./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_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.2024-05-07_14-17-48.files/protection/rfi007_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 b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-07_14-17-48.files/protection/rfi007_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-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:30:45,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:30:45,851 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:30:45,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:30:45,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:30:45,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:30:45,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:30:45,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:30:45,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:30:45,883 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:30:45,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:30:45,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:30:45,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:30:45,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:30:45,886 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:30:45,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:30:45,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:30:45,887 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:30:45,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:30:45,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:30:45,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:30:45,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:30:45,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:30:45,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:30:45,889 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:30:45,889 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:30:45,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:30:45,889 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:30:45,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:30:45,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:30:45,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:30:45,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:30:45,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:30:45,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:30:45,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:30:45,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:30:45,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:30:45,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:30:45,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:30:45,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:30:45,893 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:30:45,893 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:30:45,893 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:30:45,893 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:30:46,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:30:46,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:30:46,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:30:46,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:30:46,125 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:30:46,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:30:47,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:30:47,486 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:30:47,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:30:47,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d9a2c03/b86988d47c7741fea6b4b46c505e6f86/FLAGbed346733 [2024-05-12 13:30:47,512 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d9a2c03/b86988d47c7741fea6b4b46c505e6f86 [2024-05-12 13:30:47,514 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:30:47,514 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:30:47,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-05-12 13:30:47,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:30:47,632 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:30:47,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:30:47,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:30:47,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:30:47,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:30:47" (1/2) ... [2024-05-12 13:30:47,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e359bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:30:47, skipping insertion in model container [2024-05-12 13:30:47,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:30:47" (1/2) ... [2024-05-12 13:30:47,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f422c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:30:47, skipping insertion in model container [2024-05-12 13:30:47,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:30:47" (2/2) ... [2024-05-12 13:30:47,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e359bba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:47, skipping insertion in model container [2024-05-12 13:30:47,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:30:47" (2/2) ... [2024-05-12 13:30:47,642 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:30:47,687 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:30:47,688 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1))) [2024-05-12 13:30:47,688 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1))) [2024-05-12 13:30:47,688 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:30:47,689 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-05-12 13:30:47,726 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:30:47,836 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[995,1008] [2024-05-12 13:30:48,012 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:30:48,022 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:30:48,065 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:30:48,160 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:30:48,201 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:30:48,203 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48 WrapperNode [2024-05-12 13:30:48,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:30:48,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:30:48,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:30:48,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:30:48,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,275 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2024-05-12 13:30:48,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:30:48,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:30:48,277 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:30:48,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:30:48,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,309 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 13:30:48,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,335 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:30:48,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:30:48,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:30:48,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:30:48,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (1/1) ... [2024-05-12 13:30:48,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:30:48,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:30:48,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 13:30:48,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 13:30:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:30:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:30:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:30:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:30:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:30:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:30:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:30:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:30:48,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:30:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:30:48,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:30:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:30:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:30:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:30:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:30:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:30:48,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:30:48,429 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:30:48,546 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:30:48,549 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:30:48,793 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:30:48,793 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:30:48,929 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:30:48,929 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:30:48,930 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:30:48 BoogieIcfgContainer [2024-05-12 13:30:48,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:30:48,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:30:48,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:30:48,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:30:48,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:30:47" (1/4) ... [2024-05-12 13:30:48,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458c2ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:30:48, skipping insertion in model container [2024-05-12 13:30:48,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:30:47" (2/4) ... [2024-05-12 13:30:48,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458c2ad5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:30:48, skipping insertion in model container [2024-05-12 13:30:48,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:48" (3/4) ... [2024-05-12 13:30:48,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458c2ad5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:30:48, skipping insertion in model container [2024-05-12 13:30:48,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:30:48" (4/4) ... [2024-05-12 13:30:48,941 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:30:48,954 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:30:48,954 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 13:30:48,954 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:30:48,997 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:30:49,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-05-12 13:30:49,061 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-05-12 13:30:49,064 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:30:49,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-05-12 13:30:49,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-05-12 13:30:49,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-05-12 13:30:49,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:30:49,091 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;@7b4ba73d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:30:49,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 13:30:49,096 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:30:49,096 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:30:49,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:30:49,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:49,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:30:49,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:49,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1097637477, now seen corresponding path program 1 times [2024-05-12 13:30:49,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:49,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981616194] [2024-05-12 13:30:49,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:49,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:49,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:49,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981616194] [2024-05-12 13:30:49,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981616194] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:49,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:49,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:30:49,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368487640] [2024-05-12 13:30:49,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:49,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:30:49,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:30:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:30:50,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-05-12 13:30:50,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:50,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:50,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-05-12 13:30:50,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:50,274 INFO L124 PetriNetUnfolderBase]: 475/959 cut-off events. [2024-05-12 13:30:50,274 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-05-12 13:30:50,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 959 events. 475/959 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5383 event pairs, 334 based on Foata normal form. 36/897 useless extension candidates. Maximal degree in co-relation 1763. Up to 787 conditions per place. [2024-05-12 13:30:50,283 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 32 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-05-12 13:30:50,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 171 flow [2024-05-12 13:30:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:30:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:30:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-05-12 13:30:50,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6576576576576577 [2024-05-12 13:30:50,294 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 73 transitions. [2024-05-12 13:30:50,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 171 flow [2024-05-12 13:30:50,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:30:50,298 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-05-12 13:30:50,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-05-12 13:30:50,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-05-12 13:30:50,302 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-05-12 13:30:50,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:50,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:50,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:30:50,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:30:50,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:50,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1097638344, now seen corresponding path program 1 times [2024-05-12 13:30:50,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:50,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751686046] [2024-05-12 13:30:50,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:50,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:50,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:50,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751686046] [2024-05-12 13:30:50,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751686046] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:50,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:50,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:30:50,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475670724] [2024-05-12 13:30:50,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:50,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:30:50,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:50,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:30:50,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:30:50,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-05-12 13:30:50,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:50,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:50,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-05-12 13:30:50,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:50,474 INFO L124 PetriNetUnfolderBase]: 169/400 cut-off events. [2024-05-12 13:30:50,475 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-05-12 13:30:50,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 400 events. 169/400 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2112 event pairs, 96 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 756. Up to 256 conditions per place. [2024-05-12 13:30:50,476 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 25 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2024-05-12 13:30:50,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 175 flow [2024-05-12 13:30:50,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:30:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:30:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-05-12 13:30:50,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2024-05-12 13:30:50,479 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 3 states and 81 transitions. [2024-05-12 13:30:50,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 175 flow [2024-05-12 13:30:50,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:30:50,483 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 92 flow [2024-05-12 13:30:50,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-05-12 13:30:50,486 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-05-12 13:30:50,486 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 92 flow [2024-05-12 13:30:50,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:50,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:50,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:50,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:30:50,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:50,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1732301853, now seen corresponding path program 1 times [2024-05-12 13:30:50,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:50,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315034686] [2024-05-12 13:30:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:50,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:50,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:50,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315034686] [2024-05-12 13:30:50,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315034686] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:50,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:50,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:30:50,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060448973] [2024-05-12 13:30:50,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:50,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:30:50,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:51,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:30:51,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:30:51,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-05-12 13:30:51,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:51,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:51,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-05-12 13:30:51,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:51,141 INFO L124 PetriNetUnfolderBase]: 342/705 cut-off events. [2024-05-12 13:30:51,141 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-05-12 13:30:51,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 705 events. 342/705 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3684 event pairs, 164 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 1442. Up to 562 conditions per place. [2024-05-12 13:30:51,144 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 36 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-05-12 13:30:51,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 222 flow [2024-05-12 13:30:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:30:51,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:30:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-05-12 13:30:51,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-05-12 13:30:51,146 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 92 flow. Second operand 4 states and 86 transitions. [2024-05-12 13:30:51,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 222 flow [2024-05-12 13:30:51,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:30:51,147 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 135 flow [2024-05-12 13:30:51,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-05-12 13:30:51,148 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-05-12 13:30:51,148 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 135 flow [2024-05-12 13:30:51,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:51,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:51,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:51,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:30:51,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:51,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2133218670, now seen corresponding path program 1 times [2024-05-12 13:30:51,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:51,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498094281] [2024-05-12 13:30:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:51,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:51,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:51,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498094281] [2024-05-12 13:30:51,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498094281] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:51,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:51,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:30:51,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197744008] [2024-05-12 13:30:51,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:51,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:30:51,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:30:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:30:51,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:30:51,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:51,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:51,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:30:51,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:51,760 INFO L124 PetriNetUnfolderBase]: 418/832 cut-off events. [2024-05-12 13:30:51,760 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2024-05-12 13:30:51,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 832 events. 418/832 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4425 event pairs, 147 based on Foata normal form. 3/797 useless extension candidates. Maximal degree in co-relation 1865. Up to 629 conditions per place. [2024-05-12 13:30:51,766 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 48 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-05-12 13:30:51,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 345 flow [2024-05-12 13:30:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:30:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:30:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-05-12 13:30:51,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5837837837837838 [2024-05-12 13:30:51,768 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 135 flow. Second operand 5 states and 108 transitions. [2024-05-12 13:30:51,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 345 flow [2024-05-12 13:30:51,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 338 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 13:30:51,771 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 216 flow [2024-05-12 13:30:51,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-05-12 13:30:51,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-05-12 13:30:51,772 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 216 flow [2024-05-12 13:30:51,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:51,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:51,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:51,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:30:51,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:51,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1705270626, now seen corresponding path program 1 times [2024-05-12 13:30:51,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:51,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663979485] [2024-05-12 13:30:51,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:51,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:52,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:52,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663979485] [2024-05-12 13:30:52,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663979485] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:52,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:52,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:30:52,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506339335] [2024-05-12 13:30:52,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:52,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:30:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:30:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:30:52,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:30:52,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:52,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:52,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:30:52,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:52,627 INFO L124 PetriNetUnfolderBase]: 428/842 cut-off events. [2024-05-12 13:30:52,628 INFO L125 PetriNetUnfolderBase]: For 812/812 co-relation queries the response was YES. [2024-05-12 13:30:52,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 842 events. 428/842 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4480 event pairs, 108 based on Foata normal form. 3/809 useless extension candidates. Maximal degree in co-relation 2249. Up to 620 conditions per place. [2024-05-12 13:30:52,632 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 55 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-05-12 13:30:52,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 460 flow [2024-05-12 13:30:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:30:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:30:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-05-12 13:30:52,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765765765765766 [2024-05-12 13:30:52,633 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 216 flow. Second operand 6 states and 128 transitions. [2024-05-12 13:30:52,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 460 flow [2024-05-12 13:30:52,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 79 transitions, 456 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 13:30:52,636 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 272 flow [2024-05-12 13:30:52,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-05-12 13:30:52,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-05-12 13:30:52,637 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 272 flow [2024-05-12 13:30:52,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:52,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:52,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:52,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:30:52,637 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:52,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:52,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1256408285, now seen corresponding path program 1 times [2024-05-12 13:30:52,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:52,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912670076] [2024-05-12 13:30:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:52,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:53,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912670076] [2024-05-12 13:30:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912670076] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:53,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:53,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:30:53,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999729455] [2024-05-12 13:30:53,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:53,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:30:53,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:53,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:30:53,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:30:53,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:30:53,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:53,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:53,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:30:53,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:53,635 INFO L124 PetriNetUnfolderBase]: 444/795 cut-off events. [2024-05-12 13:30:53,636 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2024-05-12 13:30:53,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 795 events. 444/795 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3999 event pairs, 39 based on Foata normal form. 6/790 useless extension candidates. Maximal degree in co-relation 2479. Up to 565 conditions per place. [2024-05-12 13:30:53,640 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 61 selfloop transitions, 28 changer transitions 0/97 dead transitions. [2024-05-12 13:30:53,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 632 flow [2024-05-12 13:30:53,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-05-12 13:30:53,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555984555984556 [2024-05-12 13:30:53,642 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 272 flow. Second operand 7 states and 144 transitions. [2024-05-12 13:30:53,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 632 flow [2024-05-12 13:30:53,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 97 transitions, 596 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:30:53,646 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 412 flow [2024-05-12 13:30:53,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-05-12 13:30:53,646 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-05-12 13:30:53,647 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 412 flow [2024-05-12 13:30:53,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:53,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:53,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:53,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:30:53,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:53,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:53,648 INFO L85 PathProgramCache]: Analyzing trace with hash 536142295, now seen corresponding path program 1 times [2024-05-12 13:30:53,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:53,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279585172] [2024-05-12 13:30:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:53,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:54,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:54,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279585172] [2024-05-12 13:30:54,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279585172] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:54,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:54,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:30:54,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905864420] [2024-05-12 13:30:54,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:54,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:30:54,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:54,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:30:54,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:30:54,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:30:54,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:54,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:54,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:30:54,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:54,325 INFO L124 PetriNetUnfolderBase]: 520/1036 cut-off events. [2024-05-12 13:30:54,326 INFO L125 PetriNetUnfolderBase]: For 1994/1994 co-relation queries the response was YES. [2024-05-12 13:30:54,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3348 conditions, 1036 events. 520/1036 cut-off events. For 1994/1994 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5660 event pairs, 157 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 3319. Up to 848 conditions per place. [2024-05-12 13:30:54,332 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 57 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2024-05-12 13:30:54,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 570 flow [2024-05-12 13:30:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:30:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:30:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-05-12 13:30:54,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-05-12 13:30:54,333 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 412 flow. Second operand 5 states and 87 transitions. [2024-05-12 13:30:54,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 570 flow [2024-05-12 13:30:54,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 534 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-05-12 13:30:54,338 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 404 flow [2024-05-12 13:30:54,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=404, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-05-12 13:30:54,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-05-12 13:30:54,339 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 404 flow [2024-05-12 13:30:54,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:54,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:54,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:54,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:30:54,340 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:54,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:54,340 INFO L85 PathProgramCache]: Analyzing trace with hash -560004808, now seen corresponding path program 1 times [2024-05-12 13:30:54,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:54,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631007435] [2024-05-12 13:30:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:54,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:54,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:54,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631007435] [2024-05-12 13:30:54,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631007435] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:54,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:54,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:30:54,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069532371] [2024-05-12 13:30:54,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:54,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:30:54,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:54,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:30:54,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:30:54,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:30:54,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 404 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:54,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:54,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:30:54,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:55,142 INFO L124 PetriNetUnfolderBase]: 514/987 cut-off events. [2024-05-12 13:30:55,143 INFO L125 PetriNetUnfolderBase]: For 1908/1908 co-relation queries the response was YES. [2024-05-12 13:30:55,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3156 conditions, 987 events. 514/987 cut-off events. For 1908/1908 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5238 event pairs, 152 based on Foata normal form. 3/958 useless extension candidates. Maximal degree in co-relation 3123. Up to 806 conditions per place. [2024-05-12 13:30:55,149 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 64 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-05-12 13:30:55,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 608 flow [2024-05-12 13:30:55,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:30:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:30:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-05-12 13:30:55,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-05-12 13:30:55,151 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 404 flow. Second operand 6 states and 105 transitions. [2024-05-12 13:30:55,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 608 flow [2024-05-12 13:30:55,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 583 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 13:30:55,156 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 423 flow [2024-05-12 13:30:55,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=423, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-05-12 13:30:55,158 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-05-12 13:30:55,159 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 423 flow [2024-05-12 13:30:55,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:55,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:55,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:55,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:30:55,159 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:55,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash -685625549, now seen corresponding path program 1 times [2024-05-12 13:30:55,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:55,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103858873] [2024-05-12 13:30:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:55,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:55,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:55,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103858873] [2024-05-12 13:30:55,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103858873] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:55,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:55,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:30:55,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698770765] [2024-05-12 13:30:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:55,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:30:55,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:30:55,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:30:55,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:30:55,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 423 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:55,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:55,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:30:55,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:55,975 INFO L124 PetriNetUnfolderBase]: 523/995 cut-off events. [2024-05-12 13:30:55,976 INFO L125 PetriNetUnfolderBase]: For 2056/2056 co-relation queries the response was YES. [2024-05-12 13:30:55,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3348 conditions, 995 events. 523/995 cut-off events. For 2056/2056 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5243 event pairs, 118 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 3315. Up to 777 conditions per place. [2024-05-12 13:30:55,982 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 65 selfloop transitions, 15 changer transitions 0/87 dead transitions. [2024-05-12 13:30:55,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 668 flow [2024-05-12 13:30:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:30:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:30:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-05-12 13:30:55,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-05-12 13:30:55,983 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 423 flow. Second operand 6 states and 110 transitions. [2024-05-12 13:30:55,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 668 flow [2024-05-12 13:30:55,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 644 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 13:30:55,988 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 457 flow [2024-05-12 13:30:55,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=457, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-05-12 13:30:55,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-05-12 13:30:55,989 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 457 flow [2024-05-12 13:30:55,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:55,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:55,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:55,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:30:55,990 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:55,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:55,990 INFO L85 PathProgramCache]: Analyzing trace with hash -974163303, now seen corresponding path program 2 times [2024-05-12 13:30:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:55,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535970249] [2024-05-12 13:30:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:55,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:56,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:56,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535970249] [2024-05-12 13:30:56,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535970249] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:56,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:56,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:30:56,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168284699] [2024-05-12 13:30:56,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:56,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:30:56,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:56,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:30:56,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:30:56,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:30:56,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 457 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:56,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:56,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:30:56,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:56,773 INFO L124 PetriNetUnfolderBase]: 518/1012 cut-off events. [2024-05-12 13:30:56,774 INFO L125 PetriNetUnfolderBase]: For 2269/2269 co-relation queries the response was YES. [2024-05-12 13:30:56,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1012 events. 