 flow. Second operand 12 states and 218 transitions. [2024-06-27 17:54:05,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 631 transitions, 14017 flow [2024-06-27 17:54:08,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 631 transitions, 13635 flow, removed 65 selfloop flow, removed 10 redundant places. [2024-06-27 17:54:08,245 INFO L231 Difference]: Finished difference. Result has 449 places, 564 transitions, 11893 flow [2024-06-27 17:54:08,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11293, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11893, PETRI_PLACES=449, PETRI_TRANSITIONS=564} [2024-06-27 17:54:08,245 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 407 predicate places. [2024-06-27 17:54:08,245 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 564 transitions, 11893 flow [2024-06-27 17:54:08,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:08,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:54:08,246 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 17:54:08,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 17:54:08,246 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:54:08,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:54:08,246 INFO L85 PathProgramCache]: Analyzing trace with hash 689308923, now seen corresponding path program 5 times [2024-06-27 17:54:08,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:54:08,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693991324] [2024-06-27 17:54:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:54:08,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:54:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:54:09,723 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 17:54:09,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:54:09,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693991324] [2024-06-27 17:54:09,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693991324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:54:09,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:54:09,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:54:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548603606] [2024-06-27 17:54:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:54:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:54:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:54:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:54:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:54:09,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:54:09,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 564 transitions, 11893 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:09,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:54:09,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:54:09,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:54:11,883 INFO L124 PetriNetUnfolderBase]: 3374/6028 cut-off events. [2024-06-27 17:54:11,883 INFO L125 PetriNetUnfolderBase]: For 288658/288658 co-relation queries the response was YES. [2024-06-27 17:54:11,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48502 conditions, 6028 events. 3374/6028 cut-off events. For 288658/288658 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 42347 event pairs, 719 based on Foata normal form. 2/5854 useless extension candidates. Maximal degree in co-relation 48285. Up to 4548 conditions per place. [2024-06-27 17:54:11,982 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 473 selfloop transitions, 143 changer transitions 0/622 dead transitions. [2024-06-27 17:54:11,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 622 transitions, 13727 flow [2024-06-27 17:54:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:54:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:54:11,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 17:54:11,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 17:54:11,983 INFO L175 Difference]: Start difference. First operand has 449 places, 564 transitions, 11893 flow. Second operand 11 states and 196 transitions. [2024-06-27 17:54:11,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 622 transitions, 13727 flow [2024-06-27 17:54:14,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 622 transitions, 13405 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 17:54:14,696 INFO L231 Difference]: Finished difference. Result has 452 places, 567 transitions, 12029 flow [2024-06-27 17:54:14,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11587, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12029, PETRI_PLACES=452, PETRI_TRANSITIONS=567} [2024-06-27 17:54:14,696 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 410 predicate places. [2024-06-27 17:54:14,696 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 567 transitions, 12029 flow [2024-06-27 17:54:14,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:14,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:54:14,697 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 17:54:14,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 17:54:14,697 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:54:14,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:54:14,697 INFO L85 PathProgramCache]: Analyzing trace with hash 689568393, now seen corresponding path program 6 times [2024-06-27 17:54:14,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:54:14,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259107529] [2024-06-27 17:54:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:54:14,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:54:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:54:16,045 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 17:54:16,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:54:16,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259107529] [2024-06-27 17:54:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259107529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:54:16,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:54:16,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:54:16,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256249137] [2024-06-27 17:54:16,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:54:16,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:54:16,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:54:16,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:54:16,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:54:16,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:54:16,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 567 transitions, 12029 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:16,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:54:16,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:54:16,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:54:18,140 INFO L124 PetriNetUnfolderBase]: 3376/5996 cut-off events. [2024-06-27 17:54:18,140 INFO L125 PetriNetUnfolderBase]: For 278819/278819 co-relation queries the response was YES. [2024-06-27 17:54:18,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48335 conditions, 5996 events. 3376/5996 cut-off events. For 278819/278819 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 41803 event pairs, 674 based on Foata normal form. 2/5834 useless extension candidates. Maximal degree in co-relation 48116. Up to 4005 conditions per place. [2024-06-27 17:54:18,240 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 459 selfloop transitions, 162 changer transitions 0/627 dead transitions. [2024-06-27 17:54:18,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 627 transitions, 13878 flow [2024-06-27 17:54:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:54:18,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:54:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 17:54:18,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 17:54:18,241 INFO L175 Difference]: Start difference. First operand has 452 places, 567 transitions, 12029 flow. Second operand 11 states and 200 transitions. [2024-06-27 17:54:18,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 627 transitions, 13878 flow [2024-06-27 17:54:21,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 627 transitions, 13448 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-06-27 17:54:21,008 INFO L231 Difference]: Finished difference. Result has 454 places, 570 transitions, 12081 flow [2024-06-27 17:54:21,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11611, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12081, PETRI_PLACES=454, PETRI_TRANSITIONS=570} [2024-06-27 17:54:21,009 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 412 predicate places. [2024-06-27 17:54:21,009 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 570 transitions, 12081 flow [2024-06-27 17:54:21,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:21,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:54:21,009 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 17:54:21,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 17:54:21,009 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:54:21,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:54:21,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2004106953, now seen corresponding path program 7 times [2024-06-27 17:54:21,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:54:21,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350173424] [2024-06-27 17:54:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:54:21,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:54:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:54:22,766 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 17:54:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:54:22,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350173424] [2024-06-27 17:54:22,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350173424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:54:22,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:54:22,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:54:22,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992680398] [2024-06-27 17:54:22,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:54:22,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:54:22,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:54:22,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:54:22,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:54:22,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:54:22,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 570 transitions, 12081 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:22,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:54:22,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:54:22,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:54:25,237 INFO L124 PetriNetUnfolderBase]: 3438/6009 cut-off events. [2024-06-27 17:54:25,237 INFO L125 PetriNetUnfolderBase]: For 302054/302056 co-relation queries the response was YES. [2024-06-27 17:54:25,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49535 conditions, 6009 events. 3438/6009 cut-off events. For 302054/302056 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 41147 event pairs, 315 based on Foata normal form. 2/5875 useless extension candidates. Maximal degree in co-relation 49315. Up to 3858 conditions per place. [2024-06-27 17:54:25,337 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 430 selfloop transitions, 202 changer transitions 0/638 dead transitions. [2024-06-27 17:54:25,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 638 transitions, 14617 flow [2024-06-27 17:54:25,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:54:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:54:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 17:54:25,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-06-27 17:54:25,339 INFO L175 Difference]: Start difference. First operand has 454 places, 570 transitions, 12081 flow. Second operand 11 states and 206 transitions. [2024-06-27 17:54:25,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 638 transitions, 14617 flow [2024-06-27 17:54:27,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 638 transitions, 14199 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-27 17:54:27,862 INFO L231 Difference]: Finished difference. Result has 458 places, 576 transitions, 12302 flow [2024-06-27 17:54:27,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11663, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12302, PETRI_PLACES=458, PETRI_TRANSITIONS=576} [2024-06-27 17:54:27,862 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-06-27 17:54:27,863 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 576 transitions, 12302 flow [2024-06-27 17:54:27,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:27,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:54:27,863 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 17:54:27,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 17:54:27,863 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:54:27,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:54:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2004097653, now seen corresponding path program 8 times [2024-06-27 17:54:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:54:27,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994752039] [2024-06-27 17:54:27,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:54:27,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:54:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:54:29,581 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 17:54:29,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:54:29,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994752039] [2024-06-27 17:54:29,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994752039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:54:29,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:54:29,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:54:29,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668304715] [2024-06-27 17:54:29,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:54:29,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:54:29,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:54:29,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:54:29,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:54:29,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:54:29,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 576 transitions, 12302 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:29,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:54:29,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:54:29,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:54:31,791 INFO L124 PetriNetUnfolderBase]: 3464/6067 cut-off events. [2024-06-27 17:54:31,791 INFO L125 PetriNetUnfolderBase]: For 309372/309374 co-relation queries the response was YES. [2024-06-27 17:54:31,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50234 conditions, 6067 events. 3464/6067 cut-off events. For 309372/309374 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 41659 event pairs, 318 based on Foata normal form. 2/5927 useless extension candidates. Maximal degree in co-relation 50012. Up to 4023 conditions per place. [2024-06-27 17:54:31,892 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 434 selfloop transitions, 197 changer transitions 0/637 dead transitions. [2024-06-27 17:54:31,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 637 transitions, 14383 flow [2024-06-27 17:54:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:54:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:54:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 17:54:31,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-27 17:54:31,893 INFO L175 Difference]: Start difference. First operand has 458 places, 576 transitions, 12302 flow. Second operand 11 states and 203 transitions. [2024-06-27 17:54:31,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 637 transitions, 14383 flow [2024-06-27 17:54:34,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 637 transitions, 13999 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-27 17:54:34,455 INFO L231 Difference]: Finished difference. Result has 462 places, 579 transitions, 12492 flow [2024-06-27 17:54:34,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11940, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12492, PETRI_PLACES=462, PETRI_TRANSITIONS=579} [2024-06-27 17:54:34,455 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-06-27 17:54:34,455 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 579 transitions, 12492 flow [2024-06-27 17:54:34,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:34,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:54:34,455 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 17:54:34,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 17:54:34,456 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:54:34,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:54:34,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1663165725, now seen corresponding path program 11 times [2024-06-27 17:54:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:54:34,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338573344] [2024-06-27 17:54:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:54:34,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:54:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:54:35,453 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 17:54:35,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:54:35,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338573344] [2024-06-27 17:54:35,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338573344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:54:35,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:54:35,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:54:35,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512223887] [2024-06-27 17:54:35,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:54:35,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:54:35,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:54:35,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:54:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:54:35,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:54:35,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 579 transitions, 12492 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:35,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:54:35,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:54:35,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:54:37,474 INFO L124 PetriNetUnfolderBase]: 3483/6124 cut-off events. [2024-06-27 17:54:37,474 INFO L125 PetriNetUnfolderBase]: For 317415/317417 co-relation queries the response was YES. [2024-06-27 17:54:37,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50986 conditions, 6124 events. 