518/1012 cut-off events. For 2269/2269 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5447 event pairs, 157 based on Foata normal form. 1/976 useless extension candidates. Maximal degree in co-relation 3348. Up to 840 conditions per place. [2024-05-12 13:30:56,780 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 64 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-05-12 13:30:56,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 639 flow [2024-05-12 13:30:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:30:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:30:56,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-05-12 13:30:56,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-05-12 13:30:56,781 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 457 flow. Second operand 6 states and 101 transitions. [2024-05-12 13:30:56,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 639 flow [2024-05-12 13:30:56,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 612 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 13:30:56,788 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 455 flow [2024-05-12 13:30:56,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-05-12 13:30:56,789 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-05-12 13:30:56,789 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 455 flow [2024-05-12 13:30:56,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:56,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:56,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:56,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:30:56,790 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:56,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash -996512192, now seen corresponding path program 1 times [2024-05-12 13:30:56,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:56,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480320066] [2024-05-12 13:30:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:56,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:57,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:57,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480320066] [2024-05-12 13:30:57,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480320066] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:57,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:57,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:57,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481437209] [2024-05-12 13:30:57,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:57,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:57,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:57,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:57,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:30:57,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 455 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) [2024-05-12 13:30:57,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:57,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:30:57,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:57,708 INFO L124 PetriNetUnfolderBase]: 642/1183 cut-off events. [2024-05-12 13:30:57,708 INFO L125 PetriNetUnfolderBase]: For 2956/2956 co-relation queries the response was YES. [2024-05-12 13:30:57,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3938 conditions, 1183 events. 642/1183 cut-off events. For 2956/2956 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6351 event pairs, 145 based on Foata normal form. 6/1154 useless extension candidates. Maximal degree in co-relation 3903. Up to 769 conditions per place. [2024-05-12 13:30:57,714 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 78 selfloop transitions, 20 changer transitions 0/105 dead transitions. [2024-05-12 13:30:57,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 105 transitions, 785 flow [2024-05-12 13:30:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-05-12 13:30:57,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-05-12 13:30:57,715 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 455 flow. Second operand 7 states and 133 transitions. [2024-05-12 13:30:57,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 105 transitions, 785 flow [2024-05-12 13:30:57,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 743 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 13:30:57,720 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 515 flow [2024-05-12 13:30:57,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-05-12 13:30:57,721 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-05-12 13:30:57,721 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 515 flow [2024-05-12 13:30:57,721 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) [2024-05-12 13:30:57,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:57,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:57,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:30:57,722 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:57,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:57,722 INFO L85 PathProgramCache]: Analyzing trace with hash -767278352, now seen corresponding path program 2 times [2024-05-12 13:30:57,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:57,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026468112] [2024-05-12 13:30:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:57,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:58,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026468112] [2024-05-12 13:30:58,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026468112] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:58,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:58,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:58,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155963728] [2024-05-12 13:30:58,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:58,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:58,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:58,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:58,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:30:58,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 515 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) [2024-05-12 13:30:58,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:58,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:30:58,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:58,659 INFO L124 PetriNetUnfolderBase]: 675/1307 cut-off events. [2024-05-12 13:30:58,659 INFO L125 PetriNetUnfolderBase]: For 3715/3715 co-relation queries the response was YES. [2024-05-12 13:30:58,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 1307 events. 675/1307 cut-off events. For 3715/3715 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7413 event pairs, 195 based on Foata normal form. 3/1260 useless extension candidates. Maximal degree in co-relation 4584. Up to 1054 conditions per place. [2024-05-12 13:30:58,666 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 76 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-05-12 13:30:58,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 755 flow [2024-05-12 13:30:58,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-05-12 13:30:58,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2024-05-12 13:30:58,668 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 515 flow. Second operand 7 states and 118 transitions. [2024-05-12 13:30:58,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 755 flow [2024-05-12 13:30:58,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 740 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 13:30:58,674 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 549 flow [2024-05-12 13:30:58,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=549, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2024-05-12 13:30:58,674 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-05-12 13:30:58,675 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 549 flow [2024-05-12 13:30:58,675 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) [2024-05-12 13:30:58,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:58,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:58,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:30:58,676 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:58,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:58,676 INFO L85 PathProgramCache]: Analyzing trace with hash -151271190, now seen corresponding path program 3 times [2024-05-12 13:30:58,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:58,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940013691] [2024-05-12 13:30:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:58,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:59,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:59,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940013691] [2024-05-12 13:30:59,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940013691] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:59,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:59,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990792562] [2024-05-12 13:30:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:59,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:59,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:59,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:59,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:30:59,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 549 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) [2024-05-12 13:30:59,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:59,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:30:59,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:59,513 INFO L124 PetriNetUnfolderBase]: 669/1278 cut-off events. [2024-05-12 13:30:59,514 INFO L125 PetriNetUnfolderBase]: For 4060/4060 co-relation queries the response was YES. [2024-05-12 13:30:59,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4635 conditions, 1278 events. 669/1278 cut-off events. For 4060/4060 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7149 event pairs, 187 based on Foata normal form. 3/1236 useless extension candidates. Maximal degree in co-relation 4596. Up to 1003 conditions per place. [2024-05-12 13:30:59,521 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 79 selfloop transitions, 16 changer transitions 0/102 dead transitions. [2024-05-12 13:30:59,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 102 transitions, 821 flow [2024-05-12 13:30:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:59,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-05-12 13:30:59,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-05-12 13:30:59,523 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 549 flow. Second operand 7 states and 123 transitions. [2024-05-12 13:30:59,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 102 transitions, 821 flow [2024-05-12 13:30:59,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 102 transitions, 780 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-05-12 13:30:59,529 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 567 flow [2024-05-12 13:30:59,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=567, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2024-05-12 13:30:59,530 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-05-12 13:30:59,530 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 567 flow [2024-05-12 13:30:59,530 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) [2024-05-12 13:30:59,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:59,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:59,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:30:59,530 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:59,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1177983320, now seen corresponding path program 1 times [2024-05-12 13:30:59,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:59,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186479708] [2024-05-12 13:30:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:59,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:00,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:00,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186479708] [2024-05-12 13:31:00,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186479708] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:00,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:00,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:00,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861304021] [2024-05-12 13:31:00,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:00,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:00,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:00,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:00,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:00,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:00,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 567 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-05-12 13:31:00,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:00,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:00,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:00,609 INFO L124 PetriNetUnfolderBase]: 680/1200 cut-off events. [2024-05-12 13:31:00,610 INFO L125 PetriNetUnfolderBase]: For 4319/4319 co-relation queries the response was YES. [2024-05-12 13:31:00,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 1200 events. 680/1200 cut-off events. For 4319/4319 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6287 event pairs, 108 based on Foata normal form. 1/1180 useless extension candidates. Maximal degree in co-relation 4628. Up to 936 conditions per place. [2024-05-12 13:31:00,624 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 78 selfloop transitions, 27 changer transitions 0/112 dead transitions. [2024-05-12 13:31:00,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 112 transitions, 907 flow [2024-05-12 13:31:00,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-05-12 13:31:00,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-05-12 13:31:00,626 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 567 flow. Second operand 7 states and 130 transitions. [2024-05-12 13:31:00,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 112 transitions, 907 flow [2024-05-12 13:31:00,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 112 transitions, 866 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:00,634 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 614 flow [2024-05-12 13:31:00,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=614, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-05-12 13:31:00,635 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-05-12 13:31:00,635 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 614 flow [2024-05-12 13:31:00,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-05-12 13:31:00,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:00,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:00,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:31:00,636 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:00,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1178073530, now seen corresponding path program 2 times [2024-05-12 13:31:00,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:00,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451118958] [2024-05-12 13:31:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:00,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:01,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:01,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451118958] [2024-05-12 13:31:01,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451118958] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:01,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:01,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:01,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100414570] [2024-05-12 13:31:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:01,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:01,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:01,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:01,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-05-12 13:31:01,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:01,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:01,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:01,660 INFO L124 PetriNetUnfolderBase]: 681/1266 cut-off events. [2024-05-12 13:31:01,660 INFO L125 PetriNetUnfolderBase]: For 4616/4616 co-relation queries the response was YES. [2024-05-12 13:31:01,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4796 conditions, 1266 events. 681/1266 cut-off events. For 4616/4616 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7015 event pairs, 146 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 4756. Up to 1011 conditions per place. [2024-05-12 13:31:01,666 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 85 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2024-05-12 13:31:01,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 109 transitions, 904 flow [2024-05-12 13:31:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-05-12 13:31:01,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826254826254826 [2024-05-12 13:31:01,667 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 614 flow. Second operand 7 states and 125 transitions. [2024-05-12 13:31:01,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 109 transitions, 904 flow [2024-05-12 13:31:01,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 109 transitions, 872 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:01,675 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 641 flow [2024-05-12 13:31:01,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=641, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2024-05-12 13:31:01,676 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-05-12 13:31:01,676 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 641 flow [2024-05-12 13:31:01,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-05-12 13:31:01,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:01,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:01,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:31:01,677 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:01,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:01,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1181792755, now seen corresponding path program 1 times [2024-05-12 13:31:01,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:01,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345308757] [2024-05-12 13:31:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:01,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:02,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345308757] [2024-05-12 13:31:02,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345308757] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:02,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:02,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:02,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239188620] [2024-05-12 13:31:02,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:02,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:02,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:02,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:02,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 641 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-05-12 13:31:02,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:02,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:02,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:02,602 INFO L124 PetriNetUnfolderBase]: 876/1629 cut-off events. [2024-05-12 13:31:02,602 INFO L125 PetriNetUnfolderBase]: For 6485/6485 co-relation queries the response was YES. [2024-05-12 13:31:02,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6259 conditions, 1629 events. 876/1629 cut-off events. For 6485/6485 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9535 event pairs, 347 based on Foata normal form. 3/1582 useless extension candidates. Maximal degree in co-relation 6217. Up to 1076 conditions per place. [2024-05-12 13:31:02,614 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 95 selfloop transitions, 29 changer transitions 0/131 dead transitions. [2024-05-12 13:31:02,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 131 transitions, 1169 flow [2024-05-12 13:31:02,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-05-12 13:31:02,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-05-12 13:31:02,615 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 641 flow. Second operand 8 states and 144 transitions. [2024-05-12 13:31:02,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 131 transitions, 1169 flow [2024-05-12 13:31:02,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 131 transitions, 1115 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:02,624 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 848 flow [2024-05-12 13:31:02,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=848, PETRI_PLACES=94, PETRI_TRANSITIONS=100} [2024-05-12 13:31:02,625 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-05-12 13:31:02,625 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 848 flow [2024-05-12 13:31:02,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-05-12 13:31:02,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:02,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:02,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:31:02,625 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:02,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:02,625 INFO L85 PathProgramCache]: Analyzing trace with hash 899482505, now seen corresponding path program 2 times [2024-05-12 13:31:02,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:02,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805952233] [2024-05-12 13:31:02,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:02,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805952233] [2024-05-12 13:31:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805952233] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170982402] [2024-05-12 13:31:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:03,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:03,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 100 transitions, 848 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-05-12 13:31:03,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:03,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:03,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:03,616 INFO L124 PetriNetUnfolderBase]: 1145/2217 cut-off events. [2024-05-12 13:31:03,616 INFO L125 PetriNetUnfolderBase]: For 9881/9881 co-relation queries the response was YES. [2024-05-12 13:31:03,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8959 conditions, 2217 events. 1145/2217 cut-off events. For 9881/9881 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14440 event pairs, 223 based on Foata normal form. 3/2127 useless extension candidates. Maximal degree in co-relation 8913. Up to 1257 conditions per place. [2024-05-12 13:31:03,630 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 124 selfloop transitions, 57 changer transitions 0/188 dead transitions. [2024-05-12 13:31:03,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 188 transitions, 1970 flow [2024-05-12 13:31:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-05-12 13:31:03,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-05-12 13:31:03,631 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 848 flow. Second operand 8 states and 156 transitions. [2024-05-12 13:31:03,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 188 transitions, 1970 flow [2024-05-12 13:31:03,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 188 transitions, 1942 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-05-12 13:31:03,649 INFO L231 Difference]: Finished difference. Result has 104 places, 138 transitions, 1466 flow [2024-05-12 13:31:03,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1466, PETRI_PLACES=104, PETRI_TRANSITIONS=138} [2024-05-12 13:31:03,649 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 63 predicate places. [2024-05-12 13:31:03,649 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 138 transitions, 1466 flow [2024-05-12 13:31:03,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-05-12 13:31:03,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:03,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:03,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:31:03,650 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:03,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1161637183, now seen corresponding path program 3 times [2024-05-12 13:31:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:03,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322091608] [2024-05-12 13:31:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:03,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:04,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:04,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322091608] [2024-05-12 13:31:04,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322091608] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:04,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:04,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:04,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632161180] [2024-05-12 13:31:04,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:04,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:04,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:04,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:04,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:04,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 138 transitions, 1466 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:31:04,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:04,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:04,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:04,873 INFO L124 PetriNetUnfolderBase]: 1216/2255 cut-off events. [2024-05-12 13:31:04,874 INFO L125 PetriNetUnfolderBase]: For 12902/12902 co-relation queries the response was YES. [2024-05-12 13:31:04,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10774 conditions, 2255 events. 1216/2255 cut-off events. For 12902/12902 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 14254 event pairs, 235 based on Foata normal form. 3/2184 useless extension candidates. Maximal degree in co-relation 10722. Up to 1293 conditions per place. [2024-05-12 13:31:04,887 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 133 selfloop transitions, 59 changer transitions 0/199 dead transitions. [2024-05-12 13:31:04,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 199 transitions, 2333 flow [2024-05-12 13:31:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-05-12 13:31:04,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2024-05-12 13:31:04,891 INFO L175 Difference]: Start difference. First operand has 104 places, 138 transitions, 1466 flow. Second operand 9 states and 170 transitions. [2024-05-12 13:31:04,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 199 transitions, 2333 flow [2024-05-12 13:31:04,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 199 transitions, 2230 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:04,920 INFO L231 Difference]: Finished difference. Result has 113 places, 148 transitions, 1685 flow [2024-05-12 13:31:04,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1685, PETRI_PLACES=113, PETRI_TRANSITIONS=148} [2024-05-12 13:31:04,920 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-05-12 13:31:04,920 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 148 transitions, 1685 flow [2024-05-12 13:31:04,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:31:04,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:04,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:04,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:31:04,921 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:04,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:04,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1181798335, now seen corresponding path program 4 times [2024-05-12 13:31:04,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:04,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782086289] [2024-05-12 13:31:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:04,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:05,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782086289] [2024-05-12 13:31:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782086289] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:05,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:05,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:05,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256887394] [2024-05-12 13:31:05,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:05,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:05,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:05,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:05,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:05,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:05,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 148 transitions, 1685 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:31:05,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:05,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:05,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:06,264 INFO L124 PetriNetUnfolderBase]: 1291/2374 cut-off events. [2024-05-12 13:31:06,264 INFO L125 PetriNetUnfolderBase]: For 14802/14802 co-relation queries the response was YES. [2024-05-12 13:31:06,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12114 conditions, 2374 events. 1291/2374 cut-off events. For 14802/14802 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 15091 event pairs, 449 based on Foata normal form. 3/2306 useless extension candidates. Maximal degree in co-relation 12057. Up to 1345 conditions per place. [2024-05-12 13:31:06,281 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 124 selfloop transitions, 66 changer transitions 0/197 dead transitions. [2024-05-12 13:31:06,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 197 transitions, 2400 flow [2024-05-12 13:31:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-05-12 13:31:06,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-05-12 13:31:06,283 INFO L175 Difference]: Start difference. First operand has 113 places, 148 transitions, 1685 flow. Second operand 9 states and 159 transitions. [2024-05-12 13:31:06,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 197 transitions, 2400 flow [2024-05-12 13:31:06,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 197 transitions, 2310 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:06,316 INFO L231 Difference]: Finished difference. Result has 120 places, 157 transitions, 1924 flow [2024-05-12 13:31:06,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1924, PETRI_PLACES=120, PETRI_TRANSITIONS=157} [2024-05-12 13:31:06,317 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-05-12 13:31:06,317 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 157 transitions, 1924 flow [2024-05-12 13:31:06,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:31:06,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:06,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:06,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:31:06,318 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:06,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:06,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1975930299, now seen corresponding path program 5 times [2024-05-12 13:31:06,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:06,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546442822] [2024-05-12 13:31:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:06,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:07,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:07,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546442822] [2024-05-12 13:31:07,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546442822] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:07,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:07,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:07,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022685794] [2024-05-12 13:31:07,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:07,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:07,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:07,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:07,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:07,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:07,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 157 transitions, 1924 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:31:07,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:07,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:07,681 INFO L124 PetriNetUnfolderBase]: 1366/2575 cut-off events. [2024-05-12 13:31:07,681 INFO L125 PetriNetUnfolderBase]: For 18058/18058 co-relation queries the response was YES. [2024-05-12 13:31:07,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13377 conditions, 2575 events. 1366/2575 cut-off events. For 18058/18058 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17099 event pairs, 519 based on Foata normal form. 3/2480 useless extension candidates. Maximal degree in co-relation 13317. Up to 1960 conditions per place. [2024-05-12 13:31:07,697 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 166 selfloop transitions, 29 changer transitions 0/202 dead transitions. [2024-05-12 13:31:07,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 202 transitions, 2582 flow [2024-05-12 13:31:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-05-12 13:31:07,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-05-12 13:31:07,699 INFO L175 Difference]: Start difference. First operand has 120 places, 157 transitions, 1924 flow. Second operand 8 states and 141 transitions. [2024-05-12 13:31:07,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 202 transitions, 2582 flow [2024-05-12 13:31:07,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 202 transitions, 2460 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:07,729 INFO L231 Difference]: Finished difference. Result has 122 places, 164 transitions, 1993 flow [2024-05-12 13:31:07,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1993, PETRI_PLACES=122, PETRI_TRANSITIONS=164} [2024-05-12 13:31:07,729 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-05-12 13:31:07,729 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 164 transitions, 1993 flow [2024-05-12 13:31:07,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:31:07,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:07,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:07,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:31:07,730 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:07,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:07,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1449242546, now seen corresponding path program 1 times [2024-05-12 13:31:07,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:07,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296528250] [2024-05-12 13:31:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:07,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:08,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:08,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296528250] [2024-05-12 13:31:08,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296528250] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:08,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:08,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:08,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991431146] [2024-05-12 13:31:08,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:08,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:08,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:08,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:08,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:08,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 164 transitions, 1993 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:31:08,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:08,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:08,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:08,939 INFO L124 PetriNetUnfolderBase]: 1368/2567 cut-off events. [2024-05-12 13:31:08,939 INFO L125 PetriNetUnfolderBase]: For 17968/17968 co-relation queries the response was YES. [2024-05-12 13:31:08,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13139 conditions, 2567 events. 1368/2567 cut-off events. For 17968/17968 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 16914 event pairs, 561 based on Foata normal form. 2/2472 useless extension candidates. Maximal degree in co-relation 13078. Up to 2131 conditions per place. [2024-05-12 13:31:08,957 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 166 selfloop transitions, 17 changer transitions 0/190 dead transitions. [2024-05-12 13:31:08,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 190 transitions, 2461 flow [2024-05-12 13:31:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-05-12 13:31:08,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-05-12 13:31:08,958 INFO L175 Difference]: Start difference. First operand has 122 places, 164 transitions, 1993 flow. Second operand 8 states and 133 transitions. [2024-05-12 13:31:08,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 190 transitions, 2461 flow [2024-05-12 13:31:08,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 190 transitions, 2394 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:08,987 INFO L231 Difference]: Finished difference. Result has 125 places, 169 transitions, 2019 flow [2024-05-12 13:31:08,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2019, PETRI_PLACES=125, PETRI_TRANSITIONS=169} [2024-05-12 13:31:08,988 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-05-12 13:31:08,988 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 169 transitions, 2019 flow [2024-05-12 13:31:08,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:31:08,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:08,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:08,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:31:08,988 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:08,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:08,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1449538503, now seen corresponding path program 6 times [2024-05-12 13:31:08,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:08,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470499358] [2024-05-12 13:31:08,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:08,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:09,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:09,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470499358] [2024-05-12 13:31:09,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470499358] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:09,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:09,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:09,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684282118] [2024-05-12 13:31:09,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:09,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:09,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:09,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:09,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 169 transitions, 2019 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:31:09,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:09,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:09,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:10,244 INFO L124 PetriNetUnfolderBase]: 1362/2572 cut-off events. [2024-05-12 13:31:10,244 INFO L125 PetriNetUnfolderBase]: For 17957/17957 co-relation queries the response was YES. [2024-05-12 13:31:10,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13128 conditions, 2572 events. 1362/2572 cut-off events. For 17957/17957 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17108 event pairs, 547 based on Foata normal form. 3/2475 useless extension candidates. Maximal degree in co-relation 13065. Up to 2021 conditions per place. [2024-05-12 13:31:10,259 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 170 selfloop transitions, 23 changer transitions 0/200 dead transitions. [2024-05-12 13:31:10,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 200 transitions, 2531 flow [2024-05-12 13:31:10,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:10,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-05-12 13:31:10,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-05-12 13:31:10,260 INFO L175 Difference]: Start difference. First operand has 125 places, 169 transitions, 2019 flow. Second operand 8 states and 136 transitions. [2024-05-12 13:31:10,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 200 transitions, 2531 flow [2024-05-12 13:31:10,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 200 transitions, 2470 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:10,297 INFO L231 Difference]: Finished difference. Result has 128 places, 169 transitions, 2015 flow [2024-05-12 13:31:10,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2015, PETRI_PLACES=128, PETRI_TRANSITIONS=169} [2024-05-12 13:31:10,297 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 87 predicate places. [2024-05-12 13:31:10,297 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 169 transitions, 2015 flow [2024-05-12 13:31:10,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 13:31:10,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:10,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:10,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:31:10,298 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:10,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash 335117747, now seen corresponding path program 1 times [2024-05-12 13:31:10,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:10,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551869193] [2024-05-12 13:31:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:10,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:11,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551869193] [2024-05-12 13:31:11,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551869193] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:11,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:11,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:11,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614067293] [2024-05-12 13:31:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:11,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:11,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 169 transitions, 2015 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) [2024-05-12 13:31:11,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:11,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:11,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:11,926 INFO L124 PetriNetUnfolderBase]: 1359/2561 cut-off events. [2024-05-12 13:31:11,926 INFO L125 PetriNetUnfolderBase]: For 18337/18337 co-relation queries the response was YES. [2024-05-12 13:31:11,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13100 conditions, 2561 events. 1359/2561 cut-off events. For 18337/18337 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 16937 event pairs, 555 based on Foata normal form. 2/2463 useless extension candidates. Maximal degree in co-relation 13036. Up to 2101 conditions per place. [2024-05-12 13:31:11,942 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 169 selfloop transitions, 20 changer transitions 0/196 dead transitions. [2024-05-12 13:31:11,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 196 transitions, 2481 flow [2024-05-12 13:31:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-05-12 13:31:11,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-05-12 13:31:11,944 INFO L175 Difference]: Start difference. First operand has 128 places, 169 transitions, 2015 flow. Second operand 8 states and 135 transitions. [2024-05-12 13:31:11,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 196 transitions, 2481 flow [2024-05-12 13:31:11,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 196 transitions, 2418 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:11,979 INFO L231 Difference]: Finished difference. Result has 131 places, 171 transitions, 2021 flow [2024-05-12 13:31:11,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2021, PETRI_PLACES=131, PETRI_TRANSITIONS=171} [2024-05-12 13:31:11,980 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-05-12 13:31:11,980 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 171 transitions, 2021 flow [2024-05-12 13:31:11,980 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) [2024-05-12 13:31:11,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:11,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:11,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:31:11,980 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:11,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:11,981 INFO L85 PathProgramCache]: Analyzing trace with hash 985530551, now seen corresponding path program 1 times [2024-05-12 13:31:11,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:11,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011505805] [2024-05-12 13:31:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:11,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:12,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:12,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011505805] [2024-05-12 13:31:12,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011505805] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:12,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:12,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:12,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641373779] [2024-05-12 13:31:12,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:12,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:12,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:12,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:12,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:12,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 171 transitions, 2021 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:12,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:12,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:12,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:13,230 INFO L124 PetriNetUnfolderBase]: 1472/2784 cut-off events. [2024-05-12 13:31:13,230 INFO L125 PetriNetUnfolderBase]: For 19494/19494 co-relation queries the response was YES. [2024-05-12 13:31:13,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13952 conditions, 2784 events. 1472/2784 cut-off events. For 19494/19494 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18847 event pairs, 339 based on Foata normal form. 2/2670 useless extension candidates. Maximal degree in co-relation 13886. Up to 1988 conditions per place. [2024-05-12 13:31:13,248 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 182 selfloop transitions, 41 changer transitions 0/230 dead transitions. [2024-05-12 13:31:13,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 230 transitions, 2896 flow [2024-05-12 13:31:13,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:13,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:13,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-05-12 13:31:13,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-05-12 13:31:13,249 INFO L175 Difference]: Start difference. First operand has 131 places, 171 transitions, 2021 flow. Second operand 9 states and 163 transitions. [2024-05-12 13:31:13,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 230 transitions, 2896 flow [2024-05-12 13:31:13,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 230 transitions, 2845 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:13,285 INFO L231 Difference]: Finished difference. Result has 137 places, 189 transitions, 2277 flow [2024-05-12 13:31:13,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2277, PETRI_PLACES=137, PETRI_TRANSITIONS=189} [2024-05-12 13:31:13,286 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-05-12 13:31:13,286 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 189 transitions, 2277 flow [2024-05-12 13:31:13,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:13,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:13,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:13,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:31:13,287 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:13,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:13,287 INFO L85 PathProgramCache]: Analyzing trace with hash 555706871, now seen corresponding path program 2 times [2024-05-12 13:31:13,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:13,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366144076] [2024-05-12 13:31:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:13,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:14,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:14,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366144076] [2024-05-12 13:31:14,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366144076] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:14,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:14,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:14,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315617084] [2024-05-12 13:31:14,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:14,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:14,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:14,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:14,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:14,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:14,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 189 transitions, 2277 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:14,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:14,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:14,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:14,772 INFO L124 PetriNetUnfolderBase]: 1486/2797 cut-off events. [2024-05-12 13:31:14,773 INFO L125 PetriNetUnfolderBase]: For 20507/20507 co-relation queries the response was YES. [2024-05-12 13:31:14,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14424 conditions, 2797 events. 1486/2797 cut-off events. For 20507/20507 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18957 event pairs, 340 based on Foata normal form. 2/2685 useless extension candidates. Maximal degree in co-relation 14355. Up to 2088 conditions per place. [2024-05-12 13:31:14,793 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 179 selfloop transitions, 49 changer transitions 0/235 dead transitions. [2024-05-12 13:31:14,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 235 transitions, 3000 flow [2024-05-12 13:31:14,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-05-12 13:31:14,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-05-12 13:31:14,795 INFO L175 Difference]: Start difference. First operand has 137 places, 189 transitions, 2277 flow. Second operand 10 states and 177 transitions. [2024-05-12 13:31:14,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 235 transitions, 3000 flow [2024-05-12 13:31:14,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 235 transitions, 2973 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:14,846 INFO L231 Difference]: Finished difference. Result has 146 places, 193 transitions, 2407 flow [2024-05-12 13:31:14,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2407, PETRI_PLACES=146, PETRI_TRANSITIONS=193} [2024-05-12 13:31:14,847 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 105 predicate places. [2024-05-12 13:31:14,847 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 193 transitions, 2407 flow [2024-05-12 13:31:14,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:14,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:14,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:14,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:31:14,848 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:14,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash 555706995, now seen corresponding path program 1 times [2024-05-12 13:31:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:14,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138625593] [2024-05-12 13:31:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:14,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:15,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:15,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138625593] [2024-05-12 13:31:15,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138625593] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:15,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:15,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:15,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501257416] [2024-05-12 13:31:15,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:15,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:15,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:15,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:15,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:15,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:15,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 193 transitions, 2407 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:15,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:15,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:15,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:16,220 INFO L124 PetriNetUnfolderBase]: 1558/2893 cut-off events. [2024-05-12 13:31:16,220 INFO L125 PetriNetUnfolderBase]: For 23685/23685 co-relation queries the response was YES. [2024-05-12 13:31:16,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15159 conditions, 2893 events. 1558/2893 cut-off events. For 23685/23685 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19443 event pairs, 353 based on Foata normal form. 3/2802 useless extension candidates. Maximal degree in co-relation 15087. Up to 1435 conditions per place. [2024-05-12 13:31:16,242 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 162 selfloop transitions, 86 changer transitions 0/255 dead transitions. [2024-05-12 13:31:16,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 255 transitions, 3304 flow [2024-05-12 13:31:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:31:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:31:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-05-12 13:31:16,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085995085995086 [2024-05-12 13:31:16,243 INFO L175 Difference]: Start difference. First operand has 146 places, 193 transitions, 2407 flow. Second operand 11 states and 207 transitions. [2024-05-12 13:31:16,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 255 transitions, 3304 flow [2024-05-12 13:31:16,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 255 transitions, 3213 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:16,299 INFO L231 Difference]: Finished difference. Result has 151 places, 199 transitions, 2572 flow [2024-05-12 13:31:16,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2572, PETRI_PLACES=151, PETRI_TRANSITIONS=199} [2024-05-12 13:31:16,300 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-05-12 13:31:16,300 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 199 transitions, 2572 flow [2024-05-12 13:31:16,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:16,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:16,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:16,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:31:16,301 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:16,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:16,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2043737127, now seen corresponding path program 3 times [2024-05-12 13:31:16,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:16,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67115782] [2024-05-12 13:31:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:16,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:16,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67115782] [2024-05-12 13:31:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67115782] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:16,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:16,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:16,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573409519] [2024-05-12 13:31:16,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:16,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:16,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:16,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:16,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:16,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 199 transitions, 2572 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:16,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:16,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:16,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:17,420 INFO L124 PetriNetUnfolderBase]: 1661/3037 cut-off events. [2024-05-12 13:31:17,420 INFO L125 PetriNetUnfolderBase]: For 28181/28181 co-relation queries the response was YES. [2024-05-12 13:31:17,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16667 conditions, 3037 events. 1661/3037 cut-off events. For 28181/28181 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20520 event pairs, 274 based on Foata normal form. 2/2953 useless extension candidates. Maximal degree in co-relation 16593. Up to 1958 conditions per place. [2024-05-12 13:31:17,442 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 176 selfloop transitions, 59 changer transitions 0/242 dead transitions. [2024-05-12 13:31:17,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 242 transitions, 3288 flow [2024-05-12 13:31:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-05-12 13:31:17,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-05-12 13:31:17,444 INFO L175 Difference]: Start difference. First operand has 151 places, 199 transitions, 2572 flow. Second operand 8 states and 144 transitions. [2024-05-12 13:31:17,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 242 transitions, 3288 flow [2024-05-12 13:31:17,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 242 transitions, 3172 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:17,508 INFO L231 Difference]: Finished difference. Result has 154 places, 210 transitions, 2692 flow [2024-05-12 13:31:17,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2692, PETRI_PLACES=154, PETRI_TRANSITIONS=210} [2024-05-12 13:31:17,508 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-05-12 13:31:17,508 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 210 transitions, 2692 flow [2024-05-12 13:31:17,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:17,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:17,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:17,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:31:17,509 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:17,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:17,510 INFO L85 PathProgramCache]: Analyzing trace with hash -4194275, now seen corresponding path program 4 times [2024-05-12 13:31:17,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:17,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515566852] [2024-05-12 13:31:17,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:17,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:18,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:18,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515566852] [2024-05-12 13:31:18,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515566852] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:18,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:18,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:18,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949780023] [2024-05-12 13:31:18,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:18,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:18,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:18,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:18,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 210 transitions, 2692 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:18,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:18,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:18,689 INFO L124 PetriNetUnfolderBase]: 1800/3335 cut-off events. [2024-05-12 13:31:18,689 INFO L125 PetriNetUnfolderBase]: For 30285/30285 co-relation queries the response was YES. [2024-05-12 13:31:18,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18474 conditions, 3335 events. 1800/3335 cut-off events. For 30285/30285 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 23273 event pairs, 351 based on Foata normal form. 2/3239 useless extension candidates. Maximal degree in co-relation 18396. Up to 2202 conditions per place. [2024-05-12 13:31:18,715 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 181 selfloop transitions, 70 changer transitions 0/258 dead transitions. [2024-05-12 13:31:18,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 258 transitions, 3559 flow [2024-05-12 13:31:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-05-12 13:31:18,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-05-12 13:31:18,717 INFO L175 Difference]: Start difference. First operand has 154 places, 210 transitions, 2692 flow. Second operand 8 states and 149 transitions. [2024-05-12 13:31:18,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 258 transitions, 3559 flow [2024-05-12 13:31:18,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 258 transitions, 3424 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:18,796 INFO L231 Difference]: Finished difference. Result has 160 places, 225 transitions, 2938 flow [2024-05-12 13:31:18,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2938, PETRI_PLACES=160, PETRI_TRANSITIONS=225} [2024-05-12 13:31:18,797 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-05-12 13:31:18,797 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 225 transitions, 2938 flow [2024-05-12 13:31:18,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:18,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:18,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:18,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:31:18,798 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:18,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash -450811469, now seen corresponding path program 5 times [2024-05-12 13:31:18,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:18,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027024099] [2024-05-12 13:31:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:18,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:19,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:19,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027024099] [2024-05-12 13:31:19,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027024099] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:19,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:19,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:19,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271140213] [2024-05-12 13:31:19,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:19,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:19,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:19,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:19,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:19,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:19,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 225 transitions, 2938 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:19,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:19,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:19,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:20,092 INFO L124 PetriNetUnfolderBase]: 1814/3351 cut-off events. [2024-05-12 13:31:20,093 INFO L125 PetriNetUnfolderBase]: For 31220/31220 co-relation queries the response was YES. [2024-05-12 13:31:20,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18932 conditions, 3351 events. 1814/3351 cut-off events. For 31220/31220 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 23296 event pairs, 365 based on Foata normal form. 2/3257 useless extension candidates. Maximal degree in co-relation 18851. Up to 2474 conditions per place. [2024-05-12 13:31:20,115 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 183 selfloop transitions, 68 changer transitions 0/258 dead transitions. [2024-05-12 13:31:20,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 258 transitions, 3614 flow [2024-05-12 13:31:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-05-12 13:31:20,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:31:20,116 INFO L175 Difference]: Start difference. First operand has 160 places, 225 transitions, 2938 flow. Second operand 8 states and 148 transitions. [2024-05-12 13:31:20,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 258 transitions, 3614 flow [2024-05-12 13:31:20,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 258 transitions, 3566 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:20,190 INFO L231 Difference]: Finished difference. Result has 165 places, 229 transitions, 3114 flow [2024-05-12 13:31:20,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2892, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3114, PETRI_PLACES=165, PETRI_TRANSITIONS=229} [2024-05-12 13:31:20,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-05-12 13:31:20,191 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 229 transitions, 3114 flow [2024-05-12 13:31:20,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:20,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:20,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:20,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:31:20,192 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:20,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash -4133701, now seen corresponding path program 2 times [2024-05-12 13:31:20,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:20,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647462550] [2024-05-12 13:31:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:20,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:20,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:20,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647462550] [2024-05-12 13:31:20,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647462550] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:20,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:20,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:20,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904722244] [2024-05-12 13:31:20,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:20,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:20,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:20,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:20,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:20,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:20,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 229 transitions, 3114 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:20,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:20,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:20,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:21,424 INFO L124 PetriNetUnfolderBase]: 1832/3420 cut-off events. [2024-05-12 13:31:21,425 INFO L125 PetriNetUnfolderBase]: For 32701/32701 co-relation queries the response was YES. [2024-05-12 13:31:21,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19520 conditions, 3420 events. 1832/3420 cut-off events. For 32701/32701 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 24133 event pairs, 310 based on Foata normal form. 1/3323 useless extension candidates. Maximal degree in co-relation 19438. Up to 2149 conditions per place. [2024-05-12 13:31:21,449 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 232 selfloop transitions, 58 changer transitions 0/297 dead transitions. [2024-05-12 13:31:21,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 297 transitions, 4409 flow [2024-05-12 13:31:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-05-12 13:31:21,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-05-12 13:31:21,452 INFO L175 Difference]: Start difference. First operand has 165 places, 229 transitions, 3114 flow. Second operand 8 states and 155 transitions. [2024-05-12 13:31:21,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 297 transitions, 4409 flow [2024-05-12 13:31:21,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 297 transitions, 4294 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:21,534 INFO L231 Difference]: Finished difference. Result has 170 places, 240 transitions, 3303 flow [2024-05-12 13:31:21,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3303, PETRI_PLACES=170, PETRI_TRANSITIONS=240} [2024-05-12 13:31:21,535 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-05-12 13:31:21,535 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 240 transitions, 3303 flow [2024-05-12 13:31:21,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:21,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:21,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:21,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:31:21,536 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:21,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:21,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2126662295, now seen corresponding path program 3 times [2024-05-12 13:31:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:21,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369067025] [2024-05-12 13:31:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:21,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:22,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:22,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369067025] [2024-05-12 13:31:22,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369067025] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:22,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:22,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:22,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846496433] [2024-05-12 13:31:22,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:22,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:22,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:22,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:22,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 240 transitions, 3303 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:22,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:22,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:22,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:23,113 INFO L124 PetriNetUnfolderBase]: 1905/3739 cut-off events. [2024-05-12 13:31:23,113 INFO L125 PetriNetUnfolderBase]: For 37538/37538 co-relation queries the response was YES. [2024-05-12 13:31:23,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21188 conditions, 3739 events. 1905/3739 cut-off events. For 37538/37538 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27921 event pairs, 447 based on Foata normal form. 3/3587 useless extension candidates. Maximal degree in co-relation 21103. Up to 2180 conditions per place. [2024-05-12 13:31:23,141 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 210 selfloop transitions, 89 changer transitions 0/306 dead transitions. [2024-05-12 13:31:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 306 transitions, 4482 flow [2024-05-12 13:31:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-05-12 13:31:23,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243243243243243 [2024-05-12 13:31:23,144 INFO L175 Difference]: Start difference. First operand has 170 places, 240 transitions, 3303 flow. Second operand 10 states and 194 transitions. [2024-05-12 13:31:23,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 306 transitions, 4482 flow [2024-05-12 13:31:23,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 306 transitions, 4403 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:23,229 INFO L231 Difference]: Finished difference. Result has 177 places, 251 transitions, 3613 flow [2024-05-12 13:31:23,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3247, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3613, PETRI_PLACES=177, PETRI_TRANSITIONS=251} [2024-05-12 13:31:23,230 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-05-12 13:31:23,230 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 251 transitions, 3613 flow [2024-05-12 13:31:23,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:23,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:23,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:23,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:31:23,231 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:23,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2114327705, now seen corresponding path program 4 times [2024-05-12 13:31:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:23,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547584967] [2024-05-12 13:31:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:23,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:23,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:23,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547584967] [2024-05-12 13:31:23,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547584967] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:23,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:23,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:23,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130312577] [2024-05-12 13:31:23,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:23,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:24,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:24,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 251 transitions, 3613 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) [2024-05-12 13:31:24,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:24,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:24,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:25,042 INFO L124 PetriNetUnfolderBase]: 1920/3707 cut-off events. [2024-05-12 13:31:25,042 INFO L125 PetriNetUnfolderBase]: For 37675/37675 co-relation queries the response was YES. [2024-05-12 13:31:25,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21674 conditions, 3707 events. 1920/3707 cut-off events. For 37675/37675 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27236 event pairs, 455 based on Foata normal form. 3/3567 useless extension candidates. Maximal degree in co-relation 21587. Up to 2333 conditions per place. [2024-05-12 13:31:25,068 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 219 selfloop transitions, 79 changer transitions 0/305 dead transitions. [2024-05-12 13:31:25,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 305 transitions, 4591 flow [2024-05-12 13:31:25,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-05-12 13:31:25,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-05-12 13:31:25,072 INFO L175 Difference]: Start difference. First operand has 177 places, 251 transitions, 3613 flow. Second operand 10 states and 187 transitions. [2024-05-12 13:31:25,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 305 transitions, 4591 flow [2024-05-12 13:31:25,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 305 transitions, 4497 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:25,174 INFO L231 Difference]: Finished difference. Result has 182 places, 255 transitions, 3753 flow [2024-05-12 13:31:25,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3753, PETRI_PLACES=182, PETRI_TRANSITIONS=255} [2024-05-12 13:31:25,175 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-05-12 13:31:25,176 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 255 transitions, 3753 flow [2024-05-12 13:31:25,176 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) [2024-05-12 13:31:25,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:25,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:25,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:31:25,176 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:25,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1276391705, now seen corresponding path program 6 times [2024-05-12 13:31:25,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:25,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832604733] [2024-05-12 13:31:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:25,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:25,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:25,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832604733] [2024-05-12 13:31:25,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832604733] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:25,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:25,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:25,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744567610] [2024-05-12 13:31:25,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:25,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:25,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:25,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:25,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:25,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:25,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 255 transitions, 3753 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:25,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:25,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:25,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:26,585 INFO L124 PetriNetUnfolderBase]: 1961/3796 cut-off events. [2024-05-12 13:31:26,586 INFO L125 PetriNetUnfolderBase]: For 39804/39804 co-relation queries the response was YES. [2024-05-12 13:31:26,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22408 conditions, 3796 events. 1961/3796 cut-off events. For 39804/39804 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 28065 event pairs, 356 based on Foata normal form. 2/3648 useless extension candidates. Maximal degree in co-relation 22319. Up to 2269 conditions per place. [2024-05-12 13:31:26,621 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 203 selfloop transitions, 85 changer transitions 0/295 dead transitions. [2024-05-12 13:31:26,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 295 transitions, 4614 flow [2024-05-12 13:31:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 13:31:26,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-05-12 13:31:26,623 INFO L175 Difference]: Start difference. First operand has 182 places, 255 transitions, 3753 flow. Second operand 8 states and 146 transitions. [2024-05-12 13:31:26,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 295 transitions, 4614 flow [2024-05-12 13:31:26,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 295 transitions, 4454 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-05-12 13:31:26,733 INFO L231 Difference]: Finished difference. Result has 184 places, 262 transitions, 3934 flow [2024-05-12 13:31:26,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3593, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3934, PETRI_PLACES=184, PETRI_TRANSITIONS=262} [2024-05-12 13:31:26,733 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-05-12 13:31:26,733 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 262 transitions, 3934 flow [2024-05-12 13:31:26,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:26,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:26,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:26,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:31:26,734 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:26,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash -693683719, now seen corresponding path program 7 times [2024-05-12 13:31:26,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:26,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571812652] [2024-05-12 13:31:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:26,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:27,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:27,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571812652] [2024-05-12 13:31:27,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571812652] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:27,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:27,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:27,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774765938] [2024-05-12 13:31:27,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:27,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:27,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:27,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:27,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:27,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:27,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 262 transitions, 3934 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:27,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:27,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:27,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:28,196 INFO L124 PetriNetUnfolderBase]: 1958/3886 cut-off events. [2024-05-12 13:31:28,197 INFO L125 PetriNetUnfolderBase]: For 40965/40965 co-relation queries the response was YES. [2024-05-12 13:31:28,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22916 conditions, 3886 events. 1958/3886 cut-off events. For 40965/40965 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 29434 event pairs, 477 based on Foata normal form. 2/3714 useless extension candidates. Maximal degree in co-relation 22824. Up to 2659 conditions per place. [2024-05-12 13:31:28,229 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 212 selfloop transitions, 81 changer transitions 0/300 dead transitions. [2024-05-12 13:31:28,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 300 transitions, 4724 flow [2024-05-12 13:31:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 13:31:28,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-05-12 13:31:28,230 INFO L175 Difference]: Start difference. First operand has 184 places, 262 transitions, 3934 flow. Second operand 9 states and 161 transitions. [2024-05-12 13:31:28,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 300 transitions, 4724 flow [2024-05-12 13:31:28,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 300 transitions, 4657 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:28,346 INFO L231 Difference]: Finished difference. Result has 189 places, 262 transitions, 4047 flow [2024-05-12 13:31:28,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3867, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4047, PETRI_PLACES=189, PETRI_TRANSITIONS=262} [2024-05-12 13:31:28,347 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-05-12 13:31:28,347 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 262 transitions, 4047 flow [2024-05-12 13:31:28,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:28,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:28,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:28,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:31:28,348 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:28,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:28,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1276452279, now seen corresponding path program 5 times [2024-05-12 13:31:28,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:28,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693598655] [2024-05-12 13:31:28,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:28,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:28,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:28,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693598655] [2024-05-12 13:31:28,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693598655] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:28,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:28,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:28,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404718138] [2024-05-12 13:31:28,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:28,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:28,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:28,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:28,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:29,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:29,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 262 transitions, 4047 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:29,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:29,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:29,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:29,694 INFO L124 PetriNetUnfolderBase]: 2016/3902 cut-off events. [2024-05-12 13:31:29,694 INFO L125 PetriNetUnfolderBase]: For 42010/42010 co-relation queries the response was YES. [2024-05-12 13:31:29,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23807 conditions, 3902 events. 