3483/6124 cut-off events. For 317415/317417 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 42351 event pairs, 332 based on Foata normal form. 2/5976 useless extension candidates. Maximal degree in co-relation 50762. Up to 4198 conditions per place. [2024-06-27 17:54:37,584 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 437 selfloop transitions, 188 changer transitions 0/631 dead transitions. [2024-06-27 17:54:37,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 631 transitions, 14470 flow [2024-06-27 17:54:37,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:54:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:54:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 17:54:37,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 17:54:37,585 INFO L175 Difference]: Start difference. First operand has 462 places, 579 transitions, 12492 flow. Second operand 10 states and 183 transitions. [2024-06-27 17:54:37,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 631 transitions, 14470 flow [2024-06-27 17:54:40,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 631 transitions, 13954 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-06-27 17:54:40,429 INFO L231 Difference]: Finished difference. Result has 463 places, 581 transitions, 12491 flow [2024-06-27 17:54:40,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11976, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12491, PETRI_PLACES=463, PETRI_TRANSITIONS=581} [2024-06-27 17:54:40,429 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 421 predicate places. [2024-06-27 17:54:40,430 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 581 transitions, 12491 flow [2024-06-27 17:54:40,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:40,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:54:40,430 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 17:54:40,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 17:54:40,430 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:54:40,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:54:40,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1148219501, now seen corresponding path program 9 times [2024-06-27 17:54:40,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:54:40,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250313982] [2024-06-27 17:54:40,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:54:40,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:54:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:54:41,876 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 17:54:41,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:54:41,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250313982] [2024-06-27 17:54:41,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250313982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:54:41,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:54:41,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:54:41,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703418673] [2024-06-27 17:54:41,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:54:41,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:54:41,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:54:41,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:54:41,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:54:41,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:54:41,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 581 transitions, 12491 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:41,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:54:41,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:54:41,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:54:44,119 INFO L124 PetriNetUnfolderBase]: 3485/6206 cut-off events. [2024-06-27 17:54:44,120 INFO L125 PetriNetUnfolderBase]: For 312066/312068 co-relation queries the response was YES. [2024-06-27 17:54:44,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50723 conditions, 6206 events. 3485/6206 cut-off events. For 312066/312068 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 43667 event pairs, 443 based on Foata normal form. 2/6032 useless extension candidates. Maximal degree in co-relation 50498. Up to 2418 conditions per place. [2024-06-27 17:54:44,230 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 403 selfloop transitions, 233 changer transitions 0/642 dead transitions. [2024-06-27 17:54:44,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 642 transitions, 14815 flow [2024-06-27 17:54:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:54:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:54:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 17:54:44,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-06-27 17:54:44,231 INFO L175 Difference]: Start difference. First operand has 463 places, 581 transitions, 12491 flow. Second operand 11 states and 206 transitions. [2024-06-27 17:54:44,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 642 transitions, 14815 flow [2024-06-27 17:54:47,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 642 transitions, 14292 flow, removed 75 selfloop flow, removed 8 redundant places. [2024-06-27 17:54:47,119 INFO L231 Difference]: Finished difference. Result has 466 places, 584 transitions, 12596 flow [2024-06-27 17:54:47,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11980, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12596, PETRI_PLACES=466, PETRI_TRANSITIONS=584} [2024-06-27 17:54:47,120 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-27 17:54:47,120 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 584 transitions, 12596 flow [2024-06-27 17:54:47,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:47,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:54:47,121 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 17:54:47,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 17:54:47,121 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:54:47,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:54:47,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1463162327, now seen corresponding path program 10 times [2024-06-27 17:54:47,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:54:47,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342046325] [2024-06-27 17:54:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:54:47,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:54:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:54:48,402 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 17:54:48,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:54:48,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342046325] [2024-06-27 17:54:48,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342046325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:54:48,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:54:48,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 17:54:48,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332286552] [2024-06-27 17:54:48,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:54:48,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:54:48,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:54:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:54:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:54:48,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:54:48,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 584 transitions, 12596 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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 17:54:48,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:54:48,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:54:48,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:54:50,859 INFO L124 PetriNetUnfolderBase]: 3531/6128 cut-off events. [2024-06-27 17:54:50,859 INFO L125 PetriNetUnfolderBase]: For 322555/322557 co-relation queries the response was YES. [2024-06-27 17:54:50,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51799 conditions, 6128 events. 3531/6128 cut-off events. For 322555/322557 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 41724 event pairs, 267 based on Foata normal form. 2/6004 useless extension candidates. Maximal degree in co-relation 51573. Up to 2729 conditions per place. [2024-06-27 17:54:50,983 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 333 selfloop transitions, 310 changer transitions 0/649 dead transitions. [2024-06-27 17:54:50,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 649 transitions, 15224 flow [2024-06-27 17:54:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:54:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:54:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 17:54:50,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 17:54:50,984 INFO L175 Difference]: Start difference. First operand has 466 places, 584 transitions, 12596 flow. Second operand 10 states and 186 transitions. [2024-06-27 17:54:50,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 649 transitions, 15224 flow [2024-06-27 17:54:54,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 649 transitions, 14809 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-27 17:54:54,554 INFO L231 Difference]: Finished difference. Result has 471 places, 595 transitions, 13395 flow [2024-06-27 17:54:54,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12188, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13395, PETRI_PLACES=471, PETRI_TRANSITIONS=595} [2024-06-27 17:54:54,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 429 predicate places. [2024-06-27 17:54:54,555 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 595 transitions, 13395 flow [2024-06-27 17:54:54,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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 17:54:54,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:54:54,555 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 17:54:54,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 17:54:54,555 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:54:54,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:54:54,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1996478597, now seen corresponding path program 12 times [2024-06-27 17:54:54,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:54:54,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789235469] [2024-06-27 17:54:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:54:54,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:54:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:54:55,815 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 17:54:55,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:54:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789235469] [2024-06-27 17:54:55,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789235469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:54:55,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:54:55,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:54:55,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653775851] [2024-06-27 17:54:55,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:54:55,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:54:55,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:54:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:54:55,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:54:55,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:54:55,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 595 transitions, 13395 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:54:55,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:54:55,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:54:55,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:54:58,481 INFO L124 PetriNetUnfolderBase]: 3550/6245 cut-off events. [2024-06-27 17:54:58,481 INFO L125 PetriNetUnfolderBase]: For 335868/335870 co-relation queries the response was YES. [2024-06-27 17:54:58,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53932 conditions, 6245 events. 3550/6245 cut-off events. For 335868/335870 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 43297 event pairs, 351 based on Foata normal form. 2/6093 useless extension candidates. Maximal degree in co-relation 53703. Up to 4305 conditions per place. [2024-06-27 17:54:58,591 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 449 selfloop transitions, 189 changer transitions 0/644 dead transitions. [2024-06-27 17:54:58,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 644 transitions, 15313 flow [2024-06-27 17:54:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:54:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:54:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 17:54:58,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 17:54:58,592 INFO L175 Difference]: Start difference. First operand has 471 places, 595 transitions, 13395 flow. Second operand 10 states and 180 transitions. [2024-06-27 17:54:58,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 644 transitions, 15313 flow [2024-06-27 17:55:01,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 644 transitions, 14749 flow, removed 77 selfloop flow, removed 8 redundant places. [2024-06-27 17:55:01,949 INFO L231 Difference]: Finished difference. Result has 473 places, 596 transitions, 13249 flow [2024-06-27 17:55:01,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12831, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13249, PETRI_PLACES=473, PETRI_TRANSITIONS=596} [2024-06-27 17:55:01,950 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 431 predicate places. [2024-06-27 17:55:01,950 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 596 transitions, 13249 flow [2024-06-27 17:55:01,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:01,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:55:01,950 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 17:55:01,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 17:55:01,950 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:55:01,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:55:01,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1463153027, now seen corresponding path program 11 times [2024-06-27 17:55:01,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:55:01,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314391122] [2024-06-27 17:55:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:55:01,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:55:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:55:03,914 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 17:55:03,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:55:03,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314391122] [2024-06-27 17:55:03,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314391122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:55:03,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:55:03,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:55:03,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977609781] [2024-06-27 17:55:03,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:55:03,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:55:03,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:55:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:55:03,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:55:04,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:55:04,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 596 transitions, 13249 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:04,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:55:04,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:55:04,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:55:06,535 INFO L124 PetriNetUnfolderBase]: 3576/6315 cut-off events. [2024-06-27 17:55:06,535 INFO L125 PetriNetUnfolderBase]: For 331484/331486 co-relation queries the response was YES. [2024-06-27 17:55:06,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54108 conditions, 6315 events. 