2016/3902 cut-off events. For 42010/42010 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 28977 event pairs, 550 based on Foata normal form. 1/3752 useless extension candidates. Maximal degree in co-relation 23714. Up to 1636 conditions per place. [2024-05-12 13:31:29,727 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 179 selfloop transitions, 123 changer transitions 0/309 dead transitions. [2024-05-12 13:31:29,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 309 transitions, 5012 flow [2024-05-12 13:31:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-05-12 13:31:29,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-05-12 13:31:29,752 INFO L175 Difference]: Start difference. First operand has 189 places, 262 transitions, 4047 flow. Second operand 8 states and 152 transitions. [2024-05-12 13:31:29,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 309 transitions, 5012 flow [2024-05-12 13:31:29,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 309 transitions, 4839 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:29,875 INFO L231 Difference]: Finished difference. Result has 191 places, 274 transitions, 4354 flow [2024-05-12 13:31:29,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3878, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4354, PETRI_PLACES=191, PETRI_TRANSITIONS=274} [2024-05-12 13:31:29,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-05-12 13:31:29,876 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 274 transitions, 4354 flow [2024-05-12 13:31:29,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:29,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:29,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:29,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:31:29,876 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:29,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1279253439, now seen corresponding path program 6 times [2024-05-12 13:31:29,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:29,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483187202] [2024-05-12 13:31:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:29,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:30,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:30,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483187202] [2024-05-12 13:31:30,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483187202] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:30,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:30,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:30,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384960576] [2024-05-12 13:31:30,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:30,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:30,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:30,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:30,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:30,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:30,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 274 transitions, 4354 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:30,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:30,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:30,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:31,284 INFO L124 PetriNetUnfolderBase]: 2088/4050 cut-off events. [2024-05-12 13:31:31,285 INFO L125 PetriNetUnfolderBase]: For 48583/48583 co-relation queries the response was YES. [2024-05-12 13:31:31,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25447 conditions, 4050 events. 2088/4050 cut-off events. For 48583/48583 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 30277 event pairs, 521 based on Foata normal form. 3/3893 useless extension candidates. Maximal degree in co-relation 25352. Up to 2274 conditions per place. [2024-05-12 13:31:31,318 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 212 selfloop transitions, 106 changer transitions 0/325 dead transitions. [2024-05-12 13:31:31,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 325 transitions, 5409 flow [2024-05-12 13:31:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-05-12 13:31:31,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-05-12 13:31:31,319 INFO L175 Difference]: Start difference. First operand has 191 places, 274 transitions, 4354 flow. Second operand 8 states and 150 transitions. [2024-05-12 13:31:31,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 325 transitions, 5409 flow [2024-05-12 13:31:31,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 325 transitions, 5355 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:31,454 INFO L231 Difference]: Finished difference. Result has 196 places, 286 transitions, 4727 flow [2024-05-12 13:31:31,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4304, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4727, PETRI_PLACES=196, PETRI_TRANSITIONS=286} [2024-05-12 13:31:31,454 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-05-12 13:31:31,454 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 286 transitions, 4727 flow [2024-05-12 13:31:31,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:31,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:31,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:31,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:31:31,455 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:31,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1279248789, now seen corresponding path program 7 times [2024-05-12 13:31:31,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:31,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225401585] [2024-05-12 13:31:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:32,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:32,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225401585] [2024-05-12 13:31:32,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225401585] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:32,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:32,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:32,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717179902] [2024-05-12 13:31:32,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:32,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:32,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:32,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:32,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:32,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 286 transitions, 4727 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:32,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:32,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:32,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:32,890 INFO L124 PetriNetUnfolderBase]: 2113/4092 cut-off events. [2024-05-12 13:31:32,890 INFO L125 PetriNetUnfolderBase]: For 53072/53072 co-relation queries the response was YES. [2024-05-12 13:31:32,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26581 conditions, 4092 events. 2113/4092 cut-off events. For 53072/53072 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 30675 event pairs, 515 based on Foata normal form. 1/3933 useless extension candidates. Maximal degree in co-relation 26484. Up to 2241 conditions per place. [2024-05-12 13:31:32,925 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 208 selfloop transitions, 122 changer transitions 0/337 dead transitions. [2024-05-12 13:31:32,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 337 transitions, 5776 flow [2024-05-12 13:31:32,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:32,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-05-12 13:31:32,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-05-12 13:31:32,927 INFO L175 Difference]: Start difference. First operand has 196 places, 286 transitions, 4727 flow. Second operand 9 states and 166 transitions. [2024-05-12 13:31:32,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 337 transitions, 5776 flow [2024-05-12 13:31:33,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 337 transitions, 5551 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:33,094 INFO L231 Difference]: Finished difference. Result has 199 places, 292 transitions, 4893 flow [2024-05-12 13:31:33,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4502, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4893, PETRI_PLACES=199, PETRI_TRANSITIONS=292} [2024-05-12 13:31:33,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-05-12 13:31:33,095 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 292 transitions, 4893 flow [2024-05-12 13:31:33,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:33,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:33,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:33,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:31:33,096 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:33,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2019134063, now seen corresponding path program 8 times [2024-05-12 13:31:33,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:33,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840790775] [2024-05-12 13:31:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:33,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:33,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840790775] [2024-05-12 13:31:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840790775] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:33,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:33,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25336423] [2024-05-12 13:31:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:33,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:33,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:33,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:33,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 292 transitions, 4893 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:33,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:33,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:33,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:34,661 INFO L124 PetriNetUnfolderBase]: 2138/4184 cut-off events. [2024-05-12 13:31:34,661 INFO L125 PetriNetUnfolderBase]: For 53178/53178 co-relation queries the response was YES. [2024-05-12 13:31:34,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27221 conditions, 4184 events. 2138/4184 cut-off events. For 53178/53178 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 31646 event pairs, 447 based on Foata normal form. 1/4001 useless extension candidates. Maximal degree in co-relation 27123. Up to 2803 conditions per place. [2024-05-12 13:31:34,699 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 256 selfloop transitions, 114 changer transitions 0/377 dead transitions. [2024-05-12 13:31:34,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 377 transitions, 6684 flow [2024-05-12 13:31:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-05-12 13:31:34,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-05-12 13:31:34,700 INFO L175 Difference]: Start difference. First operand has 199 places, 292 transitions, 4893 flow. Second operand 9 states and 169 transitions. [2024-05-12 13:31:34,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 377 transitions, 6684 flow [2024-05-12 13:31:34,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 377 transitions, 6430 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:34,874 INFO L231 Difference]: Finished difference. Result has 205 places, 330 transitions, 5735 flow [2024-05-12 13:31:34,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4677, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5735, PETRI_PLACES=205, PETRI_TRANSITIONS=330} [2024-05-12 13:31:34,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-05-12 13:31:34,875 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 330 transitions, 5735 flow [2024-05-12 13:31:34,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:34,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:34,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:34,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:31:34,875 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:34,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:34,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2018956433, now seen corresponding path program 9 times [2024-05-12 13:31:34,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:34,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889691672] [2024-05-12 13:31:34,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:34,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:35,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:35,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889691672] [2024-05-12 13:31:35,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889691672] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:35,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:35,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:35,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436715142] [2024-05-12 13:31:35,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:35,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:35,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:35,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:35,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:35,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:35,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 330 transitions, 5735 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) [2024-05-12 13:31:35,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:35,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:35,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:36,731 INFO L124 PetriNetUnfolderBase]: 2220/4245 cut-off events. [2024-05-12 13:31:36,732 INFO L125 PetriNetUnfolderBase]: For 59198/59198 co-relation queries the response was YES. [2024-05-12 13:31:36,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28804 conditions, 4245 events. 2220/4245 cut-off events. For 59198/59198 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 31639 event pairs, 482 based on Foata normal form. 3/4091 useless extension candidates. Maximal degree in co-relation 28702. Up to 2455 conditions per place. [2024-05-12 13:31:36,773 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 255 selfloop transitions, 131 changer transitions 0/393 dead transitions. [2024-05-12 13:31:36,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 393 transitions, 7107 flow [2024-05-12 13:31:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-05-12 13:31:36,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-05-12 13:31:36,775 INFO L175 Difference]: Start difference. First operand has 205 places, 330 transitions, 5735 flow. Second operand 9 states and 168 transitions. [2024-05-12 13:31:36,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 393 transitions, 7107 flow [2024-05-12 13:31:36,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 393 transitions, 7014 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:36,976 INFO L231 Difference]: Finished difference. Result has 212 places, 344 transitions, 6239 flow [2024-05-12 13:31:36,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5658, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6239, PETRI_PLACES=212, PETRI_TRANSITIONS=344} [2024-05-12 13:31:36,977 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-05-12 13:31:36,977 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 344 transitions, 6239 flow [2024-05-12 13:31:36,977 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) [2024-05-12 13:31:36,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:36,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:36,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:31:36,978 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:36,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash -203952529, now seen corresponding path program 10 times [2024-05-12 13:31:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:36,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967054565] [2024-05-12 13:31:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:36,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:37,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967054565] [2024-05-12 13:31:37,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967054565] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:37,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:37,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:37,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864213946] [2024-05-12 13:31:37,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:37,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:37,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:37,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:37,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 344 transitions, 6239 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) [2024-05-12 13:31:37,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:37,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:37,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:38,688 INFO L124 PetriNetUnfolderBase]: 2267/4374 cut-off events. [2024-05-12 13:31:38,688 INFO L125 PetriNetUnfolderBase]: For 66863/66863 co-relation queries the response was YES. [2024-05-12 13:31:38,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30329 conditions, 4374 events. 2267/4374 cut-off events. For 66863/66863 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 33198 event pairs, 832 based on Foata normal form. 1/4213 useless extension candidates. Maximal degree in co-relation 30225. Up to 3532 conditions per place. [2024-05-12 13:31:38,728 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 346 selfloop transitions, 53 changer transitions 0/406 dead transitions. [2024-05-12 13:31:38,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 406 transitions, 7687 flow [2024-05-12 13:31:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-05-12 13:31:38,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-05-12 13:31:38,729 INFO L175 Difference]: Start difference. First operand has 212 places, 344 transitions, 6239 flow. Second operand 9 states and 153 transitions. [2024-05-12 13:31:38,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 406 transitions, 7687 flow [2024-05-12 13:31:38,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 406 transitions, 7292 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-05-12 13:31:38,930 INFO L231 Difference]: Finished difference. Result has 215 places, 371 transitions, 6469 flow [2024-05-12 13:31:38,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5848, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6469, PETRI_PLACES=215, PETRI_TRANSITIONS=371} [2024-05-12 13:31:38,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-05-12 13:31:38,931 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 371 transitions, 6469 flow [2024-05-12 13:31:38,931 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) [2024-05-12 13:31:38,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:38,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:38,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:31:38,932 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:38,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:38,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1789204433, now seen corresponding path program 11 times [2024-05-12 13:31:38,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:38,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254349492] [2024-05-12 13:31:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:38,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:39,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:39,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254349492] [2024-05-12 13:31:39,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254349492] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:39,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:39,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:39,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418354753] [2024-05-12 13:31:39,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:39,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:39,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:39,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:39,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 371 transitions, 6469 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) [2024-05-12 13:31:39,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:39,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:39,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:40,600 INFO L124 PetriNetUnfolderBase]: 2315/4394 cut-off events. [2024-05-12 13:31:40,601 INFO L125 PetriNetUnfolderBase]: For 59332/59332 co-relation queries the response was YES. [2024-05-12 13:31:40,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30281 conditions, 4394 events. 2315/4394 cut-off events. For 59332/59332 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32925 event pairs, 867 based on Foata normal form. 3/4249 useless extension candidates. Maximal degree in co-relation 30174. Up to 3492 conditions per place. [2024-05-12 13:31:40,643 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 365 selfloop transitions, 42 changer transitions 0/414 dead transitions. [2024-05-12 13:31:40,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 414 transitions, 7608 flow [2024-05-12 13:31:40,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-05-12 13:31:40,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-05-12 13:31:40,644 INFO L175 Difference]: Start difference. First operand has 215 places, 371 transitions, 6469 flow. Second operand 9 states and 154 transitions. [2024-05-12 13:31:40,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 414 transitions, 7608 flow [2024-05-12 13:31:40,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 414 transitions, 7452 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:40,883 INFO L231 Difference]: Finished difference. Result has 221 places, 377 transitions, 6530 flow [2024-05-12 13:31:40,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6313, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6530, PETRI_PLACES=221, PETRI_TRANSITIONS=377} [2024-05-12 13:31:40,884 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-05-12 13:31:40,884 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 377 transitions, 6530 flow [2024-05-12 13:31:40,884 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) [2024-05-12 13:31:40,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:40,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:40,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:31:40,885 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:40,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:40,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1798379069, now seen corresponding path program 1 times [2024-05-12 13:31:40,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:40,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352288117] [2024-05-12 13:31:40,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:40,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:41,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:41,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352288117] [2024-05-12 13:31:41,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352288117] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:41,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:41,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:41,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931151437] [2024-05-12 13:31:41,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:41,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:41,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:41,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 377 transitions, 6530 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) [2024-05-12 13:31:41,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:41,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:41,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:42,440 INFO L124 PetriNetUnfolderBase]: 2317/4402 cut-off events. [2024-05-12 13:31:42,441 INFO L125 PetriNetUnfolderBase]: For 58600/58600 co-relation queries the response was YES. [2024-05-12 13:31:42,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30313 conditions, 4402 events. 2317/4402 cut-off events. For 58600/58600 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 33021 event pairs, 897 based on Foata normal form. 2/4255 useless extension candidates. Maximal degree in co-relation 30204. Up to 3661 conditions per place. [2024-05-12 13:31:42,486 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 380 selfloop transitions, 19 changer transitions 0/406 dead transitions. [2024-05-12 13:31:42,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 406 transitions, 7460 flow [2024-05-12 13:31:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-05-12 13:31:42,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-05-12 13:31:42,489 INFO L175 Difference]: Start difference. First operand has 221 places, 377 transitions, 6530 flow. Second operand 9 states and 150 transitions. [2024-05-12 13:31:42,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 406 transitions, 7460 flow [2024-05-12 13:31:42,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 406 transitions, 7317 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:42,726 INFO L231 Difference]: Finished difference. Result has 224 places, 379 transitions, 6454 flow [2024-05-12 13:31:42,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6387, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6454, PETRI_PLACES=224, PETRI_TRANSITIONS=379} [2024-05-12 13:31:42,731 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-05-12 13:31:42,731 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 379 transitions, 6454 flow [2024-05-12 13:31:42,731 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) [2024-05-12 13:31:42,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:42,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:42,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:31:42,732 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:42,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:42,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1670199867, now seen corresponding path program 1 times [2024-05-12 13:31:42,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:42,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270769297] [2024-05-12 13:31:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:42,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:42,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:42,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270769297] [2024-05-12 13:31:42,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270769297] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:42,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:42,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:31:42,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872848886] [2024-05-12 13:31:42,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:42,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:31:42,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:42,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:31:42,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:31:42,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-05-12 13:31:42,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 379 transitions, 6454 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:42,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:42,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-05-12 13:31:42,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:43,284 INFO L124 PetriNetUnfolderBase]: 1038/2222 cut-off events. [2024-05-12 13:31:43,284 INFO L125 PetriNetUnfolderBase]: For 27079/27151 co-relation queries the response was YES. [2024-05-12 13:31:43,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14541 conditions, 2222 events. 1038/2222 cut-off events. For 27079/27151 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 15872 event pairs, 253 based on Foata normal form. 198/2211 useless extension candidates. Maximal degree in co-relation 14431. Up to 728 conditions per place. [2024-05-12 13:31:43,303 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 131 selfloop transitions, 99 changer transitions 0/335 dead transitions. [2024-05-12 13:31:43,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 335 transitions, 6226 flow [2024-05-12 13:31:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:31:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:31:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-05-12 13:31:43,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6554054054054054 [2024-05-12 13:31:43,304 INFO L175 Difference]: Start difference. First operand has 224 places, 379 transitions, 6454 flow. Second operand 4 states and 97 transitions. [2024-05-12 13:31:43,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 335 transitions, 6226 flow [2024-05-12 13:31:43,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 335 transitions, 5579 flow, removed 52 selfloop flow, removed 27 redundant places. [2024-05-12 13:31:43,397 INFO L231 Difference]: Finished difference. Result has 202 places, 323 transitions, 5455 flow [2024-05-12 13:31:43,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5023, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5455, PETRI_PLACES=202, PETRI_TRANSITIONS=323} [2024-05-12 13:31:43,398 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-05-12 13:31:43,399 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 323 transitions, 5455 flow [2024-05-12 13:31:43,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:43,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:43,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:43,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:31:43,399 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:43,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:43,400 INFO L85 PathProgramCache]: Analyzing trace with hash 65584282, now seen corresponding path program 1 times [2024-05-12 13:31:43,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:43,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111914364] [2024-05-12 13:31:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:43,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:44,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:44,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111914364] [2024-05-12 13:31:44,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111914364] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:44,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:44,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:44,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984648946] [2024-05-12 13:31:44,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:44,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:44,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:44,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:44,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:44,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 323 transitions, 5455 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:44,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:44,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:44,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:45,037 INFO L124 PetriNetUnfolderBase]: 1422/2804 cut-off events. [2024-05-12 13:31:45,038 INFO L125 PetriNetUnfolderBase]: For 43160/43168 co-relation queries the response was YES. [2024-05-12 13:31:45,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17785 conditions, 2804 events. 1422/2804 cut-off events. For 43160/43168 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18848 event pairs, 336 based on Foata normal form. 10/2610 useless extension candidates. Maximal degree in co-relation 17686. Up to 1326 conditions per place. [2024-05-12 13:31:45,062 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 224 selfloop transitions, 135 changer transitions 0/367 dead transitions. [2024-05-12 13:31:45,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 367 transitions, 6479 flow [2024-05-12 13:31:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-05-12 13:31:45,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-05-12 13:31:45,064 INFO L175 Difference]: Start difference. First operand has 202 places, 323 transitions, 5455 flow. Second operand 10 states and 184 transitions. [2024-05-12 13:31:45,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 367 transitions, 6479 flow [2024-05-12 13:31:45,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 367 transitions, 6457 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-05-12 13:31:45,233 INFO L231 Difference]: Finished difference. Result has 211 places, 325 transitions, 5745 flow [2024-05-12 13:31:45,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5443, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5745, PETRI_PLACES=211, PETRI_TRANSITIONS=325} [2024-05-12 13:31:45,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-05-12 13:31:45,234 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 325 transitions, 5745 flow [2024-05-12 13:31:45,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:45,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:45,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:45,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:31:45,235 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:45,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1227214074, now seen corresponding path program 2 times [2024-05-12 13:31:45,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:45,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181541583] [2024-05-12 13:31:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:45,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:45,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:45,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181541583] [2024-05-12 13:31:45,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181541583] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:45,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:45,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:45,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616075055] [2024-05-12 13:31:45,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:45,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:45,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:45,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:45,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:45,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 325 transitions, 5745 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:45,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:45,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:45,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:46,740 INFO L124 PetriNetUnfolderBase]: 1574/3209 cut-off events. [2024-05-12 13:31:46,740 INFO L125 PetriNetUnfolderBase]: For 56294/56307 co-relation queries the response was YES. [2024-05-12 13:31:46,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19872 conditions, 3209 events. 1574/3209 cut-off events. For 56294/56307 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22701 event pairs, 457 based on Foata normal form. 15/2986 useless extension candidates. Maximal degree in co-relation 19770. Up to 1963 conditions per place. [2024-05-12 13:31:46,760 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 213 selfloop transitions, 147 changer transitions 0/368 dead transitions. [2024-05-12 13:31:46,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 368 transitions, 6759 flow [2024-05-12 13:31:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:31:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:31:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-05-12 13:31:46,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-05-12 13:31:46,763 INFO L175 Difference]: Start difference. First operand has 211 places, 325 transitions, 5745 flow. Second operand 11 states and 199 transitions. [2024-05-12 13:31:46,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 368 transitions, 6759 flow [2024-05-12 13:31:46,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 368 transitions, 6571 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:46,926 INFO L231 Difference]: Finished difference. Result has 217 places, 328 transitions, 5917 flow [2024-05-12 13:31:46,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5561, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5917, PETRI_PLACES=217, PETRI_TRANSITIONS=328} [2024-05-12 13:31:46,927 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-05-12 13:31:46,927 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 328 transitions, 5917 flow [2024-05-12 13:31:46,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:46,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:46,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:46,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:31:46,927 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:46,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:46,928 INFO L85 PathProgramCache]: Analyzing trace with hash 47048693, now seen corresponding path program 1 times [2024-05-12 13:31:46,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:46,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788817727] [2024-05-12 13:31:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:46,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:47,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:47,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788817727] [2024-05-12 13:31:47,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788817727] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:47,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:47,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:47,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406985768] [2024-05-12 13:31:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:47,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:47,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:47,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:47,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:47,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:47,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 328 transitions, 5917 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:47,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:47,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:47,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:48,594 INFO L124 PetriNetUnfolderBase]: 1654/3328 cut-off events. [2024-05-12 13:31:48,594 INFO L125 PetriNetUnfolderBase]: For 61293/61301 co-relation queries the response was YES. [2024-05-12 13:31:48,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21245 conditions, 3328 events. 1654/3328 cut-off events. For 61293/61301 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23580 event pairs, 464 based on Foata normal form. 10/3071 useless extension candidates. Maximal degree in co-relation 21140. Up to 2226 conditions per place. [2024-05-12 13:31:48,616 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 221 selfloop transitions, 156 changer transitions 0/385 dead transitions. [2024-05-12 13:31:48,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 385 transitions, 7287 flow [2024-05-12 13:31:48,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-05-12 13:31:48,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-05-12 13:31:48,617 INFO L175 Difference]: Start difference. First operand has 217 places, 328 transitions, 5917 flow. Second operand 10 states and 171 transitions. [2024-05-12 13:31:48,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 385 transitions, 7287 flow [2024-05-12 13:31:48,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 385 transitions, 7080 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:48,824 INFO L231 Difference]: Finished difference. Result has 222 places, 356 transitions, 6571 flow [2024-05-12 13:31:48,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5710, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6571, PETRI_PLACES=222, PETRI_TRANSITIONS=356} [2024-05-12 13:31:48,824 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-05-12 13:31:48,824 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 356 transitions, 6571 flow [2024-05-12 13:31:48,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:48,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:48,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:48,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:31:48,825 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:48,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:48,825 INFO L85 PathProgramCache]: Analyzing trace with hash 47048538, now seen corresponding path program 3 times [2024-05-12 13:31:48,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:48,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312335093] [2024-05-12 13:31:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:48,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:49,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:49,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312335093] [2024-05-12 13:31:49,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312335093] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:49,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:49,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:49,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449817151] [2024-05-12 13:31:49,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:49,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:49,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:49,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:49,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:49,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 356 transitions, 6571 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:49,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:49,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:49,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:50,562 INFO L124 PetriNetUnfolderBase]: 1632/3313 cut-off events. [2024-05-12 13:31:50,563 INFO L125 PetriNetUnfolderBase]: For 64080/64093 co-relation queries the response was YES. [2024-05-12 13:31:50,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21427 conditions, 3313 events. 1632/3313 cut-off events. For 64080/64093 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23547 event pairs, 482 based on Foata normal form. 29/3088 useless extension candidates. Maximal degree in co-relation 21318. Up to 2155 conditions per place. [2024-05-12 13:31:50,585 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 236 selfloop transitions, 148 changer transitions 0/392 dead transitions. [2024-05-12 13:31:50,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 392 transitions, 7515 flow [2024-05-12 13:31:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:31:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:31:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-05-12 13:31:50,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-05-12 13:31:50,586 INFO L175 Difference]: Start difference. First operand has 222 places, 356 transitions, 6571 flow. Second operand 12 states and 206 transitions. [2024-05-12 13:31:50,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 392 transitions, 7515 flow [2024-05-12 13:31:50,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 392 transitions, 7470 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:50,782 INFO L231 Difference]: Finished difference. Result has 232 places, 356 transitions, 6833 flow [2024-05-12 13:31:50,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6526, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6833, PETRI_PLACES=232, PETRI_TRANSITIONS=356} [2024-05-12 13:31:50,783 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-05-12 13:31:50,783 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 356 transitions, 6833 flow [2024-05-12 13:31:50,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:50,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:50,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:50,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:31:50,784 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:50,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash 133884653, now seen corresponding path program 2 times [2024-05-12 13:31:50,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:50,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999004039] [2024-05-12 13:31:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:50,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:51,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:51,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999004039] [2024-05-12 13:31:51,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999004039] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:51,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:51,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:51,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43062495] [2024-05-12 13:31:51,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:51,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:51,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:51,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:51,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 356 transitions, 6833 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:51,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:51,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:51,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:52,511 INFO L124 PetriNetUnfolderBase]: 1645/3314 cut-off events. [2024-05-12 13:31:52,511 INFO L125 PetriNetUnfolderBase]: For 59872/59885 co-relation queries the response was YES. [2024-05-12 13:31:52,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21920 conditions, 3314 events. 