3576/6315 cut-off events. For 331484/331486 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 44093 event pairs, 398 based on Foata normal form. 2/6153 useless extension candidates. Maximal degree in co-relation 53880. Up to 4172 conditions per place. [2024-06-27 17:55:06,648 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 487 selfloop transitions, 164 changer transitions 0/657 dead transitions. [2024-06-27 17:55:06,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 657 transitions, 15394 flow [2024-06-27 17:55:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:55:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:55:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 17:55:06,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-27 17:55:06,649 INFO L175 Difference]: Start difference. First operand has 473 places, 596 transitions, 13249 flow. Second operand 11 states and 204 transitions. [2024-06-27 17:55:06,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 657 transitions, 15394 flow [2024-06-27 17:55:09,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 657 transitions, 14996 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 17:55:09,877 INFO L231 Difference]: Finished difference. Result has 476 places, 599 transitions, 13359 flow [2024-06-27 17:55:09,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12851, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13359, PETRI_PLACES=476, PETRI_TRANSITIONS=599} [2024-06-27 17:55:09,878 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 434 predicate places. [2024-06-27 17:55:09,878 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 599 transitions, 13359 flow [2024-06-27 17:55:09,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:09,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:55:09,878 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 17:55:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 17:55:09,878 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:55:09,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:55:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1462885621, now seen corresponding path program 13 times [2024-06-27 17:55:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:55:09,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937245096] [2024-06-27 17:55:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:55:09,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:55:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:55:11,002 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 17:55:11,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:55:11,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937245096] [2024-06-27 17:55:11,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937245096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:55:11,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:55:11,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:55:11,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515600541] [2024-06-27 17:55:11,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:55:11,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:55:11,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:55:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:55:11,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:55:11,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:55:11,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 599 transitions, 13359 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:11,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:55:11,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:55:11,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:55:13,328 INFO L124 PetriNetUnfolderBase]: 3595/6378 cut-off events. [2024-06-27 17:55:13,329 INFO L125 PetriNetUnfolderBase]: For 341635/341637 co-relation queries the response was YES. [2024-06-27 17:55:13,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54562 conditions, 6378 events. 3595/6378 cut-off events. For 341635/341637 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 44894 event pairs, 422 based on Foata normal form. 2/6206 useless extension candidates. Maximal degree in co-relation 54333. Up to 4378 conditions per place. [2024-06-27 17:55:13,444 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 493 selfloop transitions, 152 changer transitions 0/651 dead transitions. [2024-06-27 17:55:13,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 651 transitions, 15411 flow [2024-06-27 17:55:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:55:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:55:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 17:55:13,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 17:55:13,446 INFO L175 Difference]: Start difference. First operand has 476 places, 599 transitions, 13359 flow. Second operand 10 states and 184 transitions. [2024-06-27 17:55:13,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 651 transitions, 15411 flow [2024-06-27 17:55:16,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 651 transitions, 14941 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-27 17:55:16,897 INFO L231 Difference]: Finished difference. Result has 477 places, 600 transitions, 13235 flow [2024-06-27 17:55:16,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12889, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13235, PETRI_PLACES=477, PETRI_TRANSITIONS=600} [2024-06-27 17:55:16,897 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 435 predicate places. [2024-06-27 17:55:16,897 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 600 transitions, 13235 flow [2024-06-27 17:55:16,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:16,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:55:16,898 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 17:55:16,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 17:55:16,898 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:55:16,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:55:16,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1996473017, now seen corresponding path program 14 times [2024-06-27 17:55:16,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:55:16,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582514257] [2024-06-27 17:55:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:55:16,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:55:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:55:18,072 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 17:55:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:55:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582514257] [2024-06-27 17:55:18,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582514257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:55:18,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:55:18,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:55:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675997525] [2024-06-27 17:55:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:55:18,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:55:18,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:55:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:55:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:55:18,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:55:18,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 600 transitions, 13235 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:18,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:55:18,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:55:18,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:55:20,364 INFO L124 PetriNetUnfolderBase]: 3636/6395 cut-off events. [2024-06-27 17:55:20,364 INFO L125 PetriNetUnfolderBase]: For 361749/361751 co-relation queries the response was YES. [2024-06-27 17:55:20,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55208 conditions, 6395 events. 3636/6395 cut-off events. For 361749/361751 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 44644 event pairs, 369 based on Foata normal form. 2/6241 useless extension candidates. Maximal degree in co-relation 54978. Up to 4359 conditions per place. [2024-06-27 17:55:20,474 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 450 selfloop transitions, 195 changer transitions 0/651 dead transitions. [2024-06-27 17:55:20,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 651 transitions, 15457 flow [2024-06-27 17:55:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:55:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:55:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 17:55:20,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 17:55:20,475 INFO L175 Difference]: Start difference. First operand has 477 places, 600 transitions, 13235 flow. Second operand 10 states and 180 transitions. [2024-06-27 17:55:20,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 651 transitions, 15457 flow [2024-06-27 17:55:24,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 651 transitions, 15131 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 17:55:24,240 INFO L231 Difference]: Finished difference. Result has 480 places, 605 transitions, 13620 flow [2024-06-27 17:55:24,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12909, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13620, PETRI_PLACES=480, PETRI_TRANSITIONS=605} [2024-06-27 17:55:24,241 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 438 predicate places. [2024-06-27 17:55:24,241 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 605 transitions, 13620 flow [2024-06-27 17:55:24,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:24,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:55:24,241 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 17:55:24,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 17:55:24,241 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:55:24,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:55:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash -831573821, now seen corresponding path program 12 times [2024-06-27 17:55:24,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:55:24,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234475534] [2024-06-27 17:55:24,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:55:24,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:55:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:55:25,302 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 17:55:25,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:55:25,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234475534] [2024-06-27 17:55:25,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234475534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:55:25,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:55:25,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:55:25,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063943034] [2024-06-27 17:55:25,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:55:25,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:55:25,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:55:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:55:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:55:25,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:55:25,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 605 transitions, 13620 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:25,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:55:25,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:55:25,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:55:27,953 INFO L124 PetriNetUnfolderBase]: 3672/6391 cut-off events. [2024-06-27 17:55:27,953 INFO L125 PetriNetUnfolderBase]: For 374981/374983 co-relation queries the response was YES. [2024-06-27 17:55:28,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56070 conditions, 6391 events. 3672/6391 cut-off events. For 374981/374983 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 43990 event pairs, 289 based on Foata normal form. 2/6257 useless extension candidates. Maximal degree in co-relation 55838. Up to 2642 conditions per place. [2024-06-27 17:55:28,052 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 369 selfloop transitions, 301 changer transitions 0/676 dead transitions. [2024-06-27 17:55:28,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 676 transitions, 16493 flow [2024-06-27 17:55:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:55:28,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:55:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-27 17:55:28,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48903508771929827 [2024-06-27 17:55:28,053 INFO L175 Difference]: Start difference. First operand has 480 places, 605 transitions, 13620 flow. Second operand 12 states and 223 transitions. [2024-06-27 17:55:28,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 676 transitions, 16493 flow [2024-06-27 17:55:31,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 676 transitions, 16063 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-06-27 17:55:31,624 INFO L231 Difference]: Finished difference. Result has 487 places, 610 transitions, 13975 flow [2024-06-27 17:55:31,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13190, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13975, PETRI_PLACES=487, PETRI_TRANSITIONS=610} [2024-06-27 17:55:31,624 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-06-27 17:55:31,624 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 610 transitions, 13975 flow [2024-06-27 17:55:31,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:31,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:55:31,624 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 17:55:31,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 17:55:31,625 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:55:31,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:55:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1224269663, now seen corresponding path program 13 times [2024-06-27 17:55:31,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:55:31,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928426553] [2024-06-27 17:55:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:55:31,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:55:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:55:33,051 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 17:55:33,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:55:33,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928426553] [2024-06-27 17:55:33,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928426553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:55:33,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:55:33,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:55:33,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682192778] [2024-06-27 17:55:33,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:55:33,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:55:33,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:55:33,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:55:33,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:55:33,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:55:33,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 610 transitions, 13975 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:33,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:55:33,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:55:33,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:55:35,378 INFO L124 PetriNetUnfolderBase]: 3698/6443 cut-off events. [2024-06-27 17:55:35,378 INFO L125 PetriNetUnfolderBase]: For 378855/378857 co-relation queries the response was YES. [2024-06-27 17:55:35,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57699 conditions, 6443 events. 3698/6443 cut-off events. For 378855/378857 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 44547 event pairs, 336 based on Foata normal form. 2/6305 useless extension candidates. Maximal degree in co-relation 57464. Up to 4438 conditions per place. [2024-06-27 17:55:35,498 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 443 selfloop transitions, 219 changer transitions 0/668 dead transitions. [2024-06-27 17:55:35,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 668 transitions, 16041 flow [2024-06-27 17:55:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:55:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:55:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 17:55:35,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 17:55:35,500 INFO L175 Difference]: Start difference. First operand has 487 places, 610 transitions, 13975 flow. Second operand 11 states and 200 transitions. [2024-06-27 17:55:35,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 668 transitions, 16041 flow [2024-06-27 17:55:38,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 668 transitions, 15156 flow, removed 50 selfloop flow, removed 12 redundant places. [2024-06-27 17:55:38,969 INFO L231 Difference]: Finished difference. Result has 486 places, 613 transitions, 13722 flow [2024-06-27 17:55:38,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13096, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13722, PETRI_PLACES=486, PETRI_TRANSITIONS=613} [2024-06-27 17:55:38,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 444 predicate places. [2024-06-27 17:55:38,970 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 613 transitions, 13722 flow [2024-06-27 17:55:38,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:38,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:55:38,970 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 17:55:38,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 17:55:38,970 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:55:38,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:55:38,970 INFO L85 PathProgramCache]: Analyzing trace with hash 805989335, now seen corresponding path program 14 times [2024-06-27 17:55:38,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:55:38,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841425398] [2024-06-27 17:55:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:55:38,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:55:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:55:40,136 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 17:55:40,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:55:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841425398] [2024-06-27 17:55:40,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841425398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:55:40,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:55:40,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:55:40,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955879768] [2024-06-27 17:55:40,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:55:40,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:55:40,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:55:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:55:40,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:55:40,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:55:40,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 613 transitions, 13722 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:40,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:55:40,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:55:40,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:55:42,491 INFO L124 PetriNetUnfolderBase]: 3706/6457 cut-off events. [2024-06-27 17:55:42,491 INFO L125 PetriNetUnfolderBase]: For 368873/368875 co-relation queries the response was YES. [2024-06-27 17:55:42,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56006 conditions, 6457 events. 3706/6457 cut-off events. For 368873/368875 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 44575 event pairs, 297 based on Foata normal form. 2/6319 useless extension candidates. Maximal degree in co-relation 55772. Up to 2672 conditions per place. [2024-06-27 17:55:42,608 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 362 selfloop transitions, 306 changer transitions 0/674 dead transitions. [2024-06-27 17:55:42,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 674 transitions, 16176 flow [2024-06-27 17:55:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:55:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:55:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 17:55:42,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-27 17:55:42,609 INFO L175 Difference]: Start difference. First operand has 486 places, 613 transitions, 13722 flow. Second operand 11 states and 203 transitions. [2024-06-27 17:55:42,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 674 transitions, 16176 flow [2024-06-27 17:55:46,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 674 transitions, 15530 flow, removed 106 selfloop flow, removed 9 redundant places. [2024-06-27 17:55:46,371 INFO L231 Difference]: Finished difference. Result has 488 places, 618 transitions, 13909 flow [2024-06-27 17:55:46,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13100, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13909, PETRI_PLACES=488, PETRI_TRANSITIONS=618} [2024-06-27 17:55:46,372 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 446 predicate places. [2024-06-27 17:55:46,372 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 618 transitions, 13909 flow [2024-06-27 17:55:46,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:46,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:55:46,372 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 17:55:46,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 17:55:46,372 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:55:46,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:55:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1224537069, now seen corresponding path program 15 times [2024-06-27 17:55:46,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:55:46,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266577951] [2024-06-27 17:55:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:55:46,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:55:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:55:47,541 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 17:55:47,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:55:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266577951] [2024-06-27 17:55:47,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266577951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:55:47,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:55:47,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:55:47,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557265120] [2024-06-27 17:55:47,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:55:47,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:55:47,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:55:47,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:55:47,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:55:47,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:55:47,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 618 transitions, 13909 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:47,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:55:47,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:55:47,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:55:50,214 INFO L124 PetriNetUnfolderBase]: 3703/6476 cut-off events. [2024-06-27 17:55:50,214 INFO L125 PetriNetUnfolderBase]: For 363576/363578 co-relation queries the response was YES. [2024-06-27 17:55:50,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56164 conditions, 6476 events. 3703/6476 cut-off events. For 363576/363578 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 44993 event pairs, 346 based on Foata normal form. 2/6330 useless extension candidates. Maximal degree in co-relation 55929. Up to 4556 conditions per place. [2024-06-27 17:55:50,318 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 448 selfloop transitions, 211 changer transitions 0/665 dead transitions. [2024-06-27 17:55:50,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 665 transitions, 15744 flow [2024-06-27 17:55:50,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:55:50,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:55:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 17:55:50,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 17:55:50,319 INFO L175 Difference]: Start difference. First operand has 488 places, 618 transitions, 13909 flow. Second operand 10 states and 178 transitions. [2024-06-27 17:55:50,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 665 transitions, 15744 flow [2024-06-27 17:55:53,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 665 transitions, 14950 flow, removed 163 selfloop flow, removed 7 redundant places. [2024-06-27 17:55:53,656 INFO L231 Difference]: Finished difference. Result has 491 places, 619 transitions, 13635 flow [2024-06-27 17:55:53,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13195, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13635, PETRI_PLACES=491, PETRI_TRANSITIONS=619} [2024-06-27 17:55:53,656 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 449 predicate places. [2024-06-27 17:55:53,656 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 619 transitions, 13635 flow [2024-06-27 17:55:53,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:53,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:55:53,657 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 17:55:53,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 17:55:53,657 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:55:53,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:55:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1224529133, now seen corresponding path program 15 times [2024-06-27 17:55:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:55:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004968148] [2024-06-27 17:55:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:55:53,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:55:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:55:54,853 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 17:55:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:55:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004968148] [2024-06-27 17:55:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004968148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:55:54,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:55:54,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:55:54,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922074823] [2024-06-27 17:55:54,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:55:54,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:55:54,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:55:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:55:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:55:54,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:55:54,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 619 transitions, 13635 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:55:54,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:55:54,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:55:54,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:55:57,330 INFO L124 PetriNetUnfolderBase]: 3729/6516 cut-off events. [2024-06-27 17:55:57,330 INFO L125 PetriNetUnfolderBase]: For 362192/362194 co-relation queries the response was YES. [2024-06-27 17:55:57,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55641 conditions, 6516 events. 3729/6516 cut-off events. For 362192/362194 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 45327 event pairs, 347 based on Foata normal form. 2/6370 useless extension candidates. Maximal degree in co-relation 55405. Up to 4558 conditions per place. [2024-06-27 17:55:57,451 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 453 selfloop transitions, 215 changer transitions 0/674 dead transitions. [2024-06-27 17:55:57,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 674 transitions, 15611 flow [2024-06-27 17:55:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:55:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:55:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 17:55:57,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 17:55:57,452 INFO L175 Difference]: Start difference. First operand has 491 places, 619 transitions, 13635 flow. Second operand 11 states and 196 transitions. [2024-06-27 17:55:57,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 674 transitions, 15611 flow [2024-06-27 17:56:00,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 674 transitions, 15180 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 17:56:00,796 INFO L231 Difference]: Finished difference. Result has 494 places, 622 transitions, 13832 flow [2024-06-27 17:56:00,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13204, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13832, PETRI_PLACES=494, PETRI_TRANSITIONS=622} [2024-06-27 17:56:00,797 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 452 predicate places. [2024-06-27 17:56:00,797 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 622 transitions, 13832 flow [2024-06-27 17:56:00,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:00,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:00,797 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 17:56:00,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 17:56:00,797 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:56:00,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:00,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1462893557, now seen corresponding path program 16 times [2024-06-27 17:56:00,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:00,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791741629] [2024-06-27 17:56:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:00,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:02,212 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 17:56:02,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:02,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791741629] [2024-06-27 17:56:02,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791741629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:02,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:02,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:56:02,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771517462] [2024-06-27 17:56:02,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:02,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:56:02,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:02,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:56:02,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:56:02,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:56:02,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 622 transitions, 13832 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:02,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:02,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:56:02,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:04,711 INFO L124 PetriNetUnfolderBase]: 3755/6676 cut-off events. [2024-06-27 17:56:04,712 INFO L125 PetriNetUnfolderBase]: For 378471/378473 co-relation queries the response was YES. [2024-06-27 17:56:04,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56491 conditions, 6676 events. 3755/6676 cut-off events. For 378471/378473 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 47322 event pairs, 444 based on Foata normal form. 2/6490 useless extension candidates. Maximal degree in co-relation 56254. Up to 4598 conditions per place. [2024-06-27 17:56:04,846 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 518 selfloop transitions, 157 changer transitions 0/681 dead transitions. [2024-06-27 17:56:04,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 681 transitions, 16064 flow [2024-06-27 17:56:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:56:04,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:56:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 17:56:04,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-27 17:56:04,847 INFO L175 Difference]: Start difference. First operand has 494 places, 622 transitions, 13832 flow. Second operand 11 states and 202 transitions. [2024-06-27 17:56:04,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 681 transitions, 16064 flow [2024-06-27 17:56:08,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 681 transitions, 15474 flow, removed 82 selfloop flow, removed 9 redundant places. [2024-06-27 17:56:08,365 INFO L231 Difference]: Finished difference. Result has 496 places, 625 transitions, 13760 flow [2024-06-27 17:56:08,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13242, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13760, PETRI_PLACES=496, PETRI_TRANSITIONS=625} [2024-06-27 17:56:08,366 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 454 predicate places. [2024-06-27 17:56:08,366 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 625 transitions, 13760 flow [2024-06-27 17:56:08,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:08,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:08,366 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 17:56:08,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 17:56:08,366 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:56:08,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:08,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1455533971, now seen corresponding path program 16 times [2024-06-27 17:56:08,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:08,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558320594] [2024-06-27 17:56:08,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:08,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:09,464 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 17:56:09,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:09,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558320594] [2024-06-27 17:56:09,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558320594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:09,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:09,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 17:56:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861864877] [2024-06-27 17:56:09,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:09,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:56:09,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:09,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:56:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:56:09,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:56:09,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 625 transitions, 13760 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:09,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:09,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:56:09,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:11,796 INFO L124 PetriNetUnfolderBase]: 3774/6721 cut-off events. [2024-06-27 17:56:11,796 INFO L125 PetriNetUnfolderBase]: For 385415/385417 co-relation queries the response was YES. [2024-06-27 17:56:11,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56504 conditions, 6721 events. 