1645/3314 cut-off events. For 59872/59885 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23577 event pairs, 465 based on Foata normal form. 15/3068 useless extension candidates. Maximal degree in co-relation 21809. Up to 2420 conditions per place. [2024-05-12 13:31:52,541 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 263 selfloop transitions, 114 changer transitions 0/385 dead transitions. [2024-05-12 13:31:52,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 385 transitions, 7776 flow [2024-05-12 13:31:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-05-12 13:31:52,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-05-12 13:31:52,542 INFO L175 Difference]: Start difference. First operand has 232 places, 356 transitions, 6833 flow. Second operand 10 states and 169 transitions. [2024-05-12 13:31:52,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 385 transitions, 7776 flow [2024-05-12 13:31:52,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 385 transitions, 7476 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-05-12 13:31:52,780 INFO L231 Difference]: Finished difference. Result has 232 places, 359 transitions, 6847 flow [2024-05-12 13:31:52,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6533, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6847, PETRI_PLACES=232, PETRI_TRANSITIONS=359} [2024-05-12 13:31:52,781 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-05-12 13:31:52,781 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 359 transitions, 6847 flow [2024-05-12 13:31:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:52,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:52,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:52,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:31:52,782 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:52,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash 133740503, now seen corresponding path program 3 times [2024-05-12 13:31:52,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:52,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111737678] [2024-05-12 13:31:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:52,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:53,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:53,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111737678] [2024-05-12 13:31:53,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111737678] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:53,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:53,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:53,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998957914] [2024-05-12 13:31:53,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:53,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:53,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:53,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:53,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:53,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:53,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 359 transitions, 6847 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:53,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:53,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:53,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:54,642 INFO L124 PetriNetUnfolderBase]: 1658/3335 cut-off events. [2024-05-12 13:31:54,643 INFO L125 PetriNetUnfolderBase]: For 61711/61724 co-relation queries the response was YES. [2024-05-12 13:31:54,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22177 conditions, 3335 events. 1658/3335 cut-off events. For 61711/61724 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23697 event pairs, 468 based on Foata normal form. 15/3087 useless extension candidates. Maximal degree in co-relation 22064. Up to 2418 conditions per place. [2024-05-12 13:31:54,666 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 262 selfloop transitions, 121 changer transitions 0/391 dead transitions. [2024-05-12 13:31:54,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 391 transitions, 7821 flow [2024-05-12 13:31:54,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:31:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:31:54,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-05-12 13:31:54,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-05-12 13:31:54,668 INFO L175 Difference]: Start difference. First operand has 232 places, 359 transitions, 6847 flow. Second operand 12 states and 195 transitions. [2024-05-12 13:31:54,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 391 transitions, 7821 flow [2024-05-12 13:31:54,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 391 transitions, 7695 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:54,901 INFO L231 Difference]: Finished difference. Result has 240 places, 361 transitions, 7017 flow [2024-05-12 13:31:54,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6721, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7017, PETRI_PLACES=240, PETRI_TRANSITIONS=361} [2024-05-12 13:31:54,902 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-05-12 13:31:54,902 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 361 transitions, 7017 flow [2024-05-12 13:31:54,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:54,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:54,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:54,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:31:54,903 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:54,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:54,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1068659504, now seen corresponding path program 4 times [2024-05-12 13:31:54,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:54,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007701020] [2024-05-12 13:31:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:54,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:55,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:55,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007701020] [2024-05-12 13:31:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007701020] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:55,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870355274] [2024-05-12 13:31:55,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:55,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:55,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:55,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:55,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:55,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 361 transitions, 7017 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:55,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:55,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:55,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:56,279 INFO L124 PetriNetUnfolderBase]: 1734/3488 cut-off events. [2024-05-12 13:31:56,279 INFO L125 PetriNetUnfolderBase]: For 64005/64005 co-relation queries the response was YES. [2024-05-12 13:31:56,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23006 conditions, 3488 events. 1734/3488 cut-off events. For 64005/64005 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 24817 event pairs, 408 based on Foata normal form. 2/3227 useless extension candidates. Maximal degree in co-relation 22892. Up to 1638 conditions per place. [2024-05-12 13:31:56,312 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 283 selfloop transitions, 111 changer transitions 0/402 dead transitions. [2024-05-12 13:31:56,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 402 transitions, 8134 flow [2024-05-12 13:31:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-05-12 13:31:56,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-05-12 13:31:56,313 INFO L175 Difference]: Start difference. First operand has 240 places, 361 transitions, 7017 flow. Second operand 9 states and 157 transitions. [2024-05-12 13:31:56,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 402 transitions, 8134 flow [2024-05-12 13:31:56,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 402 transitions, 7845 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-05-12 13:31:56,591 INFO L231 Difference]: Finished difference. Result has 240 places, 369 transitions, 7105 flow [2024-05-12 13:31:56,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6730, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7105, PETRI_PLACES=240, PETRI_TRANSITIONS=369} [2024-05-12 13:31:56,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-05-12 13:31:56,592 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 369 transitions, 7105 flow [2024-05-12 13:31:56,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:56,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:56,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:56,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:31:56,593 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:56,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:56,593 INFO L85 PathProgramCache]: Analyzing trace with hash -130021524, now seen corresponding path program 5 times [2024-05-12 13:31:56,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:56,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653265330] [2024-05-12 13:31:56,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:56,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:57,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:57,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653265330] [2024-05-12 13:31:57,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653265330] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:57,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:57,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:57,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599097488] [2024-05-12 13:31:57,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:57,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:57,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:57,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:57,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:57,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:57,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 369 transitions, 7105 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:57,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:57,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:57,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:58,005 INFO L124 PetriNetUnfolderBase]: 1801/3591 cut-off events. [2024-05-12 13:31:58,006 INFO L125 PetriNetUnfolderBase]: For 67727/67727 co-relation queries the response was YES. [2024-05-12 13:31:58,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24052 conditions, 3591 events. 1801/3591 cut-off events. For 67727/67727 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25871 event pairs, 498 based on Foata normal form. 2/3326 useless extension candidates. Maximal degree in co-relation 23936. Up to 2031 conditions per place. [2024-05-12 13:31:58,042 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 277 selfloop transitions, 120 changer transitions 0/405 dead transitions. [2024-05-12 13:31:58,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 405 transitions, 8224 flow [2024-05-12 13:31:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:58,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 13:31:58,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-05-12 13:31:58,044 INFO L175 Difference]: Start difference. First operand has 240 places, 369 transitions, 7105 flow. Second operand 9 states and 160 transitions. [2024-05-12 13:31:58,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 405 transitions, 8224 flow [2024-05-12 13:31:58,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 405 transitions, 7992 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:58,332 INFO L231 Difference]: Finished difference. Result has 244 places, 374 transitions, 7228 flow [2024-05-12 13:31:58,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6916, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7228, PETRI_PLACES=244, PETRI_TRANSITIONS=374} [2024-05-12 13:31:58,333 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-05-12 13:31:58,333 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 374 transitions, 7228 flow [2024-05-12 13:31:58,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:58,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:58,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:58,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:31:58,334 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:58,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:58,334 INFO L85 PathProgramCache]: Analyzing trace with hash 387534636, now seen corresponding path program 6 times [2024-05-12 13:31:58,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:58,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783207959] [2024-05-12 13:31:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:58,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:58,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:58,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783207959] [2024-05-12 13:31:58,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783207959] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:58,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:58,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:58,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763207672] [2024-05-12 13:31:58,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:58,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:58,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:58,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:58,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:58,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:31:58,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 374 transitions, 7228 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:58,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:58,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:31:58,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:59,789 INFO L124 PetriNetUnfolderBase]: 1839/3745 cut-off events. [2024-05-12 13:31:59,789 INFO L125 PetriNetUnfolderBase]: For 69923/69923 co-relation queries the response was YES. [2024-05-12 13:31:59,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24427 conditions, 3745 events. 1839/3745 cut-off events. For 69923/69923 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27736 event pairs, 591 based on Foata normal form. 2/3455 useless extension candidates. Maximal degree in co-relation 24310. Up to 2597 conditions per place. [2024-05-12 13:31:59,821 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 274 selfloop transitions, 121 changer transitions 0/403 dead transitions. [2024-05-12 13:31:59,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 403 transitions, 8266 flow [2024-05-12 13:31:59,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 13:31:59,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-05-12 13:31:59,822 INFO L175 Difference]: Start difference. First operand has 244 places, 374 transitions, 7228 flow. Second operand 9 states and 158 transitions. [2024-05-12 13:31:59,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 403 transitions, 8266 flow [2024-05-12 13:32:00,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 403 transitions, 8135 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 13:32:00,106 INFO L231 Difference]: Finished difference. Result has 247 places, 377 transitions, 7392 flow [2024-05-12 13:32:00,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7099, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7392, PETRI_PLACES=247, PETRI_TRANSITIONS=377} [2024-05-12 13:32:00,106 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-05-12 13:32:00,107 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 377 transitions, 7392 flow [2024-05-12 13:32:00,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:00,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:00,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:00,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:32:00,107 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:00,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash 370557641, now seen corresponding path program 4 times [2024-05-12 13:32:00,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:00,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452129487] [2024-05-12 13:32:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:00,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:00,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:00,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452129487] [2024-05-12 13:32:00,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452129487] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:00,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:00,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:00,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014935343] [2024-05-12 13:32:00,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:00,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:00,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:00,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 377 transitions, 7392 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:00,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:00,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:00,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:02,016 INFO L124 PetriNetUnfolderBase]: 2025/4031 cut-off events. [2024-05-12 13:32:02,016 INFO L125 PetriNetUnfolderBase]: For 79423/79431 co-relation queries the response was YES. [2024-05-12 13:32:02,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27791 conditions, 4031 events. 2025/4031 cut-off events. For 79423/79431 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29614 event pairs, 603 based on Foata normal form. 10/3684 useless extension candidates. Maximal degree in co-relation 27673. Up to 2749 conditions per place. [2024-05-12 13:32:02,053 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 243 selfloop transitions, 239 changer transitions 0/490 dead transitions. [2024-05-12 13:32:02,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 490 transitions, 10406 flow [2024-05-12 13:32:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-05-12 13:32:02,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-05-12 13:32:02,055 INFO L175 Difference]: Start difference. First operand has 247 places, 377 transitions, 7392 flow. Second operand 10 states and 170 transitions. [2024-05-12 13:32:02,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 490 transitions, 10406 flow [2024-05-12 13:32:02,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 490 transitions, 10242 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 13:32:02,389 INFO L231 Difference]: Finished difference. Result has 254 places, 463 transitions, 9838 flow [2024-05-12 13:32:02,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7251, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9838, PETRI_PLACES=254, PETRI_TRANSITIONS=463} [2024-05-12 13:32:02,390 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-05-12 13:32:02,390 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 463 transitions, 9838 flow [2024-05-12 13:32:02,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:02,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:02,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:02,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:32:02,391 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:02,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:02,391 INFO L85 PathProgramCache]: Analyzing trace with hash -128143854, now seen corresponding path program 7 times [2024-05-12 13:32:02,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:02,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281926639] [2024-05-12 13:32:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:02,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:02,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:02,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281926639] [2024-05-12 13:32:02,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281926639] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:02,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:02,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:32:02,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303614616] [2024-05-12 13:32:02,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:02,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:32:02,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:02,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:32:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:32:03,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:03,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 463 transitions, 9838 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:03,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:03,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:03,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:04,064 INFO L124 PetriNetUnfolderBase]: 2022/4025 cut-off events. [2024-05-12 13:32:04,065 INFO L125 PetriNetUnfolderBase]: For 81622/81629 co-relation queries the response was YES. [2024-05-12 13:32:04,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29325 conditions, 4025 events. 2022/4025 cut-off events. For 81622/81629 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29551 event pairs, 607 based on Foata normal form. 4/3672 useless extension candidates. Maximal degree in co-relation 29203. Up to 3008 conditions per place. [2024-05-12 13:32:04,098 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 340 selfloop transitions, 138 changer transitions 0/486 dead transitions. [2024-05-12 13:32:04,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 486 transitions, 10939 flow [2024-05-12 13:32:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-05-12 13:32:04,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-05-12 13:32:04,099 INFO L175 Difference]: Start difference. First operand has 254 places, 463 transitions, 9838 flow. Second operand 9 states and 154 transitions. [2024-05-12 13:32:04,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 486 transitions, 10939 flow [2024-05-12 13:32:04,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 486 transitions, 10705 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-05-12 13:32:04,456 INFO L231 Difference]: Finished difference. Result has 259 places, 463 transitions, 9912 flow [2024-05-12 13:32:04,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9622, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9912, PETRI_PLACES=259, PETRI_TRANSITIONS=463} [2024-05-12 13:32:04,456 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2024-05-12 13:32:04,457 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 463 transitions, 9912 flow [2024-05-12 13:32:04,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:04,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:04,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:04,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:32:04,457 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:04,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1515424812, now seen corresponding path program 8 times [2024-05-12 13:32:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:04,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555908732] [2024-05-12 13:32:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:05,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:05,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555908732] [2024-05-12 13:32:05,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555908732] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:05,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:05,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358536582] [2024-05-12 13:32:05,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:05,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:05,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:05,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:05,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:05,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:05,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 463 transitions, 9912 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:05,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:05,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:05,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:06,269 INFO L124 PetriNetUnfolderBase]: 2185/4416 cut-off events. [2024-05-12 13:32:06,269 INFO L125 PetriNetUnfolderBase]: For 89828/89829 co-relation queries the response was YES. [2024-05-12 13:32:06,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31405 conditions, 4416 events. 2185/4416 cut-off events. For 89828/89829 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 33531 event pairs, 680 based on Foata normal form. 3/4037 useless extension candidates. Maximal degree in co-relation 31281. Up to 2935 conditions per place. [2024-05-12 13:32:06,308 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 363 selfloop transitions, 143 changer transitions 0/514 dead transitions. [2024-05-12 13:32:06,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 514 transitions, 11376 flow [2024-05-12 13:32:06,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-05-12 13:32:06,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:32:06,309 INFO L175 Difference]: Start difference. First operand has 259 places, 463 transitions, 9912 flow. Second operand 10 states and 185 transitions. [2024-05-12 13:32:06,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 514 transitions, 11376 flow [2024-05-12 13:32:06,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 514 transitions, 11074 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:06,733 INFO L231 Difference]: Finished difference. Result has 262 places, 469 transitions, 10058 flow [2024-05-12 13:32:06,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9616, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10058, PETRI_PLACES=262, PETRI_TRANSITIONS=469} [2024-05-12 13:32:06,734 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-05-12 13:32:06,734 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 469 transitions, 10058 flow [2024-05-12 13:32:06,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:06,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:06,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:06,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:32:06,734 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:06,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:06,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1114143917, now seen corresponding path program 5 times [2024-05-12 13:32:06,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:06,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946008771] [2024-05-12 13:32:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:06,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:07,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:07,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946008771] [2024-05-12 13:32:07,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946008771] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:07,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:07,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:07,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246860396] [2024-05-12 13:32:07,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:07,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:07,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:07,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:07,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:07,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:07,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 469 transitions, 10058 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:07,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:07,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:07,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:08,743 INFO L124 PetriNetUnfolderBase]: 2252/4518 cut-off events. [2024-05-12 13:32:08,743 INFO L125 PetriNetUnfolderBase]: For 95295/95296 co-relation queries the response was YES. [2024-05-12 13:32:08,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32714 conditions, 4518 events. 2252/4518 cut-off events. For 95295/95296 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 34200 event pairs, 659 based on Foata normal form. 3/4096 useless extension candidates. Maximal degree in co-relation 32588. Up to 3297 conditions per place. [2024-05-12 13:32:08,787 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 335 selfloop transitions, 192 changer transitions 0/535 dead transitions. [2024-05-12 13:32:08,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 535 transitions, 12071 flow [2024-05-12 13:32:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-05-12 13:32:08,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-05-12 13:32:08,789 INFO L175 Difference]: Start difference. First operand has 262 places, 469 transitions, 10058 flow. Second operand 10 states and 176 transitions. [2024-05-12 13:32:08,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 535 transitions, 12071 flow [2024-05-12 13:32:09,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 535 transitions, 11880 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 13:32:09,262 INFO L231 Difference]: Finished difference. Result has 269 places, 503 transitions, 11134 flow [2024-05-12 13:32:09,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9871, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11134, PETRI_PLACES=269, PETRI_TRANSITIONS=503} [2024-05-12 13:32:09,269 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-05-12 13:32:09,271 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 503 transitions, 11134 flow [2024-05-12 13:32:09,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:09,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:09,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:09,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:32:09,272 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:09,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash -363643524, now seen corresponding path program 9 times [2024-05-12 13:32:09,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:09,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144413569] [2024-05-12 13:32:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:09,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144413569] [2024-05-12 13:32:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144413569] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:09,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:09,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631421158] [2024-05-12 13:32:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:09,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:09,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:09,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:09,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:09,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 503 transitions, 11134 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:09,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:09,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:09,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:11,419 INFO L124 PetriNetUnfolderBase]: 2367/4814 cut-off events. [2024-05-12 13:32:11,419 INFO L125 PetriNetUnfolderBase]: For 111962/111963 co-relation queries the response was YES. [2024-05-12 13:32:11,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34569 conditions, 4814 events. 2367/4814 cut-off events. For 111962/111963 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 37196 event pairs, 757 based on Foata normal form. 15/4394 useless extension candidates. Maximal degree in co-relation 34438. Up to 3476 conditions per place. [2024-05-12 13:32:11,460 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 397 selfloop transitions, 144 changer transitions 0/549 dead transitions. [2024-05-12 13:32:11,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 549 transitions, 12514 flow [2024-05-12 13:32:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-05-12 13:32:11,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-05-12 13:32:11,462 INFO L175 Difference]: Start difference. First operand has 269 places, 503 transitions, 11134 flow. Second operand 11 states and 195 transitions. [2024-05-12 13:32:11,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 549 transitions, 12514 flow [2024-05-12 13:32:11,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 549 transitions, 12351 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-05-12 13:32:11,957 INFO L231 Difference]: Finished difference. Result has 276 places, 505 transitions, 11310 flow [2024-05-12 13:32:11,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10971, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11310, PETRI_PLACES=276, PETRI_TRANSITIONS=505} [2024-05-12 13:32:11,957 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-05-12 13:32:11,958 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 505 transitions, 11310 flow [2024-05-12 13:32:11,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:11,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:11,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:11,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:32:11,958 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:11,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1119650292, now seen corresponding path program 10 times [2024-05-12 13:32:11,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:11,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666345654] [2024-05-12 13:32:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:11,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:12,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:12,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666345654] [2024-05-12 13:32:12,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666345654] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:12,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:12,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:12,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735604158] [2024-05-12 13:32:12,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:12,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:12,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:12,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:12,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 505 transitions, 11310 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:12,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:12,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:12,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:14,310 INFO L124 PetriNetUnfolderBase]: 2415/4960 cut-off events. [2024-05-12 13:32:14,310 INFO L125 PetriNetUnfolderBase]: For 101520/101527 co-relation queries the response was YES. [2024-05-12 13:32:14,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34756 conditions, 4960 events. 2415/4960 cut-off events. For 101520/101527 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 38863 event pairs, 795 based on Foata normal form. 21/4530 useless extension candidates. Maximal degree in co-relation 34623. Up to 3642 conditions per place. [2024-05-12 13:32:14,355 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 434 selfloop transitions, 101 changer transitions 0/543 dead transitions. [2024-05-12 13:32:14,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 543 transitions, 12616 flow [2024-05-12 13:32:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-05-12 13:32:14,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-05-12 13:32:14,357 INFO L175 Difference]: Start difference. First operand has 276 places, 505 transitions, 11310 flow. Second operand 11 states and 189 transitions. [2024-05-12 13:32:14,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 543 transitions, 12616 flow [2024-05-12 13:32:14,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 543 transitions, 12377 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:14,821 INFO L231 Difference]: Finished difference. Result has 280 places, 506 transitions, 11308 flow [2024-05-12 13:32:14,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11073, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11308, PETRI_PLACES=280, PETRI_TRANSITIONS=506} [2024-05-12 13:32:14,822 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-05-12 13:32:14,822 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 506 transitions, 11308 flow [2024-05-12 13:32:14,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:14,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:14,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:14,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:32:14,823 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:14,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash -529714323, now seen corresponding path program 6 times [2024-05-12 13:32:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:14,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869606422] [2024-05-12 13:32:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:14,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:15,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:15,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869606422] [2024-05-12 13:32:15,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869606422] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:15,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:15,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:15,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729728378] [2024-05-12 13:32:15,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:15,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:15,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:15,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:15,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:15,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:15,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 506 transitions, 11308 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:15,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:15,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:15,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:17,174 INFO L124 PetriNetUnfolderBase]: 2447/4987 cut-off events. [2024-05-12 13:32:17,174 INFO L125 PetriNetUnfolderBase]: For 93144/93151 co-relation queries the response was YES. [2024-05-12 13:32:17,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35288 conditions, 4987 events. 2447/4987 cut-off events. For 93144/93151 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 39010 event pairs, 786 based on Foata normal form. 9/4526 useless extension candidates. Maximal degree in co-relation 35154. Up to 3784 conditions per place. [2024-05-12 13:32:17,220 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 405 selfloop transitions, 133 changer transitions 0/546 dead transitions. [2024-05-12 13:32:17,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 546 transitions, 12798 flow [2024-05-12 13:32:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:32:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:32:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-05-12 13:32:17,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-05-12 13:32:17,222 INFO L175 Difference]: Start difference. First operand has 280 places, 506 transitions, 11308 flow. Second operand 12 states and 198 transitions. [2024-05-12 13:32:17,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 546 transitions, 12798 flow [2024-05-12 13:32:17,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 546 transitions, 12612 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:17,701 INFO L231 Difference]: Finished difference. Result has 285 places, 515 transitions, 11660 flow [2024-05-12 13:32:17,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11124, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11660, PETRI_PLACES=285, PETRI_TRANSITIONS=515} [2024-05-12 13:32:17,702 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-05-12 13:32:17,702 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 515 transitions, 11660 flow [2024-05-12 13:32:17,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:17,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:17,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:17,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:32:17,702 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:17,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:17,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1502166887, now seen corresponding path program 7 times [2024-05-12 13:32:17,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:17,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338640472] [2024-05-12 13:32:17,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:17,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:18,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:18,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338640472] [2024-05-12 13:32:18,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338640472] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:18,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:18,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:18,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74062050] [2024-05-12 13:32:18,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:18,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:18,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:18,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:18,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:18,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 515 transitions, 11660 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:18,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:18,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:18,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:19,867 INFO L124 PetriNetUnfolderBase]: 2448/4991 cut-off events. [2024-05-12 13:32:19,867 INFO L125 PetriNetUnfolderBase]: For 92353/92354 co-relation queries the response was YES. [2024-05-12 13:32:19,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35466 conditions, 4991 events. 