3774/6721 cut-off events. For 385415/385417 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 47880 event pairs, 452 based on Foata normal form. 2/6531 useless extension candidates. Maximal degree in co-relation 56266. Up to 4667 conditions per place. [2024-06-27 17:56:11,925 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 521 selfloop transitions, 151 changer transitions 0/678 dead transitions. [2024-06-27 17:56:11,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 678 transitions, 16044 flow [2024-06-27 17:56:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:56:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:56:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 17:56:11,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 17:56:11,926 INFO L175 Difference]: Start difference. First operand has 496 places, 625 transitions, 13760 flow. Second operand 10 states and 186 transitions. [2024-06-27 17:56:11,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 678 transitions, 16044 flow [2024-06-27 17:56:15,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 678 transitions, 15564 flow, removed 85 selfloop flow, removed 9 redundant places. [2024-06-27 17:56:15,904 INFO L231 Difference]: Finished difference. Result has 497 places, 626 transitions, 13628 flow [2024-06-27 17:56:15,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13280, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13628, PETRI_PLACES=497, PETRI_TRANSITIONS=626} [2024-06-27 17:56:15,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 455 predicate places. [2024-06-27 17:56:15,904 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 626 transitions, 13628 flow [2024-06-27 17:56:15,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:15,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:15,905 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 17:56:15,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 17:56:15,905 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:56:15,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1455528391, now seen corresponding path program 17 times [2024-06-27 17:56:15,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:15,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770101857] [2024-06-27 17:56:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:15,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:17,039 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 17:56:17,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770101857] [2024-06-27 17:56:17,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770101857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:17,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:17,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:56:17,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58051406] [2024-06-27 17:56:17,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:17,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:56:17,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:17,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:56:17,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:56:17,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:56:17,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 626 transitions, 13628 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:17,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:17,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:56:17,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:19,536 INFO L124 PetriNetUnfolderBase]: 3793/6754 cut-off events. [2024-06-27 17:56:19,536 INFO L125 PetriNetUnfolderBase]: For 387500/387502 co-relation queries the response was YES. [2024-06-27 17:56:19,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56597 conditions, 6754 events. 3793/6754 cut-off events. For 387500/387502 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 48147 event pairs, 453 based on Foata normal form. 2/6564 useless extension candidates. Maximal degree in co-relation 56358. Up to 4627 conditions per place. [2024-06-27 17:56:19,666 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 520 selfloop transitions, 153 changer transitions 0/679 dead transitions. [2024-06-27 17:56:19,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 679 transitions, 15916 flow [2024-06-27 17:56:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:56:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:56:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 17:56:19,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 17:56:19,668 INFO L175 Difference]: Start difference. First operand has 497 places, 626 transitions, 13628 flow. Second operand 10 states and 186 transitions. [2024-06-27 17:56:19,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 679 transitions, 15916 flow [2024-06-27 17:56:23,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 679 transitions, 15588 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 17:56:23,691 INFO L231 Difference]: Finished difference. Result has 499 places, 627 transitions, 13654 flow [2024-06-27 17:56:23,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13300, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13654, PETRI_PLACES=499, PETRI_TRANSITIONS=627} [2024-06-27 17:56:23,692 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 457 predicate places. [2024-06-27 17:56:23,692 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 627 transitions, 13654 flow [2024-06-27 17:56:23,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:23,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:23,694 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 17:56:23,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 17:56:23,695 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:56:23,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash -381340275, now seen corresponding path program 18 times [2024-06-27 17:56:23,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:23,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14551274] [2024-06-27 17:56:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:23,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:24,850 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 17:56:24,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:24,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14551274] [2024-06-27 17:56:24,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14551274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:24,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:24,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:56:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546102394] [2024-06-27 17:56:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:24,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:56:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:56:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:56:24,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:56:24,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 627 transitions, 13654 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:24,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:24,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:56:24,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:27,394 INFO L124 PetriNetUnfolderBase]: 3812/6799 cut-off events. [2024-06-27 17:56:27,394 INFO L125 PetriNetUnfolderBase]: For 394300/394302 co-relation queries the response was YES. [2024-06-27 17:56:27,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56989 conditions, 6799 events. 3812/6799 cut-off events. For 394300/394302 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 48616 event pairs, 480 based on Foata normal form. 2/6605 useless extension candidates. Maximal degree in co-relation 56749. Up to 4733 conditions per place. [2024-06-27 17:56:27,514 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 513 selfloop transitions, 156 changer transitions 0/675 dead transitions. [2024-06-27 17:56:27,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 675 transitions, 15696 flow [2024-06-27 17:56:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:56:27,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:56:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 17:56:27,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 17:56:27,515 INFO L175 Difference]: Start difference. First operand has 499 places, 627 transitions, 13654 flow. Second operand 10 states and 180 transitions. [2024-06-27 17:56:27,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 675 transitions, 15696 flow [2024-06-27 17:56:31,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 675 transitions, 15362 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 17:56:31,348 INFO L231 Difference]: Finished difference. Result has 501 places, 628 transitions, 13682 flow [2024-06-27 17:56:31,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13320, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13682, PETRI_PLACES=501, PETRI_TRANSITIONS=628} [2024-06-27 17:56:31,349 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 459 predicate places. [2024-06-27 17:56:31,349 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 628 transitions, 13682 flow [2024-06-27 17:56:31,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:31,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:31,349 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 17:56:31,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 17:56:31,350 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:56:31,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:31,350 INFO L85 PathProgramCache]: Analyzing trace with hash -381345855, now seen corresponding path program 19 times [2024-06-27 17:56:31,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:31,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967886299] [2024-06-27 17:56:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:31,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:32,451 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 17:56:32,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967886299] [2024-06-27 17:56:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967886299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:32,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:32,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:56:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457087719] [2024-06-27 17:56:32,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:32,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:56:32,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:32,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:56:32,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:56:32,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:56:32,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 628 transitions, 13682 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:32,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:32,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:56:32,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:34,949 INFO L124 PetriNetUnfolderBase]: 3831/6838 cut-off events. [2024-06-27 17:56:34,949 INFO L125 PetriNetUnfolderBase]: For 400478/400480 co-relation queries the response was YES. [2024-06-27 17:56:35,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57338 conditions, 6838 events. 3831/6838 cut-off events. For 400478/400480 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 49012 event pairs, 481 based on Foata normal form. 2/6642 useless extension candidates. Maximal degree in co-relation 57097. Up to 4727 conditions per place. [2024-06-27 17:56:35,069 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 513 selfloop transitions, 159 changer transitions 0/678 dead transitions. [2024-06-27 17:56:35,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 678 transitions, 15895 flow [2024-06-27 17:56:35,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:56:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:56:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 17:56:35,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 17:56:35,070 INFO L175 Difference]: Start difference. First operand has 501 places, 628 transitions, 13682 flow. Second operand 10 states and 182 transitions. [2024-06-27 17:56:35,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 678 transitions, 15895 flow [2024-06-27 17:56:38,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 678 transitions, 15520 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 17:56:38,923 INFO L231 Difference]: Finished difference. Result has 504 places, 632 transitions, 13968 flow [2024-06-27 17:56:38,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13340, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13968, PETRI_PLACES=504, PETRI_TRANSITIONS=632} [2024-06-27 17:56:38,923 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 462 predicate places. [2024-06-27 17:56:38,923 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 632 transitions, 13968 flow [2024-06-27 17:56:38,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:38,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:38,923 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 17:56:38,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 17:56:38,924 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:56:38,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:38,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1256082451, now seen corresponding path program 20 times [2024-06-27 17:56:38,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:38,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640475659] [2024-06-27 17:56:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:38,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:39,967 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 17:56:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640475659] [2024-06-27 17:56:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640475659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:39,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:39,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:56:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311924944] [2024-06-27 17:56:39,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:39,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:56:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:39,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:56:39,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:56:40,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:56:40,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 632 transitions, 13968 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:40,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:40,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:56:40,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:42,357 INFO L124 PetriNetUnfolderBase]: 3839/6836 cut-off events. [2024-06-27 17:56:42,357 INFO L125 PetriNetUnfolderBase]: For 399283/399285 co-relation queries the response was YES. [2024-06-27 17:56:42,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57261 conditions, 6836 events. 