2448/4991 cut-off events. For 92353/92354 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 39061 event pairs, 741 based on Foata normal form. 3/4523 useless extension candidates. Maximal degree in co-relation 35330. Up to 3752 conditions per place. [2024-05-12 13:32:19,923 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 388 selfloop transitions, 152 changer transitions 0/548 dead transitions. [2024-05-12 13:32:19,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 548 transitions, 12983 flow [2024-05-12 13:32:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-05-12 13:32:19,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-05-12 13:32:19,925 INFO L175 Difference]: Start difference. First operand has 285 places, 515 transitions, 11660 flow. Second operand 10 states and 174 transitions. [2024-05-12 13:32:19,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 548 transitions, 12983 flow [2024-05-12 13:32:20,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 548 transitions, 12595 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-05-12 13:32:20,518 INFO L231 Difference]: Finished difference. Result has 285 places, 517 transitions, 11644 flow [2024-05-12 13:32:20,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11282, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11644, PETRI_PLACES=285, PETRI_TRANSITIONS=517} [2024-05-12 13:32:20,519 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-05-12 13:32:20,519 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 517 transitions, 11644 flow [2024-05-12 13:32:20,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:20,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:20,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:20,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:32:20,519 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:20,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash 913438192, now seen corresponding path program 11 times [2024-05-12 13:32:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033345747] [2024-05-12 13:32:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:20,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:21,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033345747] [2024-05-12 13:32:21,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033345747] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:21,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:21,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086245739] [2024-05-12 13:32:21,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:21,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:21,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:21,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:21,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:21,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:21,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 517 transitions, 11644 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:21,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:21,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:21,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:22,755 INFO L124 PetriNetUnfolderBase]: 2475/5054 cut-off events. [2024-05-12 13:32:22,755 INFO L125 PetriNetUnfolderBase]: For 92900/92904 co-relation queries the response was YES. [2024-05-12 13:32:22,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35629 conditions, 5054 events. 2475/5054 cut-off events. For 92900/92904 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 39220 event pairs, 579 based on Foata normal form. 6/4623 useless extension candidates. Maximal degree in co-relation 35492. Up to 2608 conditions per place. [2024-05-12 13:32:22,813 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 359 selfloop transitions, 186 changer transitions 0/553 dead transitions. [2024-05-12 13:32:22,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 553 transitions, 13043 flow [2024-05-12 13:32:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-05-12 13:32:22,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-05-12 13:32:22,814 INFO L175 Difference]: Start difference. First operand has 285 places, 517 transitions, 11644 flow. Second operand 9 states and 155 transitions. [2024-05-12 13:32:22,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 553 transitions, 13043 flow [2024-05-12 13:32:23,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 553 transitions, 12691 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-05-12 13:32:23,523 INFO L231 Difference]: Finished difference. Result has 285 places, 519 transitions, 11709 flow [2024-05-12 13:32:23,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11292, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11709, PETRI_PLACES=285, PETRI_TRANSITIONS=519} [2024-05-12 13:32:23,523 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-05-12 13:32:23,523 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 519 transitions, 11709 flow [2024-05-12 13:32:23,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:23,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:23,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:23,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:32:23,524 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:23,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:23,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1829363716, now seen corresponding path program 12 times [2024-05-12 13:32:23,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:23,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117383404] [2024-05-12 13:32:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:23,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:24,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117383404] [2024-05-12 13:32:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117383404] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:24,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:24,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:24,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287123053] [2024-05-12 13:32:24,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:24,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:24,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:24,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:24,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:24,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:24,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 519 transitions, 11709 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:24,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:24,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:24,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:25,659 INFO L124 PetriNetUnfolderBase]: 2696/5629 cut-off events. [2024-05-12 13:32:25,659 INFO L125 PetriNetUnfolderBase]: For 116513/116520 co-relation queries the response was YES. [2024-05-12 13:32:25,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38073 conditions, 5629 events. 2696/5629 cut-off events. For 116513/116520 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 45891 event pairs, 899 based on Foata normal form. 23/5162 useless extension candidates. Maximal degree in co-relation 37936. Up to 3206 conditions per place. [2024-05-12 13:32:25,722 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 222 selfloop transitions, 339 changer transitions 0/569 dead transitions. [2024-05-12 13:32:25,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 569 transitions, 13328 flow [2024-05-12 13:32:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-05-12 13:32:25,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-05-12 13:32:25,724 INFO L175 Difference]: Start difference. First operand has 285 places, 519 transitions, 11709 flow. Second operand 11 states and 192 transitions. [2024-05-12 13:32:25,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 569 transitions, 13328 flow [2024-05-12 13:32:26,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 569 transitions, 13155 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 13:32:26,339 INFO L231 Difference]: Finished difference. Result has 290 places, 524 transitions, 12362 flow [2024-05-12 13:32:26,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11544, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12362, PETRI_PLACES=290, PETRI_TRANSITIONS=524} [2024-05-12 13:32:26,340 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-05-12 13:32:26,340 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 524 transitions, 12362 flow [2024-05-12 13:32:26,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:26,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:26,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:26,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:32:26,341 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:26,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:26,341 INFO L85 PathProgramCache]: Analyzing trace with hash 915316017, now seen corresponding path program 8 times [2024-05-12 13:32:26,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:26,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174376133] [2024-05-12 13:32:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:26,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:27,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174376133] [2024-05-12 13:32:27,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174376133] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:27,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:27,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:27,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942137448] [2024-05-12 13:32:27,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:27,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:27,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:27,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:27,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:27,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 524 transitions, 12362 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:27,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:27,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:27,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:28,539 INFO L124 PetriNetUnfolderBase]: 2714/5622 cut-off events. [2024-05-12 13:32:28,540 INFO L125 PetriNetUnfolderBase]: For 104074/104078 co-relation queries the response was YES. [2024-05-12 13:32:28,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38902 conditions, 5622 events. 2714/5622 cut-off events. For 104074/104078 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 45803 event pairs, 890 based on Foata normal form. 6/5114 useless extension candidates. Maximal degree in co-relation 38765. Up to 3793 conditions per place. [2024-05-12 13:32:28,603 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 229 selfloop transitions, 318 changer transitions 0/555 dead transitions. [2024-05-12 13:32:28,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 555 transitions, 13794 flow [2024-05-12 13:32:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-05-12 13:32:28,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-05-12 13:32:28,605 INFO L175 Difference]: Start difference. First operand has 290 places, 524 transitions, 12362 flow. Second operand 9 states and 154 transitions. [2024-05-12 13:32:28,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 555 transitions, 13794 flow [2024-05-12 13:32:29,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 555 transitions, 13055 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-05-12 13:32:29,245 INFO L231 Difference]: Finished difference. Result has 288 places, 528 transitions, 12361 flow [2024-05-12 13:32:29,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11627, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12361, PETRI_PLACES=288, PETRI_TRANSITIONS=528} [2024-05-12 13:32:29,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-05-12 13:32:29,246 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 528 transitions, 12361 flow [2024-05-12 13:32:29,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:29,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:29,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:29,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:32:29,246 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:29,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:29,247 INFO L85 PathProgramCache]: Analyzing trace with hash 915312142, now seen corresponding path program 13 times [2024-05-12 13:32:29,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:29,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018037152] [2024-05-12 13:32:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:29,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:29,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:29,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018037152] [2024-05-12 13:32:29,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018037152] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:29,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:29,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:29,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766295606] [2024-05-12 13:32:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:29,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:29,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:29,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:29,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 528 transitions, 12361 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:29,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:29,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:29,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:31,375 INFO L124 PetriNetUnfolderBase]: 2763/5794 cut-off events. [2024-05-12 13:32:31,375 INFO L125 PetriNetUnfolderBase]: For 103450/103457 co-relation queries the response was YES. [2024-05-12 13:32:31,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39352 conditions, 5794 events. 2763/5794 cut-off events. For 103450/103457 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 47681 event pairs, 854 based on Foata normal form. 9/5291 useless extension candidates. Maximal degree in co-relation 39216. Up to 2999 conditions per place. [2024-05-12 13:32:31,437 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 229 selfloop transitions, 342 changer transitions 0/579 dead transitions. [2024-05-12 13:32:31,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 579 transitions, 13986 flow [2024-05-12 13:32:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-05-12 13:32:31,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-05-12 13:32:31,439 INFO L175 Difference]: Start difference. First operand has 288 places, 528 transitions, 12361 flow. Second operand 10 states and 184 transitions. [2024-05-12 13:32:31,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 579 transitions, 13986 flow [2024-05-12 13:32:32,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 579 transitions, 13325 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:32,084 INFO L231 Difference]: Finished difference. Result has 290 places, 532 transitions, 12481 flow [2024-05-12 13:32:32,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11704, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12481, PETRI_PLACES=290, PETRI_TRANSITIONS=532} [2024-05-12 13:32:32,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-05-12 13:32:32,085 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 532 transitions, 12481 flow [2024-05-12 13:32:32,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:32,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:32,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:32,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:32:32,086 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:32,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1742527601, now seen corresponding path program 9 times [2024-05-12 13:32:32,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:32,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211436876] [2024-05-12 13:32:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:32,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:32,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:32,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211436876] [2024-05-12 13:32:32,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211436876] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:32,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:32,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:32,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973056106] [2024-05-12 13:32:32,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:32,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:32,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:32,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:32,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:32,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:32,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 532 transitions, 12481 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:32,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:32,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:32,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:34,095 INFO L124 PetriNetUnfolderBase]: 2786/5758 cut-off events. [2024-05-12 13:32:34,096 INFO L125 PetriNetUnfolderBase]: For 101215/101222 co-relation queries the response was YES. [2024-05-12 13:32:34,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39929 conditions, 5758 events. 2786/5758 cut-off events. For 101215/101222 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 47129 event pairs, 937 based on Foata normal form. 9/5238 useless extension candidates. Maximal degree in co-relation 39795. Up to 4340 conditions per place. [2024-05-12 13:32:34,153 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 383 selfloop transitions, 174 changer transitions 0/565 dead transitions. [2024-05-12 13:32:34,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 565 transitions, 13918 flow [2024-05-12 13:32:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:34,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-05-12 13:32:34,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-05-12 13:32:34,154 INFO L175 Difference]: Start difference. First operand has 290 places, 532 transitions, 12481 flow. Second operand 9 states and 152 transitions. [2024-05-12 13:32:34,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 565 transitions, 13918 flow [2024-05-12 13:32:34,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 565 transitions, 13405 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:34,606 INFO L231 Difference]: Finished difference. Result has 291 places, 538 transitions, 12465 flow [2024-05-12 13:32:34,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11968, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12465, PETRI_PLACES=291, PETRI_TRANSITIONS=538} [2024-05-12 13:32:34,607 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-05-12 13:32:34,607 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 538 transitions, 12465 flow [2024-05-12 13:32:34,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:34,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:34,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:34,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:32:34,608 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:34,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:34,608 INFO L85 PathProgramCache]: Analyzing trace with hash 142538651, now seen corresponding path program 10 times [2024-05-12 13:32:34,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:34,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068042560] [2024-05-12 13:32:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:34,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:35,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:35,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068042560] [2024-05-12 13:32:35,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068042560] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:35,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:35,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:35,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58055177] [2024-05-12 13:32:35,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:35,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:35,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:35,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:35,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 538 transitions, 12465 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:35,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:35,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:35,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:36,951 INFO L124 PetriNetUnfolderBase]: 2809/5780 cut-off events. [2024-05-12 13:32:36,951 INFO L125 PetriNetUnfolderBase]: For 100043/100050 co-relation queries the response was YES. [2024-05-12 13:32:36,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39720 conditions, 5780 events. 2809/5780 cut-off events. For 100043/100050 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 47073 event pairs, 1004 based on Foata normal form. 9/5242 useless extension candidates. Maximal degree in co-relation 39586. Up to 4363 conditions per place. [2024-05-12 13:32:37,011 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 370 selfloop transitions, 197 changer transitions 0/575 dead transitions. [2024-05-12 13:32:37,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 575 transitions, 13968 flow [2024-05-12 13:32:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-05-12 13:32:37,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-05-12 13:32:37,012 INFO L175 Difference]: Start difference. First operand has 291 places, 538 transitions, 12465 flow. Second operand 11 states and 176 transitions. [2024-05-12 13:32:37,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 575 transitions, 13968 flow [2024-05-12 13:32:37,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 575 transitions, 13583 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:37,442 INFO L231 Difference]: Finished difference. Result has 295 places, 544 transitions, 12650 flow [2024-05-12 13:32:37,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12080, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12650, PETRI_PLACES=295, PETRI_TRANSITIONS=544} [2024-05-12 13:32:37,442 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-05-12 13:32:37,442 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 544 transitions, 12650 flow [2024-05-12 13:32:37,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:37,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:37,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:37,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:32:37,443 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:37,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1831350644, now seen corresponding path program 14 times [2024-05-12 13:32:37,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:37,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904205361] [2024-05-12 13:32:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:37,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:38,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:38,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904205361] [2024-05-12 13:32:38,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904205361] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:38,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:38,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:38,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588040057] [2024-05-12 13:32:38,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:38,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:38,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:38,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:38,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:38,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:38,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 544 transitions, 12650 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:38,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:38,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:38,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:39,797 INFO L124 PetriNetUnfolderBase]: 2858/6017 cut-off events. [2024-05-12 13:32:39,797 INFO L125 PetriNetUnfolderBase]: For 101606/101607 co-relation queries the response was YES. [2024-05-12 13:32:39,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40561 conditions, 6017 events. 2858/6017 cut-off events. For 101606/101607 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 49628 event pairs, 732 based on Foata normal form. 3/5485 useless extension candidates. Maximal degree in co-relation 40426. Up to 4134 conditions per place. [2024-05-12 13:32:39,854 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 421 selfloop transitions, 156 changer transitions 0/585 dead transitions. [2024-05-12 13:32:39,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 585 transitions, 14248 flow [2024-05-12 13:32:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-05-12 13:32:39,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-05-12 13:32:39,855 INFO L175 Difference]: Start difference. First operand has 295 places, 544 transitions, 12650 flow. Second operand 9 states and 159 transitions. [2024-05-12 13:32:39,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 585 transitions, 14248 flow [2024-05-12 13:32:40,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 585 transitions, 13783 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:40,329 INFO L231 Difference]: Finished difference. Result has 296 places, 548 transitions, 12590 flow [2024-05-12 13:32:40,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12189, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12590, PETRI_PLACES=296, PETRI_TRANSITIONS=548} [2024-05-12 13:32:40,330 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-05-12 13:32:40,330 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 548 transitions, 12590 flow [2024-05-12 13:32:40,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:40,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:40,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:40,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:32:40,331 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:40,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:40,331 INFO L85 PathProgramCache]: Analyzing trace with hash 281066801, now seen corresponding path program 11 times [2024-05-12 13:32:40,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:40,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133554956] [2024-05-12 13:32:40,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:40,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:41,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:41,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133554956] [2024-05-12 13:32:41,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133554956] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:41,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:41,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616228671] [2024-05-12 13:32:41,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:41,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:41,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:41,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:41,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:41,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:41,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 548 transitions, 12590 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:41,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:41,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:41,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:42,560 INFO L124 PetriNetUnfolderBase]: 2891/5942 cut-off events. [2024-05-12 13:32:42,561 INFO L125 PetriNetUnfolderBase]: For 100855/100856 co-relation queries the response was YES. [2024-05-12 13:32:42,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40905 conditions, 5942 events. 2891/5942 cut-off events. For 100855/100856 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 48818 event pairs, 930 based on Foata normal form. 3/5389 useless extension candidates. Maximal degree in co-relation 40769. Up to 4258 conditions per place. [2024-05-12 13:32:42,613 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 294 selfloop transitions, 294 changer transitions 0/596 dead transitions. [2024-05-12 13:32:42,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 596 transitions, 14415 flow [2024-05-12 13:32:42,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:42,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 13:32:42,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-05-12 13:32:42,614 INFO L175 Difference]: Start difference. First operand has 296 places, 548 transitions, 12590 flow. Second operand 9 states and 161 transitions. [2024-05-12 13:32:42,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 596 transitions, 14415 flow [2024-05-12 13:32:43,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 596 transitions, 14122 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:43,085 INFO L231 Difference]: Finished difference. Result has 299 places, 560 transitions, 13201 flow [2024-05-12 13:32:43,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12308, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13201, PETRI_PLACES=299, PETRI_TRANSITIONS=560} [2024-05-12 13:32:43,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-05-12 13:32:43,086 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 560 transitions, 13201 flow [2024-05-12 13:32:43,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:43,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:43,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:43,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:32:43,086 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:43,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:43,087 INFO L85 PathProgramCache]: Analyzing trace with hash 281066646, now seen corresponding path program 15 times [2024-05-12 13:32:43,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:43,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192400429] [2024-05-12 13:32:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:43,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:43,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:43,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192400429] [2024-05-12 13:32:43,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192400429] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:43,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:43,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:43,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509679752] [2024-05-12 13:32:43,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:43,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:43,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:43,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:43,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:43,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 560 transitions, 13201 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:43,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:43,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:43,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:45,666 INFO L124 PetriNetUnfolderBase]: 3125/6529 cut-off events. [2024-05-12 13:32:45,667 INFO L125 PetriNetUnfolderBase]: For 124062/124063 co-relation queries the response was YES. [2024-05-12 13:32:45,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43750 conditions, 6529 events. 3125/6529 cut-off events. For 124062/124063 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 55038 event pairs, 1081 based on Foata normal form. 18/5939 useless extension candidates. Maximal degree in co-relation 43613. Up to 4170 conditions per place. [2024-05-12 13:32:45,729 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 321 selfloop transitions, 300 changer transitions 0/629 dead transitions. [2024-05-12 13:32:45,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 629 transitions, 15419 flow [2024-05-12 13:32:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-05-12 13:32:45,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-05-12 13:32:45,731 INFO L175 Difference]: Start difference. First operand has 299 places, 560 transitions, 13201 flow. Second operand 10 states and 184 transitions. [2024-05-12 13:32:45,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 629 transitions, 15419 flow [2024-05-12 13:32:46,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 629 transitions, 14683 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:46,274 INFO L231 Difference]: Finished difference. Result has 303 places, 578 transitions, 13664 flow [2024-05-12 13:32:46,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12495, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13664, PETRI_PLACES=303, PETRI_TRANSITIONS=578} [2024-05-12 13:32:46,275 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-05-12 13:32:46,275 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 578 transitions, 13664 flow [2024-05-12 13:32:46,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:46,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:46,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:46,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:32:46,275 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:46,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1831498669, now seen corresponding path program 12 times [2024-05-12 13:32:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:46,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537174752] [2024-05-12 13:32:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:46,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:47,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:47,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537174752] [2024-05-12 13:32:47,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537174752] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:47,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:47,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:47,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265540512] [2024-05-12 13:32:47,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:47,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:47,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:47,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:47,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:47,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:47,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 578 transitions, 13664 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:47,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:47,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:47,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:48,849 INFO L124 PetriNetUnfolderBase]: 3148/6496 cut-off events. [2024-05-12 13:32:48,850 INFO L125 PetriNetUnfolderBase]: For 109927/109928 co-relation queries the response was YES. [2024-05-12 13:32:48,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44044 conditions, 6496 events. 3148/6496 cut-off events. For 109927/109928 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 54443 event pairs, 1136 based on Foata normal form. 3/5862 useless extension candidates. Maximal degree in co-relation 43906. Up to 5023 conditions per place. [2024-05-12 13:32:48,925 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 430 selfloop transitions, 180 changer transitions 0/618 dead transitions. [2024-05-12 13:32:48,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 618 transitions, 15297 flow [2024-05-12 13:32:48,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 13:32:48,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-05-12 13:32:48,926 INFO L175 Difference]: Start difference. First operand has 303 places, 578 transitions, 13664 flow. Second operand 10 states and 167 transitions. [2024-05-12 13:32:48,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 618 transitions, 15297 flow [2024-05-12 13:32:49,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 618 transitions, 14360 flow, removed 71 selfloop flow, removed 10 redundant places. [2024-05-12 13:32:49,686 INFO L231 Difference]: Finished difference. Result has 303 places, 584 transitions, 13244 flow [2024-05-12 13:32:49,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12727, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13244, PETRI_PLACES=303, PETRI_TRANSITIONS=584} [2024-05-12 13:32:49,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-05-12 13:32:49,687 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 584 transitions, 13244 flow [2024-05-12 13:32:49,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:49,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:49,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:49,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:32:49,687 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:49,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:49,688 INFO L85 PathProgramCache]: Analyzing trace with hash 286573176, now seen corresponding path program 16 times [2024-05-12 13:32:49,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:49,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339661906] [2024-05-12 13:32:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:49,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:50,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:50,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339661906] [2024-05-12 13:32:50,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339661906] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:50,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:50,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:50,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837358527] [2024-05-12 13:32:50,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:50,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:50,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:50,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:50,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:50,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 584 transitions, 13244 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:50,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:50,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:50,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:52,573 INFO L124 PetriNetUnfolderBase]: 3408/7262 cut-off events. [2024-05-12 13:32:52,573 INFO L125 PetriNetUnfolderBase]: For 120463/120470 co-relation queries the response was YES. [2024-05-12 13:32:52,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45706 conditions, 7262 events. 3408/7262 cut-off events. For 120463/120470 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 63522 event pairs, 1254 based on Foata normal form. 21/6606 useless extension candidates. Maximal degree in co-relation 45569. Up to 4755 conditions per place. [2024-05-12 13:32:52,657 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 451 selfloop transitions, 172 changer transitions 0/631 dead transitions. [2024-05-12 13:32:52,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 631 transitions, 14935 flow [2024-05-12 13:32:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-05-12 13:32:52,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-05-12 13:32:52,659 INFO L175 Difference]: Start difference. First operand has 303 places, 584 transitions, 13244 flow. Second operand 10 states and 172 transitions. [2024-05-12 13:32:52,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 631 transitions, 14935 flow [2024-05-12 13:32:53,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 631 transitions, 14502 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:53,271 INFO L231 Difference]: Finished difference. Result has 305 places, 589 transitions, 13321 flow [2024-05-12 13:32:53,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12811, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13321, PETRI_PLACES=305, PETRI_TRANSITIONS=589} [2024-05-12 13:32:53,272 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-05-12 13:32:53,272 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 589 transitions, 13321 flow [2024-05-12 13:32:53,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:53,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:53,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:53,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:32:53,272 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:53,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:53,273 INFO L85 PathProgramCache]: Analyzing trace with hash 286573331, now seen corresponding path program 13 times [2024-05-12 13:32:53,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:53,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207637187] [2024-05-12 13:32:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:53,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:54,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:54,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207637187] [2024-05-12 13:32:54,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207637187] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:54,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:54,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:54,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011695993] [2024-05-12 13:32:54,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:54,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:54,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:54,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:54,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:54,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:54,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 589 transitions, 13321 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:54,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:54,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:54,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:55,831 INFO L124 PetriNetUnfolderBase]: 3436/7253 cut-off events. [2024-05-12 13:32:55,832 INFO L125 PetriNetUnfolderBase]: For 112451/112458 co-relation queries the response was YES. [2024-05-12 13:32:55,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46120 conditions, 7253 events. 