3839/6836 cut-off events. For 399283/399285 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 48874 event pairs, 481 based on Foata normal form. 2/6646 useless extension candidates. Maximal degree in co-relation 57018. Up to 4477 conditions per place. [2024-06-27 17:56:42,490 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 503 selfloop transitions, 173 changer transitions 0/682 dead transitions. [2024-06-27 17:56:42,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 682 transitions, 16084 flow [2024-06-27 17:56:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:56:42,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:56:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 17:56:42,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 17:56:42,491 INFO L175 Difference]: Start difference. First operand has 504 places, 632 transitions, 13968 flow. Second operand 10 states and 179 transitions. [2024-06-27 17:56:42,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 682 transitions, 16084 flow [2024-06-27 17:56:46,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 682 transitions, 15498 flow, removed 138 selfloop flow, removed 7 redundant places. [2024-06-27 17:56:46,599 INFO L231 Difference]: Finished difference. Result has 508 places, 638 transitions, 14102 flow [2024-06-27 17:56:46,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13382, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14102, PETRI_PLACES=508, PETRI_TRANSITIONS=638} [2024-06-27 17:56:46,599 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 466 predicate places. [2024-06-27 17:56:46,599 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 638 transitions, 14102 flow [2024-06-27 17:56:46,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:46,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:46,599 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 17:56:46,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 17:56:46,600 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:56:46,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1261804307, now seen corresponding path program 17 times [2024-06-27 17:56:46,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:46,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143430197] [2024-06-27 17:56:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:46,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:48,073 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 17:56:48,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:48,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143430197] [2024-06-27 17:56:48,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143430197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:48,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:48,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:56:48,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310207755] [2024-06-27 17:56:48,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:48,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:56:48,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:48,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:56:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:56:48,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:56:48,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 638 transitions, 14102 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:48,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:48,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:56:48,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:50,894 INFO L124 PetriNetUnfolderBase]: 3845/6876 cut-off events. [2024-06-27 17:56:50,894 INFO L125 PetriNetUnfolderBase]: For 393240/393242 co-relation queries the response was YES. [2024-06-27 17:56:50,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57287 conditions, 6876 events. 3845/6876 cut-off events. For 393240/393242 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 49433 event pairs, 490 based on Foata normal form. 2/6676 useless extension candidates. Maximal degree in co-relation 57042. Up to 4756 conditions per place. [2024-06-27 17:56:51,011 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 526 selfloop transitions, 161 changer transitions 0/693 dead transitions. [2024-06-27 17:56:51,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 693 transitions, 16278 flow [2024-06-27 17:56:51,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:56:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:56:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 17:56:51,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 17:56:51,012 INFO L175 Difference]: Start difference. First operand has 508 places, 638 transitions, 14102 flow. Second operand 11 states and 198 transitions. [2024-06-27 17:56:51,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 693 transitions, 16278 flow [2024-06-27 17:56:55,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 693 transitions, 15636 flow, removed 163 selfloop flow, removed 7 redundant places. [2024-06-27 17:56:55,109 INFO L231 Difference]: Finished difference. Result has 512 places, 641 transitions, 14000 flow [2024-06-27 17:56:55,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13472, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14000, PETRI_PLACES=512, PETRI_TRANSITIONS=641} [2024-06-27 17:56:55,110 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 470 predicate places. [2024-06-27 17:56:55,110 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 641 transitions, 14000 flow [2024-06-27 17:56:55,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:56:55,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:55,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:55,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 17:56:55,111 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:56:55,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:55,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2108990873, now seen corresponding path program 1 times [2024-06-27 17:56:55,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:55,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120910287] [2024-06-27 17:56:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:56,554 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 17:56:56,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:56,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120910287] [2024-06-27 17:56:56,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120910287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:56,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:56,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 17:56:56,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318759704] [2024-06-27 17:56:56,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:56,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:56:56,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:56,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:56:56,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:56:56,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:56:56,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 641 transitions, 14000 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:56:56,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:56,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:56:56,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:59,134 INFO L124 PetriNetUnfolderBase]: 3874/6991 cut-off events. [2024-06-27 17:56:59,134 INFO L125 PetriNetUnfolderBase]: For 394821/394821 co-relation queries the response was YES. [2024-06-27 17:56:59,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57381 conditions, 6991 events. 3874/6991 cut-off events. For 394821/394821 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 50886 event pairs, 1053 based on Foata normal form. 2/6770 useless extension candidates. Maximal degree in co-relation 57135. Up to 5797 conditions per place. [2024-06-27 17:56:59,260 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 572 selfloop transitions, 114 changer transitions 0/692 dead transitions. [2024-06-27 17:56:59,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 692 transitions, 16063 flow [2024-06-27 17:56:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:56:59,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:56:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 17:56:59,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-06-27 17:56:59,261 INFO L175 Difference]: Start difference. First operand has 512 places, 641 transitions, 14000 flow. Second operand 11 states and 184 transitions. [2024-06-27 17:56:59,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 692 transitions, 16063 flow [2024-06-27 17:57:03,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 692 transitions, 15549 flow, removed 98 selfloop flow, removed 9 redundant places. [2024-06-27 17:57:03,496 INFO L231 Difference]: Finished difference. Result has 515 places, 646 transitions, 14109 flow [2024-06-27 17:57:03,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13486, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14109, PETRI_PLACES=515, PETRI_TRANSITIONS=646} [2024-06-27 17:57:03,496 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 473 predicate places. [2024-06-27 17:57:03,496 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 646 transitions, 14109 flow [2024-06-27 17:57:03,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:57:03,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:57:03,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:57:03,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 17:57:03,497 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:57:03,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:57:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1202684323, now seen corresponding path program 2 times [2024-06-27 17:57:03,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:57:03,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586458601] [2024-06-27 17:57:03,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:57:03,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:57:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:57:04,655 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 17:57:04,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:57:04,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586458601] [2024-06-27 17:57:04,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586458601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:57:04,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:57:04,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:57:04,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677778844] [2024-06-27 17:57:04,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:57:04,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:57:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:57:04,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:57:04,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:57:04,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:57:04,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 646 transitions, 14109 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 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 17:57:04,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:57:04,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:57:04,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:57:07,320 INFO L124 PetriNetUnfolderBase]: 3893/7000 cut-off events. [2024-06-27 17:57:07,320 INFO L125 PetriNetUnfolderBase]: For 405656/405656 co-relation queries the response was YES. [2024-06-27 17:57:07,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57370 conditions, 7000 events. 3893/7000 cut-off events. For 405656/405656 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 50877 event pairs, 1058 based on Foata normal form. 2/6787 useless extension candidates. Maximal degree in co-relation 57122. Up to 5906 conditions per place. [2024-06-27 17:57:07,443 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 603 selfloop transitions, 87 changer transitions 0/696 dead transitions. [2024-06-27 17:57:07,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 696 transitions, 15879 flow [2024-06-27 17:57:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:57:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:57:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 17:57:07,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 17:57:07,444 INFO L175 Difference]: Start difference. First operand has 515 places, 646 transitions, 14109 flow. Second operand 11 states and 187 transitions. [2024-06-27 17:57:07,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 696 transitions, 15879 flow [2024-06-27 17:57:11,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 696 transitions, 15102 flow, removed 169 selfloop flow, removed 9 redundant places. [2024-06-27 17:57:11,083 INFO L231 Difference]: Finished difference. Result has 517 places, 648 transitions, 13688 flow [2024-06-27 17:57:11,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13332, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13688, PETRI_PLACES=517, PETRI_TRANSITIONS=648} [2024-06-27 17:57:11,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 475 predicate places. [2024-06-27 17:57:11,084 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 648 transitions, 13688 flow [2024-06-27 17:57:11,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 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 17:57:11,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:57:11,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:57:11,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 17:57:11,085 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:57:11,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:57:11,085 INFO L85 PathProgramCache]: Analyzing trace with hash 526190031, now seen corresponding path program 3 times [2024-06-27 17:57:11,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:57:11,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278753672] [2024-06-27 17:57:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:57:11,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:57:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:57:12,216 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 17:57:12,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:57:12,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278753672] [2024-06-27 17:57:12,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278753672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:57:12,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:57:12,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:57:12,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545446745] [2024-06-27 17:57:12,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:57:12,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:57:12,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:57:12,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:57:12,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:57:12,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:57:12,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 648 transitions, 13688 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 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 17:57:12,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:57:12,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:57:12,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:57:14,725 INFO L124 PetriNetUnfolderBase]: 3919/7058 cut-off events. [2024-06-27 17:57:14,725 INFO L125 PetriNetUnfolderBase]: For 409150/409150 co-relation queries the response was YES. [2024-06-27 17:57:14,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57242 conditions, 7058 events. 