3436/7253 cut-off events. For 112451/112458 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 63380 event pairs, 1180 based on Foata normal form. 9/6574 useless extension candidates. Maximal degree in co-relation 45984. Up to 5521 conditions per place. [2024-05-12 13:32:55,919 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 437 selfloop transitions, 186 changer transitions 0/631 dead transitions. [2024-05-12 13:32:55,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 631 transitions, 15047 flow [2024-05-12 13:32:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:32:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:32:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 13:32:55,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-05-12 13:32:55,921 INFO L175 Difference]: Start difference. First operand has 305 places, 589 transitions, 13321 flow. Second operand 10 states and 167 transitions. [2024-05-12 13:32:55,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 631 transitions, 15047 flow [2024-05-12 13:32:56,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 631 transitions, 14721 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:56,501 INFO L231 Difference]: Finished difference. Result has 307 places, 597 transitions, 13593 flow [2024-05-12 13:32:56,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12995, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13593, PETRI_PLACES=307, PETRI_TRANSITIONS=597} [2024-05-12 13:32:56,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-05-12 13:32:56,502 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 597 transitions, 13593 flow [2024-05-12 13:32:56,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:56,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:56,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:56,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 13:32:56,503 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:56,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:56,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2027352681, now seen corresponding path program 14 times [2024-05-12 13:32:56,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:56,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663353688] [2024-05-12 13:32:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:56,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:57,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:57,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663353688] [2024-05-12 13:32:57,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663353688] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:57,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:57,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:57,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880263938] [2024-05-12 13:32:57,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:57,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:57,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:32:57,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 597 transitions, 13593 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:57,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:57,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:32:57,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:59,141 INFO L124 PetriNetUnfolderBase]: 3494/7341 cut-off events. [2024-05-12 13:32:59,142 INFO L125 PetriNetUnfolderBase]: For 115287/115291 co-relation queries the response was YES. [2024-05-12 13:32:59,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47302 conditions, 7341 events. 3494/7341 cut-off events. For 115287/115291 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 64036 event pairs, 1545 based on Foata normal form. 4/6636 useless extension candidates. Maximal degree in co-relation 47165. Up to 5995 conditions per place. [2024-05-12 13:32:59,222 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 569 selfloop transitions, 69 changer transitions 0/646 dead transitions. [2024-05-12 13:32:59,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 646 transitions, 15661 flow [2024-05-12 13:32:59,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:32:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:32:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-05-12 13:32:59,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-05-12 13:32:59,224 INFO L175 Difference]: Start difference. First operand has 307 places, 597 transitions, 13593 flow. Second operand 12 states and 180 transitions. [2024-05-12 13:32:59,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 646 transitions, 15661 flow [2024-05-12 13:32:59,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 646 transitions, 15199 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:59,819 INFO L231 Difference]: Finished difference. Result has 311 places, 617 transitions, 13875 flow [2024-05-12 13:32:59,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13143, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13875, PETRI_PLACES=311, PETRI_TRANSITIONS=617} [2024-05-12 13:32:59,820 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-05-12 13:32:59,820 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 617 transitions, 13875 flow [2024-05-12 13:32:59,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:59,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:59,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:59,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 13:32:59,821 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:59,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash 297103345, now seen corresponding path program 1 times [2024-05-12 13:32:59,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:59,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007377481] [2024-05-12 13:32:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:59,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:00,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:00,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007377481] [2024-05-12 13:33:00,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007377481] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:00,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:00,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918690314] [2024-05-12 13:33:00,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:00,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:00,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:00,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:00,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 617 transitions, 13875 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:00,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:00,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:00,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:02,507 INFO L124 PetriNetUnfolderBase]: 3522/7414 cut-off events. [2024-05-12 13:33:02,508 INFO L125 PetriNetUnfolderBase]: For 112315/112319 co-relation queries the response was YES. [2024-05-12 13:33:02,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47223 conditions, 7414 events. 3522/7414 cut-off events. For 112315/112319 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 64884 event pairs, 1555 based on Foata normal form. 3/6706 useless extension candidates. Maximal degree in co-relation 47085. Up to 6077 conditions per place. [2024-05-12 13:33:02,592 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 601 selfloop transitions, 31 changer transitions 0/640 dead transitions. [2024-05-12 13:33:02,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 640 transitions, 15336 flow [2024-05-12 13:33:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:33:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:33:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-05-12 13:33:02,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-05-12 13:33:02,593 INFO L175 Difference]: Start difference. First operand has 311 places, 617 transitions, 13875 flow. Second operand 9 states and 141 transitions. [2024-05-12 13:33:02,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 640 transitions, 15336 flow [2024-05-12 13:33:03,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 640 transitions, 15049 flow, removed 83 selfloop flow, removed 9 redundant places. [2024-05-12 13:33:03,246 INFO L231 Difference]: Finished difference. Result has 311 places, 618 transitions, 13678 flow [2024-05-12 13:33:03,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13588, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13678, PETRI_PLACES=311, PETRI_TRANSITIONS=618} [2024-05-12 13:33:03,247 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-05-12 13:33:03,247 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 618 transitions, 13678 flow [2024-05-12 13:33:03,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:03,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:03,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:03,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 13:33:03,248 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:03,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash -369021067, now seen corresponding path program 2 times [2024-05-12 13:33:03,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:03,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205115235] [2024-05-12 13:33:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:04,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:04,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205115235] [2024-05-12 13:33:04,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205115235] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:04,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:04,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:04,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876066644] [2024-05-12 13:33:04,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:04,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:04,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:04,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:04,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:04,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:04,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 618 transitions, 13678 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:04,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:04,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:04,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:05,856 INFO L124 PetriNetUnfolderBase]: 3539/7453 cut-off events. [2024-05-12 13:33:05,856 INFO L125 PetriNetUnfolderBase]: For 112481/112485 co-relation queries the response was YES. [2024-05-12 13:33:05,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47178 conditions, 7453 events. 3539/7453 cut-off events. For 112481/112485 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 65307 event pairs, 1563 based on Foata normal form. 3/6742 useless extension candidates. Maximal degree in co-relation 47039. Up to 6132 conditions per place. [2024-05-12 13:33:05,944 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 610 selfloop transitions, 20 changer transitions 0/638 dead transitions. [2024-05-12 13:33:05,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 638 transitions, 15083 flow [2024-05-12 13:33:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:33:05,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:33:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-05-12 13:33:05,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2024-05-12 13:33:05,946 INFO L175 Difference]: Start difference. First operand has 311 places, 618 transitions, 13678 flow. Second operand 9 states and 137 transitions. [2024-05-12 13:33:05,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 638 transitions, 15083 flow [2024-05-12 13:33:06,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 638 transitions, 15007 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-05-12 13:33:06,537 INFO L231 Difference]: Finished difference. Result has 313 places, 619 transitions, 13672 flow [2024-05-12 13:33:06,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13602, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13672, PETRI_PLACES=313, PETRI_TRANSITIONS=619} [2024-05-12 13:33:06,538 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-05-12 13:33:06,539 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 619 transitions, 13672 flow [2024-05-12 13:33:06,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:06,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:06,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:06,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 13:33:06,539 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:06,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash -369236393, now seen corresponding path program 15 times [2024-05-12 13:33:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:06,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703240201] [2024-05-12 13:33:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:06,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:07,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:07,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703240201] [2024-05-12 13:33:07,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703240201] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:07,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:07,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:07,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956020498] [2024-05-12 13:33:07,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:07,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:07,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:07,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:07,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:07,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:07,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 619 transitions, 13672 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:07,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:07,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:07,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:09,251 INFO L124 PetriNetUnfolderBase]: 3594/7530 cut-off events. [2024-05-12 13:33:09,251 INFO L125 PetriNetUnfolderBase]: For 118269/118273 co-relation queries the response was YES. [2024-05-12 13:33:09,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48007 conditions, 7530 events. 3594/7530 cut-off events. For 118269/118273 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 65779 event pairs, 1548 based on Foata normal form. 3/6796 useless extension candidates. Maximal degree in co-relation 47867. Up to 6101 conditions per place. [2024-05-12 13:33:09,343 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 570 selfloop transitions, 85 changer transitions 0/663 dead transitions. [2024-05-12 13:33:09,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 663 transitions, 15681 flow [2024-05-12 13:33:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:09,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 13:33:09,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-05-12 13:33:09,344 INFO L175 Difference]: Start difference. First operand has 313 places, 619 transitions, 13672 flow. Second operand 10 states and 156 transitions. [2024-05-12 13:33:09,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 663 transitions, 15681 flow [2024-05-12 13:33:09,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 663 transitions, 15571 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-05-12 13:33:09,966 INFO L231 Difference]: Finished difference. Result has 315 places, 633 transitions, 14118 flow [2024-05-12 13:33:09,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13562, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14118, PETRI_PLACES=315, PETRI_TRANSITIONS=633} [2024-05-12 13:33:09,967 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-05-12 13:33:09,967 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 633 transitions, 14118 flow [2024-05-12 13:33:09,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:09,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:09,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:09,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 13:33:09,967 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:09,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:09,968 INFO L85 PathProgramCache]: Analyzing trace with hash -369236548, now seen corresponding path program 17 times [2024-05-12 13:33:09,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:09,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839584130] [2024-05-12 13:33:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:09,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:10,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839584130] [2024-05-12 13:33:10,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839584130] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:10,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:10,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:10,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933025668] [2024-05-12 13:33:10,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:10,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:10,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:10,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:10,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:10,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 633 transitions, 14118 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:10,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:10,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:10,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:12,955 INFO L124 PetriNetUnfolderBase]: 3854/8250 cut-off events. [2024-05-12 13:33:12,955 INFO L125 PetriNetUnfolderBase]: For 138906/138910 co-relation queries the response was YES. [2024-05-12 13:33:13,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50371 conditions, 8250 events. 3854/8250 cut-off events. For 138906/138910 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 74267 event pairs, 1690 based on Foata normal form. 15/7482 useless extension candidates. Maximal degree in co-relation 50231. Up to 6144 conditions per place. [2024-05-12 13:33:13,050 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 601 selfloop transitions, 65 changer transitions 0/674 dead transitions. [2024-05-12 13:33:13,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 674 transitions, 15842 flow [2024-05-12 13:33:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-05-12 13:33:13,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-05-12 13:33:13,052 INFO L175 Difference]: Start difference. First operand has 315 places, 633 transitions, 14118 flow. Second operand 10 states and 160 transitions. [2024-05-12 13:33:13,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 674 transitions, 15842 flow [2024-05-12 13:33:13,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 674 transitions, 15677 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-05-12 13:33:13,686 INFO L231 Difference]: Finished difference. Result has 319 places, 638 transitions, 14243 flow [2024-05-12 13:33:13,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13953, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14243, PETRI_PLACES=319, PETRI_TRANSITIONS=638} [2024-05-12 13:33:13,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-05-12 13:33:13,687 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 638 transitions, 14243 flow [2024-05-12 13:33:13,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:13,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:13,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:13,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 13:33:13,688 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:13,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:13,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1126419034, now seen corresponding path program 18 times [2024-05-12 13:33:13,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:13,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273853921] [2024-05-12 13:33:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:14,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:14,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273853921] [2024-05-12 13:33:14,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273853921] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:14,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:14,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:14,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123571820] [2024-05-12 13:33:14,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:14,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:14,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:14,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:14,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:14,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 638 transitions, 14243 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:14,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:14,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:14,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:16,653 INFO L124 PetriNetUnfolderBase]: 3967/8536 cut-off events. [2024-05-12 13:33:16,653 INFO L125 PetriNetUnfolderBase]: For 138605/138609 co-relation queries the response was YES. [2024-05-12 13:33:16,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50985 conditions, 8536 events. 3967/8536 cut-off events. For 138605/138609 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 77699 event pairs, 1769 based on Foata normal form. 18/7750 useless extension candidates. Maximal degree in co-relation 50843. Up to 6267 conditions per place. [2024-05-12 13:33:16,746 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 571 selfloop transitions, 96 changer transitions 0/675 dead transitions. [2024-05-12 13:33:16,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 675 transitions, 15877 flow [2024-05-12 13:33:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 13:33:16,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-05-12 13:33:16,747 INFO L175 Difference]: Start difference. First operand has 319 places, 638 transitions, 14243 flow. Second operand 10 states and 165 transitions. [2024-05-12 13:33:16,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 675 transitions, 15877 flow [2024-05-12 13:33:17,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 675 transitions, 15691 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-05-12 13:33:17,491 INFO L231 Difference]: Finished difference. Result has 322 places, 638 transitions, 14361 flow [2024-05-12 13:33:17,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14057, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14361, PETRI_PLACES=322, PETRI_TRANSITIONS=638} [2024-05-12 13:33:17,494 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-05-12 13:33:17,494 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 638 transitions, 14361 flow [2024-05-12 13:33:17,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:17,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:17,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:17,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 13:33:17,495 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:17,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash -84814927, now seen corresponding path program 3 times [2024-05-12 13:33:17,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:17,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855872594] [2024-05-12 13:33:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:17,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855872594] [2024-05-12 13:33:18,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855872594] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:18,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:18,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:18,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620467744] [2024-05-12 13:33:18,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:18,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:18,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:18,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:18,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 638 transitions, 14361 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:18,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:18,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:18,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:20,449 INFO L124 PetriNetUnfolderBase]: 3984/8524 cut-off events. [2024-05-12 13:33:20,449 INFO L125 PetriNetUnfolderBase]: For 121498/121502 co-relation queries the response was YES. [2024-05-12 13:33:20,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51226 conditions, 8524 events. 3984/8524 cut-off events. For 121498/121502 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 77625 event pairs, 1829 based on Foata normal form. 3/7714 useless extension candidates. Maximal degree in co-relation 51082. Up to 6997 conditions per place. [2024-05-12 13:33:20,540 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 635 selfloop transitions, 16 changer transitions 0/659 dead transitions. [2024-05-12 13:33:20,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 659 transitions, 15803 flow [2024-05-12 13:33:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:33:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:33:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-05-12 13:33:20,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-05-12 13:33:20,541 INFO L175 Difference]: Start difference. First operand has 322 places, 638 transitions, 14361 flow. Second operand 9 states and 138 transitions. [2024-05-12 13:33:20,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 659 transitions, 15803 flow [2024-05-12 13:33:21,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 659 transitions, 15395 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-05-12 13:33:21,231 INFO L231 Difference]: Finished difference. Result has 322 places, 639 transitions, 14016 flow [2024-05-12 13:33:21,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13953, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14016, PETRI_PLACES=322, PETRI_TRANSITIONS=639} [2024-05-12 13:33:21,232 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-05-12 13:33:21,232 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 639 transitions, 14016 flow [2024-05-12 13:33:21,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:21,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:21,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:21,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 13:33:21,232 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:21,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:21,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1416963749, now seen corresponding path program 16 times [2024-05-12 13:33:21,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:21,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622969852] [2024-05-12 13:33:21,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:21,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:21,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:21,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622969852] [2024-05-12 13:33:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622969852] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:21,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:21,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:21,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581967732] [2024-05-12 13:33:21,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:21,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:21,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:21,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:22,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:22,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 639 transitions, 14016 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:22,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:22,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:22,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:24,245 INFO L124 PetriNetUnfolderBase]: 3980/8518 cut-off events. [2024-05-12 13:33:24,245 INFO L125 PetriNetUnfolderBase]: For 111026/111030 co-relation queries the response was YES. [2024-05-12 13:33:24,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50518 conditions, 8518 events. 3980/8518 cut-off events. For 111026/111030 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 77593 event pairs, 1826 based on Foata normal form. 3/7707 useless extension candidates. Maximal degree in co-relation 50374. Up to 6978 conditions per place. [2024-05-12 13:33:24,344 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 623 selfloop transitions, 27 changer transitions 0/658 dead transitions. [2024-05-12 13:33:24,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 658 transitions, 15424 flow [2024-05-12 13:33:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:24,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-05-12 13:33:24,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-05-12 13:33:24,346 INFO L175 Difference]: Start difference. First operand has 322 places, 639 transitions, 14016 flow. Second operand 10 states and 150 transitions. [2024-05-12 13:33:24,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 658 transitions, 15424 flow [2024-05-12 13:33:24,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 658 transitions, 15263 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-05-12 13:33:24,990 INFO L231 Difference]: Finished difference. Result has 323 places, 639 transitions, 13920 flow [2024-05-12 13:33:24,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13855, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13920, PETRI_PLACES=323, PETRI_TRANSITIONS=639} [2024-05-12 13:33:24,991 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-05-12 13:33:24,991 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 639 transitions, 13920 flow [2024-05-12 13:33:24,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:24,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:24,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:24,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 13:33:24,991 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:24,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:24,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1126419189, now seen corresponding path program 17 times [2024-05-12 13:33:24,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:24,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142497632] [2024-05-12 13:33:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:24,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:25,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:25,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142497632] [2024-05-12 13:33:25,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142497632] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:25,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:25,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:25,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632993496] [2024-05-12 13:33:25,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:25,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:25,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:25,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:25,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:25,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 639 transitions, 13920 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:25,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:25,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:25,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:28,078 INFO L124 PetriNetUnfolderBase]: 3976/8510 cut-off events. [2024-05-12 13:33:28,079 INFO L125 PetriNetUnfolderBase]: For 105952/105956 co-relation queries the response was YES. [2024-05-12 13:33:28,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49992 conditions, 8510 events. 3976/8510 cut-off events. For 105952/105956 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 77451 event pairs, 1822 based on Foata normal form. 3/7699 useless extension candidates. Maximal degree in co-relation 49849. Up to 6876 conditions per place. [2024-05-12 13:33:28,172 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 561 selfloop transitions, 101 changer transitions 0/670 dead transitions. [2024-05-12 13:33:28,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 670 transitions, 15508 flow [2024-05-12 13:33:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:33:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:33:28,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-05-12 13:33:28,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-05-12 13:33:28,174 INFO L175 Difference]: Start difference. First operand has 323 places, 639 transitions, 13920 flow. Second operand 11 states and 171 transitions. [2024-05-12 13:33:28,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 670 transitions, 15508 flow [2024-05-12 13:33:28,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 670 transitions, 15356 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-05-12 13:33:28,836 INFO L231 Difference]: Finished difference. Result has 325 places, 639 transitions, 13984 flow [2024-05-12 13:33:28,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13768, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13984, PETRI_PLACES=325, PETRI_TRANSITIONS=639} [2024-05-12 13:33:28,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 284 predicate places. [2024-05-12 13:33:28,837 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 639 transitions, 13984 flow [2024-05-12 13:33:28,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:28,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:28,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:28,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 13:33:28,838 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:28,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:28,838 INFO L85 PathProgramCache]: Analyzing trace with hash -74369167, now seen corresponding path program 4 times [2024-05-12 13:33:28,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:28,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242831252] [2024-05-12 13:33:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:28,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:29,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:29,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242831252] [2024-05-12 13:33:29,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242831252] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:29,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:29,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:29,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449763255] [2024-05-12 13:33:29,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:29,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:29,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:29,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:29,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:29,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 639 transitions, 13984 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:29,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:29,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:29,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:31,765 INFO L124 PetriNetUnfolderBase]: 3977/8515 cut-off events. [2024-05-12 13:33:31,765 INFO L125 PetriNetUnfolderBase]: For 104990/104994 co-relation queries the response was YES. [2024-05-12 13:33:31,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50025 conditions, 8515 events. 3977/8515 cut-off events. For 104990/104994 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 77459 event pairs, 1812 based on Foata normal form. 3/7737 useless extension candidates. Maximal degree in co-relation 49881. Up to 6983 conditions per place. [2024-05-12 13:33:31,861 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 641 selfloop transitions, 14 changer transitions 0/663 dead transitions. [2024-05-12 13:33:31,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 663 transitions, 15454 flow [2024-05-12 13:33:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:33:31,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:33:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-05-12 13:33:31,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2024-05-12 13:33:31,869 INFO L175 Difference]: Start difference. First operand has 325 places, 639 transitions, 13984 flow. Second operand 9 states and 139 transitions. [2024-05-12 13:33:31,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 663 transitions, 15454 flow [2024-05-12 13:33:32,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 663 transitions, 14612 flow, removed 48 selfloop flow, removed 11 redundant places. [2024-05-12 13:33:32,542 INFO L231 Difference]: Finished difference. Result has 324 places, 642 transitions, 13223 flow [2024-05-12 13:33:32,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13142, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13223, PETRI_PLACES=324, PETRI_TRANSITIONS=642} [2024-05-12 13:33:32,545 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-05-12 13:33:32,545 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 642 transitions, 13223 flow [2024-05-12 13:33:32,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:32,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:32,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:32,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 13:33:32,545 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:32,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:32,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1344995862, now seen corresponding path program 1 times [2024-05-12 13:33:32,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:32,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393969580] [2024-05-12 13:33:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:33,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393969580] [2024-05-12 13:33:33,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393969580] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:33,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:33,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:33,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647591271] [2024-05-12 13:33:33,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:33,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:33,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:33,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:33,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:33,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:33,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 642 transitions, 13223 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:33,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:33,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:33,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:35,788 INFO L124 PetriNetUnfolderBase]: 4635/10096 cut-off events. [2024-05-12 13:33:35,789 INFO L125 PetriNetUnfolderBase]: For 127739/127743 co-relation queries the response was YES. [2024-05-12 13:33:35,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54505 conditions, 10096 events. 4635/10096 cut-off events. For 127739/127743 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 96775 event pairs, 1933 based on Foata normal form. 12/9207 useless extension candidates. Maximal degree in co-relation 54361. Up to 4426 conditions per place. [2024-05-12 13:33:35,924 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 385 selfloop transitions, 303 changer transitions 0/696 dead transitions. [2024-05-12 13:33:35,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 696 transitions, 15000 flow [2024-05-12 13:33:35,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:33:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:33:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-05-12 13:33:35,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012285012285013 [2024-05-12 13:33:35,925 INFO L175 Difference]: Start difference. First operand has 324 places, 642 transitions, 13223 flow. Second operand 11 states and 204 transitions. [2024-05-12 13:33:35,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 696 transitions, 15000 flow [2024-05-12 13:33:36,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 696 transitions, 14937 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-05-12 13:33:36,821 INFO L231 Difference]: Finished difference. Result has 328 places, 642 transitions, 13773 flow [2024-05-12 13:33:36,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13162, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13773, PETRI_PLACES=328, PETRI_TRANSITIONS=642} [2024-05-12 13:33:36,822 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-05-12 13:33:36,822 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 642 transitions, 13773 flow [2024-05-12 13:33:36,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:36,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:36,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:36,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 13:33:36,822 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:36,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1458505710, now seen corresponding path program 2 times [2024-05-12 13:33:36,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:36,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47212145] [2024-05-12 13:33:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:36,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:37,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:37,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47212145] [2024-05-12 13:33:37,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47212145] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:37,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:37,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:37,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183918005] [2024-05-12 13:33:37,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:37,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:37,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:37,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:37,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:37,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:37,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 642 transitions, 13773 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:37,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:37,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:37,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:40,077 INFO L124 PetriNetUnfolderBase]: 4800/10571 cut-off events. [2024-05-12 13:33:40,077 INFO L125 PetriNetUnfolderBase]: For 148700/148704 co-relation queries the response was YES. [2024-05-12 13:33:40,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57249 conditions, 10571 events. 