3919/7058 cut-off events. For 409150/409150 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 51390 event pairs, 1055 based on Foata normal form. 2/6841 useless extension candidates. Maximal degree in co-relation 56994. Up to 5900 conditions per place. [2024-06-27 17:57:14,853 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 608 selfloop transitions, 88 changer transitions 0/702 dead transitions. [2024-06-27 17:57:14,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 702 transitions, 15542 flow [2024-06-27 17:57:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:57:14,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:57:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 17:57:14,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 17:57:14,854 INFO L175 Difference]: Start difference. First operand has 517 places, 648 transitions, 13688 flow. Second operand 11 states and 190 transitions. [2024-06-27 17:57:14,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 702 transitions, 15542 flow [2024-06-27 17:57:18,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 702 transitions, 15236 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-06-27 17:57:18,994 INFO L231 Difference]: Finished difference. Result has 522 places, 652 transitions, 13808 flow [2024-06-27 17:57:18,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13382, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13808, PETRI_PLACES=522, PETRI_TRANSITIONS=652} [2024-06-27 17:57:18,994 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 480 predicate places. [2024-06-27 17:57:18,994 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 652 transitions, 13808 flow [2024-06-27 17:57:18,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 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 17:57:18,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:57:18,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:57:18,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 17:57:18,995 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:57:18,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:57:18,995 INFO L85 PathProgramCache]: Analyzing trace with hash 521721381, now seen corresponding path program 4 times [2024-06-27 17:57:18,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:57:18,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457350326] [2024-06-27 17:57:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:57:18,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:57:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:57:20,102 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 17:57:20,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:57:20,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457350326] [2024-06-27 17:57:20,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457350326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:57:20,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:57:20,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:57:20,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311810784] [2024-06-27 17:57:20,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:57:20,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:57:20,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:57:20,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:57:20,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:57:20,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:57:20,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 652 transitions, 13808 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 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 17:57:20,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:57:20,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:57:20,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:57:22,807 INFO L124 PetriNetUnfolderBase]: 3945/7115 cut-off events. [2024-06-27 17:57:22,807 INFO L125 PetriNetUnfolderBase]: For 418756/418756 co-relation queries the response was YES. [2024-06-27 17:57:22,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57739 conditions, 7115 events. 3945/7115 cut-off events. For 418756/418756 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 52108 event pairs, 1047 based on Foata normal form. 2/6894 useless extension candidates. Maximal degree in co-relation 57489. Up to 5774 conditions per place. [2024-06-27 17:57:22,932 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 613 selfloop transitions, 88 changer transitions 0/707 dead transitions. [2024-06-27 17:57:22,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 707 transitions, 15681 flow [2024-06-27 17:57:22,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:57:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:57:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 17:57:22,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4569377990430622 [2024-06-27 17:57:22,933 INFO L175 Difference]: Start difference. First operand has 522 places, 652 transitions, 13808 flow. Second operand 11 states and 191 transitions. [2024-06-27 17:57:22,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 707 transitions, 15681 flow [2024-06-27 17:57:27,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 707 transitions, 15273 flow, removed 108 selfloop flow, removed 9 redundant places. [2024-06-27 17:57:27,127 INFO L231 Difference]: Finished difference. Result has 525 places, 656 transitions, 13829 flow [2024-06-27 17:57:27,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13400, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13829, PETRI_PLACES=525, PETRI_TRANSITIONS=656} [2024-06-27 17:57:27,128 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 483 predicate places. [2024-06-27 17:57:27,128 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 656 transitions, 13829 flow [2024-06-27 17:57:27,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 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 17:57:27,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:57:27,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:57:27,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 17:57:27,129 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:57:27,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:57:27,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1306850199, now seen corresponding path program 5 times [2024-06-27 17:57:27,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:57:27,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550418241] [2024-06-27 17:57:27,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:57:27,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:57:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:57:28,608 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 17:57:28,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:57:28,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550418241] [2024-06-27 17:57:28,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550418241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:57:28,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:57:28,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:57:28,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967648230] [2024-06-27 17:57:28,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:57:28,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:57:28,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:57:28,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:57:28,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:57:28,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:57:28,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 656 transitions, 13829 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 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 17:57:28,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:57:28,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:57:28,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:57:31,203 INFO L124 PetriNetUnfolderBase]: 3974/7148 cut-off events. [2024-06-27 17:57:31,203 INFO L125 PetriNetUnfolderBase]: For 429899/429899 co-relation queries the response was YES. [2024-06-27 17:57:31,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58240 conditions, 7148 events. 3974/7148 cut-off events. For 429899/429899 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 52137 event pairs, 1055 based on Foata normal form. 2/6935 useless extension candidates. Maximal degree in co-relation 57988. Up to 6103 conditions per place. [2024-06-27 17:57:31,337 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 631 selfloop transitions, 71 changer transitions 0/708 dead transitions. [2024-06-27 17:57:31,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 708 transitions, 15819 flow [2024-06-27 17:57:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:57:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:57:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-27 17:57:31,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232456140350877 [2024-06-27 17:57:31,338 INFO L175 Difference]: Start difference. First operand has 525 places, 656 transitions, 13829 flow. Second operand 12 states and 193 transitions. [2024-06-27 17:57:31,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 708 transitions, 15819 flow [2024-06-27 17:57:35,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 708 transitions, 15428 flow, removed 111 selfloop flow, removed 8 redundant places. [2024-06-27 17:57:35,873 INFO L231 Difference]: Finished difference. Result has 533 places, 662 transitions, 13894 flow [2024-06-27 17:57:35,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13438, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13894, PETRI_PLACES=533, PETRI_TRANSITIONS=662} [2024-06-27 17:57:35,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 491 predicate places. [2024-06-27 17:57:35,873 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 662 transitions, 13894 flow [2024-06-27 17:57:35,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 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 17:57:35,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:57:35,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:57:35,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 17:57:35,874 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:57:35,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:57:35,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1030543001, now seen corresponding path program 1 times [2024-06-27 17:57:35,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:57:35,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345752402] [2024-06-27 17:57:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:57:35,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:57:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:57:37,172 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 17:57:37,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:57:37,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345752402] [2024-06-27 17:57:37,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345752402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:57:37,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:57:37,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 17:57:37,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589586123] [2024-06-27 17:57:37,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:57:37,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:57:37,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:57:37,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:57:37,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:57:37,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:57:37,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 662 transitions, 13894 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:57:37,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:57:37,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:57:37,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:57:40,058 INFO L124 PetriNetUnfolderBase]: 4062/7317 cut-off events. [2024-06-27 17:57:40,059 INFO L125 PetriNetUnfolderBase]: For 524563/524563 co-relation queries the response was YES. [2024-06-27 17:57:40,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59270 conditions, 7317 events. 4062/7317 cut-off events. For 524563/524563 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 53745 event pairs, 1125 based on Foata normal form. 10/7110 useless extension candidates. Maximal degree in co-relation 59013. Up to 6012 conditions per place. [2024-06-27 17:57:40,192 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 625 selfloop transitions, 91 changer transitions 0/722 dead transitions. [2024-06-27 17:57:40,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 722 transitions, 15757 flow [2024-06-27 17:57:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:57:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:57:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-27 17:57:40,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 17:57:40,193 INFO L175 Difference]: Start difference. First operand has 533 places, 662 transitions, 13894 flow. Second operand 12 states and 209 transitions. [2024-06-27 17:57:40,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 722 transitions, 15757 flow [2024-06-27 17:57:45,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 722 transitions, 15435 flow, removed 108 selfloop flow, removed 6 redundant places. [2024-06-27 17:57:45,398 INFO L231 Difference]: Finished difference. Result has 539 places, 664 transitions, 13909 flow [2024-06-27 17:57:45,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13572, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13909, PETRI_PLACES=539, PETRI_TRANSITIONS=664} [2024-06-27 17:57:45,398 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 497 predicate places. [2024-06-27 17:57:45,399 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 664 transitions, 13909 flow [2024-06-27 17:57:45,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:57:45,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:57:45,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:57:45,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 17:57:45,399 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:57:45,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:57:45,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1927198867, now seen corresponding path program 6 times [2024-06-27 17:57:45,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:57:45,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781432010] [2024-06-27 17:57:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:57:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:57:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:57:47,201 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 17:57:47,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:57:47,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781432010] [2024-06-27 17:57:47,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781432010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:57:47,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:57:47,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 17:57:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859628729] [2024-06-27 17:57:47,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:57:47,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:57:47,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:57:47,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:57:47,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:57:47,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:57:47,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 664 transitions, 13909 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:57:47,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:57:47,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:57:47,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:57:50,678 INFO L124 PetriNetUnfolderBase]: 4081/7403 cut-off events. [2024-06-27 17:57:50,678 INFO L125 PetriNetUnfolderBase]: For 466905/466905 co-relation queries the response was YES. [2024-06-27 17:57:50,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59645 conditions, 7403 events. 4081/7403 cut-off events. For 466905/466905 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 54835 event pairs, 1022 based on Foata normal form. 2/7169 useless extension candidates. Maximal degree in co-relation 59387. Up to 5750 conditions per place. [2024-06-27 17:57:50,822 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 584 selfloop transitions, 130 changer transitions 0/720 dead transitions. [2024-06-27 17:57:50,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 720 transitions, 16059 flow [2024-06-27 17:57:50,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:57:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:57:50,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 17:57:50,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47129186602870815 [2024-06-27 17:57:50,823 INFO L175 Difference]: Start difference. First operand has 539 places, 664 transitions, 13909 flow. Second operand 11 states and 197 transitions. [2024-06-27 17:57:50,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 720 transitions, 16059 flow [2024-06-27 17:57:55,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 720 transitions, 15771 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-27 17:57:55,241 INFO L231 Difference]: Finished difference. Result has 542 places, 666 transitions, 14080 flow [2024-06-27 17:57:55,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13621, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14080, PETRI_PLACES=542, PETRI_TRANSITIONS=666} [2024-06-27 17:57:55,242 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 500 predicate places. [2024-06-27 17:57:55,242 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 666 transitions, 14080 flow [2024-06-27 17:57:55,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:57:55,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:57:55,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:57:55,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 17:57:55,242 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:57:55,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:57:55,242 INFO L85 PathProgramCache]: Analyzing trace with hash 532109741, now seen corresponding path program 7 times [2024-06-27 17:57:55,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:57:55,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151544080] [2024-06-27 17:57:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:57:55,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:57:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:57:56,983 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 17:57:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:57:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151544080] [2024-06-27 17:57:56,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151544080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:57:56,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:57:56,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 17:57:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106020178] [2024-06-27 17:57:56,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:57:56,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:57:56,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:57:56,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:57:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:57:57,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:57:57,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 666 transitions, 14080 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:57:57,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:57:57,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:57:57,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:58:00,519 INFO L124 PetriNetUnfolderBase]: 4100/7442 cut-off events. [2024-06-27 17:58:00,519 INFO L125 PetriNetUnfolderBase]: For 464202/464202 co-relation queries the response was YES. [2024-06-27 17:58:00,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59971 conditions, 7442 events. 4100/7442 cut-off events. For 464202/464202 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 55249 event pairs, 1028 based on Foata normal form. 2/7206 useless extension candidates. Maximal degree in co-relation 59712. Up to 5773 conditions per place. [2024-06-27 17:58:00,656 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 588 selfloop transitions, 129 changer transitions 0/723 dead transitions. [2024-06-27 17:58:00,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 723 transitions, 16259 flow [2024-06-27 17:58:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:58:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:58:00,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 17:58:00,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 17:58:00,657 INFO L175 Difference]: Start difference. First operand has 542 places, 666 transitions, 14080 flow. Second operand 11 states and 196 transitions. [2024-06-27 17:58:00,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 723 transitions, 16259 flow [2024-06-27 17:58:04,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 723 transitions, 15812 flow, removed 92 selfloop flow, removed 10 redundant places. [2024-06-27 17:58:04,939 INFO L231 Difference]: Finished difference. Result has 543 places, 668 transitions, 14095 flow [2024-06-27 17:58:04,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13633, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14095, PETRI_PLACES=543, PETRI_TRANSITIONS=668} [2024-06-27 17:58:04,940 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 501 predicate places. [2024-06-27 17:58:04,940 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 668 transitions, 14095 flow [2024-06-27 17:58:04,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:58:04,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:58:04,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:58:04,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 17:58:04,940 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:58:04,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:58:04,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2077000869, now seen corresponding path program 8 times [2024-06-27 17:58:04,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:58:04,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125329455] [2024-06-27 17:58:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:58:04,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:58:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:58:06,254 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 17:58:06,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:58:06,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125329455] [2024-06-27 17:58:06,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125329455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:58:06,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:58:06,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 17:58:06,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059658386] [2024-06-27 17:58:06,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:58:06,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:58:06,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:58:06,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:58:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:58:06,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:58:06,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 668 transitions, 14095 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:58:06,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:58:06,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:58:06,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:58:09,606 INFO L124 PetriNetUnfolderBase]: 4162/7566 cut-off events. [2024-06-27 17:58:09,606 INFO L125 PetriNetUnfolderBase]: For 536693/536693 co-relation queries the response was YES. [2024-06-27 17:58:09,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60900 conditions, 7566 events. 4162/7566 cut-off events. For 536693/536693 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 56415 event pairs, 1020 based on Foata normal form. 8/7334 useless extension candidates. Maximal degree in co-relation 60640. Up to 5755 conditions per place. [2024-06-27 17:58:09,746 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 593 selfloop transitions, 130 changer transitions 0/729 dead transitions. [2024-06-27 17:58:09,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 729 transitions, 16321 flow [2024-06-27 17:58:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:58:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:58:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 17:58:09,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-27 17:58:09,748 INFO L175 Difference]: Start difference. First operand has 543 places, 668 transitions, 14095 flow. Second operand 11 states and 201 transitions. [2024-06-27 17:58:09,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 729 transitions, 16321 flow [2024-06-27 17:58:14,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 729 transitions, 15879 flow, removed 94 selfloop flow, removed 9 redundant places. [2024-06-27 17:58:14,082 INFO L231 Difference]: Finished difference. Result has 545 places, 669 transitions, 14064 flow [2024-06-27 17:58:14,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13653, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14064, PETRI_PLACES=545, PETRI_TRANSITIONS=669} [2024-06-27 17:58:14,082 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 503 predicate places. [2024-06-27 17:58:14,082 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 669 transitions, 14064 flow [2024-06-27 17:58:14,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:58:14,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:58:14,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:58:14,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 17:58:14,083 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:58:14,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:58:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1687205275, now seen corresponding path program 9 times [2024-06-27 17:58:14,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:58:14,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082545334] [2024-06-27 17:58:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:58:14,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:58:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:58:15,875 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 17:58:15,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:58:15,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082545334] [2024-06-27 17:58:15,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082545334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:58:15,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:58:15,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 17:58:15,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906849047] [2024-06-27 17:58:15,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:58:15,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:58:15,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:58:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:58:15,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:58:15,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:58:15,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 669 transitions, 14064 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:58:15,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:58:15,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:58:15,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:58:19,223 INFO L124 PetriNetUnfolderBase]: 4192/7626 cut-off events. [2024-06-27 17:58:19,223 INFO L125 PetriNetUnfolderBase]: For 499390/499390 co-relation queries the response was YES. [2024-06-27 17:58:19,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61415 conditions, 7626 events. 4192/7626 cut-off events. For 499390/499390 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 57082 event pairs, 1053 based on Foata normal form. 2/7386 useless extension candidates. Maximal degree in co-relation 61154. Up to 5681 conditions per place. [2024-06-27 17:58:19,368 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 584 selfloop transitions, 139 changer transitions 0/729 dead transitions. [2024-06-27 17:58:19,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 729 transitions, 16247 flow [2024-06-27 17:58:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:58:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:58:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 17:58:19,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 17:58:19,369 INFO L175 Difference]: Start difference. First operand has 545 places, 669 transitions, 14064 flow. Second operand 11 states and 196 transitions. [2024-06-27 17:58:19,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 729 transitions, 16247 flow [2024-06-27 17:58:24,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 729 transitions, 15888 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-27 17:58:24,156 INFO L231 Difference]: Finished difference. Result has 548 places, 674 transitions, 14317 flow [2024-06-27 17:58:24,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13705, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14317, PETRI_PLACES=548, PETRI_TRANSITIONS=674} [2024-06-27 17:58:24,157 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 506 predicate places. [2024-06-27 17:58:24,157 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 674 transitions, 14317 flow [2024-06-27 17:58:24,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:58:24,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:58:24,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:58:24,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 17:58:24,158 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:58:24,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:58:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1834553943, now seen corresponding path program 2 times [2024-06-27 17:58:24,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:58:24,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396403481] [2024-06-27 17:58:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:58:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:58:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:58:26,106 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 17:58:26,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:58:26,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396403481] [2024-06-27 17:58:26,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396403481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:58:26,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:58:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 17:58:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788997535] [2024-06-27 17:58:26,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:58:26,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:58:26,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:58:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:58:26,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:58:26,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:58:26,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 674 transitions, 14317 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:58:26,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:58:26,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:58:26,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:58:29,810 INFO L124 PetriNetUnfolderBase]: 4273/7771 cut-off events. [2024-06-27 17:58:29,810 INFO L125 PetriNetUnfolderBase]: For 591977/591977 co-relation queries the response was YES. [2024-06-27 17:58:29,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62651 conditions, 7771 events. 4273/7771 cut-off events. For 591977/591977 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 58342 event pairs, 1105 based on Foata normal form. 10/7541 useless extension candidates. Maximal degree in co-relation 62388. Up to 5937 conditions per place. [2024-06-27 17:58:29,961 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 602 selfloop transitions, 132 changer transitions 0/740 dead transitions. [2024-06-27 17:58:29,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 740 transitions, 16564 flow [2024-06-27 17:58:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:58:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:58:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-06-27 17:58:29,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758771929824561 [2024-06-27 17:58:29,962 INFO L175 Difference]: Start difference. First operand has 548 places, 674 transitions, 14317 flow. Second operand 12 states and 217 transitions. [2024-06-27 17:58:29,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 740 transitions, 16564 flow [2024-06-27 17:58:34,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 740 transitions, 16095 flow, removed 145 selfloop flow, removed 6 redundant places. [2024-06-27 17:58:34,764 INFO L231 Difference]: Finished difference. Result has 555 places, 676 transitions, 14280 flow [2024-06-27 17:58:34,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13848, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14280, PETRI_PLACES=555, PETRI_TRANSITIONS=676} [2024-06-27 17:58:34,765 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 513 predicate places. [2024-06-27 17:58:34,765 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 676 transitions, 14280 flow [2024-06-27 17:58:34,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:58:34,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:58:34,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:58:34,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 17:58:34,765 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 17:58:34,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:58:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2108175793, now seen corresponding path program 10 times [2024-06-27 17:58:34,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:58:34,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419489951] [2024-06-27 17:58:34,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:58:34,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:58:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:58:36,061 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 17:58:36,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:58:36,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419489951] [2024-06-27 17:58:36,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419489951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:58:36,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:58:36,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 17:58:36,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441369210] [2024-06-27 17:58:36,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:58:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:58:36,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:58:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:58:36,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:58:36,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-27 17:58:36,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 676 transitions, 14280 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 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 17:58:36,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:58:36,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-27 17:58:36,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:58:39,435 INFO L124 PetriNetUnfolderBase]: 4292/7810 cut-off events. [2024-06-27 17:58:39,435 INFO L125 PetriNetUnfolderBase]: For 527219/527219 co-relation queries the response was YES. [2024-06-27 17:58:39,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63029 conditions, 7810 events. 4292/7810 cut-off events. For 527219/527219 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 58678 event pairs, 1111 based on Foata normal form. 2/7570 useless extension candidates. Maximal degree in co-relation 62763. Up to 6139 conditions per place.