4800/10571 cut-off events. For 148700/148704 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 103219 event pairs, 2095 based on Foata normal form. 12/9625 useless extension candidates. Maximal degree in co-relation 57105. Up to 7699 conditions per place. [2024-05-12 13:33:40,201 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 381 selfloop transitions, 301 changer transitions 0/690 dead transitions. [2024-05-12 13:33:40,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 690 transitions, 15534 flow [2024-05-12 13:33:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:33:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:33:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-05-12 13:33:40,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-05-12 13:33:40,203 INFO L175 Difference]: Start difference. First operand has 328 places, 642 transitions, 13773 flow. Second operand 11 states and 197 transitions. [2024-05-12 13:33:40,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 690 transitions, 15534 flow [2024-05-12 13:33:41,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 690 transitions, 14918 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-05-12 13:33:41,100 INFO L231 Difference]: Finished difference. Result has 330 places, 644 transitions, 13821 flow [2024-05-12 13:33:41,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13161, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13821, PETRI_PLACES=330, PETRI_TRANSITIONS=644} [2024-05-12 13:33:41,101 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 289 predicate places. [2024-05-12 13:33:41,101 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 644 transitions, 13821 flow [2024-05-12 13:33:41,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:41,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:41,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:41,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 13:33:41,102 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:41,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1458510360, now seen corresponding path program 3 times [2024-05-12 13:33:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305971054] [2024-05-12 13:33:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:41,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:42,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:42,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305971054] [2024-05-12 13:33:42,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305971054] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:42,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:42,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:42,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369666872] [2024-05-12 13:33:42,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:42,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:42,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:42,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:42,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:42,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:42,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 644 transitions, 13821 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:42,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:42,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:42,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:44,452 INFO L124 PetriNetUnfolderBase]: 4254/9109 cut-off events. [2024-05-12 13:33:44,452 INFO L125 PetriNetUnfolderBase]: For 135602/135609 co-relation queries the response was YES. [2024-05-12 13:33:44,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51601 conditions, 9109 events. 4254/9109 cut-off events. For 135602/135609 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 83899 event pairs, 1739 based on Foata normal form. 27/8280 useless extension candidates. Maximal degree in co-relation 51456. Up to 6531 conditions per place. [2024-05-12 13:33:44,568 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 372 selfloop transitions, 310 changer transitions 0/690 dead transitions. [2024-05-12 13:33:44,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 690 transitions, 15443 flow [2024-05-12 13:33:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-05-12 13:33:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-05-12 13:33:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 234 transitions. [2024-05-12 13:33:44,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2024-05-12 13:33:44,569 INFO L175 Difference]: Start difference. First operand has 330 places, 644 transitions, 13821 flow. Second operand 14 states and 234 transitions. [2024-05-12 13:33:44,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 690 transitions, 15443 flow [2024-05-12 13:33:45,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 690 transitions, 14854 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:33:45,277 INFO L231 Difference]: Finished difference. Result has 336 places, 645 transitions, 13882 flow [2024-05-12 13:33:45,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13232, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13882, PETRI_PLACES=336, PETRI_TRANSITIONS=645} [2024-05-12 13:33:45,278 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-05-12 13:33:45,278 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 645 transitions, 13882 flow [2024-05-12 13:33:45,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:45,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:45,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:45,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 13:33:45,279 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:45,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:45,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1458390390, now seen corresponding path program 4 times [2024-05-12 13:33:45,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:45,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468561385] [2024-05-12 13:33:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:45,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:46,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:46,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468561385] [2024-05-12 13:33:46,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468561385] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:46,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:46,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309071225] [2024-05-12 13:33:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:46,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:46,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:46,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:46,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:46,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:46,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 645 transitions, 13882 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:46,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:46,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:46,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:48,439 INFO L124 PetriNetUnfolderBase]: 4372/9440 cut-off events. [2024-05-12 13:33:48,440 INFO L125 PetriNetUnfolderBase]: For 133406/133413 co-relation queries the response was YES. [2024-05-12 13:33:48,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53296 conditions, 9440 events. 4372/9440 cut-off events. For 133406/133413 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 87958 event pairs, 1792 based on Foata normal form. 15/8579 useless extension candidates. Maximal degree in co-relation 53150. Up to 6010 conditions per place. [2024-05-12 13:33:48,546 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 391 selfloop transitions, 300 changer transitions 0/699 dead transitions. [2024-05-12 13:33:48,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 699 transitions, 15671 flow [2024-05-12 13:33:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:33:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:33:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-05-12 13:33:48,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-05-12 13:33:48,547 INFO L175 Difference]: Start difference. First operand has 336 places, 645 transitions, 13882 flow. Second operand 12 states and 219 transitions. [2024-05-12 13:33:48,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 699 transitions, 15671 flow [2024-05-12 13:33:49,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 699 transitions, 15236 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-05-12 13:33:49,591 INFO L231 Difference]: Finished difference. Result has 337 places, 645 transitions, 14051 flow [2024-05-12 13:33:49,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13447, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14051, PETRI_PLACES=337, PETRI_TRANSITIONS=645} [2024-05-12 13:33:49,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-05-12 13:33:49,592 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 645 transitions, 14051 flow [2024-05-12 13:33:49,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:49,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:49,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:49,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 13:33:49,593 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:49,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:49,593 INFO L85 PathProgramCache]: Analyzing trace with hash -144546826, now seen corresponding path program 5 times [2024-05-12 13:33:49,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:49,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307871889] [2024-05-12 13:33:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:49,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:50,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:50,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307871889] [2024-05-12 13:33:50,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307871889] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:50,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:50,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:50,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118563748] [2024-05-12 13:33:50,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:50,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:50,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:50,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:50,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 645 transitions, 14051 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:50,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:50,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:50,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:53,224 INFO L124 PetriNetUnfolderBase]: 4524/9724 cut-off events. [2024-05-12 13:33:53,224 INFO L125 PetriNetUnfolderBase]: For 139459/139466 co-relation queries the response was YES. [2024-05-12 13:33:53,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54626 conditions, 9724 events. 4524/9724 cut-off events. For 139459/139466 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 91278 event pairs, 1931 based on Foata normal form. 15/8852 useless extension candidates. Maximal degree in co-relation 54480. Up to 7167 conditions per place. [2024-05-12 13:33:53,314 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 542 selfloop transitions, 139 changer transitions 0/689 dead transitions. [2024-05-12 13:33:53,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 689 transitions, 15688 flow [2024-05-12 13:33:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:33:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:33:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-05-12 13:33:53,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-05-12 13:33:53,315 INFO L175 Difference]: Start difference. First operand has 337 places, 645 transitions, 14051 flow. Second operand 11 states and 195 transitions. [2024-05-12 13:33:53,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 689 transitions, 15688 flow [2024-05-12 13:33:54,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 689 transitions, 15090 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 13:33:54,141 INFO L231 Difference]: Finished difference. Result has 339 places, 647 transitions, 13799 flow [2024-05-12 13:33:54,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13453, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13799, PETRI_PLACES=339, PETRI_TRANSITIONS=647} [2024-05-12 13:33:54,142 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-05-12 13:33:54,142 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 647 transitions, 13799 flow [2024-05-12 13:33:54,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:54,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:54,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:54,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 13:33:54,143 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:54,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:54,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1933364888, now seen corresponding path program 6 times [2024-05-12 13:33:54,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:54,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617010743] [2024-05-12 13:33:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:54,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:54,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:54,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617010743] [2024-05-12 13:33:54,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617010743] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:54,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:54,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:54,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113460811] [2024-05-12 13:33:54,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:54,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:54,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:54,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:55,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:55,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 647 transitions, 13799 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:55,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:55,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:55,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:57,525 INFO L124 PetriNetUnfolderBase]: 4514/9711 cut-off events. [2024-05-12 13:33:57,525 INFO L125 PetriNetUnfolderBase]: For 126548/126555 co-relation queries the response was YES. [2024-05-12 13:33:57,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53750 conditions, 9711 events. 4514/9711 cut-off events. For 126548/126555 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 91379 event pairs, 1782 based on Foata normal form. 15/8870 useless extension candidates. Maximal degree in co-relation 53602. Up to 7311 conditions per place. [2024-05-12 13:33:57,624 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 529 selfloop transitions, 155 changer transitions 0/692 dead transitions. [2024-05-12 13:33:57,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 692 transitions, 15415 flow [2024-05-12 13:33:57,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:33:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:33:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-05-12 13:33:57,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-05-12 13:33:57,625 INFO L175 Difference]: Start difference. First operand has 339 places, 647 transitions, 13799 flow. Second operand 11 states and 198 transitions. [2024-05-12 13:33:57,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 692 transitions, 15415 flow [2024-05-12 13:33:58,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 692 transitions, 15164 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 13:33:58,377 INFO L231 Difference]: Finished difference. Result has 343 places, 647 transitions, 13862 flow [2024-05-12 13:33:58,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13548, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13862, PETRI_PLACES=343, PETRI_TRANSITIONS=647} [2024-05-12 13:33:58,378 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 302 predicate places. [2024-05-12 13:33:58,378 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 647 transitions, 13862 flow [2024-05-12 13:33:58,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:58,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:58,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:58,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 13:33:58,378 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:58,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1231292712, now seen corresponding path program 7 times [2024-05-12 13:33:58,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:58,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389796333] [2024-05-12 13:33:58,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:59,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:59,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389796333] [2024-05-12 13:33:59,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389796333] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:59,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:59,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:33:59,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344801146] [2024-05-12 13:33:59,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:59,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:33:59,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:59,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:33:59,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:33:59,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:33:59,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 647 transitions, 13862 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:59,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:59,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:33:59,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:02,171 INFO L124 PetriNetUnfolderBase]: 5498/12474 cut-off events. [2024-05-12 13:34:02,171 INFO L125 PetriNetUnfolderBase]: For 146340/146344 co-relation queries the response was YES. [2024-05-12 13:34:02,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62038 conditions, 12474 events. 5498/12474 cut-off events. For 146340/146344 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 127564 event pairs, 1802 based on Foata normal form. 9/11480 useless extension candidates. Maximal degree in co-relation 61889. Up to 6061 conditions per place. [2024-05-12 13:34:02,325 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 364 selfloop transitions, 334 changer transitions 0/706 dead transitions. [2024-05-12 13:34:02,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 706 transitions, 15701 flow [2024-05-12 13:34:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-05-12 13:34:02,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108108108108108 [2024-05-12 13:34:02,327 INFO L175 Difference]: Start difference. First operand has 343 places, 647 transitions, 13862 flow. Second operand 10 states and 189 transitions. [2024-05-12 13:34:02,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 706 transitions, 15701 flow [2024-05-12 13:34:03,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 706 transitions, 15448 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-05-12 13:34:03,316 INFO L231 Difference]: Finished difference. Result has 345 places, 648 transitions, 14613 flow [2024-05-12 13:34:03,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13610, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14613, PETRI_PLACES=345, PETRI_TRANSITIONS=648} [2024-05-12 13:34:03,317 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-05-12 13:34:03,317 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 648 transitions, 14613 flow [2024-05-12 13:34:03,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:03,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:03,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:03,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 13:34:03,318 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:03,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:03,318 INFO L85 PathProgramCache]: Analyzing trace with hash 264301084, now seen corresponding path program 8 times [2024-05-12 13:34:03,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:03,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107481827] [2024-05-12 13:34:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:03,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:04,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:04,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107481827] [2024-05-12 13:34:04,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107481827] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:04,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:34:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794663626] [2024-05-12 13:34:04,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:04,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:34:04,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:34:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:34:04,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:34:04,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 648 transitions, 14613 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:04,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:04,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:34:04,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:07,523 INFO L124 PetriNetUnfolderBase]: 6140/13674 cut-off events. [2024-05-12 13:34:07,523 INFO L125 PetriNetUnfolderBase]: For 185913/185917 co-relation queries the response was YES. [2024-05-12 13:34:07,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68680 conditions, 13674 events. 6140/13674 cut-off events. For 185913/185917 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 141867 event pairs, 2897 based on Foata normal form. 9/12609 useless extension candidates. Maximal degree in co-relation 68532. Up to 6296 conditions per place. [2024-05-12 13:34:07,641 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 348 selfloop transitions, 378 changer transitions 0/734 dead transitions. [2024-05-12 13:34:07,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 734 transitions, 17008 flow [2024-05-12 13:34:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-05-12 13:34:07,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-05-12 13:34:07,643 INFO L175 Difference]: Start difference. First operand has 345 places, 648 transitions, 14613 flow. Second operand 10 states and 190 transitions. [2024-05-12 13:34:07,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 734 transitions, 17008 flow [2024-05-12 13:34:08,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 734 transitions, 16595 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-05-12 13:34:09,006 INFO L231 Difference]: Finished difference. Result has 348 places, 680 transitions, 15580 flow [2024-05-12 13:34:09,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14250, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15580, PETRI_PLACES=348, PETRI_TRANSITIONS=680} [2024-05-12 13:34:09,006 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 307 predicate places. [2024-05-12 13:34:09,007 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 680 transitions, 15580 flow [2024-05-12 13:34:09,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:09,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:09,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:09,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 13:34:09,007 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:09,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:09,008 INFO L85 PathProgramCache]: Analyzing trace with hash -871211820, now seen corresponding path program 9 times [2024-05-12 13:34:09,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:09,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301439984] [2024-05-12 13:34:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:09,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:09,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:09,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301439984] [2024-05-12 13:34:09,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301439984] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:09,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:09,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:34:09,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546606692] [2024-05-12 13:34:09,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:09,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:34:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:09,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:34:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:34:10,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:34:10,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 680 transitions, 15580 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:10,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:10,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:34:10,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:14,127 INFO L124 PetriNetUnfolderBase]: 6320/14403 cut-off events. [2024-05-12 13:34:14,128 INFO L125 PetriNetUnfolderBase]: For 207975/207982 co-relation queries the response was YES. [2024-05-12 13:34:14,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71982 conditions, 14403 events. 6320/14403 cut-off events. For 207975/207982 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 152435 event pairs, 3050 based on Foata normal form. 10/13261 useless extension candidates. Maximal degree in co-relation 71832. Up to 8370 conditions per place. [2024-05-12 13:34:14,263 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 323 selfloop transitions, 392 changer transitions 0/723 dead transitions. [2024-05-12 13:34:14,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 723 transitions, 17375 flow [2024-05-12 13:34:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-05-12 13:34:14,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-05-12 13:34:14,265 INFO L175 Difference]: Start difference. First operand has 348 places, 680 transitions, 15580 flow. Second operand 10 states and 187 transitions. [2024-05-12 13:34:14,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 723 transitions, 17375 flow [2024-05-12 13:34:15,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 723 transitions, 16909 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-05-12 13:34:15,643 INFO L231 Difference]: Finished difference. Result has 351 places, 680 transitions, 15930 flow [2024-05-12 13:34:15,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15136, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=392, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15930, PETRI_PLACES=351, PETRI_TRANSITIONS=680} [2024-05-12 13:34:15,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-05-12 13:34:15,644 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 680 transitions, 15930 flow [2024-05-12 13:34:15,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:15,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:15,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:15,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 13:34:15,644 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:15,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash 322513504, now seen corresponding path program 10 times [2024-05-12 13:34:15,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:15,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380939150] [2024-05-12 13:34:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:16,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:16,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380939150] [2024-05-12 13:34:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380939150] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:16,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:16,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:16,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028136601] [2024-05-12 13:34:16,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:16,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:16,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:16,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:16,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:16,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:34:16,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 680 transitions, 15930 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:16,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:16,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:34:16,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:20,441 INFO L124 PetriNetUnfolderBase]: 5930/13220 cut-off events. [2024-05-12 13:34:20,442 INFO L125 PetriNetUnfolderBase]: For 183310/183314 co-relation queries the response was YES. [2024-05-12 13:34:20,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67933 conditions, 13220 events. 5930/13220 cut-off events. For 183310/183314 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 136242 event pairs, 3002 based on Foata normal form. 14/12168 useless extension candidates. Maximal degree in co-relation 67783. Up to 9463 conditions per place. [2024-05-12 13:34:20,575 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 283 selfloop transitions, 446 changer transitions 0/737 dead transitions. [2024-05-12 13:34:20,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 737 transitions, 18090 flow [2024-05-12 13:34:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:34:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:34:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-05-12 13:34:20,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-05-12 13:34:20,577 INFO L175 Difference]: Start difference. First operand has 351 places, 680 transitions, 15930 flow. Second operand 11 states and 190 transitions. [2024-05-12 13:34:20,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 737 transitions, 18090 flow [2024-05-12 13:34:21,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 737 transitions, 17233 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-05-12 13:34:21,837 INFO L231 Difference]: Finished difference. Result has 352 places, 699 transitions, 16716 flow [2024-05-12 13:34:21,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15121, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16716, PETRI_PLACES=352, PETRI_TRANSITIONS=699} [2024-05-12 13:34:21,838 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-05-12 13:34:21,838 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 699 transitions, 16716 flow [2024-05-12 13:34:21,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:21,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:21,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:21,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 13:34:21,839 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:21,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash 322393534, now seen corresponding path program 11 times [2024-05-12 13:34:21,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:21,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792165875] [2024-05-12 13:34:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:21,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:23,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:23,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792165875] [2024-05-12 13:34:23,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792165875] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:23,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:23,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:23,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942077657] [2024-05-12 13:34:23,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:23,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:23,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:34:23,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 699 transitions, 16716 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:23,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:23,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:34:23,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:27,342 INFO L124 PetriNetUnfolderBase]: 6016/13687 cut-off events. [2024-05-12 13:34:27,342 INFO L125 PetriNetUnfolderBase]: For 174382/174389 co-relation queries the response was YES. [2024-05-12 13:34:27,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69751 conditions, 13687 events. 6016/13687 cut-off events. For 174382/174389 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 142784 event pairs, 3073 based on Foata normal form. 15/12588 useless extension candidates. Maximal degree in co-relation 69602. Up to 7256 conditions per place. [2024-05-12 13:34:27,479 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 345 selfloop transitions, 402 changer transitions 0/755 dead transitions. [2024-05-12 13:34:27,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 755 transitions, 18521 flow [2024-05-12 13:34:27,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 13:34:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 13:34:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 238 transitions. [2024-05-12 13:34:27,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49480249480249483 [2024-05-12 13:34:27,480 INFO L175 Difference]: Start difference. First operand has 352 places, 699 transitions, 16716 flow. Second operand 13 states and 238 transitions. [2024-05-12 13:34:27,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 755 transitions, 18521 flow [2024-05-12 13:34:28,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 755 transitions, 17983 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-05-12 13:34:28,519 INFO L231 Difference]: Finished difference. Result has 359 places, 700 transitions, 17049 flow [2024-05-12 13:34:28,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16182, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17049, PETRI_PLACES=359, PETRI_TRANSITIONS=700} [2024-05-12 13:34:28,520 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-05-12 13:34:28,520 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 700 transitions, 17049 flow [2024-05-12 13:34:28,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:28,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:28,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:28,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 13:34:28,521 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:28,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:28,521 INFO L85 PathProgramCache]: Analyzing trace with hash -682054502, now seen corresponding path program 12 times [2024-05-12 13:34:28,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:28,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743967395] [2024-05-12 13:34:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:28,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:29,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:29,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743967395] [2024-05-12 13:34:29,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743967395] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:29,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:29,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448491169] [2024-05-12 13:34:29,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:29,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:29,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:29,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:34:29,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 700 transitions, 17049 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:29,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:29,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:34:29,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:33,652 INFO L124 PetriNetUnfolderBase]: 6550/14569 cut-off events. [2024-05-12 13:34:33,653 INFO L125 PetriNetUnfolderBase]: For 200841/200842 co-relation queries the response was YES. [2024-05-12 13:34:33,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73909 conditions, 14569 events. 6550/14569 cut-off events. For 200841/200842 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 153020 event pairs, 3601 based on Foata normal form. 9/13469 useless extension candidates. Maximal degree in co-relation 73759. Up to 9566 conditions per place. [2024-05-12 13:34:33,808 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 516 selfloop transitions, 231 changer transitions 0/755 dead transitions. [2024-05-12 13:34:33,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 755 transitions, 18986 flow [2024-05-12 13:34:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:34:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:34:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-05-12 13:34:33,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061425061425061 [2024-05-12 13:34:33,810 INFO L175 Difference]: Start difference. First operand has 359 places, 700 transitions, 17049 flow. Second operand 11 states and 206 transitions. [2024-05-12 13:34:33,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 755 transitions, 18986 flow [2024-05-12 13:34:35,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 755 transitions, 18401 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-05-12 13:34:35,142 INFO L231 Difference]: Finished difference. Result has 359 places, 700 transitions, 16933 flow [2024-05-12 13:34:35,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16467, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16933, PETRI_PLACES=359, PETRI_TRANSITIONS=700} [2024-05-12 13:34:35,143 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-05-12 13:34:35,143 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 700 transitions, 16933 flow [2024-05-12 13:34:35,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:35,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:35,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:35,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 13:34:35,149 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:35,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash 178723936, now seen corresponding path program 13 times [2024-05-12 13:34:35,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:35,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341988959] [2024-05-12 13:34:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:35,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:36,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:36,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341988959] [2024-05-12 13:34:36,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341988959] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:36,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:36,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:36,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874498276] [2024-05-12 13:34:36,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:36,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:36,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:36,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:36,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:34:36,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 700 transitions, 16933 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:36,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:36,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:34:36,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:40,665 INFO L124 PetriNetUnfolderBase]: 6684/15003 cut-off events. [2024-05-12 13:34:40,666 INFO L125 PetriNetUnfolderBase]: For 205286/205287 co-relation queries the response was YES. [2024-05-12 13:34:40,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74616 conditions, 15003 events. 6684/15003 cut-off events. For 205286/205287 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 159005 event pairs, 3799 based on Foata normal form. 11/13822 useless extension candidates. Maximal degree in co-relation 74466. Up to 11512 conditions per place. [2024-05-12 13:34:40,860 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 522 selfloop transitions, 234 changer transitions 0/764 dead transitions. [2024-05-12 13:34:40,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 764 transitions, 18966 flow [2024-05-12 13:34:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 13:34:40,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 13:34:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 223 transitions. [2024-05-12 13:34:40,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46361746361746364 [2024-05-12 13:34:40,861 INFO L175 Difference]: Start difference. First operand has 359 places, 700 transitions, 16933 flow. Second operand 13 states and 223 transitions. [2024-05-12 13:34:40,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 764 transitions, 18966 flow [2024-05-12 13:34:42,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 764 transitions, 18567 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:34:42,431 INFO L231 Difference]: Finished difference. Result has 370 places, 716 transitions, 17540 flow [2024-05-12 13:34:42,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16558, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17540, PETRI_PLACES=370, PETRI_TRANSITIONS=716} [2024-05-12 13:34:42,431 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 329 predicate places. [2024-05-12 13:34:42,432 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 716 transitions, 17540 flow [2024-05-12 13:34:42,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:42,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:42,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:42,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 13:34:42,432 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:42,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:42,433 INFO L85 PathProgramCache]: Analyzing trace with hash 178719286, now seen corresponding path program 14 times [2024-05-12 13:34:42,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:42,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715557048] [2024-05-12 13:34:42,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:42,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:43,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:43,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715557048] [2024-05-12 13:34:43,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715557048] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:43,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:43,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:43,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091661210] [2024-05-12 13:34:43,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:43,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:43,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:43,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-05-12 13:34:43,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 716 transitions, 17540 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:43,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:43,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-05-12 13:34:43,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand