./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/rfi008.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/rfi008.opt.i ./goblint.2024-05-07_14-17-48.files/protection/rfi008.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 13:30:53,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:30:53,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:30:53,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:30:53,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:30:53,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:30:53,358 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:30:53,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:30:53,359 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:30:53,363 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:30:53,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:30:53,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:30:53,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:30:53,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:30:53,366 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:30:53,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:30:53,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:30:53,366 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:30:53,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:30:53,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:30:53,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:30:53,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:30:53,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:30:53,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:30:53,369 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:30:53,369 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:30:53,369 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:30:53,369 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:30:53,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:30:53,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:30:53,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:30:53,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:30:53,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:30:53,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:30:53,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:30:53,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:30:53,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:30:53,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:30:53,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:30:53,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:30:53,373 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:30:53,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:30:53,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:30:53,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:30:53,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:30:53,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:30:53,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:30:53,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:30:53,641 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:30:53,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-05-12 13:30:54,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:30:55,033 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:30:55,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-05-12 13:30:55,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0efa78cc7/15960379b04c49c18f2d2f2400c611c9/FLAGb1a987591 [2024-05-12 13:30:55,066 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0efa78cc7/15960379b04c49c18f2d2f2400c611c9 [2024-05-12 13:30:55,068 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:30:55,069 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:30:55,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/rfi008.opt.yml/witness.yml [2024-05-12 13:30:55,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:30:55,195 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:30:55,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:30:55,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:30:55,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:30:55,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:30:55" (1/2) ... [2024-05-12 13:30:55,202 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302baeea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:30:55, skipping insertion in model container [2024-05-12 13:30:55,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:30:55" (1/2) ... [2024-05-12 13:30:55,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4bcfa924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:30:55, skipping insertion in model container [2024-05-12 13:30:55,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:30:55" (2/2) ... [2024-05-12 13:30:55,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302baeea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:55, skipping insertion in model container [2024-05-12 13:30:55,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:30:55" (2/2) ... [2024-05-12 13:30:55,204 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:30:55,259 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:30:55,261 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-05-12 13:30:55,261 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-05-12 13:30:55,261 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:30:55,261 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-05-12 13:30:55,297 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:30:55,474 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/rfi008.opt.i[987,1000] [2024-05-12 13:30:55,655 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:30:55,665 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:30:55,726 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/rfi008.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:30:55,793 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:30:55,821 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:30:55,822 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:30:55 WrapperNode [2024-05-12 13:30:55,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:30:55,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:30:55,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:30:55,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:30:55,829 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,840 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,869 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-05-12 13:30:55,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:30:55,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:30:55,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:30:55,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:30:55,879 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,879 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,882 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,897 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 13:30:55,898 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,898 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,905 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,906 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,908 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,909 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:30:55,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:30:55,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:30:55,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:30:55,914 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 01:30:55" (1/1) ... [2024-05-12 13:30:55,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:30:55,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:30:55,948 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 13:30:55,965 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 13:30:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:30:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:30:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:30:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:30:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:30:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:30:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:30:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:30:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:30:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:30:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:30:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:30:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:30:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:30:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:30:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:30:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:30:55,998 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 13:30:56,148 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:30:56,150 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:30:56,431 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:30:56,431 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:30:56,578 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:30:56,578 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:30:56,579 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:30:56 BoogieIcfgContainer [2024-05-12 13:30:56,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:30:56,582 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:30:56,582 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:30:56,584 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:30:56,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:30:55" (1/4) ... [2024-05-12 13:30:56,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fae2662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:30:56, skipping insertion in model container [2024-05-12 13:30:56,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:30:55" (2/4) ... [2024-05-12 13:30:56,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fae2662 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:30:56, skipping insertion in model container [2024-05-12 13:30:56,589 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 01:30:55" (3/4) ... [2024-05-12 13:30:56,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fae2662 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:30:56, skipping insertion in model container [2024-05-12 13:30:56,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:30:56" (4/4) ... [2024-05-12 13:30:56,591 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.opt.i [2024-05-12 13:30:56,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:30:56,605 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 13:30:56,605 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:30:56,642 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:30:56,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-05-12 13:30:56,691 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-05-12 13:30:56,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:30:56,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-05-12 13:30:56,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-05-12 13:30:56,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-05-12 13:30:56,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:30:56,707 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;@784c7f79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:30:56,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 13:30:56,710 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:30:56,710 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-05-12 13:30:56,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:30:56,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:56,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:30:56,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:56,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2105976989, now seen corresponding path program 1 times [2024-05-12 13:30:56,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:56,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778909555] [2024-05-12 13:30:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:56,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:58,059 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 13:30:58,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:58,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778909555] [2024-05-12 13:30:58,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778909555] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:58,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:58,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:30:58,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482935217] [2024-05-12 13:30:58,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:58,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:30:58,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:58,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:30:58,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:30:58,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-05-12 13:30:58,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 13:30:58,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:58,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-05-12 13:30:58,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:58,298 INFO L124 PetriNetUnfolderBase]: 251/519 cut-off events. [2024-05-12 13:30:58,299 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 13:30:58,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 519 events. 251/519 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2728 event pairs, 92 based on Foata normal form. 25/489 useless extension candidates. Maximal degree in co-relation 955. Up to 425 conditions per place. [2024-05-12 13:30:58,303 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 29 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-05-12 13:30:58,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 167 flow [2024-05-12 13:30:58,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:30:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:30:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-05-12 13:30:58,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-05-12 13:30:58,313 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 82 transitions. [2024-05-12 13:30:58,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 167 flow [2024-05-12 13:30:58,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:30:58,317 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-05-12 13:30:58,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-05-12 13:30:58,321 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-05-12 13:30:58,321 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-05-12 13:30:58,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 13:30:58,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:58,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:58,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:30:58,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:58,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:58,322 INFO L85 PathProgramCache]: Analyzing trace with hash 914328572, now seen corresponding path program 1 times [2024-05-12 13:30:58,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:58,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491240202] [2024-05-12 13:30:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:58,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:59,025 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 13:30:59,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:59,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491240202] [2024-05-12 13:30:59,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491240202] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:59,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:59,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:30:59,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495662601] [2024-05-12 13:30:59,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:59,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:30:59,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:59,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:30:59,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:30:59,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-05-12 13:30:59,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 13:30:59,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:59,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-05-12 13:30:59,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:59,203 INFO L124 PetriNetUnfolderBase]: 380/814 cut-off events. [2024-05-12 13:30:59,203 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-05-12 13:30:59,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 814 events. 380/814 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4685 event pairs, 226 based on Foata normal form. 2/742 useless extension candidates. Maximal degree in co-relation 1634. Up to 616 conditions per place. [2024-05-12 13:30:59,208 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 39 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-05-12 13:30:59,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 240 flow [2024-05-12 13:30:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:30:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:30:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-05-12 13:30:59,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-05-12 13:30:59,210 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 4 states and 100 transitions. [2024-05-12 13:30:59,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 240 flow [2024-05-12 13:30:59,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:30:59,212 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 136 flow [2024-05-12 13:30:59,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-05-12 13:30:59,213 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-05-12 13:30:59,213 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 136 flow [2024-05-12 13:30:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 13:30:59,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:59,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:59,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:30:59,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:59,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1720584074, now seen corresponding path program 1 times [2024-05-12 13:30:59,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:59,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336014435] [2024-05-12 13:30:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:59,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:00,015 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 13:31:00,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:00,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336014435] [2024-05-12 13:31:00,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336014435] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:00,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:00,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:31:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008849631] [2024-05-12 13:31:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:00,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:31:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:31:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:31:00,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-05-12 13:31:00,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:00,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:00,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-05-12 13:31:00,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:00,260 INFO L124 PetriNetUnfolderBase]: 370/716 cut-off events. [2024-05-12 13:31:00,261 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2024-05-12 13:31:00,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 716 events. 370/716 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3841 event pairs, 52 based on Foata normal form. 6/676 useless extension candidates. Maximal degree in co-relation 1658. Up to 549 conditions per place. [2024-05-12 13:31:00,264 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 43 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2024-05-12 13:31:00,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 284 flow [2024-05-12 13:31:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:31:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:31:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-05-12 13:31:00,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6263157894736842 [2024-05-12 13:31:00,266 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 136 flow. Second operand 5 states and 119 transitions. [2024-05-12 13:31:00,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 284 flow [2024-05-12 13:31:00,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 270 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:00,268 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 139 flow [2024-05-12 13:31:00,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-05-12 13:31:00,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2024-05-12 13:31:00,269 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 139 flow [2024-05-12 13:31:00,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:00,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:00,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:00,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:31:00,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:00,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:00,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1721401693, now seen corresponding path program 1 times [2024-05-12 13:31:00,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:00,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743744225] [2024-05-12 13:31:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:00,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:00,321 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 13:31:00,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:00,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743744225] [2024-05-12 13:31:00,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743744225] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:00,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:00,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:31:00,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224468687] [2024-05-12 13:31:00,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:00,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:31:00,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:00,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:31:00,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:31:00,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-05-12 13:31:00,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 13:31:00,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:00,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-05-12 13:31:00,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:00,383 INFO L124 PetriNetUnfolderBase]: 170/461 cut-off events. [2024-05-12 13:31:00,383 INFO L125 PetriNetUnfolderBase]: For 162/170 co-relation queries the response was YES. [2024-05-12 13:31:00,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 461 events. 170/461 cut-off events. For 162/170 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2762 event pairs, 76 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 895. Up to 269 conditions per place. [2024-05-12 13:31:00,385 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 23 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-05-12 13:31:00,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 186 flow [2024-05-12 13:31:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:31:00,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:31:00,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-05-12 13:31:00,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-05-12 13:31:00,387 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 139 flow. Second operand 3 states and 80 transitions. [2024-05-12 13:31:00,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 186 flow [2024-05-12 13:31:00,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 172 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:00,388 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 112 flow [2024-05-12 13:31:00,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-05-12 13:31:00,389 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-05-12 13:31:00,389 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 112 flow [2024-05-12 13:31:00,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 13:31:00,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:00,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:00,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:31:00,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:00,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:00,391 INFO L85 PathProgramCache]: Analyzing trace with hash -704644559, now seen corresponding path program 1 times [2024-05-12 13:31:00,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:00,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37592803] [2024-05-12 13:31:00,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:00,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:01,155 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 13:31:01,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37592803] [2024-05-12 13:31:01,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37592803] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:01,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:01,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:31:01,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691085211] [2024-05-12 13:31:01,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:01,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:31:01,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:01,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:31:01,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:31:01,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-05-12 13:31:01,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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 13:31:01,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:01,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-05-12 13:31:01,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:01,431 INFO L124 PetriNetUnfolderBase]: 269/634 cut-off events. [2024-05-12 13:31:01,432 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-05-12 13:31:01,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 634 events. 269/634 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3687 event pairs, 140 based on Foata normal form. 1/601 useless extension candidates. Maximal degree in co-relation 1303. Up to 447 conditions per place. [2024-05-12 13:31:01,461 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 34 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-05-12 13:31:01,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 240 flow [2024-05-12 13:31:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:31:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:31:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-05-12 13:31:01,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736842105263158 [2024-05-12 13:31:01,462 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 112 flow. Second operand 5 states and 109 transitions. [2024-05-12 13:31:01,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 240 flow [2024-05-12 13:31:01,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:01,464 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 155 flow [2024-05-12 13:31:01,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-05-12 13:31:01,465 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-05-12 13:31:01,465 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 155 flow [2024-05-12 13:31:01,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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 13:31:01,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:01,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:01,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:31:01,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:01,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:01,466 INFO L85 PathProgramCache]: Analyzing trace with hash -369143185, now seen corresponding path program 1 times [2024-05-12 13:31:01,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:01,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785768237] [2024-05-12 13:31:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:01,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:02,550 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 13:31:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:02,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785768237] [2024-05-12 13:31:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785768237] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:02,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:02,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:31:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807325058] [2024-05-12 13:31:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:02,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:31:02,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:02,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:31:02,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:31:02,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-05-12 13:31:02,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 13:31:02,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:02,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-05-12 13:31:02,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:02,872 INFO L124 PetriNetUnfolderBase]: 272/641 cut-off events. [2024-05-12 13:31:02,872 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2024-05-12 13:31:02,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 641 events. 272/641 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3715 event pairs, 138 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 1442. Up to 439 conditions per place. [2024-05-12 13:31:02,876 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 40 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2024-05-12 13:31:02,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 303 flow [2024-05-12 13:31:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:31:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:31:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-05-12 13:31:02,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2024-05-12 13:31:02,878 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 155 flow. Second operand 6 states and 131 transitions. [2024-05-12 13:31:02,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 303 flow [2024-05-12 13:31:02,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 294 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:02,880 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 181 flow [2024-05-12 13:31:02,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-05-12 13:31:02,881 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-05-12 13:31:02,881 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 181 flow [2024-05-12 13:31:02,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 13:31:02,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:02,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:02,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:31:02,881 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:02,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:02,882 INFO L85 PathProgramCache]: Analyzing trace with hash 381944988, now seen corresponding path program 1 times [2024-05-12 13:31:02,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:02,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952635521] [2024-05-12 13:31:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:02,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:03,474 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 13:31:03,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:03,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952635521] [2024-05-12 13:31:03,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952635521] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:03,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:03,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:31:03,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563700402] [2024-05-12 13:31:03,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:03,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:31:03,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:03,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:31:03,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:31:03,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:03,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 181 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 13:31:03,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:03,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:03,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:03,842 INFO L124 PetriNetUnfolderBase]: 388/815 cut-off events. [2024-05-12 13:31:03,842 INFO L125 PetriNetUnfolderBase]: For 724/724 co-relation queries the response was YES. [2024-05-12 13:31:03,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 815 events. 388/815 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4511 event pairs, 176 based on Foata normal form. 1/780 useless extension candidates. Maximal degree in co-relation 2017. Up to 622 conditions per place. [2024-05-12 13:31:03,847 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 45 selfloop transitions, 10 changer transitions 2/67 dead transitions. [2024-05-12 13:31:03,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 359 flow [2024-05-12 13:31:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:31:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:31:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-05-12 13:31:03,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2024-05-12 13:31:03,849 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 181 flow. Second operand 6 states and 122 transitions. [2024-05-12 13:31:03,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 359 flow [2024-05-12 13:31:03,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 340 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:03,854 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 221 flow [2024-05-12 13:31:03,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-05-12 13:31:03,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-05-12 13:31:03,855 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 221 flow [2024-05-12 13:31:03,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 13:31:03,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:03,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:03,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:31:03,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:03,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:03,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1441454928, now seen corresponding path program 2 times [2024-05-12 13:31:03,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:03,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516665270] [2024-05-12 13:31:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:03,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:04,436 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 13:31:04,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:04,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516665270] [2024-05-12 13:31:04,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516665270] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:04,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:04,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:31:04,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685753267] [2024-05-12 13:31:04,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:04,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:31:04,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:31:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:31:04,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:04,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 221 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 13:31:04,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:04,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:04,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:04,705 INFO L124 PetriNetUnfolderBase]: 332/722 cut-off events. [2024-05-12 13:31:04,705 INFO L125 PetriNetUnfolderBase]: For 926/930 co-relation queries the response was YES. [2024-05-12 13:31:04,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1921 conditions, 722 events. 332/722 cut-off events. For 926/930 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3997 event pairs, 136 based on Foata normal form. 5/692 useless extension candidates. Maximal degree in co-relation 1896. Up to 514 conditions per place. [2024-05-12 13:31:04,709 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 43 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2024-05-12 13:31:04,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 387 flow [2024-05-12 13:31:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:31:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:31:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-05-12 13:31:04,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:31:04,710 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 221 flow. Second operand 6 states and 120 transitions. [2024-05-12 13:31:04,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 387 flow [2024-05-12 13:31:04,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 368 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:04,713 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 249 flow [2024-05-12 13:31:04,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=249, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-05-12 13:31:04,713 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-05-12 13:31:04,714 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 249 flow [2024-05-12 13:31:04,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 13:31:04,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:04,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:04,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:31:04,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:04,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1586418216, now seen corresponding path program 1 times [2024-05-12 13:31:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912321001] [2024-05-12 13:31:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:04,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:05,318 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 13:31:05,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:05,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912321001] [2024-05-12 13:31:05,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912321001] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:05,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:05,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:05,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545227443] [2024-05-12 13:31:05,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:05,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:05,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:05,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:05,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:05,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:05,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 249 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:05,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:05,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:05,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:05,687 INFO L124 PetriNetUnfolderBase]: 386/841 cut-off events. [2024-05-12 13:31:05,688 INFO L125 PetriNetUnfolderBase]: For 1410/1410 co-relation queries the response was YES. [2024-05-12 13:31:05,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 841 events. 386/841 cut-off events. For 1410/1410 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4783 event pairs, 107 based on Foata normal form. 3/804 useless extension candidates. Maximal degree in co-relation 2321. Up to 569 conditions per place. [2024-05-12 13:31:05,692 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 22 changer transitions 0/90 dead transitions. [2024-05-12 13:31:05,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 545 flow [2024-05-12 13:31:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-05-12 13:31:05,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296052631578947 [2024-05-12 13:31:05,693 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 249 flow. Second operand 8 states and 161 transitions. [2024-05-12 13:31:05,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 545 flow [2024-05-12 13:31:05,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 90 transitions, 508 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:05,696 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 376 flow [2024-05-12 13:31:05,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=376, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2024-05-12 13:31:05,697 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-05-12 13:31:05,697 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 376 flow [2024-05-12 13:31:05,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:05,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:05,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:05,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:31:05,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:05,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:05,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1044756504, now seen corresponding path program 2 times [2024-05-12 13:31:05,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768113505] [2024-05-12 13:31:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:05,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:06,387 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 13:31:06,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:06,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768113505] [2024-05-12 13:31:06,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768113505] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:06,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:06,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:06,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762629640] [2024-05-12 13:31:06,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:06,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:06,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:06,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:06,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:06,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:06,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 376 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:06,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:06,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:06,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:06,817 INFO L124 PetriNetUnfolderBase]: 413/902 cut-off events. [2024-05-12 13:31:06,818 INFO L125 PetriNetUnfolderBase]: For 2004/2004 co-relation queries the response was YES. [2024-05-12 13:31:06,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2784 conditions, 902 events. 413/902 cut-off events. For 2004/2004 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5231 event pairs, 109 based on Foata normal form. 3/862 useless extension candidates. Maximal degree in co-relation 2755. Up to 579 conditions per place. [2024-05-12 13:31:06,823 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 61 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2024-05-12 13:31:06,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 634 flow [2024-05-12 13:31:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-05-12 13:31:06,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338345864661654 [2024-05-12 13:31:06,824 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 376 flow. Second operand 7 states and 142 transitions. [2024-05-12 13:31:06,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 634 flow [2024-05-12 13:31:06,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 610 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:06,829 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 415 flow [2024-05-12 13:31:06,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=415, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-05-12 13:31:06,830 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2024-05-12 13:31:06,830 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 415 flow [2024-05-12 13:31:06,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:06,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:06,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:06,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:31:06,831 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:06,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:06,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1044605844, now seen corresponding path program 3 times [2024-05-12 13:31:06,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:06,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552332893] [2024-05-12 13:31:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:07,609 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 13:31:07,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:07,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552332893] [2024-05-12 13:31:07,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552332893] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:07,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:07,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:07,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532704024] [2024-05-12 13:31:07,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:07,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:07,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:07,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:07,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:07,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:07,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 415 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:07,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:07,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:07,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:08,004 INFO L124 PetriNetUnfolderBase]: 440/966 cut-off events. [2024-05-12 13:31:08,004 INFO L125 PetriNetUnfolderBase]: For 2607/2607 co-relation queries the response was YES. [2024-05-12 13:31:08,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 966 events. 440/966 cut-off events. For 2607/2607 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5739 event pairs, 112 based on Foata normal form. 3/922 useless extension candidates. Maximal degree in co-relation 3092. Up to 578 conditions per place. [2024-05-12 13:31:08,010 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 61 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-05-12 13:31:08,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 94 transitions, 675 flow [2024-05-12 13:31:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-05-12 13:31:08,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375939849624061 [2024-05-12 13:31:08,012 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 415 flow. Second operand 7 states and 143 transitions. [2024-05-12 13:31:08,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 94 transitions, 675 flow [2024-05-12 13:31:08,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 94 transitions, 631 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:08,018 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 435 flow [2024-05-12 13:31:08,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=435, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-05-12 13:31:08,019 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-05-12 13:31:08,019 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 435 flow [2024-05-12 13:31:08,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:08,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:08,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:08,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:31:08,019 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:08,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:08,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1727157262, now seen corresponding path program 1 times [2024-05-12 13:31:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:08,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202948161] [2024-05-12 13:31:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:08,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:08,929 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 13:31:08,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:08,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202948161] [2024-05-12 13:31:08,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202948161] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:08,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:08,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:08,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098738224] [2024-05-12 13:31:08,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:08,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:08,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:08,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:08,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:09,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:09,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 435 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:09,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:09,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:09,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:09,377 INFO L124 PetriNetUnfolderBase]: 451/976 cut-off events. [2024-05-12 13:31:09,377 INFO L125 PetriNetUnfolderBase]: For 2467/2467 co-relation queries the response was YES. [2024-05-12 13:31:09,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3159 conditions, 976 events. 451/976 cut-off events. For 2467/2467 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5744 event pairs, 111 based on Foata normal form. 1/931 useless extension candidates. Maximal degree in co-relation 3127. Up to 709 conditions per place. [2024-05-12 13:31:09,384 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 69 selfloop transitions, 15 changer transitions 0/94 dead transitions. [2024-05-12 13:31:09,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 94 transitions, 693 flow [2024-05-12 13:31:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-05-12 13:31:09,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225563909774437 [2024-05-12 13:31:09,385 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 435 flow. Second operand 7 states and 139 transitions. [2024-05-12 13:31:09,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 94 transitions, 693 flow [2024-05-12 13:31:09,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 641 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:09,392 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 432 flow [2024-05-12 13:31:09,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-05-12 13:31:09,392 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-05-12 13:31:09,393 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 432 flow [2024-05-12 13:31:09,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:09,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:09,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:09,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:31:09,393 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:09,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:09,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1735431224, now seen corresponding path program 4 times [2024-05-12 13:31:09,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:09,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617668077] [2024-05-12 13:31:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:09,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:10,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:10,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617668077] [2024-05-12 13:31:10,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617668077] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:10,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:10,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:10,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120175737] [2024-05-12 13:31:10,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:10,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:10,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:10,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:10,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:10,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:10,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:10,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:10,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:10,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:10,512 INFO L124 PetriNetUnfolderBase]: 468/1011 cut-off events. [2024-05-12 13:31:10,512 INFO L125 PetriNetUnfolderBase]: For 2739/2741 co-relation queries the response was YES. [2024-05-12 13:31:10,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3260 conditions, 1011 events. 468/1011 cut-off events. For 2739/2741 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6001 event pairs, 111 based on Foata normal form. 5/969 useless extension candidates. Maximal degree in co-relation 3227. Up to 572 conditions per place. [2024-05-12 13:31:10,519 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 61 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2024-05-12 13:31:10,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 97 transitions, 702 flow [2024-05-12 13:31:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-05-12 13:31:10,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375939849624061 [2024-05-12 13:31:10,520 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 432 flow. Second operand 7 states and 143 transitions. [2024-05-12 13:31:10,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 97 transitions, 702 flow [2024-05-12 13:31:10,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 97 transitions, 669 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:10,532 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 469 flow [2024-05-12 13:31:10,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-05-12 13:31:10,533 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-05-12 13:31:10,533 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 469 flow [2024-05-12 13:31:10,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:10,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:10,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:10,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:31:10,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:10,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1039012576, now seen corresponding path program 2 times [2024-05-12 13:31:10,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:10,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057898691] [2024-05-12 13:31:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:10,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:11,583 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 13:31:11,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:11,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057898691] [2024-05-12 13:31:11,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057898691] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:11,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:11,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199579361] [2024-05-12 13:31:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:11,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:11,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:11,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 469 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:11,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:11,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:11,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:11,934 INFO L124 PetriNetUnfolderBase]: 479/1036 cut-off events. [2024-05-12 13:31:11,934 INFO L125 PetriNetUnfolderBase]: For 3124/3128 co-relation queries the response was YES. [2024-05-12 13:31:11,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3474 conditions, 1036 events. 479/1036 cut-off events. For 3124/3128 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6210 event pairs, 107 based on Foata normal form. 5/992 useless extension candidates. Maximal degree in co-relation 3440. Up to 736 conditions per place. [2024-05-12 13:31:11,940 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 69 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-05-12 13:31:11,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 97 transitions, 741 flow [2024-05-12 13:31:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-05-12 13:31:11,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225563909774437 [2024-05-12 13:31:11,942 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 469 flow. Second operand 7 states and 139 transitions. [2024-05-12 13:31:11,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 97 transitions, 741 flow [2024-05-12 13:31:11,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 681 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:11,947 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 468 flow [2024-05-12 13:31:11,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-05-12 13:31:11,947 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2024-05-12 13:31:11,948 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 468 flow [2024-05-12 13:31:11,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:11,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:11,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:11,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:31:11,948 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:11,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:11,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1039004206, now seen corresponding path program 3 times [2024-05-12 13:31:11,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:11,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088320525] [2024-05-12 13:31:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:12,810 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 13:31:12,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:12,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088320525] [2024-05-12 13:31:12,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088320525] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:12,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:12,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:31:12,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305451961] [2024-05-12 13:31:12,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:12,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:31:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:12,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:31:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:31:12,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:12,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 468 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:12,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:12,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:12,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:13,208 INFO L124 PetriNetUnfolderBase]: 480/1045 cut-off events. [2024-05-12 13:31:13,208 INFO L125 PetriNetUnfolderBase]: For 3036/3040 co-relation queries the response was YES. [2024-05-12 13:31:13,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3421 conditions, 1045 events. 480/1045 cut-off events. For 3036/3040 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6319 event pairs, 107 based on Foata normal form. 5/1000 useless extension candidates. Maximal degree in co-relation 3386. Up to 705 conditions per place. [2024-05-12 13:31:13,215 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 68 selfloop transitions, 23 changer transitions 0/101 dead transitions. [2024-05-12 13:31:13,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 762 flow [2024-05-12 13:31:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:31:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:31:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-05-12 13:31:13,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:31:13,217 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 468 flow. Second operand 7 states and 140 transitions. [2024-05-12 13:31:13,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 762 flow [2024-05-12 13:31:13,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 101 transitions, 719 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:13,222 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 519 flow [2024-05-12 13:31:13,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=519, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2024-05-12 13:31:13,223 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-05-12 13:31:13,223 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 519 flow [2024-05-12 13:31:13,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 13:31:13,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:13,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:13,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:31:13,224 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:13,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1735739054, now seen corresponding path program 1 times [2024-05-12 13:31:13,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:13,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291014231] [2024-05-12 13:31:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:13,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:14,447 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 13:31:14,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:14,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291014231] [2024-05-12 13:31:14,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291014231] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:14,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:14,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:14,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166837573] [2024-05-12 13:31:14,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:14,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:14,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:14,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:14,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-05-12 13:31:14,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 519 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 13:31:14,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:14,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-05-12 13:31:14,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:14,910 INFO L124 PetriNetUnfolderBase]: 444/997 cut-off events. [2024-05-12 13:31:14,910 INFO L125 PetriNetUnfolderBase]: For 3092/3105 co-relation queries the response was YES. [2024-05-12 13:31:14,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3254 conditions, 997 events. 444/997 cut-off events. For 3092/3105 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6138 event pairs, 115 based on Foata normal form. 15/964 useless extension candidates. Maximal degree in co-relation 3217. Up to 662 conditions per place. [2024-05-12 13:31:14,916 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 75 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2024-05-12 13:31:14,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 106 transitions, 793 flow [2024-05-12 13:31:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-05-12 13:31:14,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361842105263158 [2024-05-12 13:31:14,934 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 519 flow. Second operand 8 states and 163 transitions. [2024-05-12 13:31:14,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 106 transitions, 793 flow [2024-05-12 13:31:14,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 106 transitions, 760 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:14,943 INFO L231 Difference]: Finished difference. Result has 87 places, 79 transitions, 524 flow [2024-05-12 13:31:14,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=524, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2024-05-12 13:31:14,944 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-05-12 13:31:14,946 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 524 flow [2024-05-12 13:31:14,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 13:31:14,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:14,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:14,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:31:14,947 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:14,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1972167291, now seen corresponding path program 1 times [2024-05-12 13:31:14,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:14,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107259100] [2024-05-12 13:31:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:14,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:15,923 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 13:31:15,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:15,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107259100] [2024-05-12 13:31:15,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107259100] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:15,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:15,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:15,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537458756] [2024-05-12 13:31:15,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:15,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:15,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:15,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:16,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:16,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 524 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:16,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:16,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:16,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:16,447 INFO L124 PetriNetUnfolderBase]: 482/1065 cut-off events. [2024-05-12 13:31:16,450 INFO L125 PetriNetUnfolderBase]: For 3441/3441 co-relation queries the response was YES. [2024-05-12 13:31:16,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3589 conditions, 1065 events. 482/1065 cut-off events. For 3441/3441 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6531 event pairs, 83 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 3550. Up to 702 conditions per place. [2024-05-12 13:31:16,465 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 77 selfloop transitions, 23 changer transitions 0/110 dead transitions. [2024-05-12 13:31:16,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 110 transitions, 840 flow [2024-05-12 13:31:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-05-12 13:31:16,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2024-05-12 13:31:16,466 INFO L175 Difference]: Start difference. First operand has 87 places, 79 transitions, 524 flow. Second operand 8 states and 159 transitions. [2024-05-12 13:31:16,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 110 transitions, 840 flow [2024-05-12 13:31:16,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 790 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:16,481 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 563 flow [2024-05-12 13:31:16,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-05-12 13:31:16,481 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-05-12 13:31:16,481 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 563 flow [2024-05-12 13:31:16,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:16,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:16,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:16,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:31:16,482 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:16,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:16,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2002059736, now seen corresponding path program 1 times [2024-05-12 13:31:16,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:16,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083093184] [2024-05-12 13:31:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:16,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:17,417 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 13:31:17,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:17,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083093184] [2024-05-12 13:31:17,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083093184] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:17,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:17,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:17,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253092360] [2024-05-12 13:31:17,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:17,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:17,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:17,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:17,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:17,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:17,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 563 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:17,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:17,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:17,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:17,861 INFO L124 PetriNetUnfolderBase]: 509/1106 cut-off events. [2024-05-12 13:31:17,861 INFO L125 PetriNetUnfolderBase]: For 3995/3995 co-relation queries the response was YES. [2024-05-12 13:31:17,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3772 conditions, 1106 events. 509/1106 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6824 event pairs, 121 based on Foata normal form. 3/1057 useless extension candidates. Maximal degree in co-relation 3732. Up to 684 conditions per place. [2024-05-12 13:31:17,873 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 81 selfloop transitions, 24 changer transitions 0/115 dead transitions. [2024-05-12 13:31:17,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 115 transitions, 891 flow [2024-05-12 13:31:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-05-12 13:31:17,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328947368421053 [2024-05-12 13:31:17,875 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 563 flow. Second operand 8 states and 162 transitions. [2024-05-12 13:31:17,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 115 transitions, 891 flow [2024-05-12 13:31:17,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 832 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:17,886 INFO L231 Difference]: Finished difference. Result has 92 places, 84 transitions, 574 flow [2024-05-12 13:31:17,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=574, PETRI_PLACES=92, PETRI_TRANSITIONS=84} [2024-05-12 13:31:17,887 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-05-12 13:31:17,887 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 84 transitions, 574 flow [2024-05-12 13:31:17,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:17,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:17,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:17,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:31:17,888 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:17,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:17,888 INFO L85 PathProgramCache]: Analyzing trace with hash 145031354, now seen corresponding path program 2 times [2024-05-12 13:31:17,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:17,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267945730] [2024-05-12 13:31:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:17,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267945730] [2024-05-12 13:31:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267945730] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795875986] [2024-05-12 13:31:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:18,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:18,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:18,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:18,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:18,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:18,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 84 transitions, 574 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:18,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:18,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:18,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:19,204 INFO L124 PetriNetUnfolderBase]: 552/1172 cut-off events. [2024-05-12 13:31:19,204 INFO L125 PetriNetUnfolderBase]: For 4752/4752 co-relation queries the response was YES. [2024-05-12 13:31:19,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 1172 events. 552/1172 cut-off events. For 4752/4752 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7255 event pairs, 120 based on Foata normal form. 1/1121 useless extension candidates. Maximal degree in co-relation 4161. Up to 643 conditions per place. [2024-05-12 13:31:19,210 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 78 selfloop transitions, 30 changer transitions 0/118 dead transitions. [2024-05-12 13:31:19,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 118 transitions, 958 flow [2024-05-12 13:31:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-05-12 13:31:19,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-05-12 13:31:19,212 INFO L175 Difference]: Start difference. First operand has 92 places, 84 transitions, 574 flow. Second operand 8 states and 164 transitions. [2024-05-12 13:31:19,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 118 transitions, 958 flow [2024-05-12 13:31:19,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 118 transitions, 908 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:19,221 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 637 flow [2024-05-12 13:31:19,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2024-05-12 13:31:19,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2024-05-12 13:31:19,222 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 637 flow [2024-05-12 13:31:19,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:19,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:19,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:19,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:31:19,222 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:19,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2093041287, now seen corresponding path program 1 times [2024-05-12 13:31:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:19,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471856636] [2024-05-12 13:31:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:20,099 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 13:31:20,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:20,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471856636] [2024-05-12 13:31:20,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471856636] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:20,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:20,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:20,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772548035] [2024-05-12 13:31:20,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:20,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:20,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:20,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:20,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:20,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:20,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 637 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:20,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:20,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:20,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:20,543 INFO L124 PetriNetUnfolderBase]: 579/1241 cut-off events. [2024-05-12 13:31:20,544 INFO L125 PetriNetUnfolderBase]: For 6361/6361 co-relation queries the response was YES. [2024-05-12 13:31:20,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4712 conditions, 1241 events. 579/1241 cut-off events. For 6361/6361 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7780 event pairs, 141 based on Foata normal form. 3/1181 useless extension candidates. Maximal degree in co-relation 4669. Up to 891 conditions per place. [2024-05-12 13:31:20,550 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 93 selfloop transitions, 16 changer transitions 0/119 dead transitions. [2024-05-12 13:31:20,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 119 transitions, 979 flow [2024-05-12 13:31:20,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:20,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-05-12 13:31:20,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2024-05-12 13:31:20,552 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 637 flow. Second operand 8 states and 159 transitions. [2024-05-12 13:31:20,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 119 transitions, 979 flow [2024-05-12 13:31:20,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 940 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:20,562 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 650 flow [2024-05-12 13:31:20,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=650, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2024-05-12 13:31:20,562 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-05-12 13:31:20,562 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 650 flow [2024-05-12 13:31:20,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:20,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:20,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:20,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:31:20,563 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:20,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1976958868, now seen corresponding path program 3 times [2024-05-12 13:31:20,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:20,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794478290] [2024-05-12 13:31:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:20,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:21,640 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 13:31:21,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:21,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794478290] [2024-05-12 13:31:21,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794478290] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:21,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:21,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:21,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884001081] [2024-05-12 13:31:21,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:21,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:21,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:21,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:21,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:21,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:21,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 650 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:21,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:21,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:21,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:22,191 INFO L124 PetriNetUnfolderBase]: 574/1234 cut-off events. [2024-05-12 13:31:22,192 INFO L125 PetriNetUnfolderBase]: For 6212/6212 co-relation queries the response was YES. [2024-05-12 13:31:22,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 1234 events. 574/1234 cut-off events. For 6212/6212 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7779 event pairs, 127 based on Foata normal form. 3/1181 useless extension candidates. Maximal degree in co-relation 4658. Up to 763 conditions per place. [2024-05-12 13:31:22,200 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 85 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-05-12 13:31:22,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 120 transitions, 988 flow [2024-05-12 13:31:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:22,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-05-12 13:31:22,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361842105263158 [2024-05-12 13:31:22,201 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 650 flow. Second operand 8 states and 163 transitions. [2024-05-12 13:31:22,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 120 transitions, 988 flow [2024-05-12 13:31:22,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 120 transitions, 944 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:22,216 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 661 flow [2024-05-12 13:31:22,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=661, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-05-12 13:31:22,217 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-05-12 13:31:22,217 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 661 flow [2024-05-12 13:31:22,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:22,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:22,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:22,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:31:22,218 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:22,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash -178112284, now seen corresponding path program 4 times [2024-05-12 13:31:22,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:22,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098571018] [2024-05-12 13:31:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:22,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:23,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:23,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098571018] [2024-05-12 13:31:23,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098571018] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:23,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:23,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875345499] [2024-05-12 13:31:23,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:23,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:23,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:23,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:23,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:23,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:23,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 661 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:23,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:23,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:23,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:23,765 INFO L124 PetriNetUnfolderBase]: 617/1287 cut-off events. [2024-05-12 13:31:23,766 INFO L125 PetriNetUnfolderBase]: For 7001/7005 co-relation queries the response was YES. [2024-05-12 13:31:23,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5078 conditions, 1287 events. 617/1287 cut-off events. For 7001/7005 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8035 event pairs, 116 based on Foata normal form. 5/1238 useless extension candidates. Maximal degree in co-relation 5032. Up to 754 conditions per place. [2024-05-12 13:31:23,774 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 84 selfloop transitions, 31 changer transitions 0/125 dead transitions. [2024-05-12 13:31:23,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 125 transitions, 1099 flow [2024-05-12 13:31:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:23,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-05-12 13:31:23,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460526315789473 [2024-05-12 13:31:23,775 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 661 flow. Second operand 8 states and 166 transitions. [2024-05-12 13:31:23,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 125 transitions, 1099 flow [2024-05-12 13:31:23,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 125 transitions, 1034 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:23,788 INFO L231 Difference]: Finished difference. Result has 103 places, 93 transitions, 719 flow [2024-05-12 13:31:23,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=719, PETRI_PLACES=103, PETRI_TRANSITIONS=93} [2024-05-12 13:31:23,789 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2024-05-12 13:31:23,789 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 93 transitions, 719 flow [2024-05-12 13:31:23,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:23,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:23,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:23,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:31:23,789 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:23,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2036197521, now seen corresponding path program 2 times [2024-05-12 13:31:23,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:23,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195958132] [2024-05-12 13:31:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:23,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:24,786 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 13:31:24,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:24,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195958132] [2024-05-12 13:31:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195958132] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:24,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630868672] [2024-05-12 13:31:24,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:24,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:24,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:24,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:24,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 93 transitions, 719 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:24,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:24,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:24,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:25,136 INFO L124 PetriNetUnfolderBase]: 644/1360 cut-off events. [2024-05-12 13:31:25,136 INFO L125 PetriNetUnfolderBase]: For 8748/8752 co-relation queries the response was YES. [2024-05-12 13:31:25,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5489 conditions, 1360 events. 644/1360 cut-off events. For 8748/8752 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8693 event pairs, 139 based on Foata normal form. 7/1293 useless extension candidates. Maximal degree in co-relation 5441. Up to 978 conditions per place. [2024-05-12 13:31:25,145 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 95 selfloop transitions, 19 changer transitions 0/124 dead transitions. [2024-05-12 13:31:25,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 124 transitions, 1079 flow [2024-05-12 13:31:25,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-05-12 13:31:25,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2024-05-12 13:31:25,147 INFO L175 Difference]: Start difference. First operand has 103 places, 93 transitions, 719 flow. Second operand 8 states and 159 transitions. [2024-05-12 13:31:25,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 124 transitions, 1079 flow [2024-05-12 13:31:25,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 124 transitions, 1026 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:25,161 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 726 flow [2024-05-12 13:31:25,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=726, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2024-05-12 13:31:25,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2024-05-12 13:31:25,162 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 726 flow [2024-05-12 13:31:25,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:25,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:25,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:25,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:31:25,163 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:25,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:25,163 INFO L85 PathProgramCache]: Analyzing trace with hash -168588805, now seen corresponding path program 3 times [2024-05-12 13:31:25,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:25,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229616434] [2024-05-12 13:31:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:25,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:26,108 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 13:31:26,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:26,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229616434] [2024-05-12 13:31:26,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229616434] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:26,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:26,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:26,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810126566] [2024-05-12 13:31:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:26,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:26,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:26,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 726 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:26,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:26,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:26,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:26,629 INFO L124 PetriNetUnfolderBase]: 671/1424 cut-off events. [2024-05-12 13:31:26,629 INFO L125 PetriNetUnfolderBase]: For 9596/9596 co-relation queries the response was YES. [2024-05-12 13:31:26,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 1424 events. 671/1424 cut-off events. For 9596/9596 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9191 event pairs, 159 based on Foata normal form. 3/1351 useless extension candidates. Maximal degree in co-relation 5763. Up to 1019 conditions per place. [2024-05-12 13:31:26,647 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 102 selfloop transitions, 12 changer transitions 0/124 dead transitions. [2024-05-12 13:31:26,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 124 transitions, 1078 flow [2024-05-12 13:31:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-05-12 13:31:26,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-05-12 13:31:26,648 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 726 flow. Second operand 8 states and 158 transitions. [2024-05-12 13:31:26,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 124 transitions, 1078 flow [2024-05-12 13:31:26,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 124 transitions, 1028 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:26,664 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 725 flow [2024-05-12 13:31:26,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=725, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2024-05-12 13:31:26,664 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2024-05-12 13:31:26,664 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 725 flow [2024-05-12 13:31:26,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:26,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:26,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:26,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:31:26,665 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:26,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2036205240, now seen corresponding path program 5 times [2024-05-12 13:31:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:26,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445505836] [2024-05-12 13:31:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:27,582 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 13:31:27,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:27,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445505836] [2024-05-12 13:31:27,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445505836] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:27,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:27,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:27,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051126897] [2024-05-12 13:31:27,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:27,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:27,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:27,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:27,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 725 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:27,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:27,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:27,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:27,979 INFO L124 PetriNetUnfolderBase]: 666/1403 cut-off events. [2024-05-12 13:31:27,979 INFO L125 PetriNetUnfolderBase]: For 9086/9090 co-relation queries the response was YES. [2024-05-12 13:31:27,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5616 conditions, 1403 events. 666/1403 cut-off events. For 9086/9090 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8981 event pairs, 123 based on Foata normal form. 7/1348 useless extension candidates. Maximal degree in co-relation 5565. Up to 862 conditions per place. [2024-05-12 13:31:27,988 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 88 selfloop transitions, 28 changer transitions 0/126 dead transitions. [2024-05-12 13:31:27,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 126 transitions, 1089 flow [2024-05-12 13:31:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-05-12 13:31:27,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361842105263158 [2024-05-12 13:31:27,990 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 725 flow. Second operand 8 states and 163 transitions. [2024-05-12 13:31:27,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 126 transitions, 1089 flow [2024-05-12 13:31:28,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 126 transitions, 1044 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:28,007 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 741 flow [2024-05-12 13:31:28,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=111, PETRI_TRANSITIONS=95} [2024-05-12 13:31:28,008 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2024-05-12 13:31:28,008 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 741 flow [2024-05-12 13:31:28,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:28,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:28,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:28,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:31:28,009 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:28,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:28,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2027000751, now seen corresponding path program 4 times [2024-05-12 13:31:28,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:28,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204114695] [2024-05-12 13:31:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:28,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:29,011 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 13:31:29,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:29,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204114695] [2024-05-12 13:31:29,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204114695] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:29,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898357419] [2024-05-12 13:31:29,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:29,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:29,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:29,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:29,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 95 transitions, 741 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:29,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:29,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:29,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:29,405 INFO L124 PetriNetUnfolderBase]: 667/1417 cut-off events. [2024-05-12 13:31:29,405 INFO L125 PetriNetUnfolderBase]: For 8308/8312 co-relation queries the response was YES. [2024-05-12 13:31:29,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5586 conditions, 1417 events. 667/1417 cut-off events. For 8308/8312 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9138 event pairs, 145 based on Foata normal form. 5/1343 useless extension candidates. Maximal degree in co-relation 5534. Up to 962 conditions per place. [2024-05-12 13:31:29,412 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 91 selfloop transitions, 29 changer transitions 0/130 dead transitions. [2024-05-12 13:31:29,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 130 transitions, 1135 flow [2024-05-12 13:31:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:29,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-05-12 13:31:29,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296052631578947 [2024-05-12 13:31:29,414 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 741 flow. Second operand 8 states and 161 transitions. [2024-05-12 13:31:29,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 130 transitions, 1135 flow [2024-05-12 13:31:29,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 130 transitions, 1072 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:29,429 INFO L231 Difference]: Finished difference. Result has 114 places, 102 transitions, 812 flow [2024-05-12 13:31:29,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=114, PETRI_TRANSITIONS=102} [2024-05-12 13:31:29,429 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-05-12 13:31:29,430 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 812 flow [2024-05-12 13:31:29,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:29,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:29,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:29,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:31:29,430 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:29,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:29,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2027001030, now seen corresponding path program 6 times [2024-05-12 13:31:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:29,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122027648] [2024-05-12 13:31:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:30,305 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 13:31:30,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:30,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122027648] [2024-05-12 13:31:30,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122027648] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:30,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:30,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:31:30,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874438242] [2024-05-12 13:31:30,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:30,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:31:30,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:31:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:31:30,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:30,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 812 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:30,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:30,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:30,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:30,758 INFO L124 PetriNetUnfolderBase]: 668/1423 cut-off events. [2024-05-12 13:31:30,759 INFO L125 PetriNetUnfolderBase]: For 8535/8539 co-relation queries the response was YES. [2024-05-12 13:31:30,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5702 conditions, 1423 events. 668/1423 cut-off events. For 8535/8539 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9233 event pairs, 126 based on Foata normal form. 5/1360 useless extension candidates. Maximal degree in co-relation 5647. Up to 693 conditions per place. [2024-05-12 13:31:30,766 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 81 selfloop transitions, 42 changer transitions 0/133 dead transitions. [2024-05-12 13:31:30,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 133 transitions, 1202 flow [2024-05-12 13:31:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:31:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:31:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-05-12 13:31:30,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-05-12 13:31:30,771 INFO L175 Difference]: Start difference. First operand has 114 places, 102 transitions, 812 flow. Second operand 8 states and 164 transitions. [2024-05-12 13:31:30,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 133 transitions, 1202 flow [2024-05-12 13:31:30,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 133 transitions, 1161 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:30,798 INFO L231 Difference]: Finished difference. Result has 119 places, 104 transitions, 892 flow [2024-05-12 13:31:30,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=892, PETRI_PLACES=119, PETRI_TRANSITIONS=104} [2024-05-12 13:31:30,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2024-05-12 13:31:30,799 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 104 transitions, 892 flow [2024-05-12 13:31:30,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:30,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:30,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:30,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:31:30,799 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:30,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1305494553, now seen corresponding path program 1 times [2024-05-12 13:31:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:30,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202486122] [2024-05-12 13:31:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:30,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:31,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:31,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202486122] [2024-05-12 13:31:31,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202486122] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:31,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:31,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:31,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920204600] [2024-05-12 13:31:31,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:31,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:31,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:31,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:31,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:32,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:32,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 104 transitions, 892 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:32,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:32,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:32,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:32,589 INFO L124 PetriNetUnfolderBase]: 684/1469 cut-off events. [2024-05-12 13:31:32,589 INFO L125 PetriNetUnfolderBase]: For 10012/10012 co-relation queries the response was YES. [2024-05-12 13:31:32,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6165 conditions, 1469 events. 684/1469 cut-off events. For 10012/10012 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9819 event pairs, 136 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 6108. Up to 1010 conditions per place. [2024-05-12 13:31:32,598 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 105 selfloop transitions, 24 changer transitions 0/139 dead transitions. [2024-05-12 13:31:32,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 139 transitions, 1278 flow [2024-05-12 13:31:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-05-12 13:31:32,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2024-05-12 13:31:32,600 INFO L175 Difference]: Start difference. First operand has 119 places, 104 transitions, 892 flow. Second operand 9 states and 178 transitions. [2024-05-12 13:31:32,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 139 transitions, 1278 flow [2024-05-12 13:31:32,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 139 transitions, 1175 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:32,621 INFO L231 Difference]: Finished difference. Result has 122 places, 105 transitions, 859 flow [2024-05-12 13:31:32,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=859, PETRI_PLACES=122, PETRI_TRANSITIONS=105} [2024-05-12 13:31:32,621 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-05-12 13:31:32,621 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 105 transitions, 859 flow [2024-05-12 13:31:32,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:32,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:32,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:32,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:31:32,622 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:32,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:32,622 INFO L85 PathProgramCache]: Analyzing trace with hash -604792311, now seen corresponding path program 1 times [2024-05-12 13:31:32,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:32,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55090690] [2024-05-12 13:31:32,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:32,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:33,325 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 13:31:33,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:33,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55090690] [2024-05-12 13:31:33,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55090690] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:33,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:33,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:33,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536988539] [2024-05-12 13:31:33,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:33,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:33,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:33,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:33,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:33,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 105 transitions, 859 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:33,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:33,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:33,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:33,927 INFO L124 PetriNetUnfolderBase]: 747/1588 cut-off events. [2024-05-12 13:31:33,927 INFO L125 PetriNetUnfolderBase]: For 12812/12812 co-relation queries the response was YES. [2024-05-12 13:31:33,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6413 conditions, 1588 events. 747/1588 cut-off events. For 12812/12812 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10810 event pairs, 168 based on Foata normal form. 9/1529 useless extension candidates. Maximal degree in co-relation 6355. Up to 975 conditions per place. [2024-05-12 13:31:33,937 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 110 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2024-05-12 13:31:33,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 145 transitions, 1293 flow [2024-05-12 13:31:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-05-12 13:31:33,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2024-05-12 13:31:33,938 INFO L175 Difference]: Start difference. First operand has 122 places, 105 transitions, 859 flow. Second operand 9 states and 183 transitions. [2024-05-12 13:31:33,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 145 transitions, 1293 flow [2024-05-12 13:31:33,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 145 transitions, 1233 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:33,959 INFO L231 Difference]: Finished difference. Result has 124 places, 106 transitions, 871 flow [2024-05-12 13:31:33,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=871, PETRI_PLACES=124, PETRI_TRANSITIONS=106} [2024-05-12 13:31:33,960 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2024-05-12 13:31:33,960 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 106 transitions, 871 flow [2024-05-12 13:31:33,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:33,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:33,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:33,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:31:33,961 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:33,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1011399951, now seen corresponding path program 2 times [2024-05-12 13:31:33,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:33,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108341497] [2024-05-12 13:31:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:35,292 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 13:31:35,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:35,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108341497] [2024-05-12 13:31:35,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108341497] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:35,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:35,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:35,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569909984] [2024-05-12 13:31:35,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:35,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:35,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:35,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:35,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:35,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:35,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 106 transitions, 871 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:35,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:35,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:35,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:36,032 INFO L124 PetriNetUnfolderBase]: 846/1828 cut-off events. [2024-05-12 13:31:36,032 INFO L125 PetriNetUnfolderBase]: For 12463/12463 co-relation queries the response was YES. [2024-05-12 13:31:36,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7409 conditions, 1828 events. 846/1828 cut-off events. For 12463/12463 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12916 event pairs, 230 based on Foata normal form. 2/1744 useless extension candidates. Maximal degree in co-relation 7350. Up to 1250 conditions per place. [2024-05-12 13:31:36,048 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 111 selfloop transitions, 36 changer transitions 0/157 dead transitions. [2024-05-12 13:31:36,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 157 transitions, 1508 flow [2024-05-12 13:31:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:36,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-05-12 13:31:36,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-05-12 13:31:36,049 INFO L175 Difference]: Start difference. First operand has 124 places, 106 transitions, 871 flow. Second operand 10 states and 194 transitions. [2024-05-12 13:31:36,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 157 transitions, 1508 flow [2024-05-12 13:31:36,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 157 transitions, 1417 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:36,079 INFO L231 Difference]: Finished difference. Result has 132 places, 124 transitions, 1122 flow [2024-05-12 13:31:36,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1122, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2024-05-12 13:31:36,079 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-05-12 13:31:36,079 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 1122 flow [2024-05-12 13:31:36,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:36,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:36,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:36,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:31:36,080 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:36,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:36,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1821109171, now seen corresponding path program 3 times [2024-05-12 13:31:36,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:36,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038575401] [2024-05-12 13:31:36,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:36,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:37,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:37,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038575401] [2024-05-12 13:31:37,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038575401] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:37,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:37,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:37,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509900877] [2024-05-12 13:31:37,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:37,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:37,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:37,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:37,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 1122 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:37,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:37,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:37,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:37,902 INFO L124 PetriNetUnfolderBase]: 954/2097 cut-off events. [2024-05-12 13:31:37,903 INFO L125 PetriNetUnfolderBase]: For 14362/14362 co-relation queries the response was YES. [2024-05-12 13:31:37,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8620 conditions, 2097 events. 954/2097 cut-off events. For 14362/14362 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15557 event pairs, 290 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 8555. Up to 1377 conditions per place. [2024-05-12 13:31:37,917 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 120 selfloop transitions, 47 changer transitions 0/177 dead transitions. [2024-05-12 13:31:37,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 177 transitions, 1764 flow [2024-05-12 13:31:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-05-12 13:31:37,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:31:37,918 INFO L175 Difference]: Start difference. First operand has 132 places, 124 transitions, 1122 flow. Second operand 10 states and 200 transitions. [2024-05-12 13:31:37,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 177 transitions, 1764 flow [2024-05-12 13:31:37,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 177 transitions, 1701 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-05-12 13:31:37,948 INFO L231 Difference]: Finished difference. Result has 143 places, 138 transitions, 1377 flow [2024-05-12 13:31:37,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1377, PETRI_PLACES=143, PETRI_TRANSITIONS=138} [2024-05-12 13:31:37,949 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-05-12 13:31:37,949 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 1377 flow [2024-05-12 13:31:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:37,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:37,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:37,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:31:37,950 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:37,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:37,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1169763411, now seen corresponding path program 4 times [2024-05-12 13:31:37,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:37,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547202273] [2024-05-12 13:31:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:37,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:39,050 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 13:31:39,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547202273] [2024-05-12 13:31:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547202273] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:39,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:39,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:39,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662507729] [2024-05-12 13:31:39,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:39,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:39,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:39,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:39,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:39,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 1377 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:39,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:39,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:39,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:39,724 INFO L124 PetriNetUnfolderBase]: 1024/2257 cut-off events. [2024-05-12 13:31:39,724 INFO L125 PetriNetUnfolderBase]: For 17068/17068 co-relation queries the response was YES. [2024-05-12 13:31:39,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9670 conditions, 2257 events. 1024/2257 cut-off events. For 17068/17068 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 17167 event pairs, 343 based on Foata normal form. 2/2145 useless extension candidates. Maximal degree in co-relation 9600. Up to 1472 conditions per place. [2024-05-12 13:31:39,740 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 119 selfloop transitions, 49 changer transitions 0/178 dead transitions. [2024-05-12 13:31:39,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 178 transitions, 1927 flow [2024-05-12 13:31:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-05-12 13:31:39,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:31:39,742 INFO L175 Difference]: Start difference. First operand has 143 places, 138 transitions, 1377 flow. Second operand 10 states and 200 transitions. [2024-05-12 13:31:39,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 178 transitions, 1927 flow [2024-05-12 13:31:39,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 178 transitions, 1810 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:39,783 INFO L231 Difference]: Finished difference. Result has 148 places, 145 transitions, 1493 flow [2024-05-12 13:31:39,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1493, PETRI_PLACES=148, PETRI_TRANSITIONS=145} [2024-05-12 13:31:39,783 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 106 predicate places. [2024-05-12 13:31:39,784 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 145 transitions, 1493 flow [2024-05-12 13:31:39,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:39,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:39,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:39,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:31:39,784 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:39,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:39,785 INFO L85 PathProgramCache]: Analyzing trace with hash -224114643, now seen corresponding path program 5 times [2024-05-12 13:31:39,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:39,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696647519] [2024-05-12 13:31:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:39,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:40,954 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 13:31:40,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:40,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696647519] [2024-05-12 13:31:40,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696647519] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:40,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:40,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:40,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857527990] [2024-05-12 13:31:40,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:40,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:40,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:40,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:41,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:41,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 145 transitions, 1493 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:41,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:41,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:41,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:41,710 INFO L124 PetriNetUnfolderBase]: 1105/2453 cut-off events. [2024-05-12 13:31:41,711 INFO L125 PetriNetUnfolderBase]: For 18897/18897 co-relation queries the response was YES. [2024-05-12 13:31:41,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10489 conditions, 2453 events. 1105/2453 cut-off events. For 18897/18897 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 19058 event pairs, 337 based on Foata normal form. 2/2336 useless extension candidates. Maximal degree in co-relation 10417. Up to 1591 conditions per place. [2024-05-12 13:31:41,743 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 134 selfloop transitions, 46 changer transitions 0/190 dead transitions. [2024-05-12 13:31:41,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 190 transitions, 2089 flow [2024-05-12 13:31:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-05-12 13:31:41,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531578947368421 [2024-05-12 13:31:41,747 INFO L175 Difference]: Start difference. First operand has 148 places, 145 transitions, 1493 flow. Second operand 10 states and 202 transitions. [2024-05-12 13:31:41,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 190 transitions, 2089 flow [2024-05-12 13:31:41,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 190 transitions, 1972 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 13:31:41,792 INFO L231 Difference]: Finished difference. Result has 153 places, 151 transitions, 1567 flow [2024-05-12 13:31:41,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1567, PETRI_PLACES=153, PETRI_TRANSITIONS=151} [2024-05-12 13:31:41,792 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2024-05-12 13:31:41,793 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 151 transitions, 1567 flow [2024-05-12 13:31:41,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:41,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:41,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:41,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:31:41,793 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:41,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:41,794 INFO L85 PathProgramCache]: Analyzing trace with hash -224114395, now seen corresponding path program 2 times [2024-05-12 13:31:41,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:41,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336272185] [2024-05-12 13:31:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:41,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336272185] [2024-05-12 13:31:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336272185] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:42,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:42,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826520335] [2024-05-12 13:31:42,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:42,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:42,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:42,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:42,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 151 transitions, 1567 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:42,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:42,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:42,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:43,351 INFO L124 PetriNetUnfolderBase]: 1168/2590 cut-off events. [2024-05-12 13:31:43,351 INFO L125 PetriNetUnfolderBase]: For 23324/23324 co-relation queries the response was YES. [2024-05-12 13:31:43,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11081 conditions, 2590 events. 1168/2590 cut-off events. For 23324/23324 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 20488 event pairs, 341 based on Foata normal form. 9/2478 useless extension candidates. Maximal degree in co-relation 11005. Up to 1613 conditions per place. [2024-05-12 13:31:43,371 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 137 selfloop transitions, 46 changer transitions 0/193 dead transitions. [2024-05-12 13:31:43,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 193 transitions, 2131 flow [2024-05-12 13:31:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-05-12 13:31:43,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-05-12 13:31:43,373 INFO L175 Difference]: Start difference. First operand has 153 places, 151 transitions, 1567 flow. Second operand 10 states and 204 transitions. [2024-05-12 13:31:43,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 193 transitions, 2131 flow [2024-05-12 13:31:43,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 193 transitions, 2038 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:43,422 INFO L231 Difference]: Finished difference. Result has 158 places, 152 transitions, 1590 flow [2024-05-12 13:31:43,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1590, PETRI_PLACES=158, PETRI_TRANSITIONS=152} [2024-05-12 13:31:43,422 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-05-12 13:31:43,422 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 152 transitions, 1590 flow [2024-05-12 13:31:43,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:43,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:43,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:43,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:31:43,423 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:43,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:43,423 INFO L85 PathProgramCache]: Analyzing trace with hash -223884003, now seen corresponding path program 6 times [2024-05-12 13:31:43,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:43,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54868285] [2024-05-12 13:31:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:43,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:44,819 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 13:31:44,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:44,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54868285] [2024-05-12 13:31:44,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54868285] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:44,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:44,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:44,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670575090] [2024-05-12 13:31:44,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:44,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:44,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:44,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:44,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:44,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 152 transitions, 1590 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:44,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:44,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:44,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:45,617 INFO L124 PetriNetUnfolderBase]: 1206/2607 cut-off events. [2024-05-12 13:31:45,618 INFO L125 PetriNetUnfolderBase]: For 21232/21232 co-relation queries the response was YES. [2024-05-12 13:31:45,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11441 conditions, 2607 events. 1206/2607 cut-off events. For 21232/21232 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 20352 event pairs, 313 based on Foata normal form. 2/2507 useless extension candidates. Maximal degree in co-relation 11364. Up to 1487 conditions per place. [2024-05-12 13:31:45,647 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 125 selfloop transitions, 59 changer transitions 0/194 dead transitions. [2024-05-12 13:31:45,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 194 transitions, 2170 flow [2024-05-12 13:31:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-05-12 13:31:45,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531578947368421 [2024-05-12 13:31:45,649 INFO L175 Difference]: Start difference. First operand has 158 places, 152 transitions, 1590 flow. Second operand 10 states and 202 transitions. [2024-05-12 13:31:45,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 194 transitions, 2170 flow [2024-05-12 13:31:45,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 194 transitions, 2066 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-05-12 13:31:45,709 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 1700 flow [2024-05-12 13:31:45,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1700, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2024-05-12 13:31:45,709 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-05-12 13:31:45,710 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 1700 flow [2024-05-12 13:31:45,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:45,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:45,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:45,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:31:45,710 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:45,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash -223883755, now seen corresponding path program 3 times [2024-05-12 13:31:45,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:45,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851419968] [2024-05-12 13:31:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:45,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:46,904 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 13:31:46,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:46,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851419968] [2024-05-12 13:31:46,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851419968] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:46,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:46,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:46,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922755255] [2024-05-12 13:31:46,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:46,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:46,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:47,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:47,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 1700 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:47,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:47,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:47,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:47,511 INFO L124 PetriNetUnfolderBase]: 1268/2805 cut-off events. [2024-05-12 13:31:47,511 INFO L125 PetriNetUnfolderBase]: For 23354/23354 co-relation queries the response was YES. [2024-05-12 13:31:47,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12310 conditions, 2805 events. 1268/2805 cut-off events. For 23354/23354 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 22131 event pairs, 343 based on Foata normal form. 1/2655 useless extension candidates. Maximal degree in co-relation 12230. Up to 1550 conditions per place. [2024-05-12 13:31:47,534 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 133 selfloop transitions, 60 changer transitions 0/203 dead transitions. [2024-05-12 13:31:47,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 203 transitions, 2390 flow [2024-05-12 13:31:47,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:47,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-05-12 13:31:47,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-05-12 13:31:47,537 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 1700 flow. Second operand 10 states and 205 transitions. [2024-05-12 13:31:47,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 203 transitions, 2390 flow [2024-05-12 13:31:47,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 203 transitions, 2274 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-05-12 13:31:47,601 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 1832 flow [2024-05-12 13:31:47,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1832, PETRI_PLACES=168, PETRI_TRANSITIONS=166} [2024-05-12 13:31:47,601 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-05-12 13:31:47,601 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 1832 flow [2024-05-12 13:31:47,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:47,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:47,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:47,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:31:47,602 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:47,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1547721175, now seen corresponding path program 4 times [2024-05-12 13:31:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:47,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030218152] [2024-05-12 13:31:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:47,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:48,759 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 13:31:48,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030218152] [2024-05-12 13:31:48,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030218152] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:48,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:48,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:48,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49400296] [2024-05-12 13:31:48,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:48,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:48,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:48,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:48,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:48,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 1832 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:48,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:48,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:48,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:49,520 INFO L124 PetriNetUnfolderBase]: 1266/2727 cut-off events. [2024-05-12 13:31:49,521 INFO L125 PetriNetUnfolderBase]: For 24056/24056 co-relation queries the response was YES. [2024-05-12 13:31:49,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12456 conditions, 2727 events. 1266/2727 cut-off events. For 24056/24056 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21098 event pairs, 313 based on Foata normal form. 1/2603 useless extension candidates. Maximal degree in co-relation 12373. Up to 1548 conditions per place. [2024-05-12 13:31:49,544 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 127 selfloop transitions, 66 changer transitions 0/203 dead transitions. [2024-05-12 13:31:49,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 203 transitions, 2376 flow [2024-05-12 13:31:49,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:31:49,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:31:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-05-12 13:31:49,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-05-12 13:31:49,548 INFO L175 Difference]: Start difference. First operand has 168 places, 166 transitions, 1832 flow. Second operand 10 states and 204 transitions. [2024-05-12 13:31:49,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 203 transitions, 2376 flow [2024-05-12 13:31:49,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 203 transitions, 2278 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-05-12 13:31:49,630 INFO L231 Difference]: Finished difference. Result has 173 places, 166 transitions, 1871 flow [2024-05-12 13:31:49,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1871, PETRI_PLACES=173, PETRI_TRANSITIONS=166} [2024-05-12 13:31:49,631 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 131 predicate places. [2024-05-12 13:31:49,631 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 166 transitions, 1871 flow [2024-05-12 13:31:49,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:49,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:49,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:49,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:31:49,632 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:49,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:49,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1156184211, now seen corresponding path program 7 times [2024-05-12 13:31:49,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:49,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407512611] [2024-05-12 13:31:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:49,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:51,201 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 13:31:51,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:51,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407512611] [2024-05-12 13:31:51,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407512611] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:51,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:51,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:51,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281351412] [2024-05-12 13:31:51,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:51,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:51,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:51,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:51,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 166 transitions, 1871 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:51,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:51,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:51,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:51,994 INFO L124 PetriNetUnfolderBase]: 1282/2813 cut-off events. [2024-05-12 13:31:51,994 INFO L125 PetriNetUnfolderBase]: For 26761/26761 co-relation queries the response was YES. [2024-05-12 13:31:52,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12972 conditions, 2813 events. 1282/2813 cut-off events. For 26761/26761 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 22328 event pairs, 215 based on Foata normal form. 2/2700 useless extension candidates. Maximal degree in co-relation 12887. Up to 1694 conditions per place. [2024-05-12 13:31:52,019 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 147 selfloop transitions, 45 changer transitions 0/202 dead transitions. [2024-05-12 13:31:52,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 202 transitions, 2455 flow [2024-05-12 13:31:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-05-12 13:31:52,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:31:52,021 INFO L175 Difference]: Start difference. First operand has 173 places, 166 transitions, 1871 flow. Second operand 9 states and 180 transitions. [2024-05-12 13:31:52,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 202 transitions, 2455 flow [2024-05-12 13:31:52,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 202 transitions, 2355 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:52,106 INFO L231 Difference]: Finished difference. Result has 175 places, 167 transitions, 1897 flow [2024-05-12 13:31:52,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1897, PETRI_PLACES=175, PETRI_TRANSITIONS=167} [2024-05-12 13:31:52,107 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 133 predicate places. [2024-05-12 13:31:52,107 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 167 transitions, 1897 flow [2024-05-12 13:31:52,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:52,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:52,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:52,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:31:52,108 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:52,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:52,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1156184459, now seen corresponding path program 5 times [2024-05-12 13:31:52,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:52,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974345851] [2024-05-12 13:31:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:52,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:53,224 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 13:31:53,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:53,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974345851] [2024-05-12 13:31:53,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974345851] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:53,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:53,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:53,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062066811] [2024-05-12 13:31:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:53,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:53,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 167 transitions, 1897 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:53,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:53,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:53,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:53,946 INFO L124 PetriNetUnfolderBase]: 1309/2874 cut-off events. [2024-05-12 13:31:53,946 INFO L125 PetriNetUnfolderBase]: For 29151/29151 co-relation queries the response was YES. [2024-05-12 13:31:53,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13359 conditions, 2874 events. 1309/2874 cut-off events. For 29151/29151 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 22796 event pairs, 316 based on Foata normal form. 3/2753 useless extension candidates. Maximal degree in co-relation 13273. Up to 1771 conditions per place. [2024-05-12 13:31:53,968 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 145 selfloop transitions, 51 changer transitions 0/206 dead transitions. [2024-05-12 13:31:53,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 206 transitions, 2505 flow [2024-05-12 13:31:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:53,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:53,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-05-12 13:31:53,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2024-05-12 13:31:53,970 INFO L175 Difference]: Start difference. First operand has 175 places, 167 transitions, 1897 flow. Second operand 9 states and 183 transitions. [2024-05-12 13:31:53,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 206 transitions, 2505 flow [2024-05-12 13:31:54,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 206 transitions, 2391 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:54,046 INFO L231 Difference]: Finished difference. Result has 177 places, 170 transitions, 1939 flow [2024-05-12 13:31:54,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1939, PETRI_PLACES=177, PETRI_TRANSITIONS=170} [2024-05-12 13:31:54,047 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2024-05-12 13:31:54,047 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 170 transitions, 1939 flow [2024-05-12 13:31:54,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:54,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:54,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:54,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:31:54,048 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:54,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:54,048 INFO L85 PathProgramCache]: Analyzing trace with hash 201006373, now seen corresponding path program 6 times [2024-05-12 13:31:54,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:54,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168926851] [2024-05-12 13:31:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:54,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:55,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:55,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168926851] [2024-05-12 13:31:55,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168926851] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:55,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:55,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:55,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86252903] [2024-05-12 13:31:55,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:55,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:55,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:55,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:55,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:55,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:55,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 170 transitions, 1939 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:55,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:55,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:55,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:55,885 INFO L124 PetriNetUnfolderBase]: 1411/2961 cut-off events. [2024-05-12 13:31:55,886 INFO L125 PetriNetUnfolderBase]: For 36446/36446 co-relation queries the response was YES. [2024-05-12 13:31:55,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14757 conditions, 2961 events. 1411/2961 cut-off events. For 36446/36446 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 23383 event pairs, 228 based on Foata normal form. 3/2863 useless extension candidates. Maximal degree in co-relation 14670. Up to 1156 conditions per place. [2024-05-12 13:31:55,912 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 137 selfloop transitions, 68 changer transitions 0/215 dead transitions. [2024-05-12 13:31:55,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 215 transitions, 2770 flow [2024-05-12 13:31:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-05-12 13:31:55,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-05-12 13:31:55,922 INFO L175 Difference]: Start difference. First operand has 177 places, 170 transitions, 1939 flow. Second operand 9 states and 189 transitions. [2024-05-12 13:31:55,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 215 transitions, 2770 flow [2024-05-12 13:31:56,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 215 transitions, 2650 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:56,025 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 2069 flow [2024-05-12 13:31:56,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2069, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2024-05-12 13:31:56,032 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 137 predicate places. [2024-05-12 13:31:56,032 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 2069 flow [2024-05-12 13:31:56,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:56,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:56,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:56,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:31:56,033 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:56,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:56,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1156414851, now seen corresponding path program 8 times [2024-05-12 13:31:56,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:56,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674631973] [2024-05-12 13:31:56,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:56,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:57,231 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 13:31:57,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:57,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674631973] [2024-05-12 13:31:57,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674631973] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:57,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:57,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:57,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166808694] [2024-05-12 13:31:57,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:57,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:57,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:57,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:57,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:57,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:57,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 2069 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:57,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:57,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:57,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:58,033 INFO L124 PetriNetUnfolderBase]: 1427/3043 cut-off events. [2024-05-12 13:31:58,034 INFO L125 PetriNetUnfolderBase]: For 38878/38878 co-relation queries the response was YES. [2024-05-12 13:31:58,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15178 conditions, 3043 events. 1427/3043 cut-off events. For 38878/38878 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 24243 event pairs, 315 based on Foata normal form. 2/2951 useless extension candidates. Maximal degree in co-relation 15090. Up to 1628 conditions per place. [2024-05-12 13:31:58,062 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 131 selfloop transitions, 67 changer transitions 0/208 dead transitions. [2024-05-12 13:31:58,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 208 transitions, 2619 flow [2024-05-12 13:31:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-05-12 13:31:58,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321637426900585 [2024-05-12 13:31:58,064 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 2069 flow. Second operand 9 states and 182 transitions. [2024-05-12 13:31:58,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 208 transitions, 2619 flow [2024-05-12 13:31:58,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 208 transitions, 2533 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-05-12 13:31:58,199 INFO L231 Difference]: Finished difference. Result has 185 places, 175 transitions, 2153 flow [2024-05-12 13:31:58,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2153, PETRI_PLACES=185, PETRI_TRANSITIONS=175} [2024-05-12 13:31:58,200 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-05-12 13:31:58,200 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 175 transitions, 2153 flow [2024-05-12 13:31:58,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:58,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:58,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:58,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:31:58,201 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:58,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:58,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1940806487, now seen corresponding path program 7 times [2024-05-12 13:31:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:58,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14005175] [2024-05-12 13:31:58,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:58,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:59,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:59,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14005175] [2024-05-12 13:31:59,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14005175] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:59,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:59,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:31:59,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718665814] [2024-05-12 13:31:59,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:59,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:31:59,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:59,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:31:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:31:59,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:31:59,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 175 transitions, 2153 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:31:59,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:59,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:31:59,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:59,945 INFO L124 PetriNetUnfolderBase]: 1425/3140 cut-off events. [2024-05-12 13:31:59,945 INFO L125 PetriNetUnfolderBase]: For 36788/36788 co-relation queries the response was YES. [2024-05-12 13:31:59,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15166 conditions, 3140 events. 1425/3140 cut-off events. For 36788/36788 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 25333 event pairs, 299 based on Foata normal form. 1/2987 useless extension candidates. Maximal degree in co-relation 15076. Up to 1545 conditions per place. [2024-05-12 13:31:59,973 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 122 selfloop transitions, 82 changer transitions 0/214 dead transitions. [2024-05-12 13:31:59,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 214 transitions, 2761 flow [2024-05-12 13:31:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:31:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:31:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-05-12 13:31:59,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2024-05-12 13:31:59,977 INFO L175 Difference]: Start difference. First operand has 185 places, 175 transitions, 2153 flow. Second operand 9 states and 184 transitions. [2024-05-12 13:31:59,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 214 transitions, 2761 flow [2024-05-12 13:32:00,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 214 transitions, 2603 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:00,096 INFO L231 Difference]: Finished difference. Result has 188 places, 181 transitions, 2278 flow [2024-05-12 13:32:00,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2278, PETRI_PLACES=188, PETRI_TRANSITIONS=181} [2024-05-12 13:32:00,098 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 146 predicate places. [2024-05-12 13:32:00,098 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 181 transitions, 2278 flow [2024-05-12 13:32:00,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:00,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:00,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:00,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:32:00,101 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:00,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:00,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1587775875, now seen corresponding path program 8 times [2024-05-12 13:32:00,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:00,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492621653] [2024-05-12 13:32:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:00,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:01,400 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 13:32:01,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:01,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492621653] [2024-05-12 13:32:01,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492621653] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:01,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:01,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:01,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584235448] [2024-05-12 13:32:01,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:01,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:01,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:01,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:01,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:01,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 181 transitions, 2278 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:01,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:01,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:01,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:02,294 INFO L124 PetriNetUnfolderBase]: 1436/3273 cut-off events. [2024-05-12 13:32:02,295 INFO L125 PetriNetUnfolderBase]: For 37766/37766 co-relation queries the response was YES. [2024-05-12 13:32:02,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15595 conditions, 3273 events. 1436/3273 cut-off events. For 37766/37766 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27220 event pairs, 639 based on Foata normal form. 1/3075 useless extension candidates. Maximal degree in co-relation 15503. Up to 2384 conditions per place. [2024-05-12 13:32:02,375 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 187 selfloop transitions, 16 changer transitions 0/213 dead transitions. [2024-05-12 13:32:02,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 213 transitions, 2846 flow [2024-05-12 13:32:02,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:02,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-05-12 13:32:02,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2024-05-12 13:32:02,382 INFO L175 Difference]: Start difference. First operand has 188 places, 181 transitions, 2278 flow. Second operand 9 states and 175 transitions. [2024-05-12 13:32:02,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 213 transitions, 2846 flow [2024-05-12 13:32:02,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 213 transitions, 2726 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 13:32:02,483 INFO L231 Difference]: Finished difference. Result has 191 places, 183 transitions, 2235 flow [2024-05-12 13:32:02,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2235, PETRI_PLACES=191, PETRI_TRANSITIONS=183} [2024-05-12 13:32:02,484 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 149 predicate places. [2024-05-12 13:32:02,484 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 183 transitions, 2235 flow [2024-05-12 13:32:02,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:02,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:02,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:02,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:32:02,485 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:02,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1587478957, now seen corresponding path program 9 times [2024-05-12 13:32:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:02,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457647318] [2024-05-12 13:32:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:02,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:03,873 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 13:32:03,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:03,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457647318] [2024-05-12 13:32:03,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457647318] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:03,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:03,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:03,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019389893] [2024-05-12 13:32:03,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:03,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:03,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:04,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:04,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 183 transitions, 2235 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:04,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:04,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:04,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:04,666 INFO L124 PetriNetUnfolderBase]: 1456/3220 cut-off events. [2024-05-12 13:32:04,666 INFO L125 PetriNetUnfolderBase]: For 37396/37396 co-relation queries the response was YES. [2024-05-12 13:32:04,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15629 conditions, 3220 events. 1456/3220 cut-off events. For 37396/37396 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 26207 event pairs, 271 based on Foata normal form. 2/3075 useless extension candidates. Maximal degree in co-relation 15536. Up to 1478 conditions per place. [2024-05-12 13:32:04,694 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 135 selfloop transitions, 75 changer transitions 0/220 dead transitions. [2024-05-12 13:32:04,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 220 transitions, 2947 flow [2024-05-12 13:32:04,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:04,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-05-12 13:32:04,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2024-05-12 13:32:04,695 INFO L175 Difference]: Start difference. First operand has 191 places, 183 transitions, 2235 flow. Second operand 9 states and 184 transitions. [2024-05-12 13:32:04,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 220 transitions, 2947 flow [2024-05-12 13:32:04,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 220 transitions, 2887 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:04,813 INFO L231 Difference]: Finished difference. Result has 193 places, 185 transitions, 2387 flow [2024-05-12 13:32:04,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2387, PETRI_PLACES=193, PETRI_TRANSITIONS=185} [2024-05-12 13:32:04,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 151 predicate places. [2024-05-12 13:32:04,814 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 185 transitions, 2387 flow [2024-05-12 13:32:04,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:04,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:04,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:04,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:32:04,819 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:04,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:04,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1587479205, now seen corresponding path program 9 times [2024-05-12 13:32:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:04,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981044163] [2024-05-12 13:32:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:05,723 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 13:32:05,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:05,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981044163] [2024-05-12 13:32:05,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981044163] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:05,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:05,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:05,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644249937] [2024-05-12 13:32:05,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:05,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:05,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:05,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:05,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:05,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 185 transitions, 2387 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:05,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:05,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:05,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:06,490 INFO L124 PetriNetUnfolderBase]: 1569/3302 cut-off events. [2024-05-12 13:32:06,490 INFO L125 PetriNetUnfolderBase]: For 49254/49254 co-relation queries the response was YES. [2024-05-12 13:32:06,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17534 conditions, 3302 events. 1569/3302 cut-off events. For 49254/49254 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 26592 event pairs, 159 based on Foata normal form. 3/3209 useless extension candidates. Maximal degree in co-relation 17440. Up to 1249 conditions per place. [2024-05-12 13:32:06,522 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 141 selfloop transitions, 81 changer transitions 0/232 dead transitions. [2024-05-12 13:32:06,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 232 transitions, 3371 flow [2024-05-12 13:32:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:06,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-05-12 13:32:06,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564327485380117 [2024-05-12 13:32:06,524 INFO L175 Difference]: Start difference. First operand has 193 places, 185 transitions, 2387 flow. Second operand 9 states and 193 transitions. [2024-05-12 13:32:06,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 232 transitions, 3371 flow [2024-05-12 13:32:06,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 232 transitions, 3280 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 13:32:06,703 INFO L231 Difference]: Finished difference. Result has 198 places, 190 transitions, 2602 flow [2024-05-12 13:32:06,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2602, PETRI_PLACES=198, PETRI_TRANSITIONS=190} [2024-05-12 13:32:06,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-05-12 13:32:06,705 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 190 transitions, 2602 flow [2024-05-12 13:32:06,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:06,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:06,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:06,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:32:06,705 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:06,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1587487885, now seen corresponding path program 1 times [2024-05-12 13:32:06,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:06,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137998575] [2024-05-12 13:32:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:06,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:08,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137998575] [2024-05-12 13:32:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137998575] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:08,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:08,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:08,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704087104] [2024-05-12 13:32:08,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:08,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:08,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:08,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:08,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:08,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 190 transitions, 2602 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:08,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:08,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:08,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:08,939 INFO L124 PetriNetUnfolderBase]: 1566/3473 cut-off events. [2024-05-12 13:32:08,939 INFO L125 PetriNetUnfolderBase]: For 49905/49905 co-relation queries the response was YES. [2024-05-12 13:32:08,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18046 conditions, 3473 events. 1566/3473 cut-off events. For 49905/49905 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 28980 event pairs, 501 based on Foata normal form. 2/3291 useless extension candidates. Maximal degree in co-relation 17949. Up to 2471 conditions per place. [2024-05-12 13:32:08,968 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 171 selfloop transitions, 40 changer transitions 0/221 dead transitions. [2024-05-12 13:32:08,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 221 transitions, 3152 flow [2024-05-12 13:32:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-05-12 13:32:08,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:32:08,972 INFO L175 Difference]: Start difference. First operand has 198 places, 190 transitions, 2602 flow. Second operand 9 states and 180 transitions. [2024-05-12 13:32:08,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 221 transitions, 3152 flow [2024-05-12 13:32:09,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 221 transitions, 3062 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-05-12 13:32:09,148 INFO L231 Difference]: Finished difference. Result has 205 places, 190 transitions, 2596 flow [2024-05-12 13:32:09,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2596, PETRI_PLACES=205, PETRI_TRANSITIONS=190} [2024-05-12 13:32:09,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-05-12 13:32:09,149 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 190 transitions, 2596 flow [2024-05-12 13:32:09,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:09,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:09,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:09,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:32:09,149 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:09,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:09,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1302148447, now seen corresponding path program 10 times [2024-05-12 13:32:09,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:09,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382866524] [2024-05-12 13:32:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:09,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:10,234 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 13:32:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:10,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382866524] [2024-05-12 13:32:10,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382866524] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:10,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:10,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:10,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041687965] [2024-05-12 13:32:10,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:10,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:10,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:10,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:10,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:10,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 190 transitions, 2596 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:10,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:10,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:10,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:11,208 INFO L124 PetriNetUnfolderBase]: 1582/3488 cut-off events. [2024-05-12 13:32:11,209 INFO L125 PetriNetUnfolderBase]: For 49894/49894 co-relation queries the response was YES. [2024-05-12 13:32:11,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18133 conditions, 3488 events. 1582/3488 cut-off events. For 49894/49894 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 29049 event pairs, 342 based on Foata normal form. 2/3342 useless extension candidates. Maximal degree in co-relation 18034. Up to 2301 conditions per place. [2024-05-12 13:32:11,240 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 168 selfloop transitions, 47 changer transitions 0/225 dead transitions. [2024-05-12 13:32:11,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 225 transitions, 3190 flow [2024-05-12 13:32:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-05-12 13:32:11,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321637426900585 [2024-05-12 13:32:11,242 INFO L175 Difference]: Start difference. First operand has 205 places, 190 transitions, 2596 flow. Second operand 9 states and 182 transitions. [2024-05-12 13:32:11,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 225 transitions, 3190 flow [2024-05-12 13:32:11,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 225 transitions, 3098 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:11,384 INFO L231 Difference]: Finished difference. Result has 206 places, 191 transitions, 2634 flow [2024-05-12 13:32:11,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2634, PETRI_PLACES=206, PETRI_TRANSITIONS=191} [2024-05-12 13:32:11,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-05-12 13:32:11,385 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 191 transitions, 2634 flow [2024-05-12 13:32:11,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:11,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:11,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:11,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:32:11,386 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:11,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:11,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1226742453, now seen corresponding path program 10 times [2024-05-12 13:32:11,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:11,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595697921] [2024-05-12 13:32:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:11,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:12,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:12,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595697921] [2024-05-12 13:32:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595697921] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:12,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:12,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:12,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122546733] [2024-05-12 13:32:12,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:12,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:12,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:12,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:12,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 191 transitions, 2634 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:12,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:12,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:12,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:13,249 INFO L124 PetriNetUnfolderBase]: 1602/3525 cut-off events. [2024-05-12 13:32:13,250 INFO L125 PetriNetUnfolderBase]: For 54625/54625 co-relation queries the response was YES. [2024-05-12 13:32:13,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18310 conditions, 3525 events. 1602/3525 cut-off events. For 54625/54625 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 29328 event pairs, 320 based on Foata normal form. 9/3386 useless extension candidates. Maximal degree in co-relation 18210. Up to 2238 conditions per place. [2024-05-12 13:32:13,283 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 171 selfloop transitions, 47 changer transitions 0/228 dead transitions. [2024-05-12 13:32:13,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 228 transitions, 3246 flow [2024-05-12 13:32:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-05-12 13:32:13,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2024-05-12 13:32:13,284 INFO L175 Difference]: Start difference. First operand has 206 places, 191 transitions, 2634 flow. Second operand 9 states and 184 transitions. [2024-05-12 13:32:13,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 228 transitions, 3246 flow [2024-05-12 13:32:13,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 228 transitions, 3128 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:13,437 INFO L231 Difference]: Finished difference. Result has 208 places, 192 transitions, 2644 flow [2024-05-12 13:32:13,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2516, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2644, PETRI_PLACES=208, PETRI_TRANSITIONS=192} [2024-05-12 13:32:13,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2024-05-12 13:32:13,438 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 192 transitions, 2644 flow [2024-05-12 13:32:13,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:13,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:13,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:13,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:32:13,439 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:13,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:13,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1226511813, now seen corresponding path program 11 times [2024-05-12 13:32:13,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:13,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386655687] [2024-05-12 13:32:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:13,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:14,435 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 13:32:14,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:14,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386655687] [2024-05-12 13:32:14,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386655687] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:14,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:14,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:14,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100327947] [2024-05-12 13:32:14,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:14,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:14,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:14,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:14,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:14,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:14,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 192 transitions, 2644 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:14,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:14,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:14,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:15,308 INFO L124 PetriNetUnfolderBase]: 1629/3559 cut-off events. [2024-05-12 13:32:15,309 INFO L125 PetriNetUnfolderBase]: For 51468/51468 co-relation queries the response was YES. [2024-05-12 13:32:15,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18607 conditions, 3559 events. 1629/3559 cut-off events. For 51468/51468 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 29529 event pairs, 330 based on Foata normal form. 3/3420 useless extension candidates. Maximal degree in co-relation 18506. Up to 2145 conditions per place. [2024-05-12 13:32:15,341 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 171 selfloop transitions, 52 changer transitions 0/233 dead transitions. [2024-05-12 13:32:15,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 233 transitions, 3382 flow [2024-05-12 13:32:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-05-12 13:32:15,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-05-12 13:32:15,347 INFO L175 Difference]: Start difference. First operand has 208 places, 192 transitions, 2644 flow. Second operand 9 states and 190 transitions. [2024-05-12 13:32:15,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 233 transitions, 3382 flow [2024-05-12 13:32:15,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 233 transitions, 3272 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:15,501 INFO L231 Difference]: Finished difference. Result has 210 places, 193 transitions, 2672 flow [2024-05-12 13:32:15,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2672, PETRI_PLACES=210, PETRI_TRANSITIONS=193} [2024-05-12 13:32:15,502 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 168 predicate places. [2024-05-12 13:32:15,502 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 193 transitions, 2672 flow [2024-05-12 13:32:15,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:15,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:15,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:15,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:32:15,503 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:15,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash -941403573, now seen corresponding path program 12 times [2024-05-12 13:32:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:15,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574530018] [2024-05-12 13:32:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:16,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:16,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574530018] [2024-05-12 13:32:16,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574530018] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:16,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:16,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:16,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006700536] [2024-05-12 13:32:16,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:16,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:16,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:16,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:16,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 193 transitions, 2672 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:16,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:16,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:16,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:17,290 INFO L124 PetriNetUnfolderBase]: 1643/3685 cut-off events. [2024-05-12 13:32:17,291 INFO L125 PetriNetUnfolderBase]: For 51529/51529 co-relation queries the response was YES. [2024-05-12 13:32:17,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18790 conditions, 3685 events. 1643/3685 cut-off events. For 51529/51529 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 30943 event pairs, 318 based on Foata normal form. 3/3502 useless extension candidates. Maximal degree in co-relation 18688. Up to 1290 conditions per place. [2024-05-12 13:32:17,325 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 143 selfloop transitions, 82 changer transitions 0/235 dead transitions. [2024-05-12 13:32:17,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 235 transitions, 3500 flow [2024-05-12 13:32:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-05-12 13:32:17,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564327485380117 [2024-05-12 13:32:17,327 INFO L175 Difference]: Start difference. First operand has 210 places, 193 transitions, 2672 flow. Second operand 9 states and 193 transitions. [2024-05-12 13:32:17,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 235 transitions, 3500 flow [2024-05-12 13:32:17,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 235 transitions, 3330 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:17,487 INFO L231 Difference]: Finished difference. Result has 211 places, 194 transitions, 2695 flow [2024-05-12 13:32:17,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2695, PETRI_PLACES=211, PETRI_TRANSITIONS=194} [2024-05-12 13:32:17,487 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 169 predicate places. [2024-05-12 13:32:17,488 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 194 transitions, 2695 flow [2024-05-12 13:32:17,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:17,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:17,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:17,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:32:17,492 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:17,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:17,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1226512061, now seen corresponding path program 11 times [2024-05-12 13:32:17,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:17,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032888419] [2024-05-12 13:32:17,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:17,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:19,043 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 13:32:19,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:19,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032888419] [2024-05-12 13:32:19,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032888419] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:19,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:19,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:19,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950390454] [2024-05-12 13:32:19,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:19,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:19,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:19,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:19,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:19,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:19,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 194 transitions, 2695 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:19,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:19,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:19,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:19,996 INFO L124 PetriNetUnfolderBase]: 1640/3600 cut-off events. [2024-05-12 13:32:19,997 INFO L125 PetriNetUnfolderBase]: For 47629/47629 co-relation queries the response was YES. [2024-05-12 13:32:20,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18469 conditions, 3600 events. 1640/3600 cut-off events. For 47629/47629 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 30027 event pairs, 337 based on Foata normal form. 2/3457 useless extension candidates. Maximal degree in co-relation 18367. Up to 2354 conditions per place. [2024-05-12 13:32:20,035 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 168 selfloop transitions, 50 changer transitions 0/228 dead transitions. [2024-05-12 13:32:20,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 228 transitions, 3265 flow [2024-05-12 13:32:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-05-12 13:32:20,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2024-05-12 13:32:20,036 INFO L175 Difference]: Start difference. First operand has 211 places, 194 transitions, 2695 flow. Second operand 9 states and 184 transitions. [2024-05-12 13:32:20,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 228 transitions, 3265 flow [2024-05-12 13:32:20,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 228 transitions, 3094 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 13:32:20,216 INFO L231 Difference]: Finished difference. Result has 214 places, 194 transitions, 2628 flow [2024-05-12 13:32:20,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2628, PETRI_PLACES=214, PETRI_TRANSITIONS=194} [2024-05-12 13:32:20,217 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2024-05-12 13:32:20,217 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 194 transitions, 2628 flow [2024-05-12 13:32:20,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:20,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:20,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:20,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:32:20,218 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:20,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1226503443, now seen corresponding path program 13 times [2024-05-12 13:32:20,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:20,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973437906] [2024-05-12 13:32:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:20,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:21,203 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 13:32:21,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:21,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973437906] [2024-05-12 13:32:21,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973437906] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:21,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:21,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:32:21,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260959696] [2024-05-12 13:32:21,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:21,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:32:21,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:21,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:32:21,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:32:21,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:21,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 194 transitions, 2628 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:21,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:21,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:21,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:22,103 INFO L124 PetriNetUnfolderBase]: 1635/3577 cut-off events. [2024-05-12 13:32:22,103 INFO L125 PetriNetUnfolderBase]: For 43879/43879 co-relation queries the response was YES. [2024-05-12 13:32:22,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17904 conditions, 3577 events. 1635/3577 cut-off events. For 43879/43879 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 29755 event pairs, 311 based on Foata normal form. 3/3439 useless extension candidates. Maximal degree in co-relation 17801. Up to 2162 conditions per place. [2024-05-12 13:32:22,142 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 169 selfloop transitions, 53 changer transitions 0/232 dead transitions. [2024-05-12 13:32:22,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 232 transitions, 3234 flow [2024-05-12 13:32:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:32:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:32:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-05-12 13:32:22,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497076023391813 [2024-05-12 13:32:22,144 INFO L175 Difference]: Start difference. First operand has 214 places, 194 transitions, 2628 flow. Second operand 9 states and 188 transitions. [2024-05-12 13:32:22,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 232 transitions, 3234 flow [2024-05-12 13:32:22,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 232 transitions, 2960 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-05-12 13:32:22,311 INFO L231 Difference]: Finished difference. Result has 212 places, 194 transitions, 2465 flow [2024-05-12 13:32:22,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2354, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2465, PETRI_PLACES=212, PETRI_TRANSITIONS=194} [2024-05-12 13:32:22,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-05-12 13:32:22,312 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 194 transitions, 2465 flow [2024-05-12 13:32:22,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 13:32:22,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:22,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:22,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:32:22,318 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:22,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:22,318 INFO L85 PathProgramCache]: Analyzing trace with hash -173614592, now seen corresponding path program 1 times [2024-05-12 13:32:22,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:22,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670952207] [2024-05-12 13:32:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:22,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:22,371 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 13:32:22,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:22,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670952207] [2024-05-12 13:32:22,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670952207] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:22,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:22,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:32:22,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614614134] [2024-05-12 13:32:22,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:22,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:32:22,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:22,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:32:22,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:32:22,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-05-12 13:32:22,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 194 transitions, 2465 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 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 13:32:22,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:22,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-05-12 13:32:22,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:22,871 INFO L124 PetriNetUnfolderBase]: 1376/3403 cut-off events. [2024-05-12 13:32:22,872 INFO L125 PetriNetUnfolderBase]: For 28377/28473 co-relation queries the response was YES. [2024-05-12 13:32:22,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13679 conditions, 3403 events. 1376/3403 cut-off events. For 28377/28473 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 29121 event pairs, 189 based on Foata normal form. 264/3483 useless extension candidates. Maximal degree in co-relation 13578. Up to 1191 conditions per place. [2024-05-12 13:32:22,900 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 167 selfloop transitions, 4 changer transitions 0/242 dead transitions. [2024-05-12 13:32:22,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 242 transitions, 3482 flow [2024-05-12 13:32:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:32:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:32:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-05-12 13:32:22,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6644736842105263 [2024-05-12 13:32:22,902 INFO L175 Difference]: Start difference. First operand has 212 places, 194 transitions, 2465 flow. Second operand 4 states and 101 transitions. [2024-05-12 13:32:22,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 242 transitions, 3482 flow [2024-05-12 13:32:22,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 242 transitions, 3196 flow, removed 13 selfloop flow, removed 15 redundant places. [2024-05-12 13:32:22,994 INFO L231 Difference]: Finished difference. Result has 202 places, 180 transitions, 2044 flow [2024-05-12 13:32:22,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2044, PETRI_PLACES=202, PETRI_TRANSITIONS=180} [2024-05-12 13:32:22,994 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2024-05-12 13:32:22,995 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 180 transitions, 2044 flow [2024-05-12 13:32:22,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 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 13:32:22,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:22,995 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 13:32:22,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:32:22,995 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:22,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1686493504, now seen corresponding path program 1 times [2024-05-12 13:32:22,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:22,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934983312] [2024-05-12 13:32:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:22,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:24,329 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 13:32:24,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:24,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934983312] [2024-05-12 13:32:24,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934983312] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:24,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:24,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321259172] [2024-05-12 13:32:24,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:24,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:24,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:24,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:24,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:24,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:24,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 180 transitions, 2044 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:24,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:24,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:24,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:25,287 INFO L124 PetriNetUnfolderBase]: 1502/3672 cut-off events. [2024-05-12 13:32:25,287 INFO L125 PetriNetUnfolderBase]: For 42050/42122 co-relation queries the response was YES. [2024-05-12 13:32:25,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14947 conditions, 3672 events. 1502/3672 cut-off events. For 42050/42122 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 31682 event pairs, 453 based on Foata normal form. 16/3395 useless extension candidates. Maximal degree in co-relation 14850. Up to 2362 conditions per place. [2024-05-12 13:32:25,319 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 185 selfloop transitions, 35 changer transitions 0/233 dead transitions. [2024-05-12 13:32:25,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 233 transitions, 2742 flow [2024-05-12 13:32:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-05-12 13:32:25,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143540669856459 [2024-05-12 13:32:25,322 INFO L175 Difference]: Start difference. First operand has 202 places, 180 transitions, 2044 flow. Second operand 11 states and 215 transitions. [2024-05-12 13:32:25,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 233 transitions, 2742 flow [2024-05-12 13:32:25,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 233 transitions, 2740 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:32:25,475 INFO L231 Difference]: Finished difference. Result has 215 places, 189 transitions, 2234 flow [2024-05-12 13:32:25,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2234, PETRI_PLACES=215, PETRI_TRANSITIONS=189} [2024-05-12 13:32:25,478 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-05-12 13:32:25,478 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 189 transitions, 2234 flow [2024-05-12 13:32:25,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:25,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:25,479 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 13:32:25,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:32:25,479 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:25,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash 50306450, now seen corresponding path program 2 times [2024-05-12 13:32:25,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:25,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145344322] [2024-05-12 13:32:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:25,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:26,559 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 13:32:26,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:26,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145344322] [2024-05-12 13:32:26,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145344322] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:26,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:26,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:26,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904856967] [2024-05-12 13:32:26,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:26,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:26,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:26,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:26,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:26,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:26,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 189 transitions, 2234 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:26,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:26,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:26,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:27,404 INFO L124 PetriNetUnfolderBase]: 1661/4076 cut-off events. [2024-05-12 13:32:27,404 INFO L125 PetriNetUnfolderBase]: For 45240/45340 co-relation queries the response was YES. [2024-05-12 13:32:27,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16541 conditions, 4076 events. 1661/4076 cut-off events. For 45240/45340 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 36253 event pairs, 540 based on Foata normal form. 20/3803 useless extension candidates. Maximal degree in co-relation 16438. Up to 2568 conditions per place. [2024-05-12 13:32:27,446 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 185 selfloop transitions, 39 changer transitions 0/237 dead transitions. [2024-05-12 13:32:27,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 237 transitions, 2919 flow [2024-05-12 13:32:27,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-05-12 13:32:27,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047846889952153 [2024-05-12 13:32:27,448 INFO L175 Difference]: Start difference. First operand has 215 places, 189 transitions, 2234 flow. Second operand 11 states and 211 transitions. [2024-05-12 13:32:27,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 237 transitions, 2919 flow [2024-05-12 13:32:27,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 237 transitions, 2855 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-05-12 13:32:27,642 INFO L231 Difference]: Finished difference. Result has 225 places, 197 transitions, 2349 flow [2024-05-12 13:32:27,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2349, PETRI_PLACES=225, PETRI_TRANSITIONS=197} [2024-05-12 13:32:27,643 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 183 predicate places. [2024-05-12 13:32:27,643 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 197 transitions, 2349 flow [2024-05-12 13:32:27,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:27,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:27,644 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 13:32:27,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:32:27,644 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:27,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:27,644 INFO L85 PathProgramCache]: Analyzing trace with hash -665105898, now seen corresponding path program 3 times [2024-05-12 13:32:27,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:27,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150332051] [2024-05-12 13:32:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:27,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:28,814 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 13:32:28,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:28,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150332051] [2024-05-12 13:32:28,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150332051] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:28,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:28,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:28,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628605902] [2024-05-12 13:32:28,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:28,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:28,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:28,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:28,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:28,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:28,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 197 transitions, 2349 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:28,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:28,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:28,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:29,799 INFO L124 PetriNetUnfolderBase]: 1867/4641 cut-off events. [2024-05-12 13:32:29,799 INFO L125 PetriNetUnfolderBase]: For 48583/48717 co-relation queries the response was YES. [2024-05-12 13:32:29,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18614 conditions, 4641 events. 1867/4641 cut-off events. For 48583/48717 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 43061 event pairs, 624 based on Foata normal form. 24/4296 useless extension candidates. Maximal degree in co-relation 18507. Up to 2837 conditions per place. [2024-05-12 13:32:29,846 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 191 selfloop transitions, 44 changer transitions 0/248 dead transitions. [2024-05-12 13:32:29,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 248 transitions, 3113 flow [2024-05-12 13:32:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-05-12 13:32:29,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5095693779904307 [2024-05-12 13:32:29,848 INFO L175 Difference]: Start difference. First operand has 225 places, 197 transitions, 2349 flow. Second operand 11 states and 213 transitions. [2024-05-12 13:32:29,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 248 transitions, 3113 flow [2024-05-12 13:32:30,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 248 transitions, 3023 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:30,013 INFO L231 Difference]: Finished difference. Result has 232 places, 208 transitions, 2506 flow [2024-05-12 13:32:30,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2506, PETRI_PLACES=232, PETRI_TRANSITIONS=208} [2024-05-12 13:32:30,014 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 190 predicate places. [2024-05-12 13:32:30,014 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 208 transitions, 2506 flow [2024-05-12 13:32:30,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:30,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:30,015 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 13:32:30,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:32:30,015 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:30,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1388526304, now seen corresponding path program 4 times [2024-05-12 13:32:30,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:30,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264737395] [2024-05-12 13:32:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:30,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:31,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:31,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264737395] [2024-05-12 13:32:31,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264737395] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:31,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:31,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746524640] [2024-05-12 13:32:31,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:31,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:31,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:31,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:31,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:31,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:31,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 208 transitions, 2506 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:31,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:31,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:31,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:32,468 INFO L124 PetriNetUnfolderBase]: 1924/4801 cut-off events. [2024-05-12 13:32:32,468 INFO L125 PetriNetUnfolderBase]: For 47257/47380 co-relation queries the response was YES. [2024-05-12 13:32:32,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19545 conditions, 4801 events. 1924/4801 cut-off events. For 47257/47380 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 44974 event pairs, 896 based on Foata normal form. 20/4416 useless extension candidates. Maximal degree in co-relation 19435. Up to 3120 conditions per place. [2024-05-12 13:32:32,516 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 200 selfloop transitions, 41 changer transitions 0/254 dead transitions. [2024-05-12 13:32:32,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 254 transitions, 3328 flow [2024-05-12 13:32:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-05-12 13:32:32,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119617224880383 [2024-05-12 13:32:32,517 INFO L175 Difference]: Start difference. First operand has 232 places, 208 transitions, 2506 flow. Second operand 11 states and 214 transitions. [2024-05-12 13:32:32,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 254 transitions, 3328 flow [2024-05-12 13:32:32,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 254 transitions, 3294 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:32:32,732 INFO L231 Difference]: Finished difference. Result has 240 places, 212 transitions, 2626 flow [2024-05-12 13:32:32,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2472, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2626, PETRI_PLACES=240, PETRI_TRANSITIONS=212} [2024-05-12 13:32:32,732 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 198 predicate places. [2024-05-12 13:32:32,732 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 212 transitions, 2626 flow [2024-05-12 13:32:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:32,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:32,733 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 13:32:32,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:32:32,733 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:32,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:32,733 INFO L85 PathProgramCache]: Analyzing trace with hash 883141744, now seen corresponding path program 5 times [2024-05-12 13:32:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:32,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584008716] [2024-05-12 13:32:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:32,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:33,883 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 13:32:33,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:33,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584008716] [2024-05-12 13:32:33,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584008716] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:33,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:33,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:33,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243036077] [2024-05-12 13:32:33,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:33,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:33,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:34,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:34,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 212 transitions, 2626 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:34,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:34,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:34,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:35,020 INFO L124 PetriNetUnfolderBase]: 2063/5227 cut-off events. [2024-05-12 13:32:35,020 INFO L125 PetriNetUnfolderBase]: For 62090/62231 co-relation queries the response was YES. [2024-05-12 13:32:35,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20970 conditions, 5227 events. 2063/5227 cut-off events. For 62090/62231 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 50356 event pairs, 960 based on Foata normal form. 27/4818 useless extension candidates. Maximal degree in co-relation 20858. Up to 3078 conditions per place. [2024-05-12 13:32:35,073 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 204 selfloop transitions, 40 changer transitions 0/257 dead transitions. [2024-05-12 13:32:35,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 257 transitions, 3420 flow [2024-05-12 13:32:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:35,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-05-12 13:32:35,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143540669856459 [2024-05-12 13:32:35,074 INFO L175 Difference]: Start difference. First operand has 240 places, 212 transitions, 2626 flow. Second operand 11 states and 215 transitions. [2024-05-12 13:32:35,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 257 transitions, 3420 flow [2024-05-12 13:32:35,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 257 transitions, 3352 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-05-12 13:32:35,352 INFO L231 Difference]: Finished difference. Result has 246 places, 213 transitions, 2666 flow [2024-05-12 13:32:35,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2558, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2666, PETRI_PLACES=246, PETRI_TRANSITIONS=213} [2024-05-12 13:32:35,353 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2024-05-12 13:32:35,353 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 213 transitions, 2666 flow [2024-05-12 13:32:35,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:35,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:35,353 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 13:32:35,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:32:35,354 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:35,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:35,354 INFO L85 PathProgramCache]: Analyzing trace with hash -987836750, now seen corresponding path program 6 times [2024-05-12 13:32:35,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:35,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057864389] [2024-05-12 13:32:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:36,732 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 13:32:36,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:36,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057864389] [2024-05-12 13:32:36,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057864389] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:36,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:36,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:36,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065959604] [2024-05-12 13:32:36,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:36,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:36,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:36,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:36,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:36,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:36,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 213 transitions, 2666 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:36,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:36,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:36,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:38,230 INFO L124 PetriNetUnfolderBase]: 2345/6052 cut-off events. [2024-05-12 13:32:38,230 INFO L125 PetriNetUnfolderBase]: For 74850/75017 co-relation queries the response was YES. [2024-05-12 13:32:38,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23648 conditions, 6052 events. 2345/6052 cut-off events. For 74850/75017 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 60973 event pairs, 1099 based on Foata normal form. 30/5567 useless extension candidates. Maximal degree in co-relation 23533. Up to 3378 conditions per place. [2024-05-12 13:32:38,295 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 204 selfloop transitions, 42 changer transitions 0/259 dead transitions. [2024-05-12 13:32:38,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 259 transitions, 3527 flow [2024-05-12 13:32:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-05-12 13:32:38,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143540669856459 [2024-05-12 13:32:38,297 INFO L175 Difference]: Start difference. First operand has 246 places, 213 transitions, 2666 flow. Second operand 11 states and 215 transitions. [2024-05-12 13:32:38,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 259 transitions, 3527 flow [2024-05-12 13:32:38,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 259 transitions, 3459 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:38,581 INFO L231 Difference]: Finished difference. Result has 250 places, 218 transitions, 2786 flow [2024-05-12 13:32:38,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2786, PETRI_PLACES=250, PETRI_TRANSITIONS=218} [2024-05-12 13:32:38,582 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-05-12 13:32:38,582 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 218 transitions, 2786 flow [2024-05-12 13:32:38,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:38,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:38,582 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 13:32:38,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:32:38,583 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:38,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash -987844190, now seen corresponding path program 7 times [2024-05-12 13:32:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:38,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010620366] [2024-05-12 13:32:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:38,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:39,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:39,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010620366] [2024-05-12 13:32:39,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010620366] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:39,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:39,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416203600] [2024-05-12 13:32:39,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:39,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:39,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:40,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:40,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 218 transitions, 2786 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:40,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:40,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:40,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:41,358 INFO L124 PetriNetUnfolderBase]: 2344/6057 cut-off events. [2024-05-12 13:32:41,358 INFO L125 PetriNetUnfolderBase]: For 68041/68210 co-relation queries the response was YES. [2024-05-12 13:32:41,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23884 conditions, 6057 events. 2344/6057 cut-off events. For 68041/68210 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 60973 event pairs, 1114 based on Foata normal form. 26/5559 useless extension candidates. Maximal degree in co-relation 23767. Up to 3378 conditions per place. [2024-05-12 13:32:41,414 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 202 selfloop transitions, 44 changer transitions 0/259 dead transitions. [2024-05-12 13:32:41,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 259 transitions, 3577 flow [2024-05-12 13:32:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-05-12 13:32:41,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167464114832536 [2024-05-12 13:32:41,416 INFO L175 Difference]: Start difference. First operand has 250 places, 218 transitions, 2786 flow. Second operand 11 states and 216 transitions. [2024-05-12 13:32:41,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 259 transitions, 3577 flow [2024-05-12 13:32:41,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 259 transitions, 3501 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:41,720 INFO L231 Difference]: Finished difference. Result has 253 places, 220 transitions, 2830 flow [2024-05-12 13:32:41,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2710, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2830, PETRI_PLACES=253, PETRI_TRANSITIONS=220} [2024-05-12 13:32:41,721 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-05-12 13:32:41,721 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 220 transitions, 2830 flow [2024-05-12 13:32:41,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:41,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:41,722 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 13:32:41,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:32:41,722 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:41,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:41,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1642389794, now seen corresponding path program 8 times [2024-05-12 13:32:41,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:41,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64090220] [2024-05-12 13:32:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:41,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:42,936 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 13:32:42,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64090220] [2024-05-12 13:32:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64090220] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:42,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:42,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239647919] [2024-05-12 13:32:42,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:42,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:42,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:42,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:42,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:43,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:43,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 220 transitions, 2830 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:43,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:43,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:43,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:44,437 INFO L124 PetriNetUnfolderBase]: 2453/6421 cut-off events. [2024-05-12 13:32:44,437 INFO L125 PetriNetUnfolderBase]: For 90188/90355 co-relation queries the response was YES. [2024-05-12 13:32:44,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25447 conditions, 6421 events. 2453/6421 cut-off events. For 90188/90355 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 65781 event pairs, 1236 based on Foata normal form. 30/5882 useless extension candidates. Maximal degree in co-relation 25329. Up to 3840 conditions per place. [2024-05-12 13:32:44,512 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 216 selfloop transitions, 38 changer transitions 0/267 dead transitions. [2024-05-12 13:32:44,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 267 transitions, 3682 flow [2024-05-12 13:32:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-05-12 13:32:44,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239234449760766 [2024-05-12 13:32:44,513 INFO L175 Difference]: Start difference. First operand has 253 places, 220 transitions, 2830 flow. Second operand 11 states and 219 transitions. [2024-05-12 13:32:44,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 267 transitions, 3682 flow [2024-05-12 13:32:44,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 267 transitions, 3601 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-05-12 13:32:44,834 INFO L231 Difference]: Finished difference. Result has 256 places, 221 transitions, 2850 flow [2024-05-12 13:32:44,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2850, PETRI_PLACES=256, PETRI_TRANSITIONS=221} [2024-05-12 13:32:44,835 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2024-05-12 13:32:44,835 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 221 transitions, 2850 flow [2024-05-12 13:32:44,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:44,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:44,835 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 13:32:44,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:32:44,836 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:44,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:44,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1642382354, now seen corresponding path program 9 times [2024-05-12 13:32:44,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:44,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534183841] [2024-05-12 13:32:44,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:46,773 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 13:32:46,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:46,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534183841] [2024-05-12 13:32:46,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534183841] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:46,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:46,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:46,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133791071] [2024-05-12 13:32:46,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:46,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:46,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:46,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:46,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:46,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 221 transitions, 2850 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:46,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:46,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:46,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:48,382 INFO L124 PetriNetUnfolderBase]: 2450/6442 cut-off events. [2024-05-12 13:32:48,383 INFO L125 PetriNetUnfolderBase]: For 83145/83312 co-relation queries the response was YES. [2024-05-12 13:32:48,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25532 conditions, 6442 events. 2450/6442 cut-off events. For 83145/83312 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 66138 event pairs, 1287 based on Foata normal form. 25/5873 useless extension candidates. Maximal degree in co-relation 25413. Up to 4135 conditions per place. [2024-05-12 13:32:48,449 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 212 selfloop transitions, 39 changer transitions 0/264 dead transitions. [2024-05-12 13:32:48,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 264 transitions, 3566 flow [2024-05-12 13:32:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-05-12 13:32:48,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191387559808612 [2024-05-12 13:32:48,452 INFO L175 Difference]: Start difference. First operand has 256 places, 221 transitions, 2850 flow. Second operand 11 states and 217 transitions. [2024-05-12 13:32:48,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 264 transitions, 3566 flow [2024-05-12 13:32:48,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 264 transitions, 3477 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-05-12 13:32:48,767 INFO L231 Difference]: Finished difference. Result has 258 places, 222 transitions, 2865 flow [2024-05-12 13:32:48,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2865, PETRI_PLACES=258, PETRI_TRANSITIONS=222} [2024-05-12 13:32:48,768 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-05-12 13:32:48,768 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 222 transitions, 2865 flow [2024-05-12 13:32:48,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:48,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:48,769 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 13:32:48,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:32:48,769 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:48,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:48,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1649539634, now seen corresponding path program 10 times [2024-05-12 13:32:48,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:48,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728821563] [2024-05-12 13:32:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:48,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:49,997 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 13:32:49,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728821563] [2024-05-12 13:32:49,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728821563] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:49,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:49,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:49,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384655212] [2024-05-12 13:32:49,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:49,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:49,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:49,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:49,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:50,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:50,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 222 transitions, 2865 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:50,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:50,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:50,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:51,534 INFO L124 PetriNetUnfolderBase]: 2677/7092 cut-off events. [2024-05-12 13:32:51,534 INFO L125 PetriNetUnfolderBase]: For 121045/121225 co-relation queries the response was YES. [2024-05-12 13:32:51,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28659 conditions, 7092 events. 2677/7092 cut-off events. For 121045/121225 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 74285 event pairs, 1433 based on Foata normal form. 30/6498 useless extension candidates. Maximal degree in co-relation 28539. Up to 2543 conditions per place. [2024-05-12 13:32:51,623 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 223 selfloop transitions, 40 changer transitions 0/276 dead transitions. [2024-05-12 13:32:51,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 276 transitions, 4041 flow [2024-05-12 13:32:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2024-05-12 13:32:51,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5406698564593302 [2024-05-12 13:32:51,625 INFO L175 Difference]: Start difference. First operand has 258 places, 222 transitions, 2865 flow. Second operand 11 states and 226 transitions. [2024-05-12 13:32:51,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 276 transitions, 4041 flow [2024-05-12 13:32:52,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 276 transitions, 3955 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:52,007 INFO L231 Difference]: Finished difference. Result has 264 places, 225 transitions, 2927 flow [2024-05-12 13:32:52,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2927, PETRI_PLACES=264, PETRI_TRANSITIONS=225} [2024-05-12 13:32:52,008 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-05-12 13:32:52,008 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 225 transitions, 2927 flow [2024-05-12 13:32:52,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:52,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:52,008 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 13:32:52,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:32:52,009 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:52,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1649532194, now seen corresponding path program 11 times [2024-05-12 13:32:52,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:52,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749775298] [2024-05-12 13:32:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:52,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:53,363 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 13:32:53,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:53,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749775298] [2024-05-12 13:32:53,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749775298] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:53,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:53,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:53,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30594614] [2024-05-12 13:32:53,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:53,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:53,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:53,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:53,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:53,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:53,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 225 transitions, 2927 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:53,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:53,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:53,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:55,083 INFO L124 PetriNetUnfolderBase]: 2695/7114 cut-off events. [2024-05-12 13:32:55,083 INFO L125 PetriNetUnfolderBase]: For 114966/115157 co-relation queries the response was YES. [2024-05-12 13:32:55,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28729 conditions, 7114 events. 2695/7114 cut-off events. For 114966/115157 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 74416 event pairs, 1394 based on Foata normal form. 27/6466 useless extension candidates. Maximal degree in co-relation 28606. Up to 4004 conditions per place. [2024-05-12 13:32:55,150 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 197 selfloop transitions, 55 changer transitions 0/265 dead transitions. [2024-05-12 13:32:55,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 265 transitions, 3767 flow [2024-05-12 13:32:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-05-12 13:32:55,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167464114832536 [2024-05-12 13:32:55,151 INFO L175 Difference]: Start difference. First operand has 264 places, 225 transitions, 2927 flow. Second operand 11 states and 216 transitions. [2024-05-12 13:32:55,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 265 transitions, 3767 flow [2024-05-12 13:32:55,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 265 transitions, 3685 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-05-12 13:32:55,570 INFO L231 Difference]: Finished difference. Result has 268 places, 227 transitions, 3009 flow [2024-05-12 13:32:55,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3009, PETRI_PLACES=268, PETRI_TRANSITIONS=227} [2024-05-12 13:32:55,571 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-05-12 13:32:55,571 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 227 transitions, 3009 flow [2024-05-12 13:32:55,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:55,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:55,571 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 13:32:55,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:32:55,572 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:55,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1649808683, now seen corresponding path program 1 times [2024-05-12 13:32:55,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:55,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058990761] [2024-05-12 13:32:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:55,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:56,700 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 13:32:56,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058990761] [2024-05-12 13:32:56,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058990761] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:56,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:56,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:32:56,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740277375] [2024-05-12 13:32:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:56,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:32:56,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:56,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:32:56,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:32:56,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:32:56,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 227 transitions, 3009 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:56,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:56,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:32:56,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:58,153 INFO L124 PetriNetUnfolderBase]: 2620/6792 cut-off events. [2024-05-12 13:32:58,154 INFO L125 PetriNetUnfolderBase]: For 110876/111058 co-relation queries the response was YES. [2024-05-12 13:32:58,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28463 conditions, 6792 events. 2620/6792 cut-off events. For 110876/111058 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 70116 event pairs, 1185 based on Foata normal form. 26/6223 useless extension candidates. Maximal degree in co-relation 28339. Up to 3835 conditions per place. [2024-05-12 13:32:58,224 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 192 selfloop transitions, 67 changer transitions 0/272 dead transitions. [2024-05-12 13:32:58,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 272 transitions, 3887 flow [2024-05-12 13:32:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:32:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:32:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-05-12 13:32:58,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:32:58,226 INFO L175 Difference]: Start difference. First operand has 268 places, 227 transitions, 3009 flow. Second operand 11 states and 220 transitions. [2024-05-12 13:32:58,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 272 transitions, 3887 flow [2024-05-12 13:32:58,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 272 transitions, 3804 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-05-12 13:32:58,632 INFO L231 Difference]: Finished difference. Result has 273 places, 229 transitions, 3118 flow [2024-05-12 13:32:58,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3118, PETRI_PLACES=273, PETRI_TRANSITIONS=229} [2024-05-12 13:32:58,633 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2024-05-12 13:32:58,633 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 229 transitions, 3118 flow [2024-05-12 13:32:58,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:32:58,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:58,634 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 13:32:58,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:32:58,634 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:58,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:58,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1649799383, now seen corresponding path program 2 times [2024-05-12 13:32:58,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:58,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878981464] [2024-05-12 13:32:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:00,132 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 13:33:00,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:00,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878981464] [2024-05-12 13:33:00,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878981464] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:00,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:00,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:00,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117188951] [2024-05-12 13:33:00,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:00,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:00,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:00,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:00,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:00,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:00,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 229 transitions, 3118 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:00,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:00,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:00,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:01,583 INFO L124 PetriNetUnfolderBase]: 2660/6932 cut-off events. [2024-05-12 13:33:01,583 INFO L125 PetriNetUnfolderBase]: For 107864/108050 co-relation queries the response was YES. [2024-05-12 13:33:01,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28651 conditions, 6932 events. 2660/6932 cut-off events. For 107864/108050 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 71880 event pairs, 1341 based on Foata normal form. 28/6317 useless extension candidates. Maximal degree in co-relation 28525. Up to 4295 conditions per place. [2024-05-12 13:33:01,672 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 192 selfloop transitions, 61 changer transitions 0/266 dead transitions. [2024-05-12 13:33:01,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 266 transitions, 3796 flow [2024-05-12 13:33:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:33:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:33:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-05-12 13:33:01,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119617224880383 [2024-05-12 13:33:01,674 INFO L175 Difference]: Start difference. First operand has 273 places, 229 transitions, 3118 flow. Second operand 11 states and 214 transitions. [2024-05-12 13:33:01,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 266 transitions, 3796 flow [2024-05-12 13:33:02,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 266 transitions, 3650 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-05-12 13:33:02,147 INFO L231 Difference]: Finished difference. Result has 277 places, 229 transitions, 3098 flow [2024-05-12 13:33:02,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3098, PETRI_PLACES=277, PETRI_TRANSITIONS=229} [2024-05-12 13:33:02,148 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-05-12 13:33:02,148 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 229 transitions, 3098 flow [2024-05-12 13:33:02,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:02,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:02,148 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 13:33:02,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:33:02,149 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:02,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:02,149 INFO L85 PathProgramCache]: Analyzing trace with hash 734717616, now seen corresponding path program 12 times [2024-05-12 13:33:02,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:02,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083564277] [2024-05-12 13:33:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:02,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:03,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083564277] [2024-05-12 13:33:03,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083564277] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:03,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:03,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:03,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004148944] [2024-05-12 13:33:03,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:03,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:03,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:03,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:03,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:03,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:03,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 229 transitions, 3098 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:03,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:03,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:03,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:04,843 INFO L124 PetriNetUnfolderBase]: 2716/7206 cut-off events. [2024-05-12 13:33:04,843 INFO L125 PetriNetUnfolderBase]: For 124750/124945 co-relation queries the response was YES. [2024-05-12 13:33:04,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29174 conditions, 7206 events. 2716/7206 cut-off events. For 124750/124945 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 75826 event pairs, 1214 based on Foata normal form. 34/6637 useless extension candidates. Maximal degree in co-relation 29046. Up to 2543 conditions per place. [2024-05-12 13:33:05,091 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 209 selfloop transitions, 53 changer transitions 0/275 dead transitions. [2024-05-12 13:33:05,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 275 transitions, 4060 flow [2024-05-12 13:33:05,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:33:05,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:33:05,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-05-12 13:33:05,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5334928229665071 [2024-05-12 13:33:05,094 INFO L175 Difference]: Start difference. First operand has 277 places, 229 transitions, 3098 flow. Second operand 11 states and 223 transitions. [2024-05-12 13:33:05,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 275 transitions, 4060 flow [2024-05-12 13:33:05,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 275 transitions, 3941 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 13:33:05,582 INFO L231 Difference]: Finished difference. Result has 280 places, 229 transitions, 3091 flow [2024-05-12 13:33:05,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2979, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3091, PETRI_PLACES=280, PETRI_TRANSITIONS=229} [2024-05-12 13:33:05,583 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-05-12 13:33:05,583 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 229 transitions, 3091 flow [2024-05-12 13:33:05,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:05,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:05,583 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 13:33:05,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:33:05,584 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:05,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:05,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1172242394, now seen corresponding path program 13 times [2024-05-12 13:33:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610170251] [2024-05-12 13:33:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:06,692 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 13:33:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610170251] [2024-05-12 13:33:06,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610170251] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:06,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:06,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:06,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52850960] [2024-05-12 13:33:06,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:06,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:06,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:06,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:06,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:06,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:06,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 229 transitions, 3091 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:06,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:06,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:06,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:08,315 INFO L124 PetriNetUnfolderBase]: 2784/7270 cut-off events. [2024-05-12 13:33:08,315 INFO L125 PetriNetUnfolderBase]: For 126871/127068 co-relation queries the response was YES. [2024-05-12 13:33:08,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29740 conditions, 7270 events. 2784/7270 cut-off events. For 126871/127068 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 76487 event pairs, 1208 based on Foata normal form. 32/6685 useless extension candidates. Maximal degree in co-relation 29611. Up to 3947 conditions per place. [2024-05-12 13:33:08,402 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 202 selfloop transitions, 50 changer transitions 0/265 dead transitions. [2024-05-12 13:33:08,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 265 transitions, 3779 flow [2024-05-12 13:33:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-05-12 13:33:08,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-05-12 13:33:08,404 INFO L175 Difference]: Start difference. First operand has 280 places, 229 transitions, 3091 flow. Second operand 10 states and 192 transitions. [2024-05-12 13:33:08,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 265 transitions, 3779 flow [2024-05-12 13:33:08,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 265 transitions, 3692 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 13:33:08,948 INFO L231 Difference]: Finished difference. Result has 282 places, 229 transitions, 3113 flow [2024-05-12 13:33:08,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3004, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3113, PETRI_PLACES=282, PETRI_TRANSITIONS=229} [2024-05-12 13:33:08,948 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-05-12 13:33:08,948 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 229 transitions, 3113 flow [2024-05-12 13:33:08,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:08,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:08,949 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 13:33:08,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:33:08,949 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:08,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:08,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1735729670, now seen corresponding path program 14 times [2024-05-12 13:33:08,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:08,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921582533] [2024-05-12 13:33:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:08,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:10,217 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 13:33:10,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921582533] [2024-05-12 13:33:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921582533] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:10,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:10,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61260815] [2024-05-12 13:33:10,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:10,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:10,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:10,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:10,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 229 transitions, 3113 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:10,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:10,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:10,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:11,852 INFO L124 PetriNetUnfolderBase]: 2877/7512 cut-off events. [2024-05-12 13:33:11,852 INFO L125 PetriNetUnfolderBase]: For 136017/136206 co-relation queries the response was YES. [2024-05-12 13:33:11,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31134 conditions, 7512 events. 2877/7512 cut-off events. For 136017/136206 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 79325 event pairs, 1321 based on Foata normal form. 29/6918 useless extension candidates. Maximal degree in co-relation 31004. Up to 3367 conditions per place. [2024-05-12 13:33:11,936 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 201 selfloop transitions, 59 changer transitions 0/273 dead transitions. [2024-05-12 13:33:11,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 273 transitions, 4120 flow [2024-05-12 13:33:11,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-05-12 13:33:11,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:33:11,938 INFO L175 Difference]: Start difference. First operand has 282 places, 229 transitions, 3113 flow. Second operand 10 states and 200 transitions. [2024-05-12 13:33:11,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 273 transitions, 4120 flow [2024-05-12 13:33:12,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 273 transitions, 4009 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-05-12 13:33:12,573 INFO L231 Difference]: Finished difference. Result has 282 places, 231 transitions, 3190 flow [2024-05-12 13:33:12,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3010, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3190, PETRI_PLACES=282, PETRI_TRANSITIONS=231} [2024-05-12 13:33:12,574 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-05-12 13:33:12,574 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 231 transitions, 3190 flow [2024-05-12 13:33:12,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:12,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:12,574 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 13:33:12,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:33:12,575 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:12,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1735737110, now seen corresponding path program 15 times [2024-05-12 13:33:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:12,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037632367] [2024-05-12 13:33:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:13,869 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 13:33:13,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037632367] [2024-05-12 13:33:13,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037632367] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:13,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:13,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:13,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402935269] [2024-05-12 13:33:13,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:13,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:13,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:13,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:13,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:14,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:14,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 231 transitions, 3190 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:14,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:14,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:14,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:15,579 INFO L124 PetriNetUnfolderBase]: 2866/7597 cut-off events. [2024-05-12 13:33:15,580 INFO L125 PetriNetUnfolderBase]: For 132122/132308 co-relation queries the response was YES. [2024-05-12 13:33:15,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31329 conditions, 7597 events. 2866/7597 cut-off events. For 132122/132308 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 80890 event pairs, 1467 based on Foata normal form. 31/6928 useless extension candidates. Maximal degree in co-relation 31200. Up to 4450 conditions per place. [2024-05-12 13:33:15,664 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 198 selfloop transitions, 58 changer transitions 0/269 dead transitions. [2024-05-12 13:33:15,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 269 transitions, 3885 flow [2024-05-12 13:33:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-05-12 13:33:15,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-05-12 13:33:15,665 INFO L175 Difference]: Start difference. First operand has 282 places, 231 transitions, 3190 flow. Second operand 10 states and 195 transitions. [2024-05-12 13:33:15,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 269 transitions, 3885 flow [2024-05-12 13:33:16,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 269 transitions, 3784 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-05-12 13:33:16,265 INFO L231 Difference]: Finished difference. Result has 286 places, 232 transitions, 3251 flow [2024-05-12 13:33:16,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3089, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3251, PETRI_PLACES=286, PETRI_TRANSITIONS=232} [2024-05-12 13:33:16,266 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 244 predicate places. [2024-05-12 13:33:16,266 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 232 transitions, 3251 flow [2024-05-12 13:33:16,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:16,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:16,266 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 13:33:16,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:33:16,267 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:16,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:16,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1929082153, now seen corresponding path program 3 times [2024-05-12 13:33:16,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:16,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345602731] [2024-05-12 13:33:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:16,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:17,459 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 13:33:17,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:17,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345602731] [2024-05-12 13:33:17,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345602731] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:17,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:17,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:17,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027910125] [2024-05-12 13:33:17,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:17,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:17,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:17,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:17,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:17,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:17,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 232 transitions, 3251 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:17,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:17,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:17,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:19,140 INFO L124 PetriNetUnfolderBase]: 2837/7542 cut-off events. [2024-05-12 13:33:19,140 INFO L125 PetriNetUnfolderBase]: For 129929/130120 co-relation queries the response was YES. [2024-05-12 13:33:19,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31033 conditions, 7542 events. 2837/7542 cut-off events. For 129929/130120 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 80213 event pairs, 1481 based on Foata normal form. 32/6886 useless extension candidates. Maximal degree in co-relation 30902. Up to 4609 conditions per place. [2024-05-12 13:33:19,220 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 216 selfloop transitions, 43 changer transitions 0/272 dead transitions. [2024-05-12 13:33:19,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 272 transitions, 3953 flow [2024-05-12 13:33:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-05-12 13:33:19,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236842105263158 [2024-05-12 13:33:19,221 INFO L175 Difference]: Start difference. First operand has 286 places, 232 transitions, 3251 flow. Second operand 10 states and 199 transitions. [2024-05-12 13:33:19,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 272 transitions, 3953 flow [2024-05-12 13:33:19,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 272 transitions, 3814 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-05-12 13:33:19,724 INFO L231 Difference]: Finished difference. Result has 288 places, 232 transitions, 3204 flow [2024-05-12 13:33:19,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3204, PETRI_PLACES=288, PETRI_TRANSITIONS=232} [2024-05-12 13:33:19,724 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-05-12 13:33:19,725 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 232 transitions, 3204 flow [2024-05-12 13:33:19,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:19,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:19,725 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 13:33:19,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:33:19,725 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:19,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:19,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1929081874, now seen corresponding path program 16 times [2024-05-12 13:33:19,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:19,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228638327] [2024-05-12 13:33:19,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:19,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:21,020 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 13:33:21,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:21,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228638327] [2024-05-12 13:33:21,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228638327] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:21,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:21,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:21,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535417294] [2024-05-12 13:33:21,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:21,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:21,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:21,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:21,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:21,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 232 transitions, 3204 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:21,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:21,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:21,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:22,923 INFO L124 PetriNetUnfolderBase]: 3092/8337 cut-off events. [2024-05-12 13:33:22,924 INFO L125 PetriNetUnfolderBase]: For 137561/137765 co-relation queries the response was YES. [2024-05-12 13:33:22,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33421 conditions, 8337 events. 3092/8337 cut-off events. For 137561/137765 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 91157 event pairs, 1670 based on Foata normal form. 35/7581 useless extension candidates. Maximal degree in co-relation 33289. Up to 4747 conditions per place. [2024-05-12 13:33:23,019 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 237 selfloop transitions, 44 changer transitions 0/294 dead transitions. [2024-05-12 13:33:23,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 294 transitions, 4361 flow [2024-05-12 13:33:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:33:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:33:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 234 transitions. [2024-05-12 13:33:23,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-05-12 13:33:23,020 INFO L175 Difference]: Start difference. First operand has 288 places, 232 transitions, 3204 flow. Second operand 12 states and 234 transitions. [2024-05-12 13:33:23,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 294 transitions, 4361 flow [2024-05-12 13:33:23,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 294 transitions, 4178 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-05-12 13:33:23,542 INFO L231 Difference]: Finished difference. Result has 294 places, 243 transitions, 3369 flow [2024-05-12 13:33:23,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3369, PETRI_PLACES=294, PETRI_TRANSITIONS=243} [2024-05-12 13:33:23,543 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-05-12 13:33:23,543 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 243 transitions, 3369 flow [2024-05-12 13:33:23,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:23,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:23,543 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 13:33:23,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 13:33:23,544 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:23,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:23,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1929074434, now seen corresponding path program 17 times [2024-05-12 13:33:23,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:23,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042529910] [2024-05-12 13:33:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:23,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:24,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:24,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042529910] [2024-05-12 13:33:24,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042529910] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:24,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:24,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:24,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158983212] [2024-05-12 13:33:24,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:24,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:24,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:24,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:24,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:24,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 243 transitions, 3369 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:24,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:24,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:24,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:26,743 INFO L124 PetriNetUnfolderBase]: 3095/8219 cut-off events. [2024-05-12 13:33:26,743 INFO L125 PetriNetUnfolderBase]: For 128618/128828 co-relation queries the response was YES. [2024-05-12 13:33:26,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33515 conditions, 8219 events. 3095/8219 cut-off events. For 128618/128828 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 89256 event pairs, 1531 based on Foata normal form. 33/7525 useless extension candidates. Maximal degree in co-relation 33379. Up to 4232 conditions per place. [2024-05-12 13:33:26,839 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 220 selfloop transitions, 53 changer transitions 0/286 dead transitions. [2024-05-12 13:33:26,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 286 transitions, 4271 flow [2024-05-12 13:33:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-05-12 13:33:26,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531578947368421 [2024-05-12 13:33:26,840 INFO L175 Difference]: Start difference. First operand has 294 places, 243 transitions, 3369 flow. Second operand 10 states and 202 transitions. [2024-05-12 13:33:26,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 286 transitions, 4271 flow [2024-05-12 13:33:27,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 286 transitions, 4188 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-05-12 13:33:27,435 INFO L231 Difference]: Finished difference. Result has 298 places, 244 transitions, 3429 flow [2024-05-12 13:33:27,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3286, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3429, PETRI_PLACES=298, PETRI_TRANSITIONS=244} [2024-05-12 13:33:27,436 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-05-12 13:33:27,436 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 244 transitions, 3429 flow [2024-05-12 13:33:27,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:27,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:27,436 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 13:33:27,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 13:33:27,437 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:27,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:27,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1489123708, now seen corresponding path program 18 times [2024-05-12 13:33:27,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:27,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642109600] [2024-05-12 13:33:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:27,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:28,659 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 13:33:28,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:28,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642109600] [2024-05-12 13:33:28,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642109600] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:28,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:28,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:28,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745051572] [2024-05-12 13:33:28,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:28,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:28,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:28,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:28,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 244 transitions, 3429 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:28,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:28,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:28,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:30,591 INFO L124 PetriNetUnfolderBase]: 3209/8686 cut-off events. [2024-05-12 13:33:30,592 INFO L125 PetriNetUnfolderBase]: For 160865/161073 co-relation queries the response was YES. [2024-05-12 13:33:30,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35886 conditions, 8686 events. 3209/8686 cut-off events. For 160865/161073 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 95873 event pairs, 1740 based on Foata normal form. 32/7947 useless extension candidates. Maximal degree in co-relation 35749. Up to 2793 conditions per place. [2024-05-12 13:33:30,710 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 219 selfloop transitions, 58 changer transitions 0/290 dead transitions. [2024-05-12 13:33:30,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 290 transitions, 4629 flow [2024-05-12 13:33:30,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 207 transitions. [2024-05-12 13:33:30,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5447368421052632 [2024-05-12 13:33:30,711 INFO L175 Difference]: Start difference. First operand has 298 places, 244 transitions, 3429 flow. Second operand 10 states and 207 transitions. [2024-05-12 13:33:30,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 290 transitions, 4629 flow [2024-05-12 13:33:31,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 290 transitions, 4492 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-05-12 13:33:31,415 INFO L231 Difference]: Finished difference. Result has 300 places, 246 transitions, 3482 flow [2024-05-12 13:33:31,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3482, PETRI_PLACES=300, PETRI_TRANSITIONS=246} [2024-05-12 13:33:31,416 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 258 predicate places. [2024-05-12 13:33:31,416 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 246 transitions, 3482 flow [2024-05-12 13:33:31,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:31,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:31,416 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 13:33:31,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 13:33:31,416 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:31,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:31,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1489131148, now seen corresponding path program 19 times [2024-05-12 13:33:31,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:31,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128360811] [2024-05-12 13:33:31,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:31,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:32,619 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 13:33:32,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:32,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128360811] [2024-05-12 13:33:32,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128360811] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:32,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:32,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:32,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607091703] [2024-05-12 13:33:32,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:32,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:32,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:32,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:32,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:32,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:32,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 246 transitions, 3482 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:32,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:32,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:32,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:34,505 INFO L124 PetriNetUnfolderBase]: 3320/8959 cut-off events. [2024-05-12 13:33:34,506 INFO L125 PetriNetUnfolderBase]: For 179926/180149 co-relation queries the response was YES. [2024-05-12 13:33:34,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36978 conditions, 8959 events. 3320/8959 cut-off events. For 179926/180149 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 99520 event pairs, 1805 based on Foata normal form. 41/8218 useless extension candidates. Maximal degree in co-relation 36840. Up to 2793 conditions per place. [2024-05-12 13:33:34,626 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 229 selfloop transitions, 50 changer transitions 0/292 dead transitions. [2024-05-12 13:33:34,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 292 transitions, 4658 flow [2024-05-12 13:33:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-05-12 13:33:34,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2024-05-12 13:33:34,637 INFO L175 Difference]: Start difference. First operand has 300 places, 246 transitions, 3482 flow. Second operand 10 states and 208 transitions. [2024-05-12 13:33:34,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 292 transitions, 4658 flow [2024-05-12 13:33:35,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 292 transitions, 4460 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-05-12 13:33:35,472 INFO L231 Difference]: Finished difference. Result has 300 places, 247 transitions, 3430 flow [2024-05-12 13:33:35,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3430, PETRI_PLACES=300, PETRI_TRANSITIONS=247} [2024-05-12 13:33:35,472 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 258 predicate places. [2024-05-12 13:33:35,472 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 247 transitions, 3430 flow [2024-05-12 13:33:35,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:35,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:35,473 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 13:33:35,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 13:33:35,473 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:35,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1489400197, now seen corresponding path program 4 times [2024-05-12 13:33:35,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:35,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069492495] [2024-05-12 13:33:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:35,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:36,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:36,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069492495] [2024-05-12 13:33:36,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069492495] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:36,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:36,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715163043] [2024-05-12 13:33:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:36,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:36,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:36,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:36,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 247 transitions, 3430 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:36,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:36,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:36,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:38,560 INFO L124 PetriNetUnfolderBase]: 3266/8817 cut-off events. [2024-05-12 13:33:38,560 INFO L125 PetriNetUnfolderBase]: For 164980/165200 co-relation queries the response was YES. [2024-05-12 13:33:38,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36153 conditions, 8817 events. 3266/8817 cut-off events. For 164980/165200 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 97733 event pairs, 1528 based on Foata normal form. 38/8039 useless extension candidates. Maximal degree in co-relation 36017. Up to 4425 conditions per place. [2024-05-12 13:33:38,668 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 181 selfloop transitions, 94 changer transitions 0/288 dead transitions. [2024-05-12 13:33:38,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 288 transitions, 4331 flow [2024-05-12 13:33:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-05-12 13:33:38,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531578947368421 [2024-05-12 13:33:38,674 INFO L175 Difference]: Start difference. First operand has 300 places, 247 transitions, 3430 flow. Second operand 10 states and 202 transitions. [2024-05-12 13:33:38,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 288 transitions, 4331 flow [2024-05-12 13:33:39,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 288 transitions, 4221 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 13:33:39,430 INFO L231 Difference]: Finished difference. Result has 302 places, 248 transitions, 3543 flow [2024-05-12 13:33:39,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3320, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3543, PETRI_PLACES=302, PETRI_TRANSITIONS=248} [2024-05-12 13:33:39,431 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 260 predicate places. [2024-05-12 13:33:39,431 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 248 transitions, 3543 flow [2024-05-12 13:33:39,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:39,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:39,432 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 13:33:39,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 13:33:39,432 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:39,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:39,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1936491463, now seen corresponding path program 5 times [2024-05-12 13:33:39,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:39,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485180985] [2024-05-12 13:33:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:39,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:40,443 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 13:33:40,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:40,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485180985] [2024-05-12 13:33:40,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485180985] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:40,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:40,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:33:40,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350217333] [2024-05-12 13:33:40,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:40,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:33:40,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:40,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:33:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:33:40,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:40,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 248 transitions, 3543 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:40,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:40,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:40,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:42,098 INFO L124 PetriNetUnfolderBase]: 3183/8664 cut-off events. [2024-05-12 13:33:42,099 INFO L125 PetriNetUnfolderBase]: For 146149/146362 co-relation queries the response was YES. [2024-05-12 13:33:42,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35280 conditions, 8664 events. 3183/8664 cut-off events. For 146149/146362 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 95669 event pairs, 1564 based on Foata normal form. 38/7894 useless extension candidates. Maximal degree in co-relation 35143. Up to 4268 conditions per place. [2024-05-12 13:33:42,206 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 183 selfloop transitions, 85 changer transitions 0/281 dead transitions. [2024-05-12 13:33:42,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 281 transitions, 4241 flow [2024-05-12 13:33:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:33:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:33:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-05-12 13:33:42,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321637426900585 [2024-05-12 13:33:42,208 INFO L175 Difference]: Start difference. First operand has 302 places, 248 transitions, 3543 flow. Second operand 9 states and 182 transitions. [2024-05-12 13:33:42,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 281 transitions, 4241 flow [2024-05-12 13:33:42,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 281 transitions, 4025 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-05-12 13:33:42,889 INFO L231 Difference]: Finished difference. Result has 303 places, 248 transitions, 3509 flow [2024-05-12 13:33:42,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3509, PETRI_PLACES=303, PETRI_TRANSITIONS=248} [2024-05-12 13:33:42,890 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 261 predicate places. [2024-05-12 13:33:42,890 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 248 transitions, 3509 flow [2024-05-12 13:33:42,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:42,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:42,890 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 13:33:42,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 13:33:42,891 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:42,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1489390618, now seen corresponding path program 20 times [2024-05-12 13:33:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:42,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645865387] [2024-05-12 13:33:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:42,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:44,257 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 13:33:44,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:44,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645865387] [2024-05-12 13:33:44,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645865387] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:44,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:44,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124617602] [2024-05-12 13:33:44,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:44,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:44,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:44,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:44,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 248 transitions, 3509 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:44,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:44,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:44,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:46,035 INFO L124 PetriNetUnfolderBase]: 3265/8622 cut-off events. [2024-05-12 13:33:46,035 INFO L125 PetriNetUnfolderBase]: For 147414/147630 co-relation queries the response was YES. [2024-05-12 13:33:46,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35022 conditions, 8622 events. 3265/8622 cut-off events. For 147414/147630 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 94405 event pairs, 1331 based on Foata normal form. 41/7984 useless extension candidates. Maximal degree in co-relation 34885. Up to 2778 conditions per place. [2024-05-12 13:33:46,145 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 208 selfloop transitions, 70 changer transitions 0/291 dead transitions. [2024-05-12 13:33:46,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 291 transitions, 4525 flow [2024-05-12 13:33:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-05-12 13:33:46,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-05-12 13:33:46,147 INFO L175 Difference]: Start difference. First operand has 303 places, 248 transitions, 3509 flow. Second operand 10 states and 205 transitions. [2024-05-12 13:33:46,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 291 transitions, 4525 flow [2024-05-12 13:33:46,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 291 transitions, 4303 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-05-12 13:33:46,890 INFO L231 Difference]: Finished difference. Result has 302 places, 248 transitions, 3449 flow [2024-05-12 13:33:46,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3449, PETRI_PLACES=302, PETRI_TRANSITIONS=248} [2024-05-12 13:33:46,893 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 260 predicate places. [2024-05-12 13:33:46,893 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 248 transitions, 3449 flow [2024-05-12 13:33:46,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:46,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:46,894 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 13:33:46,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 13:33:46,894 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:46,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1719314638, now seen corresponding path program 21 times [2024-05-12 13:33:46,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026962434] [2024-05-12 13:33:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:46,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:48,057 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 13:33:48,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:48,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026962434] [2024-05-12 13:33:48,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026962434] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:48,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:48,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:48,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995710422] [2024-05-12 13:33:48,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:48,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:48,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:48,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:48,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:48,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 248 transitions, 3449 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:48,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:48,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:48,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:49,843 INFO L124 PetriNetUnfolderBase]: 3419/9317 cut-off events. [2024-05-12 13:33:49,844 INFO L125 PetriNetUnfolderBase]: For 167363/167594 co-relation queries the response was YES. [2024-05-12 13:33:49,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37088 conditions, 9317 events. 3419/9317 cut-off events. For 167363/167594 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 104916 event pairs, 1907 based on Foata normal form. 45/8484 useless extension candidates. Maximal degree in co-relation 36953. Up to 5277 conditions per place. [2024-05-12 13:33:49,962 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 238 selfloop transitions, 45 changer transitions 0/296 dead transitions. [2024-05-12 13:33:49,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 296 transitions, 4549 flow [2024-05-12 13:33:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-05-12 13:33:49,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-05-12 13:33:49,963 INFO L175 Difference]: Start difference. First operand has 302 places, 248 transitions, 3449 flow. Second operand 10 states and 209 transitions. [2024-05-12 13:33:49,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 296 transitions, 4549 flow [2024-05-12 13:33:50,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 296 transitions, 4385 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-05-12 13:33:50,664 INFO L231 Difference]: Finished difference. Result has 302 places, 249 transitions, 3409 flow [2024-05-12 13:33:50,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3289, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3409, PETRI_PLACES=302, PETRI_TRANSITIONS=249} [2024-05-12 13:33:50,664 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 260 predicate places. [2024-05-12 13:33:50,664 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 249 transitions, 3409 flow [2024-05-12 13:33:50,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:50,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:50,665 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 13:33:50,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 13:33:50,665 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:50,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:50,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1719047728, now seen corresponding path program 22 times [2024-05-12 13:33:50,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:50,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057601236] [2024-05-12 13:33:50,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:50,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:52,177 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 13:33:52,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057601236] [2024-05-12 13:33:52,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057601236] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:52,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:52,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:52,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834719398] [2024-05-12 13:33:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:52,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:52,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:52,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:52,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:52,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:52,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 249 transitions, 3409 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:52,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:52,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:52,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:54,149 INFO L124 PetriNetUnfolderBase]: 3419/9268 cut-off events. [2024-05-12 13:33:54,150 INFO L125 PetriNetUnfolderBase]: For 153787/154009 co-relation queries the response was YES. [2024-05-12 13:33:54,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36962 conditions, 9268 events. 3419/9268 cut-off events. For 153787/154009 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 103900 event pairs, 1922 based on Foata normal form. 39/8416 useless extension candidates. Maximal degree in co-relation 36827. Up to 5701 conditions per place. [2024-05-12 13:33:54,265 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 233 selfloop transitions, 48 changer transitions 0/294 dead transitions. [2024-05-12 13:33:54,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 294 transitions, 4548 flow [2024-05-12 13:33:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-05-12 13:33:54,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342105263157895 [2024-05-12 13:33:54,267 INFO L175 Difference]: Start difference. First operand has 302 places, 249 transitions, 3409 flow. Second operand 10 states and 203 transitions. [2024-05-12 13:33:54,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 294 transitions, 4548 flow [2024-05-12 13:33:55,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 294 transitions, 4437 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-05-12 13:33:55,145 INFO L231 Difference]: Finished difference. Result has 305 places, 255 transitions, 3537 flow [2024-05-12 13:33:55,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3537, PETRI_PLACES=305, PETRI_TRANSITIONS=255} [2024-05-12 13:33:55,145 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-05-12 13:33:55,146 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 255 transitions, 3537 flow [2024-05-12 13:33:55,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:55,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:55,146 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 13:33:55,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 13:33:55,146 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:55,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1719055168, now seen corresponding path program 23 times [2024-05-12 13:33:55,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:55,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440919861] [2024-05-12 13:33:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:55,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:56,409 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 13:33:56,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:56,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440919861] [2024-05-12 13:33:56,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440919861] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:56,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:56,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:33:56,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690458355] [2024-05-12 13:33:56,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:56,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:33:56,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:56,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:33:56,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:33:56,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:33:56,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 255 transitions, 3537 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:56,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:56,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:33:56,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:58,257 INFO L124 PetriNetUnfolderBase]: 3331/9014 cut-off events. [2024-05-12 13:33:58,258 INFO L125 PetriNetUnfolderBase]: For 135382/135602 co-relation queries the response was YES. [2024-05-12 13:33:58,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35689 conditions, 9014 events. 3331/9014 cut-off events. For 135382/135602 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 100277 event pairs, 1879 based on Foata normal form. 38/8191 useless extension candidates. Maximal degree in co-relation 35552. Up to 5539 conditions per place. [2024-05-12 13:33:58,351 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 237 selfloop transitions, 48 changer transitions 0/298 dead transitions. [2024-05-12 13:33:58,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 298 transitions, 4476 flow [2024-05-12 13:33:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:33:58,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:33:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-05-12 13:33:58,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421052631578948 [2024-05-12 13:33:58,352 INFO L175 Difference]: Start difference. First operand has 305 places, 255 transitions, 3537 flow. Second operand 10 states and 206 transitions. [2024-05-12 13:33:58,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 298 transitions, 4476 flow [2024-05-12 13:33:58,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 298 transitions, 4283 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-05-12 13:33:58,916 INFO L231 Difference]: Finished difference. Result has 310 places, 256 transitions, 3473 flow [2024-05-12 13:33:58,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3368, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3473, PETRI_PLACES=310, PETRI_TRANSITIONS=256} [2024-05-12 13:33:58,917 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-05-12 13:33:58,917 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 256 transitions, 3473 flow [2024-05-12 13:33:58,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:33:58,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:58,917 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 13:33:58,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 13:33:58,918 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:58,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1711905328, now seen corresponding path program 24 times [2024-05-12 13:33:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:58,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317663698] [2024-05-12 13:33:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:58,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:00,289 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 13:34:00,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:00,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317663698] [2024-05-12 13:34:00,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317663698] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:00,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:00,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:00,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164379106] [2024-05-12 13:34:00,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:00,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:00,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:00,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:00,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:00,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:00,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 256 transitions, 3473 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:00,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:00,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:00,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:02,194 INFO L124 PetriNetUnfolderBase]: 3433/9324 cut-off events. [2024-05-12 13:34:02,195 INFO L125 PetriNetUnfolderBase]: For 156042/156273 co-relation queries the response was YES. [2024-05-12 13:34:02,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36621 conditions, 9324 events. 3433/9324 cut-off events. For 156042/156273 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 104761 event pairs, 1930 based on Foata normal form. 45/8482 useless extension candidates. Maximal degree in co-relation 36483. Up to 5520 conditions per place. [2024-05-12 13:34:02,305 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 242 selfloop transitions, 41 changer transitions 0/296 dead transitions. [2024-05-12 13:34:02,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 296 transitions, 4387 flow [2024-05-12 13:34:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:02,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-05-12 13:34:02,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:34:02,307 INFO L175 Difference]: Start difference. First operand has 310 places, 256 transitions, 3473 flow. Second operand 10 states and 200 transitions. [2024-05-12 13:34:02,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 296 transitions, 4387 flow [2024-05-12 13:34:02,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 296 transitions, 4292 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 13:34:02,981 INFO L231 Difference]: Finished difference. Result has 314 places, 257 transitions, 3494 flow [2024-05-12 13:34:02,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3380, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3494, PETRI_PLACES=314, PETRI_TRANSITIONS=257} [2024-05-12 13:34:02,982 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-05-12 13:34:02,982 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 257 transitions, 3494 flow [2024-05-12 13:34:02,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:02,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:02,982 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 13:34:02,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 13:34:02,982 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:02,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1976422895, now seen corresponding path program 6 times [2024-05-12 13:34:02,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:02,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856708711] [2024-05-12 13:34:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:02,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:04,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856708711] [2024-05-12 13:34:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856708711] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:04,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:04,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:04,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736504620] [2024-05-12 13:34:04,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:04,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:04,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:04,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:04,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:04,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:04,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 257 transitions, 3494 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:04,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:04,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:04,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:06,388 INFO L124 PetriNetUnfolderBase]: 3475/9432 cut-off events. [2024-05-12 13:34:06,389 INFO L125 PetriNetUnfolderBase]: For 154625/154849 co-relation queries the response was YES. [2024-05-12 13:34:06,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37326 conditions, 9432 events. 3475/9432 cut-off events. For 154625/154849 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 106148 event pairs, 2405 based on Foata normal form. 43/8522 useless extension candidates. Maximal degree in co-relation 37187. Up to 6213 conditions per place. [2024-05-12 13:34:06,507 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 255 selfloop transitions, 17 changer transitions 0/285 dead transitions. [2024-05-12 13:34:06,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 285 transitions, 4362 flow [2024-05-12 13:34:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-05-12 13:34:06,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-05-12 13:34:06,509 INFO L175 Difference]: Start difference. First operand has 314 places, 257 transitions, 3494 flow. Second operand 10 states and 183 transitions. [2024-05-12 13:34:06,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 285 transitions, 4362 flow [2024-05-12 13:34:07,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 285 transitions, 4260 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-05-12 13:34:07,286 INFO L231 Difference]: Finished difference. Result has 317 places, 260 transitions, 3492 flow [2024-05-12 13:34:07,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3392, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3492, PETRI_PLACES=317, PETRI_TRANSITIONS=260} [2024-05-12 13:34:07,287 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-05-12 13:34:07,287 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 260 transitions, 3492 flow [2024-05-12 13:34:07,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:07,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:07,288 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 13:34:07,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 13:34:07,288 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:07,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:07,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1711897888, now seen corresponding path program 25 times [2024-05-12 13:34:07,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:07,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084604035] [2024-05-12 13:34:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:07,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:08,497 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 13:34:08,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084604035] [2024-05-12 13:34:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084604035] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:08,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:08,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:08,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616795986] [2024-05-12 13:34:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:08,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:08,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:08,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:08,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 260 transitions, 3492 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:08,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:08,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:08,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:10,360 INFO L124 PetriNetUnfolderBase]: 3480/9434 cut-off events. [2024-05-12 13:34:10,361 INFO L125 PetriNetUnfolderBase]: For 153195/153427 co-relation queries the response was YES. [2024-05-12 13:34:10,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36975 conditions, 9434 events. 3480/9434 cut-off events. For 153195/153427 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 106008 event pairs, 1986 based on Foata normal form. 41/8580 useless extension candidates. Maximal degree in co-relation 36834. Up to 5613 conditions per place. [2024-05-12 13:34:10,479 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 245 selfloop transitions, 42 changer transitions 0/300 dead transitions. [2024-05-12 13:34:10,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 300 transitions, 4418 flow [2024-05-12 13:34:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-05-12 13:34:10,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289473684210526 [2024-05-12 13:34:10,490 INFO L175 Difference]: Start difference. First operand has 317 places, 260 transitions, 3492 flow. Second operand 10 states and 201 transitions. [2024-05-12 13:34:10,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 300 transitions, 4418 flow [2024-05-12 13:34:11,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 300 transitions, 4345 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-05-12 13:34:11,306 INFO L231 Difference]: Finished difference. Result has 321 places, 261 transitions, 3537 flow [2024-05-12 13:34:11,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3537, PETRI_PLACES=321, PETRI_TRANSITIONS=261} [2024-05-12 13:34:11,306 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-05-12 13:34:11,306 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 261 transitions, 3537 flow [2024-05-12 13:34:11,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:11,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:11,307 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 13:34:11,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 13:34:11,308 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:11,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:11,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1967476016, now seen corresponding path program 26 times [2024-05-12 13:34:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:11,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458721120] [2024-05-12 13:34:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:11,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:12,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:12,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458721120] [2024-05-12 13:34:12,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458721120] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:12,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:12,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:12,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757739020] [2024-05-12 13:34:12,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:12,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:12,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:12,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:12,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:12,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 261 transitions, 3537 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:12,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:12,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:12,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:14,709 INFO L124 PetriNetUnfolderBase]: 3692/10071 cut-off events. [2024-05-12 13:34:14,709 INFO L125 PetriNetUnfolderBase]: For 206914/207157 co-relation queries the response was YES. [2024-05-12 13:34:14,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39918 conditions, 10071 events. 3692/10071 cut-off events. For 206914/207157 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 115134 event pairs, 2110 based on Foata normal form. 48/9200 useless extension candidates. Maximal degree in co-relation 39775. Up to 4504 conditions per place. [2024-05-12 13:34:14,841 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 255 selfloop transitions, 45 changer transitions 0/313 dead transitions. [2024-05-12 13:34:14,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 313 transitions, 4873 flow [2024-05-12 13:34:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-05-12 13:34:14,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2024-05-12 13:34:14,843 INFO L175 Difference]: Start difference. First operand has 321 places, 261 transitions, 3537 flow. Second operand 10 states and 212 transitions. [2024-05-12 13:34:14,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 313 transitions, 4873 flow [2024-05-12 13:34:15,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 313 transitions, 4783 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-05-12 13:34:15,869 INFO L231 Difference]: Finished difference. Result has 323 places, 262 transitions, 3571 flow [2024-05-12 13:34:15,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3447, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3571, PETRI_PLACES=323, PETRI_TRANSITIONS=262} [2024-05-12 13:34:15,869 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 281 predicate places. [2024-05-12 13:34:15,869 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 262 transitions, 3571 flow [2024-05-12 13:34:15,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:15,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:15,870 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 13:34:15,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 13:34:15,870 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:15,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2013791771, now seen corresponding path program 7 times [2024-05-12 13:34:15,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:15,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024848128] [2024-05-12 13:34:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:16,950 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 13:34:16,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:16,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024848128] [2024-05-12 13:34:16,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024848128] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:16,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:16,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:34:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906903821] [2024-05-12 13:34:16,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:16,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:34:16,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:34:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:34:17,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:17,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 262 transitions, 3571 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:17,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:17,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:17,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:18,828 INFO L124 PetriNetUnfolderBase]: 3628/9915 cut-off events. [2024-05-12 13:34:18,829 INFO L125 PetriNetUnfolderBase]: For 183862/184097 co-relation queries the response was YES. [2024-05-12 13:34:18,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39072 conditions, 9915 events. 3628/9915 cut-off events. For 183862/184097 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 113098 event pairs, 2502 based on Foata normal form. 47/8948 useless extension candidates. Maximal degree in co-relation 38928. Up to 6431 conditions per place. [2024-05-12 13:34:18,975 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 257 selfloop transitions, 18 changer transitions 0/288 dead transitions. [2024-05-12 13:34:18,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 288 transitions, 4259 flow [2024-05-12 13:34:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:34:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:34:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-05-12 13:34:18,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-05-12 13:34:18,976 INFO L175 Difference]: Start difference. First operand has 323 places, 262 transitions, 3571 flow. Second operand 9 states and 169 transitions. [2024-05-12 13:34:18,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 288 transitions, 4259 flow [2024-05-12 13:34:20,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 288 transitions, 4113 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-05-12 13:34:20,233 INFO L231 Difference]: Finished difference. Result has 324 places, 262 transitions, 3470 flow [2024-05-12 13:34:20,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3470, PETRI_PLACES=324, PETRI_TRANSITIONS=262} [2024-05-12 13:34:20,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-05-12 13:34:20,234 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 262 transitions, 3470 flow [2024-05-12 13:34:20,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:20,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:20,235 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 13:34:20,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 13:34:20,235 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:20,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1976413316, now seen corresponding path program 27 times [2024-05-12 13:34:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:20,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083246024] [2024-05-12 13:34:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:21,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083246024] [2024-05-12 13:34:21,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083246024] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:21,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:21,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671533581] [2024-05-12 13:34:21,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:21,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:21,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:21,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:21,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 262 transitions, 3470 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:21,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:21,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:21,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:23,770 INFO L124 PetriNetUnfolderBase]: 3502/9509 cut-off events. [2024-05-12 13:34:23,770 INFO L125 PetriNetUnfolderBase]: For 138580/138806 co-relation queries the response was YES. [2024-05-12 13:34:23,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36473 conditions, 9509 events. 3502/9509 cut-off events. For 138580/138806 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 107085 event pairs, 2424 based on Foata normal form. 44/8585 useless extension candidates. Maximal degree in co-relation 36328. Up to 6306 conditions per place. [2024-05-12 13:34:23,898 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 254 selfloop transitions, 16 changer transitions 0/283 dead transitions. [2024-05-12 13:34:23,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 283 transitions, 4160 flow [2024-05-12 13:34:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-05-12 13:34:23,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-05-12 13:34:23,900 INFO L175 Difference]: Start difference. First operand has 324 places, 262 transitions, 3470 flow. Second operand 10 states and 177 transitions. [2024-05-12 13:34:23,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 283 transitions, 4160 flow [2024-05-12 13:34:24,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 283 transitions, 4100 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-05-12 13:34:24,795 INFO L231 Difference]: Finished difference. Result has 324 places, 263 transitions, 3478 flow [2024-05-12 13:34:24,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3478, PETRI_PLACES=324, PETRI_TRANSITIONS=263} [2024-05-12 13:34:24,796 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-05-12 13:34:24,796 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 263 transitions, 3478 flow [2024-05-12 13:34:24,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:24,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:24,796 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 13:34:24,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 13:34:24,796 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:24,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1967209106, now seen corresponding path program 28 times [2024-05-12 13:34:24,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:24,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040677558] [2024-05-12 13:34:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:24,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:25,946 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 13:34:25,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:25,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040677558] [2024-05-12 13:34:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040677558] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166935921] [2024-05-12 13:34:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:25,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:26,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:26,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 263 transitions, 3478 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:26,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:26,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:26,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:27,970 INFO L124 PetriNetUnfolderBase]: 3622/9878 cut-off events. [2024-05-12 13:34:27,971 INFO L125 PetriNetUnfolderBase]: For 162378/162616 co-relation queries the response was YES. [2024-05-12 13:34:28,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38166 conditions, 9878 events. 3622/9878 cut-off events. For 162378/162616 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 112329 event pairs, 2031 based on Foata normal form. 44/9023 useless extension candidates. Maximal degree in co-relation 38021. Up to 4429 conditions per place. [2024-05-12 13:34:28,101 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 242 selfloop transitions, 56 changer transitions 0/311 dead transitions. [2024-05-12 13:34:28,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 311 transitions, 4656 flow [2024-05-12 13:34:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-05-12 13:34:28,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2024-05-12 13:34:28,103 INFO L175 Difference]: Start difference. First operand has 324 places, 263 transitions, 3478 flow. Second operand 10 states and 208 transitions. [2024-05-12 13:34:28,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 311 transitions, 4656 flow [2024-05-12 13:34:29,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 311 transitions, 4598 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-05-12 13:34:29,086 INFO L231 Difference]: Finished difference. Result has 327 places, 265 transitions, 3615 flow [2024-05-12 13:34:29,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3420, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3615, PETRI_PLACES=327, PETRI_TRANSITIONS=265} [2024-05-12 13:34:29,086 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-05-12 13:34:29,086 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 265 transitions, 3615 flow [2024-05-12 13:34:29,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:29,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:29,087 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 13:34:29,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 13:34:29,087 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:29,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:29,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1967216546, now seen corresponding path program 29 times [2024-05-12 13:34:29,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:29,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023303716] [2024-05-12 13:34:29,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:29,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:30,370 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 13:34:30,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:30,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023303716] [2024-05-12 13:34:30,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023303716] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:30,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:30,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:34:30,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646362473] [2024-05-12 13:34:30,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:30,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:34:30,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:30,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:34:30,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:34:30,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:30,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 265 transitions, 3615 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:30,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:30,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:30,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:32,250 INFO L124 PetriNetUnfolderBase]: 3659/9811 cut-off events. [2024-05-12 13:34:32,251 INFO L125 PetriNetUnfolderBase]: For 164325/164566 co-relation queries the response was YES. [2024-05-12 13:34:32,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38436 conditions, 9811 events. 3659/9811 cut-off events. For 164325/164566 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 110474 event pairs, 1856 based on Foata normal form. 42/8876 useless extension candidates. Maximal degree in co-relation 38289. Up to 4767 conditions per place. [2024-05-12 13:34:32,374 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 201 selfloop transitions, 92 changer transitions 0/306 dead transitions. [2024-05-12 13:34:32,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 306 transitions, 4497 flow [2024-05-12 13:34:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-05-12 13:34:32,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531578947368421 [2024-05-12 13:34:32,375 INFO L175 Difference]: Start difference. First operand has 327 places, 265 transitions, 3615 flow. Second operand 10 states and 202 transitions. [2024-05-12 13:34:32,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 306 transitions, 4497 flow [2024-05-12 13:34:33,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 306 transitions, 4360 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-05-12 13:34:33,437 INFO L231 Difference]: Finished difference. Result has 331 places, 268 transitions, 3761 flow [2024-05-12 13:34:33,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3761, PETRI_PLACES=331, PETRI_TRANSITIONS=268} [2024-05-12 13:34:33,437 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 289 predicate places. [2024-05-12 13:34:33,437 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 268 transitions, 3761 flow [2024-05-12 13:34:33,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 13:34:33,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:33,438 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 13:34:33,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 13:34:33,438 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:33,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:33,438 INFO L85 PathProgramCache]: Analyzing trace with hash 402712192, now seen corresponding path program 1 times [2024-05-12 13:34:33,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:33,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593214384] [2024-05-12 13:34:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:33,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:35,316 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 13:34:35,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:35,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593214384] [2024-05-12 13:34:35,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593214384] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:35,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:35,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:34:35,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137182755] [2024-05-12 13:34:35,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:35,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:34:35,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:35,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:34:35,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:34:35,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:35,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 268 transitions, 3761 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:34:35,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:35,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:35,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:37,616 INFO L124 PetriNetUnfolderBase]: 3623/9819 cut-off events. [2024-05-12 13:34:37,617 INFO L125 PetriNetUnfolderBase]: For 163580/163807 co-relation queries the response was YES. [2024-05-12 13:34:37,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38475 conditions, 9819 events. 3623/9819 cut-off events. For 163580/163807 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 111490 event pairs, 2083 based on Foata normal form. 48/8889 useless extension candidates. Maximal degree in co-relation 38326. Up to 6090 conditions per place. [2024-05-12 13:34:37,728 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 259 selfloop transitions, 44 changer transitions 0/316 dead transitions. [2024-05-12 13:34:37,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 316 transitions, 4599 flow [2024-05-12 13:34:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:34:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:34:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 232 transitions. [2024-05-12 13:34:37,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-05-12 13:34:37,729 INFO L175 Difference]: Start difference. First operand has 331 places, 268 transitions, 3761 flow. Second operand 12 states and 232 transitions. [2024-05-12 13:34:37,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 316 transitions, 4599 flow [2024-05-12 13:34:38,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 316 transitions, 4415 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-05-12 13:34:38,880 INFO L231 Difference]: Finished difference. Result has 337 places, 268 transitions, 3669 flow [2024-05-12 13:34:38,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3577, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3669, PETRI_PLACES=337, PETRI_TRANSITIONS=268} [2024-05-12 13:34:38,881 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2024-05-12 13:34:38,881 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 268 transitions, 3669 flow [2024-05-12 13:34:38,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:34:38,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:38,881 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 13:34:38,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 13:34:38,882 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:38,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:38,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1080077602, now seen corresponding path program 2 times [2024-05-12 13:34:38,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:38,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389147214] [2024-05-12 13:34:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:38,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:40,430 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 13:34:40,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:40,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389147214] [2024-05-12 13:34:40,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389147214] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:40,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:40,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:34:40,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485947572] [2024-05-12 13:34:40,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:40,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:34:40,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:34:40,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:34:40,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:40,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 268 transitions, 3669 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:34:40,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:40,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:40,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:42,436 INFO L124 PetriNetUnfolderBase]: 3622/9605 cut-off events. [2024-05-12 13:34:42,436 INFO L125 PetriNetUnfolderBase]: For 148184/148428 co-relation queries the response was YES. [2024-05-12 13:34:42,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37399 conditions, 9605 events. 3622/9605 cut-off events. For 148184/148428 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 107513 event pairs, 1504 based on Foata normal form. 47/8846 useless extension candidates. Maximal degree in co-relation 37249. Up to 4877 conditions per place. [2024-05-12 13:34:42,562 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 248 selfloop transitions, 60 changer transitions 0/321 dead transitions. [2024-05-12 13:34:42,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 321 transitions, 4565 flow [2024-05-12 13:34:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:34:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:34:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2024-05-12 13:34:42,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-05-12 13:34:42,563 INFO L175 Difference]: Start difference. First operand has 337 places, 268 transitions, 3669 flow. Second operand 12 states and 236 transitions. [2024-05-12 13:34:42,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 321 transitions, 4565 flow [2024-05-12 13:34:43,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 321 transitions, 4475 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-05-12 13:34:43,818 INFO L231 Difference]: Finished difference. Result has 339 places, 268 transitions, 3703 flow [2024-05-12 13:34:43,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3579, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3703, PETRI_PLACES=339, PETRI_TRANSITIONS=268} [2024-05-12 13:34:43,819 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2024-05-12 13:34:43,819 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 268 transitions, 3703 flow [2024-05-12 13:34:43,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:34:43,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:43,819 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 13:34:43,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 13:34:43,820 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:43,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash -558166452, now seen corresponding path program 3 times [2024-05-12 13:34:43,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:43,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135652326] [2024-05-12 13:34:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:43,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:45,476 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 13:34:45,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:45,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135652326] [2024-05-12 13:34:45,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135652326] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:45,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:45,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:34:45,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762063231] [2024-05-12 13:34:45,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:45,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:34:45,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:45,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:34:45,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:34:45,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:45,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 268 transitions, 3703 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:34:45,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:45,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:45,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:47,901 INFO L124 PetriNetUnfolderBase]: 3663/9982 cut-off events. [2024-05-12 13:34:47,901 INFO L125 PetriNetUnfolderBase]: For 153014/153254 co-relation queries the response was YES. [2024-05-12 13:34:47,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38092 conditions, 9982 events. 3663/9982 cut-off events. For 153014/153254 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 113842 event pairs, 2115 based on Foata normal form. 48/9027 useless extension candidates. Maximal degree in co-relation 37941. Up to 6158 conditions per place. [2024-05-12 13:34:48,007 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 254 selfloop transitions, 44 changer transitions 0/311 dead transitions. [2024-05-12 13:34:48,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 311 transitions, 4516 flow [2024-05-12 13:34:48,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:34:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:34:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-05-12 13:34:48,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-05-12 13:34:48,008 INFO L175 Difference]: Start difference. First operand has 339 places, 268 transitions, 3703 flow. Second operand 12 states and 231 transitions. [2024-05-12 13:34:48,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 311 transitions, 4516 flow [2024-05-12 13:34:49,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 311 transitions, 4413 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:34:49,083 INFO L231 Difference]: Finished difference. Result has 343 places, 269 transitions, 3725 flow [2024-05-12 13:34:49,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3600, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3725, PETRI_PLACES=343, PETRI_TRANSITIONS=269} [2024-05-12 13:34:49,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 301 predicate places. [2024-05-12 13:34:49,084 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 269 transitions, 3725 flow [2024-05-12 13:34:49,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:34:49,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:49,084 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 13:34:49,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 13:34:49,084 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:49,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash -558397092, now seen corresponding path program 4 times [2024-05-12 13:34:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:49,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919739432] [2024-05-12 13:34:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:49,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:50,635 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 13:34:50,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919739432] [2024-05-12 13:34:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919739432] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:50,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:50,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:34:50,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331074966] [2024-05-12 13:34:50,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:50,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:34:50,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:50,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:34:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:34:50,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:50,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 269 transitions, 3725 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:34:50,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:50,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:50,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:52,948 INFO L124 PetriNetUnfolderBase]: 3654/9962 cut-off events. [2024-05-12 13:34:52,948 INFO L125 PetriNetUnfolderBase]: For 143372/143612 co-relation queries the response was YES. [2024-05-12 13:34:53,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37802 conditions, 9962 events. 3654/9962 cut-off events. For 143372/143612 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 113645 event pairs, 2105 based on Foata normal form. 48/9010 useless extension candidates. Maximal degree in co-relation 37649. Up to 6148 conditions per place. [2024-05-12 13:34:53,078 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 254 selfloop transitions, 44 changer transitions 0/311 dead transitions. [2024-05-12 13:34:53,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 311 transitions, 4519 flow [2024-05-12 13:34:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:34:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:34:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 232 transitions. [2024-05-12 13:34:53,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-05-12 13:34:53,080 INFO L175 Difference]: Start difference. First operand has 343 places, 269 transitions, 3725 flow. Second operand 12 states and 232 transitions. [2024-05-12 13:34:53,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 311 transitions, 4519 flow [2024-05-12 13:34:54,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 311 transitions, 4430 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:34:54,200 INFO L231 Difference]: Finished difference. Result has 346 places, 269 transitions, 3728 flow [2024-05-12 13:34:54,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3636, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3728, PETRI_PLACES=346, PETRI_TRANSITIONS=269} [2024-05-12 13:34:54,200 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 304 predicate places. [2024-05-12 13:34:54,200 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 269 transitions, 3728 flow [2024-05-12 13:34:54,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:34:54,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:54,201 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 13:34:54,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 13:34:54,201 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:54,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1361968336, now seen corresponding path program 5 times [2024-05-12 13:34:54,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:54,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894537058] [2024-05-12 13:34:54,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:54,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:56,042 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 13:34:56,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:56,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894537058] [2024-05-12 13:34:56,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894537058] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:56,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:56,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:34:56,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519967262] [2024-05-12 13:34:56,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:56,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:34:56,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:34:56,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:34:56,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:34:56,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 269 transitions, 3728 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:34:56,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:56,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:34:56,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:58,696 INFO L124 PetriNetUnfolderBase]: 3715/10153 cut-off events. [2024-05-12 13:34:58,697 INFO L125 PetriNetUnfolderBase]: For 146465/146705 co-relation queries the response was YES. [2024-05-12 13:34:58,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38150 conditions, 10153 events. 3715/10153 cut-off events. For 146465/146705 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 116298 event pairs, 2061 based on Foata normal form. 48/9162 useless extension candidates. Maximal degree in co-relation 37996. Up to 5715 conditions per place. [2024-05-12 13:34:58,804 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 241 selfloop transitions, 59 changer transitions 0/313 dead transitions. [2024-05-12 13:34:58,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 313 transitions, 4546 flow [2024-05-12 13:34:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:34:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:34:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 234 transitions. [2024-05-12 13:34:58,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-05-12 13:34:58,806 INFO L175 Difference]: Start difference. First operand has 346 places, 269 transitions, 3728 flow. Second operand 12 states and 234 transitions. [2024-05-12 13:34:58,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 313 transitions, 4546 flow [2024-05-12 13:34:59,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 313 transitions, 4470 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:34:59,778 INFO L231 Difference]: Finished difference. Result has 349 places, 269 transitions, 3773 flow [2024-05-12 13:34:59,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3652, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3773, PETRI_PLACES=349, PETRI_TRANSITIONS=269} [2024-05-12 13:34:59,779 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 307 predicate places. [2024-05-12 13:34:59,779 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 269 transitions, 3773 flow [2024-05-12 13:34:59,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:34:59,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:59,779 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 13:34:59,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 13:34:59,780 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:34:59,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1362198976, now seen corresponding path program 6 times [2024-05-12 13:34:59,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:59,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566474708] [2024-05-12 13:34:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:02,090 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 13:35:02,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:02,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566474708] [2024-05-12 13:35:02,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566474708] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:02,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:02,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:02,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969676577] [2024-05-12 13:35:02,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:02,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:02,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:02,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:02,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:02,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:02,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 269 transitions, 3773 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:02,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:02,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:02,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:04,289 INFO L124 PetriNetUnfolderBase]: 3712/10168 cut-off events. [2024-05-12 13:35:04,290 INFO L125 PetriNetUnfolderBase]: For 136087/136332 co-relation queries the response was YES. [2024-05-12 13:35:04,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38061 conditions, 10168 events. 3712/10168 cut-off events. For 136087/136332 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 116441 event pairs, 2079 based on Foata normal form. 47/9169 useless extension candidates. Maximal degree in co-relation 37906. Up to 5705 conditions per place. [2024-05-12 13:35:04,432 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 246 selfloop transitions, 58 changer transitions 0/317 dead transitions. [2024-05-12 13:35:04,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 317 transitions, 4615 flow [2024-05-12 13:35:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:35:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:35:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-05-12 13:35:04,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219298245614035 [2024-05-12 13:35:04,434 INFO L175 Difference]: Start difference. First operand has 349 places, 269 transitions, 3773 flow. Second operand 12 states and 238 transitions. [2024-05-12 13:35:04,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 317 transitions, 4615 flow [2024-05-12 13:35:05,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 317 transitions, 4498 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 13:35:05,611 INFO L231 Difference]: Finished difference. Result has 351 places, 269 transitions, 3775 flow [2024-05-12 13:35:05,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3656, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3775, PETRI_PLACES=351, PETRI_TRANSITIONS=269} [2024-05-12 13:35:05,612 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 309 predicate places. [2024-05-12 13:35:05,612 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 269 transitions, 3775 flow [2024-05-12 13:35:05,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:05,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:05,613 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 13:35:05,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 13:35:05,613 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:35:05,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:05,614 INFO L85 PathProgramCache]: Analyzing trace with hash -395833602, now seen corresponding path program 7 times [2024-05-12 13:35:05,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:05,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712996330] [2024-05-12 13:35:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:05,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:07,512 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 13:35:07,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:07,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712996330] [2024-05-12 13:35:07,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712996330] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:07,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:07,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:07,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223686994] [2024-05-12 13:35:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:07,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:07,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:07,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:07,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:07,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:07,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 269 transitions, 3775 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:07,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:07,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:07,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:10,124 INFO L124 PetriNetUnfolderBase]: 3711/10193 cut-off events. [2024-05-12 13:35:10,124 INFO L125 PetriNetUnfolderBase]: For 136881/137123 co-relation queries the response was YES. [2024-05-12 13:35:10,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38260 conditions, 10193 events. 3711/10193 cut-off events. For 136881/137123 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 117042 event pairs, 1880 based on Foata normal form. 49/9301 useless extension candidates. Maximal degree in co-relation 38104. Up to 3883 conditions per place. [2024-05-12 13:35:10,277 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 250 selfloop transitions, 57 changer transitions 0/320 dead transitions. [2024-05-12 13:35:10,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 320 transitions, 4783 flow [2024-05-12 13:35:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:35:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:35:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 240 transitions. [2024-05-12 13:35:10,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:35:10,278 INFO L175 Difference]: Start difference. First operand has 351 places, 269 transitions, 3775 flow. Second operand 12 states and 240 transitions. [2024-05-12 13:35:10,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 320 transitions, 4783 flow [2024-05-12 13:35:11,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 320 transitions, 4673 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:35:11,449 INFO L231 Difference]: Finished difference. Result has 354 places, 269 transitions, 3782 flow [2024-05-12 13:35:11,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3782, PETRI_PLACES=354, PETRI_TRANSITIONS=269} [2024-05-12 13:35:11,450 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 312 predicate places. [2024-05-12 13:35:11,450 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 269 transitions, 3782 flow [2024-05-12 13:35:11,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:11,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:11,451 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 13:35:11,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 13:35:11,451 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:35:11,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash -625752852, now seen corresponding path program 8 times [2024-05-12 13:35:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:11,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109091497] [2024-05-12 13:35:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:11,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:13,308 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 13:35:13,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:13,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109091497] [2024-05-12 13:35:13,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109091497] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:13,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:13,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:13,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801270216] [2024-05-12 13:35:13,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:13,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:13,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:13,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:13,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:13,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:13,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 269 transitions, 3782 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:13,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:13,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:13,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:15,768 INFO L124 PetriNetUnfolderBase]: 3778/10407 cut-off events. [2024-05-12 13:35:15,768 INFO L125 PetriNetUnfolderBase]: For 140308/140556 co-relation queries the response was YES. [2024-05-12 13:35:15,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38696 conditions, 10407 events. 3778/10407 cut-off events. For 140308/140556 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 120307 event pairs, 1738 based on Foata normal form. 49/9515 useless extension candidates. Maximal degree in co-relation 38539. Up to 5661 conditions per place. [2024-05-12 13:35:15,931 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 252 selfloop transitions, 59 changer transitions 0/324 dead transitions. [2024-05-12 13:35:15,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 324 transitions, 4823 flow [2024-05-12 13:35:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:35:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:35:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 242 transitions. [2024-05-12 13:35:15,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2024-05-12 13:35:15,933 INFO L175 Difference]: Start difference. First operand has 354 places, 269 transitions, 3782 flow. Second operand 12 states and 242 transitions. [2024-05-12 13:35:15,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 324 transitions, 4823 flow [2024-05-12 13:35:17,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 324 transitions, 4710 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 13:35:17,137 INFO L231 Difference]: Finished difference. Result has 356 places, 270 transitions, 3797 flow [2024-05-12 13:35:17,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3669, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3797, PETRI_PLACES=356, PETRI_TRANSITIONS=270} [2024-05-12 13:35:17,138 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-05-12 13:35:17,138 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 270 transitions, 3797 flow [2024-05-12 13:35:17,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:17,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:17,138 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 13:35:17,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 13:35:17,139 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:35:17,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:17,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1140553936, now seen corresponding path program 9 times [2024-05-12 13:35:17,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:17,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971426095] [2024-05-12 13:35:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:17,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:18,752 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 13:35:18,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971426095] [2024-05-12 13:35:18,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971426095] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:18,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:18,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:18,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460538027] [2024-05-12 13:35:18,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:18,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:18,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:18,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:18,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:18,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:18,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 270 transitions, 3797 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:18,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:18,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:18,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:20,993 INFO L124 PetriNetUnfolderBase]: 3775/10387 cut-off events. [2024-05-12 13:35:20,993 INFO L125 PetriNetUnfolderBase]: For 127021/127263 co-relation queries the response was YES. [2024-05-12 13:35:21,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38287 conditions, 10387 events. 3775/10387 cut-off events. For 127021/127263 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 119932 event pairs, 2197 based on Foata normal form. 49/9401 useless extension candidates. Maximal degree in co-relation 38129. Up to 6343 conditions per place. [2024-05-12 13:35:21,176 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 260 selfloop transitions, 46 changer transitions 0/319 dead transitions. [2024-05-12 13:35:21,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 319 transitions, 4649 flow [2024-05-12 13:35:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:35:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:35:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-05-12 13:35:21,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153508771929824 [2024-05-12 13:35:21,178 INFO L175 Difference]: Start difference. First operand has 356 places, 270 transitions, 3797 flow. Second operand 12 states and 235 transitions. [2024-05-12 13:35:21,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 319 transitions, 4649 flow [2024-05-12 13:35:22,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 319 transitions, 4595 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 13:35:22,432 INFO L231 Difference]: Finished difference. Result has 361 places, 270 transitions, 3839 flow [2024-05-12 13:35:22,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3743, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3839, PETRI_PLACES=361, PETRI_TRANSITIONS=270} [2024-05-12 13:35:22,433 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-05-12 13:35:22,433 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 270 transitions, 3839 flow [2024-05-12 13:35:22,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:22,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:22,433 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 13:35:22,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 13:35:22,433 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:35:22,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:22,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1293037296, now seen corresponding path program 10 times [2024-05-12 13:35:22,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:22,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440320916] [2024-05-12 13:35:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:22,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:23,817 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 13:35:23,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440320916] [2024-05-12 13:35:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440320916] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:23,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:23,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644765825] [2024-05-12 13:35:23,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:23,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:23,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:23,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:23,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:23,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:23,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 270 transitions, 3839 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:23,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:23,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:23,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:26,126 INFO L124 PetriNetUnfolderBase]: 3850/10638 cut-off events. [2024-05-12 13:35:26,126 INFO L125 PetriNetUnfolderBase]: For 145389/145627 co-relation queries the response was YES. [2024-05-12 13:35:26,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39283 conditions, 10638 events. 3850/10638 cut-off events. For 145389/145627 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 123538 event pairs, 2086 based on Foata normal form. 50/9683 useless extension candidates. Maximal degree in co-relation 39124. Up to 5035 conditions per place. [2024-05-12 13:35:26,274 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 242 selfloop transitions, 55 changer transitions 0/310 dead transitions. [2024-05-12 13:35:26,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 310 transitions, 4785 flow [2024-05-12 13:35:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:35:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:35:26,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-05-12 13:35:26,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210526315789473 [2024-05-12 13:35:26,275 INFO L175 Difference]: Start difference. First operand has 361 places, 270 transitions, 3839 flow. Second operand 10 states and 198 transitions. [2024-05-12 13:35:26,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 310 transitions, 4785 flow [2024-05-12 13:35:27,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 310 transitions, 4710 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:35:27,458 INFO L231 Difference]: Finished difference. Result has 362 places, 270 transitions, 3888 flow [2024-05-12 13:35:27,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3764, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3888, PETRI_PLACES=362, PETRI_TRANSITIONS=270} [2024-05-12 13:35:27,459 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 320 predicate places. [2024-05-12 13:35:27,459 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 270 transitions, 3888 flow [2024-05-12 13:35:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:27,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:27,459 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 13:35:27,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-05-12 13:35:27,460 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:35:27,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1293028926, now seen corresponding path program 11 times [2024-05-12 13:35:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:27,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721554915] [2024-05-12 13:35:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:29,296 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 13:35:29,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:29,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721554915] [2024-05-12 13:35:29,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721554915] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:29,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:29,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:29,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334921915] [2024-05-12 13:35:29,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:29,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:29,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:29,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:29,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:29,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:29,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 270 transitions, 3888 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:29,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:29,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:29,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:31,887 INFO L124 PetriNetUnfolderBase]: 3879/10643 cut-off events. [2024-05-12 13:35:31,887 INFO L125 PetriNetUnfolderBase]: For 150126/150357 co-relation queries the response was YES. [2024-05-12 13:35:31,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39656 conditions, 10643 events. 3879/10643 cut-off events. For 150126/150357 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 123473 event pairs, 2167 based on Foata normal form. 50/9660 useless extension candidates. Maximal degree in co-relation 39496. Up to 6040 conditions per place. [2024-05-12 13:35:32,011 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 242 selfloop transitions, 59 changer transitions 0/314 dead transitions. [2024-05-12 13:35:32,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 314 transitions, 4708 flow [2024-05-12 13:35:32,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:35:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:35:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-05-12 13:35:32,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119617224880383 [2024-05-12 13:35:32,012 INFO L175 Difference]: Start difference. First operand has 362 places, 270 transitions, 3888 flow. Second operand 11 states and 214 transitions. [2024-05-12 13:35:32,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 314 transitions, 4708 flow [2024-05-12 13:35:33,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 314 transitions, 4580 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-05-12 13:35:33,120 INFO L231 Difference]: Finished difference. Result has 362 places, 270 transitions, 3884 flow [2024-05-12 13:35:33,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3760, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3884, PETRI_PLACES=362, PETRI_TRANSITIONS=270} [2024-05-12 13:35:33,121 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 320 predicate places. [2024-05-12 13:35:33,121 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 270 transitions, 3884 flow [2024-05-12 13:35:33,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:33,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:33,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:33,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-05-12 13:35:33,122 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:35:33,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:33,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2026953352, now seen corresponding path program 12 times [2024-05-12 13:35:33,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:33,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816898665] [2024-05-12 13:35:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:33,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:34,724 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 13:35:34,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:34,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816898665] [2024-05-12 13:35:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816898665] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:34,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:34,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:34,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957656580] [2024-05-12 13:35:34,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:34,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:34,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:34,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:34,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:34,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 270 transitions, 3884 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:34,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:34,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:34,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:37,248 INFO L124 PetriNetUnfolderBase]: 3874/10665 cut-off events. [2024-05-12 13:35:37,248 INFO L125 PetriNetUnfolderBase]: For 132146/132379 co-relation queries the response was YES. [2024-05-12 13:35:37,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39230 conditions, 10665 events. 3874/10665 cut-off events. For 132146/132379 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 123976 event pairs, 2212 based on Foata normal form. 51/9668 useless extension candidates. Maximal degree in co-relation 39071. Up to 6030 conditions per place. [2024-05-12 13:35:37,402 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 242 selfloop transitions, 59 changer transitions 0/314 dead transitions. [2024-05-12 13:35:37,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 314 transitions, 4704 flow [2024-05-12 13:35:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:35:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:35:37,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-05-12 13:35:37,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143540669856459 [2024-05-12 13:35:37,403 INFO L175 Difference]: Start difference. First operand has 362 places, 270 transitions, 3884 flow. Second operand 11 states and 215 transitions. [2024-05-12 13:35:37,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 314 transitions, 4704 flow [2024-05-12 13:35:38,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 314 transitions, 4606 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-05-12 13:35:38,548 INFO L231 Difference]: Finished difference. Result has 363 places, 270 transitions, 3910 flow [2024-05-12 13:35:38,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3786, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3910, PETRI_PLACES=363, PETRI_TRANSITIONS=270} [2024-05-12 13:35:38,548 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-05-12 13:35:38,549 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 270 transitions, 3910 flow [2024-05-12 13:35:38,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:38,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:38,549 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 13:35:38,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-05-12 13:35:38,549 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:35:38,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1073529372, now seen corresponding path program 13 times [2024-05-12 13:35:38,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:38,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789973633] [2024-05-12 13:35:38,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:38,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:40,657 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 13:35:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789973633] [2024-05-12 13:35:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789973633] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:40,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358275102] [2024-05-12 13:35:40,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:40,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:40,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:40,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 270 transitions, 3910 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:40,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:40,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:40,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:43,024 INFO L124 PetriNetUnfolderBase]: 3896/10563 cut-off events. [2024-05-12 13:35:43,024 INFO L125 PetriNetUnfolderBase]: For 127716/127960 co-relation queries the response was YES. [2024-05-12 13:35:43,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39381 conditions, 10563 events. 3896/10563 cut-off events. For 127716/127960 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 122043 event pairs, 1710 based on Foata normal form. 50/9730 useless extension candidates. Maximal degree in co-relation 39223. Up to 3288 conditions per place. [2024-05-12 13:35:43,175 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 235 selfloop transitions, 70 changer transitions 0/318 dead transitions. [2024-05-12 13:35:43,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 318 transitions, 4906 flow [2024-05-12 13:35:43,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:35:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:35:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-05-12 13:35:43,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311004784688995 [2024-05-12 13:35:43,176 INFO L175 Difference]: Start difference. First operand has 363 places, 270 transitions, 3910 flow. Second operand 11 states and 222 transitions. [2024-05-12 13:35:43,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 318 transitions, 4906 flow [2024-05-12 13:35:44,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 318 transitions, 4800 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-05-12 13:35:44,260 INFO L231 Difference]: Finished difference. Result has 364 places, 270 transitions, 3952 flow [2024-05-12 13:35:44,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3808, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3952, PETRI_PLACES=364, PETRI_TRANSITIONS=270} [2024-05-12 13:35:44,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 322 predicate places. [2024-05-12 13:35:44,261 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 270 transitions, 3952 flow [2024-05-12 13:35:44,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:44,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:44,262 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 13:35:44,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-05-12 13:35:44,262 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:35:44,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:44,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1081572942, now seen corresponding path program 14 times [2024-05-12 13:35:44,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:44,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620449331] [2024-05-12 13:35:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:44,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:46,064 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 13:35:46,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:46,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620449331] [2024-05-12 13:35:46,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620449331] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:46,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:46,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:46,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372680985] [2024-05-12 13:35:46,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:46,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:46,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:46,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:46,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:46,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:46,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 270 transitions, 3952 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:46,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:46,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:46,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:48,472 INFO L124 PetriNetUnfolderBase]: 3938/10710 cut-off events. [2024-05-12 13:35:48,472 INFO L125 PetriNetUnfolderBase]: For 126488/126740 co-relation queries the response was YES. [2024-05-12 13:35:48,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39920 conditions, 10710 events. 3938/10710 cut-off events. For 126488/126740 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 123927 event pairs, 1357 based on Foata normal form. 51/9852 useless extension candidates. Maximal degree in co-relation 39763. Up to 4979 conditions per place. [2024-05-12 13:35:48,697 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 215 selfloop transitions, 88 changer transitions 0/316 dead transitions. [2024-05-12 13:35:48,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 316 transitions, 4816 flow [2024-05-12 13:35:48,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:35:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:35:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-05-12 13:35:48,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:35:48,701 INFO L175 Difference]: Start difference. First operand has 364 places, 270 transitions, 3952 flow. Second operand 11 states and 220 transitions. [2024-05-12 13:35:48,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 316 transitions, 4816 flow [2024-05-12 13:35:49,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 316 transitions, 4675 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-05-12 13:35:49,973 INFO L231 Difference]: Finished difference. Result has 366 places, 271 transitions, 4073 flow [2024-05-12 13:35:49,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3811, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4073, PETRI_PLACES=366, PETRI_TRANSITIONS=271} [2024-05-12 13:35:49,974 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-05-12 13:35:49,974 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 271 transitions, 4073 flow [2024-05-12 13:35:49,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:49,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:49,974 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 13:35:49,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-05-12 13:35:49,975 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:35:49,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash 313710420, now seen corresponding path program 15 times [2024-05-12 13:35:49,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:49,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716657480] [2024-05-12 13:35:49,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:49,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:51,757 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 13:35:51,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716657480] [2024-05-12 13:35:51,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716657480] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:51,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:51,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:51,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724482573] [2024-05-12 13:35:51,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:51,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:51,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:51,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:51,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:51,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:51,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 271 transitions, 4073 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:51,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:51,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:51,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:54,264 INFO L124 PetriNetUnfolderBase]: 3973/10913 cut-off events. [2024-05-12 13:35:54,264 INFO L125 PetriNetUnfolderBase]: For 133457/133713 co-relation queries the response was YES. [2024-05-12 13:35:54,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40951 conditions, 10913 events. 3973/10913 cut-off events. For 133457/133713 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 127394 event pairs, 2173 based on Foata normal form. 49/9953 useless extension candidates. Maximal degree in co-relation 40793. Up to 5705 conditions per place. [2024-05-12 13:35:54,408 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 253 selfloop transitions, 48 changer transitions 0/314 dead transitions. [2024-05-12 13:35:54,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 314 transitions, 5035 flow [2024-05-12 13:35:54,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:35:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:35:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-05-12 13:35:54,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342105263157895 [2024-05-12 13:35:54,410 INFO L175 Difference]: Start difference. First operand has 366 places, 271 transitions, 4073 flow. Second operand 10 states and 203 transitions. [2024-05-12 13:35:54,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 314 transitions, 5035 flow [2024-05-12 13:35:55,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 314 transitions, 4874 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-05-12 13:35:55,603 INFO L231 Difference]: Finished difference. Result has 368 places, 271 transitions, 4015 flow [2024-05-12 13:35:55,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3914, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4015, PETRI_PLACES=368, PETRI_TRANSITIONS=271} [2024-05-12 13:35:55,604 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-05-12 13:35:55,604 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 271 transitions, 4015 flow [2024-05-12 13:35:55,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:55,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:55,604 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 13:35:55,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-05-12 13:35:55,604 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:35:55,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:55,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1303217982, now seen corresponding path program 16 times [2024-05-12 13:35:55,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:55,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194325111] [2024-05-12 13:35:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:55,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:57,487 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 13:35:57,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:57,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194325111] [2024-05-12 13:35:57,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194325111] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:57,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:57,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:35:57,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407138228] [2024-05-12 13:35:57,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:57,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:35:57,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:35:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:35:57,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:35:57,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 271 transitions, 4015 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:35:57,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:57,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:35:57,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:00,038 INFO L124 PetriNetUnfolderBase]: 3970/11005 cut-off events. [2024-05-12 13:36:00,039 INFO L125 PetriNetUnfolderBase]: For 109596/109852 co-relation queries the response was YES. [2024-05-12 13:36:00,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39601 conditions, 11005 events. 3970/11005 cut-off events. For 109596/109852 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 128978 event pairs, 2243 based on Foata normal form. 49/9983 useless extension candidates. Maximal degree in co-relation 39444. Up to 6441 conditions per place. [2024-05-12 13:36:00,239 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 251 selfloop transitions, 53 changer transitions 0/317 dead transitions. [2024-05-12 13:36:00,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 317 transitions, 4851 flow [2024-05-12 13:36:00,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-05-12 13:36:00,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191387559808612 [2024-05-12 13:36:00,246 INFO L175 Difference]: Start difference. First operand has 368 places, 271 transitions, 4015 flow. Second operand 11 states and 217 transitions. [2024-05-12 13:36:00,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 317 transitions, 4851 flow [2024-05-12 13:36:01,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 317 transitions, 4755 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-05-12 13:36:01,253 INFO L231 Difference]: Finished difference. Result has 370 places, 271 transitions, 4030 flow [2024-05-12 13:36:01,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3919, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4030, PETRI_PLACES=370, PETRI_TRANSITIONS=271} [2024-05-12 13:36:01,254 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-05-12 13:36:01,254 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 271 transitions, 4030 flow [2024-05-12 13:36:01,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:01,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:01,254 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 13:36:01,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-05-12 13:36:01,254 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:01,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:01,255 INFO L85 PathProgramCache]: Analyzing trace with hash 535355460, now seen corresponding path program 17 times [2024-05-12 13:36:01,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:01,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940901937] [2024-05-12 13:36:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:01,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:03,052 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 13:36:03,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:03,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940901937] [2024-05-12 13:36:03,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940901937] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:36:03,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666871145] [2024-05-12 13:36:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:03,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:36:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:36:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:36:03,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:03,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 271 transitions, 4030 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:03,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:03,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:03,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:05,532 INFO L124 PetriNetUnfolderBase]: 3957/10803 cut-off events. [2024-05-12 13:36:05,532 INFO L125 PetriNetUnfolderBase]: For 91788/92050 co-relation queries the response was YES. [2024-05-12 13:36:05,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39119 conditions, 10803 events. 3957/10803 cut-off events. For 91788/92050 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 125496 event pairs, 1332 based on Foata normal form. 49/9940 useless extension candidates. Maximal degree in co-relation 38962. Up to 5024 conditions per place. [2024-05-12 13:36:05,681 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 209 selfloop transitions, 90 changer transitions 0/312 dead transitions. [2024-05-12 13:36:05,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 312 transitions, 4836 flow [2024-05-12 13:36:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-05-12 13:36:05,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167464114832536 [2024-05-12 13:36:05,682 INFO L175 Difference]: Start difference. First operand has 370 places, 271 transitions, 4030 flow. Second operand 11 states and 216 transitions. [2024-05-12 13:36:05,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 312 transitions, 4836 flow [2024-05-12 13:36:06,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 312 transitions, 4676 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-05-12 13:36:06,575 INFO L231 Difference]: Finished difference. Result has 371 places, 271 transitions, 4054 flow [2024-05-12 13:36:06,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3870, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4054, PETRI_PLACES=371, PETRI_TRANSITIONS=271} [2024-05-12 13:36:06,576 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 329 predicate places. [2024-05-12 13:36:06,576 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 271 transitions, 4054 flow [2024-05-12 13:36:06,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:06,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:06,576 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 13:36:06,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-05-12 13:36:06,576 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:06,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1759147952, now seen corresponding path program 18 times [2024-05-12 13:36:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504495422] [2024-05-12 13:36:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:08,305 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 13:36:08,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:08,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504495422] [2024-05-12 13:36:08,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504495422] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:08,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:08,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:36:08,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071882680] [2024-05-12 13:36:08,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:08,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:36:08,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:08,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:36:08,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:36:08,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:08,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 271 transitions, 4054 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:08,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:08,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:08,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:10,640 INFO L124 PetriNetUnfolderBase]: 3985/11085 cut-off events. [2024-05-12 13:36:10,640 INFO L125 PetriNetUnfolderBase]: For 96110/96358 co-relation queries the response was YES. [2024-05-12 13:36:10,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39843 conditions, 11085 events. 3985/11085 cut-off events. For 96110/96358 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 130283 event pairs, 2384 based on Foata normal form. 52/10063 useless extension candidates. Maximal degree in co-relation 39686. Up to 6685 conditions per place. [2024-05-12 13:36:10,782 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 250 selfloop transitions, 52 changer transitions 0/315 dead transitions. [2024-05-12 13:36:10,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 315 transitions, 4886 flow [2024-05-12 13:36:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:10,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-05-12 13:36:10,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239234449760766 [2024-05-12 13:36:10,783 INFO L175 Difference]: Start difference. First operand has 371 places, 271 transitions, 4054 flow. Second operand 11 states and 219 transitions. [2024-05-12 13:36:10,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 315 transitions, 4886 flow [2024-05-12 13:36:11,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 315 transitions, 4729 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 13:36:11,575 INFO L231 Difference]: Finished difference. Result has 374 places, 271 transitions, 4004 flow [2024-05-12 13:36:11,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3897, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4004, PETRI_PLACES=374, PETRI_TRANSITIONS=271} [2024-05-12 13:36:11,575 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-05-12 13:36:11,575 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 271 transitions, 4004 flow [2024-05-12 13:36:11,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:11,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:11,576 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 13:36:11,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-05-12 13:36:11,576 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:11,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:11,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1750873742, now seen corresponding path program 19 times [2024-05-12 13:36:11,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:11,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993242428] [2024-05-12 13:36:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:11,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:13,583 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 13:36:13,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:13,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993242428] [2024-05-12 13:36:13,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993242428] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:13,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:13,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:36:13,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747380606] [2024-05-12 13:36:13,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:13,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:36:13,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:36:13,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:36:13,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:13,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 271 transitions, 4004 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:13,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:13,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:13,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:16,158 INFO L124 PetriNetUnfolderBase]: 4019/11235 cut-off events. [2024-05-12 13:36:16,158 INFO L125 PetriNetUnfolderBase]: For 93529/93782 co-relation queries the response was YES. [2024-05-12 13:36:16,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39730 conditions, 11235 events. 4019/11235 cut-off events. For 93529/93782 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 132679 event pairs, 2437 based on Foata normal form. 51/10183 useless extension candidates. Maximal degree in co-relation 39573. Up to 6753 conditions per place. [2024-05-12 13:36:16,309 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 251 selfloop transitions, 51 changer transitions 0/315 dead transitions. [2024-05-12 13:36:16,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 315 transitions, 4836 flow [2024-05-12 13:36:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-05-12 13:36:16,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:36:16,310 INFO L175 Difference]: Start difference. First operand has 374 places, 271 transitions, 4004 flow. Second operand 11 states and 220 transitions. [2024-05-12 13:36:16,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 315 transitions, 4836 flow [2024-05-12 13:36:17,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 315 transitions, 4736 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:36:17,054 INFO L231 Difference]: Finished difference. Result has 376 places, 271 transitions, 4009 flow [2024-05-12 13:36:17,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4009, PETRI_PLACES=376, PETRI_TRANSITIONS=271} [2024-05-12 13:36:17,054 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 334 predicate places. [2024-05-12 13:36:17,054 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 271 transitions, 4009 flow [2024-05-12 13:36:17,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:17,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:17,055 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 13:36:17,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-05-12 13:36:17,055 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:17,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1996965986, now seen corresponding path program 20 times [2024-05-12 13:36:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:17,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595980107] [2024-05-12 13:36:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:18,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:18,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595980107] [2024-05-12 13:36:18,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595980107] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:18,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:18,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:36:18,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036088255] [2024-05-12 13:36:18,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:18,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:36:18,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:18,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:36:18,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:36:18,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:18,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 271 transitions, 4009 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:18,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:18,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:18,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:21,121 INFO L124 PetriNetUnfolderBase]: 4091/11490 cut-off events. [2024-05-12 13:36:21,121 INFO L125 PetriNetUnfolderBase]: For 110407/110659 co-relation queries the response was YES. [2024-05-12 13:36:21,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40703 conditions, 11490 events. 4091/11490 cut-off events. For 110407/110659 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 136596 event pairs, 2973 based on Foata normal form. 53/10370 useless extension candidates. Maximal degree in co-relation 40545. Up to 7253 conditions per place. [2024-05-12 13:36:21,381 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 275 selfloop transitions, 16 changer transitions 0/304 dead transitions. [2024-05-12 13:36:21,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 304 transitions, 4921 flow [2024-05-12 13:36:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:21,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-05-12 13:36:21,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-05-12 13:36:21,382 INFO L175 Difference]: Start difference. First operand has 376 places, 271 transitions, 4009 flow. Second operand 11 states and 202 transitions. [2024-05-12 13:36:21,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 304 transitions, 4921 flow [2024-05-12 13:36:22,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 304 transitions, 4820 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:36:22,382 INFO L231 Difference]: Finished difference. Result has 378 places, 271 transitions, 3943 flow [2024-05-12 13:36:22,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3908, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3943, PETRI_PLACES=378, PETRI_TRANSITIONS=271} [2024-05-12 13:36:22,382 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 336 predicate places. [2024-05-12 13:36:22,382 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 271 transitions, 3943 flow [2024-05-12 13:36:22,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:22,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:22,383 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 13:36:22,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-05-12 13:36:22,383 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:22,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:22,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1751104382, now seen corresponding path program 21 times [2024-05-12 13:36:22,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:22,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875869193] [2024-05-12 13:36:22,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:22,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:24,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:24,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875869193] [2024-05-12 13:36:24,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875869193] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:24,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:24,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:36:24,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091339502] [2024-05-12 13:36:24,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:24,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:36:24,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:36:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:36:24,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:24,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 271 transitions, 3943 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:24,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:24,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:24,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:26,800 INFO L124 PetriNetUnfolderBase]: 4132/11596 cut-off events. [2024-05-12 13:36:26,800 INFO L125 PetriNetUnfolderBase]: For 110565/110813 co-relation queries the response was YES. [2024-05-12 13:36:26,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40733 conditions, 11596 events. 4132/11596 cut-off events. For 110565/110813 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 137933 event pairs, 2527 based on Foata normal form. 52/10503 useless extension candidates. Maximal degree in co-relation 40574. Up to 6968 conditions per place. [2024-05-12 13:36:26,940 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 256 selfloop transitions, 50 changer transitions 0/319 dead transitions. [2024-05-12 13:36:26,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 319 transitions, 4799 flow [2024-05-12 13:36:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-05-12 13:36:26,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358851674641149 [2024-05-12 13:36:26,941 INFO L175 Difference]: Start difference. First operand has 378 places, 271 transitions, 3943 flow. Second operand 11 states and 224 transitions. [2024-05-12 13:36:26,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 319 transitions, 4799 flow [2024-05-12 13:36:27,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 319 transitions, 4771 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:36:27,778 INFO L231 Difference]: Finished difference. Result has 381 places, 271 transitions, 4018 flow [2024-05-12 13:36:27,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3915, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4018, PETRI_PLACES=381, PETRI_TRANSITIONS=271} [2024-05-12 13:36:27,778 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-05-12 13:36:27,778 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 271 transitions, 4018 flow [2024-05-12 13:36:27,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:27,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:27,788 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 13:36:27,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-05-12 13:36:27,789 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:27,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:27,789 INFO L85 PathProgramCache]: Analyzing trace with hash 854172508, now seen corresponding path program 22 times [2024-05-12 13:36:27,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:27,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500196339] [2024-05-12 13:36:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:27,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:29,887 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 13:36:29,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:29,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500196339] [2024-05-12 13:36:29,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500196339] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:29,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:29,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:36:29,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690507295] [2024-05-12 13:36:29,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:29,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:36:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:29,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:36:29,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:36:30,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:30,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 271 transitions, 4018 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:30,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:30,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:30,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:32,383 INFO L124 PetriNetUnfolderBase]: 4165/11696 cut-off events. [2024-05-12 13:36:32,383 INFO L125 PetriNetUnfolderBase]: For 114408/114676 co-relation queries the response was YES. [2024-05-12 13:36:32,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41256 conditions, 11696 events. 4165/11696 cut-off events. For 114408/114676 co-relation queries the response was YES. Maximal size of possible extension queue 959. Compared 139605 event pairs, 1409 based on Foata normal form. 52/10748 useless extension candidates. Maximal degree in co-relation 41096. Up to 5044 conditions per place. [2024-05-12 13:36:32,571 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 197 selfloop transitions, 106 changer transitions 0/316 dead transitions. [2024-05-12 13:36:32,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 316 transitions, 4867 flow [2024-05-12 13:36:32,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-05-12 13:36:32,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287081339712919 [2024-05-12 13:36:32,572 INFO L175 Difference]: Start difference. First operand has 381 places, 271 transitions, 4018 flow. Second operand 11 states and 221 transitions. [2024-05-12 13:36:32,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 316 transitions, 4867 flow [2024-05-12 13:36:33,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 316 transitions, 4768 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:36:33,559 INFO L231 Difference]: Finished difference. Result has 383 places, 271 transitions, 4134 flow [2024-05-12 13:36:33,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3919, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4134, PETRI_PLACES=383, PETRI_TRANSITIONS=271} [2024-05-12 13:36:33,560 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 341 predicate places. [2024-05-12 13:36:33,560 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 271 transitions, 4134 flow [2024-05-12 13:36:33,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:33,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:33,561 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 13:36:33,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-05-12 13:36:33,561 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:33,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:33,561 INFO L85 PathProgramCache]: Analyzing trace with hash -594368322, now seen corresponding path program 23 times [2024-05-12 13:36:33,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:33,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447148714] [2024-05-12 13:36:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:33,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:35,175 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 13:36:35,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:35,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447148714] [2024-05-12 13:36:35,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447148714] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:35,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:35,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:36:35,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847550246] [2024-05-12 13:36:35,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:35,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:36:35,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:35,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:36:35,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:36:35,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:35,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 271 transitions, 4134 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:35,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:35,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:35,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:37,615 INFO L124 PetriNetUnfolderBase]: 4206/11825 cut-off events. [2024-05-12 13:36:37,615 INFO L125 PetriNetUnfolderBase]: For 119311/119573 co-relation queries the response was YES. [2024-05-12 13:36:37,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42227 conditions, 11825 events. 4206/11825 cut-off events. For 119311/119573 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 141269 event pairs, 2559 based on Foata normal form. 52/10723 useless extension candidates. Maximal degree in co-relation 42066. Up to 6917 conditions per place. [2024-05-12 13:36:37,780 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 257 selfloop transitions, 50 changer transitions 0/320 dead transitions. [2024-05-12 13:36:37,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 320 transitions, 4994 flow [2024-05-12 13:36:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-05-12 13:36:37,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382775119617225 [2024-05-12 13:36:37,781 INFO L175 Difference]: Start difference. First operand has 383 places, 271 transitions, 4134 flow. Second operand 11 states and 225 transitions. [2024-05-12 13:36:37,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 320 transitions, 4994 flow [2024-05-12 13:36:38,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 320 transitions, 4783 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:36:38,829 INFO L231 Difference]: Finished difference. Result has 385 places, 271 transitions, 4026 flow [2024-05-12 13:36:38,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4026, PETRI_PLACES=385, PETRI_TRANSITIONS=271} [2024-05-12 13:36:38,830 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 343 predicate places. [2024-05-12 13:36:38,830 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 271 transitions, 4026 flow [2024-05-12 13:36:38,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:38,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:38,830 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 13:36:38,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-05-12 13:36:38,831 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:38,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:38,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1159212944, now seen corresponding path program 24 times [2024-05-12 13:36:38,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:38,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592621005] [2024-05-12 13:36:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:38,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:40,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:40,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592621005] [2024-05-12 13:36:40,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592621005] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:40,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:40,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:36:40,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832659927] [2024-05-12 13:36:40,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:40,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:36:40,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:40,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:36:40,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:36:40,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:40,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 271 transitions, 4026 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:40,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:40,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:40,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:43,049 INFO L124 PetriNetUnfolderBase]: 4282/12087 cut-off events. [2024-05-12 13:36:43,049 INFO L125 PetriNetUnfolderBase]: For 134868/135138 co-relation queries the response was YES. [2024-05-12 13:36:43,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42597 conditions, 12087 events. 4282/12087 cut-off events. For 134868/135138 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 145391 event pairs, 3113 based on Foata normal form. 55/10911 useless extension candidates. Maximal degree in co-relation 42435. Up to 7297 conditions per place. [2024-05-12 13:36:43,324 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 284 selfloop transitions, 17 changer transitions 0/314 dead transitions. [2024-05-12 13:36:43,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 314 transitions, 5012 flow [2024-05-12 13:36:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:36:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:36:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-05-12 13:36:43,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2024-05-12 13:36:43,325 INFO L175 Difference]: Start difference. First operand has 385 places, 271 transitions, 4026 flow. Second operand 12 states and 226 transitions. [2024-05-12 13:36:43,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 314 transitions, 5012 flow [2024-05-12 13:36:44,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 314 transitions, 4915 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 13:36:44,756 INFO L231 Difference]: Finished difference. Result has 389 places, 271 transitions, 3966 flow [2024-05-12 13:36:44,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3929, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3966, PETRI_PLACES=389, PETRI_TRANSITIONS=271} [2024-05-12 13:36:44,757 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-05-12 13:36:44,757 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 271 transitions, 3966 flow [2024-05-12 13:36:44,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:44,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:44,757 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 13:36:44,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-05-12 13:36:44,758 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:44,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:44,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2039412392, now seen corresponding path program 25 times [2024-05-12 13:36:44,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:44,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379179163] [2024-05-12 13:36:44,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:44,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:46,504 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 13:36:46,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:46,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379179163] [2024-05-12 13:36:46,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379179163] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:46,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:46,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:36:46,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442716362] [2024-05-12 13:36:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:46,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:36:46,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:46,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:36:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:36:46,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:46,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 271 transitions, 3966 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:46,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:46,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:46,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:49,009 INFO L124 PetriNetUnfolderBase]: 4279/12094 cut-off events. [2024-05-12 13:36:49,010 INFO L125 PetriNetUnfolderBase]: For 117564/117827 co-relation queries the response was YES. [2024-05-12 13:36:49,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41988 conditions, 12094 events. 4279/12094 cut-off events. For 117564/117827 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 145526 event pairs, 3151 based on Foata normal form. 55/10895 useless extension candidates. Maximal degree in co-relation 41825. Up to 7706 conditions per place. [2024-05-12 13:36:49,175 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 269 selfloop transitions, 16 changer transitions 0/298 dead transitions. [2024-05-12 13:36:49,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 298 transitions, 4688 flow [2024-05-12 13:36:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-05-12 13:36:49,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-05-12 13:36:49,176 INFO L175 Difference]: Start difference. First operand has 389 places, 271 transitions, 3966 flow. Second operand 11 states and 196 transitions. [2024-05-12 13:36:49,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 298 transitions, 4688 flow [2024-05-12 13:36:50,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 298 transitions, 4632 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-05-12 13:36:50,139 INFO L231 Difference]: Finished difference. Result has 389 places, 271 transitions, 3945 flow [2024-05-12 13:36:50,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3945, PETRI_PLACES=389, PETRI_TRANSITIONS=271} [2024-05-12 13:36:50,140 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-05-12 13:36:50,140 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 271 transitions, 3945 flow [2024-05-12 13:36:50,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:50,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:50,140 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 13:36:50,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-05-12 13:36:50,141 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:50,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1826665356, now seen corresponding path program 26 times [2024-05-12 13:36:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:50,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614417144] [2024-05-12 13:36:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:50,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:51,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614417144] [2024-05-12 13:36:51,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614417144] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:51,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:51,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:36:51,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710384005] [2024-05-12 13:36:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:51,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:36:51,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:36:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:36:51,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:51,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 271 transitions, 3945 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 13:36:51,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:51,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:51,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:54,108 INFO L124 PetriNetUnfolderBase]: 4280/12068 cut-off events. [2024-05-12 13:36:54,108 INFO L125 PetriNetUnfolderBase]: For 100849/101112 co-relation queries the response was YES. [2024-05-12 13:36:54,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41428 conditions, 12068 events. 4280/12068 cut-off events. For 100849/101112 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 145033 event pairs, 3056 based on Foata normal form. 55/10906 useless extension candidates. Maximal degree in co-relation 41267. Up to 7297 conditions per place. [2024-05-12 13:36:54,275 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 273 selfloop transitions, 19 changer transitions 0/305 dead transitions. [2024-05-12 13:36:54,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 305 transitions, 4701 flow [2024-05-12 13:36:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:36:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:36:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-05-12 13:36:54,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:36:54,277 INFO L175 Difference]: Start difference. First operand has 389 places, 271 transitions, 3945 flow. Second operand 10 states and 190 transitions. [2024-05-12 13:36:54,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 305 transitions, 4701 flow [2024-05-12 13:36:55,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 305 transitions, 4670 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:36:55,316 INFO L231 Difference]: Finished difference. Result has 390 places, 271 transitions, 3959 flow [2024-05-12 13:36:55,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3914, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3959, PETRI_PLACES=390, PETRI_TRANSITIONS=271} [2024-05-12 13:36:55,316 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-05-12 13:36:55,316 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 271 transitions, 3959 flow [2024-05-12 13:36:55,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 13:36:55,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:55,319 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 13:36:55,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-05-12 13:36:55,319 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:36:55,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:55,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1454432144, now seen corresponding path program 27 times [2024-05-12 13:36:55,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:55,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748514902] [2024-05-12 13:36:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:55,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:56,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:56,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748514902] [2024-05-12 13:36:56,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748514902] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:56,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:56,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:36:56,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529437040] [2024-05-12 13:36:56,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:56,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:36:56,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:56,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:36:56,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:36:57,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:36:57,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 271 transitions, 3959 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:36:57,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:57,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:36:57,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:59,397 INFO L124 PetriNetUnfolderBase]: 4311/11927 cut-off events. [2024-05-12 13:36:59,397 INFO L125 PetriNetUnfolderBase]: For 99365/99642 co-relation queries the response was YES. [2024-05-12 13:36:59,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41508 conditions, 11927 events. 4311/11927 cut-off events. For 99365/99642 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 142132 event pairs, 1375 based on Foata normal form. 53/10998 useless extension candidates. Maximal degree in co-relation 41346. Up to 5040 conditions per place. [2024-05-12 13:36:59,630 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 199 selfloop transitions, 107 changer transitions 0/319 dead transitions. [2024-05-12 13:36:59,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 319 transitions, 4992 flow [2024-05-12 13:36:59,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-05-12 13:36:59,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 13:36:59,632 INFO L175 Difference]: Start difference. First operand has 390 places, 271 transitions, 3959 flow. Second operand 11 states and 220 transitions. [2024-05-12 13:36:59,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 319 transitions, 4992 flow [2024-05-12 13:37:00,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 319 transitions, 4944 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-05-12 13:37:00,677 INFO L231 Difference]: Finished difference. Result has 390 places, 271 transitions, 4132 flow [2024-05-12 13:37:00,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3915, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4132, PETRI_PLACES=390, PETRI_TRANSITIONS=271} [2024-05-12 13:37:00,677 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-05-12 13:37:00,677 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 271 transitions, 4132 flow [2024-05-12 13:37:00,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:37:00,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:00,678 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 13:37:00,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-05-12 13:37:00,678 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:37:00,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:00,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1454671154, now seen corresponding path program 28 times [2024-05-12 13:37:00,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:00,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201012351] [2024-05-12 13:37:00,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:00,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:03,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201012351] [2024-05-12 13:37:03,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201012351] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:03,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:03,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:37:03,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991608138] [2024-05-12 13:37:03,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:03,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:37:03,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:03,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:37:03,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:37:03,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:37:03,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 271 transitions, 4132 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:37:03,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:03,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:37:03,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:06,315 INFO L124 PetriNetUnfolderBase]: 4383/12181 cut-off events. [2024-05-12 13:37:06,315 INFO L125 PetriNetUnfolderBase]: For 86006/86272 co-relation queries the response was YES. [2024-05-12 13:37:06,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42292 conditions, 12181 events. 4383/12181 cut-off events. For 86006/86272 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 145571 event pairs, 2325 based on Foata normal form. 54/10967 useless extension candidates. Maximal degree in co-relation 42131. Up to 6089 conditions per place. [2024-05-12 13:37:06,479 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 204 selfloop transitions, 95 changer transitions 0/312 dead transitions. [2024-05-12 13:37:06,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 312 transitions, 4955 flow [2024-05-12 13:37:06,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:37:06,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:37:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-05-12 13:37:06,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191387559808612 [2024-05-12 13:37:06,480 INFO L175 Difference]: Start difference. First operand has 390 places, 271 transitions, 4132 flow. Second operand 11 states and 217 transitions. [2024-05-12 13:37:06,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 312 transitions, 4955 flow [2024-05-12 13:37:07,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 312 transitions, 4801 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-05-12 13:37:07,183 INFO L231 Difference]: Finished difference. Result has 394 places, 272 transitions, 4196 flow [2024-05-12 13:37:07,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3978, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4196, PETRI_PLACES=394, PETRI_TRANSITIONS=272} [2024-05-12 13:37:07,184 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 352 predicate places. [2024-05-12 13:37:07,184 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 272 transitions, 4196 flow [2024-05-12 13:37:07,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:37:07,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:07,184 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 13:37:07,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-05-12 13:37:07,185 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:37:07,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1529459342, now seen corresponding path program 29 times [2024-05-12 13:37:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722972507] [2024-05-12 13:37:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:09,007 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 13:37:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:09,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722972507] [2024-05-12 13:37:09,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722972507] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:09,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:09,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:37:09,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842281825] [2024-05-12 13:37:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:09,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:37:09,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:37:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:37:09,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:37:09,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 272 transitions, 4196 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:37:09,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:09,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:37:09,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:11,667 INFO L124 PetriNetUnfolderBase]: 4337/12243 cut-off events. [2024-05-12 13:37:11,668 INFO L125 PetriNetUnfolderBase]: For 91093/91373 co-relation queries the response was YES. [2024-05-12 13:37:11,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42415 conditions, 12243 events. 4337/12243 cut-off events. For 91093/91373 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 147440 event pairs, 2726 based on Foata normal form. 54/11081 useless extension candidates. Maximal degree in co-relation 42253. Up to 7458 conditions per place. [2024-05-12 13:37:11,844 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 260 selfloop transitions, 43 changer transitions 0/316 dead transitions. [2024-05-12 13:37:11,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 316 transitions, 5030 flow [2024-05-12 13:37:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:37:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:37:11,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-05-12 13:37:11,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167464114832536 [2024-05-12 13:37:11,846 INFO L175 Difference]: Start difference. First operand has 394 places, 272 transitions, 4196 flow. Second operand 11 states and 216 transitions. [2024-05-12 13:37:11,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 316 transitions, 5030 flow [2024-05-12 13:37:12,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 316 transitions, 4843 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 13:37:12,585 INFO L231 Difference]: Finished difference. Result has 399 places, 273 transitions, 4117 flow [2024-05-12 13:37:12,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4117, PETRI_PLACES=399, PETRI_TRANSITIONS=273} [2024-05-12 13:37:12,586 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 357 predicate places. [2024-05-12 13:37:12,586 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 273 transitions, 4117 flow [2024-05-12 13:37:12,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:37:12,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:12,586 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 13:37:12,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-05-12 13:37:12,587 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:37:12,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:12,587 INFO L85 PathProgramCache]: Analyzing trace with hash 862216078, now seen corresponding path program 30 times [2024-05-12 13:37:12,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:12,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771369365] [2024-05-12 13:37:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:12,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:14,434 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 13:37:14,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:14,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771369365] [2024-05-12 13:37:14,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771369365] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:14,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:14,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:37:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155719206] [2024-05-12 13:37:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:14,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:37:14,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:37:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:37:14,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:37:14,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 273 transitions, 4117 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:37:14,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:14,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:37:14,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:17,091 INFO L124 PetriNetUnfolderBase]: 4455/12426 cut-off events. [2024-05-12 13:37:17,091 INFO L125 PetriNetUnfolderBase]: For 87014/87289 co-relation queries the response was YES. [2024-05-12 13:37:17,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42434 conditions, 12426 events. 4455/12426 cut-off events. For 87014/87289 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 149225 event pairs, 2404 based on Foata normal form. 55/11176 useless extension candidates. Maximal degree in co-relation 42270. Up to 6229 conditions per place. [2024-05-12 13:37:17,249 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 211 selfloop transitions, 92 changer transitions 0/316 dead transitions. [2024-05-12 13:37:17,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 316 transitions, 4939 flow [2024-05-12 13:37:17,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:37:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:37:17,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-05-12 13:37:17,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311004784688995 [2024-05-12 13:37:17,250 INFO L175 Difference]: Start difference. First operand has 399 places, 273 transitions, 4117 flow. Second operand 11 states and 222 transitions. [2024-05-12 13:37:17,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 316 transitions, 4939 flow [2024-05-12 13:37:17,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 316 transitions, 4803 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-05-12 13:37:17,957 INFO L231 Difference]: Finished difference. Result has 399 places, 273 transitions, 4168 flow [2024-05-12 13:37:17,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3981, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4168, PETRI_PLACES=399, PETRI_TRANSITIONS=273} [2024-05-12 13:37:17,957 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 357 predicate places. [2024-05-12 13:37:17,957 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 273 transitions, 4168 flow [2024-05-12 13:37:17,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:37:17,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:17,958 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 13:37:17,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-05-12 13:37:17,958 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:37:17,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1529228702, now seen corresponding path program 31 times [2024-05-12 13:37:17,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:17,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903481320] [2024-05-12 13:37:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:17,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:19,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:19,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903481320] [2024-05-12 13:37:19,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903481320] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:19,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:19,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:37:19,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34519809] [2024-05-12 13:37:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:19,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:37:19,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:19,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:37:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:37:19,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 13:37:19,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 273 transitions, 4168 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:37:19,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:19,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 13:37:19,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:22,334 INFO L124 PetriNetUnfolderBase]: 4371/12395 cut-off events. [2024-05-12 13:37:22,334 INFO L125 PetriNetUnfolderBase]: For 72956/73231 co-relation queries the response was YES. [2024-05-12 13:37:22,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42153 conditions, 12395 events. 4371/12395 cut-off events. For 72956/73231 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 149795 event pairs, 2762 based on Foata normal form. 55/11212 useless extension candidates. Maximal degree in co-relation 41991. Up to 7530 conditions per place. [2024-05-12 13:37:22,575 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 259 selfloop transitions, 43 changer transitions 0/315 dead transitions. [2024-05-12 13:37:22,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 315 transitions, 4812 flow [2024-05-12 13:37:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:37:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:37:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-05-12 13:37:22,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167464114832536 [2024-05-12 13:37:22,577 INFO L175 Difference]: Start difference. First operand has 399 places, 273 transitions, 4168 flow. Second operand 11 states and 216 transitions. [2024-05-12 13:37:22,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 315 transitions, 4812 flow [2024-05-12 13:37:22,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 315 transitions, 4270 flow, removed 26 selfloop flow, removed 76 redundant places. [2024-05-12 13:37:22,814 INFO L231 Difference]: Finished difference. Result has 332 places, 272 transitions, 3536 flow [2024-05-12 13:37:22,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3450, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3536, PETRI_PLACES=332, PETRI_TRANSITIONS=272} [2024-05-12 13:37:22,814 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-05-12 13:37:22,814 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 272 transitions, 3536 flow [2024-05-12 13:37:22,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 13:37:22,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:22,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:22,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-05-12 13:37:22,815 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:37:22,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash 346673431, now seen corresponding path program 1 times [2024-05-12 13:37:22,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:22,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969946159] [2024-05-12 13:37:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:22,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:22,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969946159] [2024-05-12 13:37:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969946159] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:22,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:22,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:37:22,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131273940] [2024-05-12 13:37:22,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:22,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:37:22,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:37:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:37:22,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-05-12 13:37:22,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 272 transitions, 3536 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:22,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:22,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-05-12 13:37:22,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:24,206 INFO L124 PetriNetUnfolderBase]: 3990/9800 cut-off events. [2024-05-12 13:37:24,207 INFO L125 PetriNetUnfolderBase]: For 35990/36032 co-relation queries the response was YES. [2024-05-12 13:37:24,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32947 conditions, 9800 events. 3990/9800 cut-off events. For 35990/36032 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 102129 event pairs, 561 based on Foata normal form. 693/10200 useless extension candidates. Maximal degree in co-relation 32851. Up to 3203 conditions per place. [2024-05-12 13:37:24,274 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 260 selfloop transitions, 6 changer transitions 0/350 dead transitions. [2024-05-12 13:37:24,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 350 transitions, 5200 flow [2024-05-12 13:37:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:37:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:37:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-05-12 13:37:24,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-05-12 13:37:24,275 INFO L175 Difference]: Start difference. First operand has 332 places, 272 transitions, 3536 flow. Second operand 5 states and 114 transitions. [2024-05-12 13:37:24,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 350 transitions, 5200 flow [2024-05-12 13:37:24,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 350 transitions, 4355 flow, removed 53 selfloop flow, removed 30 redundant places. [2024-05-12 13:37:24,344 INFO L231 Difference]: Finished difference. Result has 308 places, 259 transitions, 2866 flow [2024-05-12 13:37:24,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2866, PETRI_PLACES=308, PETRI_TRANSITIONS=259} [2024-05-12 13:37:24,344 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-05-12 13:37:24,344 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 259 transitions, 2866 flow [2024-05-12 13:37:24,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:24,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:24,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:24,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-05-12 13:37:24,345 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:37:24,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:24,345 INFO L85 PathProgramCache]: Analyzing trace with hash 73079937, now seen corresponding path program 1 times [2024-05-12 13:37:24,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:24,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795973890] [2024-05-12 13:37:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:24,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:24,459 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 13:37:24,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795973890] [2024-05-12 13:37:24,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795973890] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:24,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:24,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:24,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104120113] [2024-05-12 13:37:24,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:24,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:37:24,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:24,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:37:24,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:37:24,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-05-12 13:37:24,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 259 transitions, 2866 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:24,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:24,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-05-12 13:37:24,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:25,262 INFO L124 PetriNetUnfolderBase]: 2464/6770 cut-off events. [2024-05-12 13:37:25,262 INFO L125 PetriNetUnfolderBase]: For 12300/12603 co-relation queries the response was YES. [2024-05-12 13:37:25,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21831 conditions, 6770 events. 2464/6770 cut-off events. For 12300/12603 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 72571 event pairs, 795 based on Foata normal form. 299/6509 useless extension candidates. Maximal degree in co-relation 21749. Up to 3054 conditions per place. [2024-05-12 13:37:25,311 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 28 selfloop transitions, 2 changer transitions 228/274 dead transitions. [2024-05-12 13:37:25,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 274 transitions, 3368 flow [2024-05-12 13:37:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:37:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:37:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-05-12 13:37:25,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-05-12 13:37:25,313 INFO L175 Difference]: Start difference. First operand has 308 places, 259 transitions, 2866 flow. Second operand 6 states and 128 transitions. [2024-05-12 13:37:25,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 274 transitions, 3368 flow [2024-05-12 13:37:25,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 274 transitions, 3315 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:37:25,349 INFO L231 Difference]: Finished difference. Result has 312 places, 44 transitions, 231 flow [2024-05-12 13:37:25,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2813, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=312, PETRI_TRANSITIONS=44} [2024-05-12 13:37:25,349 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 270 predicate places. [2024-05-12 13:37:25,349 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 44 transitions, 231 flow [2024-05-12 13:37:25,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:25,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:25,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:25,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-05-12 13:37:25,350 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:37:25,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:25,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1542036797, now seen corresponding path program 2 times [2024-05-12 13:37:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:25,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675975039] [2024-05-12 13:37:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:25,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:25,947 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 13:37:25,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:25,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675975039] [2024-05-12 13:37:25,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675975039] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:25,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:25,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:37:25,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036320673] [2024-05-12 13:37:25,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:25,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:37:25,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:37:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:37:26,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-05-12 13:37:26,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 44 transitions, 231 flow. Second operand has 12 states, 12 states have (on average 15.5) internal successors, (186), 12 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 13:37:26,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:26,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-05-12 13:37:26,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:26,278 INFO L124 PetriNetUnfolderBase]: 142/426 cut-off events. [2024-05-12 13:37:26,279 INFO L125 PetriNetUnfolderBase]: For 262/280 co-relation queries the response was YES. [2024-05-12 13:37:26,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 426 events. 142/426 cut-off events. For 262/280 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2342 event pairs, 14 based on Foata normal form. 15/411 useless extension candidates. Maximal degree in co-relation 1114. Up to 108 conditions per place. [2024-05-12 13:37:26,281 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 19 selfloop transitions, 6 changer transitions 23/63 dead transitions. [2024-05-12 13:37:26,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 63 transitions, 369 flow [2024-05-12 13:37:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:37:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:37:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-05-12 13:37:26,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2024-05-12 13:37:26,282 INFO L175 Difference]: Start difference. First operand has 312 places, 44 transitions, 231 flow. Second operand 11 states and 194 transitions. [2024-05-12 13:37:26,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 63 transitions, 369 flow [2024-05-12 13:37:26,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 63 transitions, 292 flow, removed 11 selfloop flow, removed 28 redundant places. [2024-05-12 13:37:26,284 INFO L231 Difference]: Finished difference. Result has 115 places, 34 transitions, 137 flow [2024-05-12 13:37:26,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=137, PETRI_PLACES=115, PETRI_TRANSITIONS=34} [2024-05-12 13:37:26,285 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-05-12 13:37:26,285 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 34 transitions, 137 flow [2024-05-12 13:37:26,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.5) internal successors, (186), 12 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 13:37:26,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:26,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:26,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-05-12 13:37:26,285 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:37:26,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:26,286 INFO L85 PathProgramCache]: Analyzing trace with hash -626204309, now seen corresponding path program 3 times [2024-05-12 13:37:26,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:26,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889569336] [2024-05-12 13:37:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:26,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 13:37:26,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-12 13:37:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 13:37:26,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-12 13:37:26,373 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-12 13:37:26,374 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-05-12 13:37:26,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-05-12 13:37:26,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-05-12 13:37:26,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-05-12 13:37:26,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-05-12 13:37:26,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-05-12 13:37:26,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-05-12 13:37:26,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-05-12 13:37:26,379 INFO L445 BasicCegarLoop]: Path program histogram: [31, 29, 13, 11, 7, 6, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:26,383 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 13:37:26,384 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 13:37:26,426 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 13:37:26,426 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 13:37:26,427 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 01:37:26 BasicIcfg [2024-05-12 13:37:26,427 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 13:37:26,427 INFO L158 Benchmark]: Toolchain (without parser) took 391231.79ms. Allocated memory was 176.2MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 94.3MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-05-12 13:37:26,427 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory was 126.4MB in the beginning and 126.2MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 13:37:26,427 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 13:37:26,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.95ms. Allocated memory was 176.2MB in the beginning and 247.5MB in the end (delta: 71.3MB). Free memory was 94.1MB in the beginning and 204.3MB in the end (delta: -110.1MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2024-05-12 13:37:26,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.96ms. Allocated memory is still 247.5MB. Free memory was 204.3MB in the beginning and 201.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 13:37:26,428 INFO L158 Benchmark]: Boogie Preprocessor took 42.27ms. Allocated memory is still 247.5MB. Free memory was 201.2MB in the beginning and 198.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-05-12 13:37:26,428 INFO L158 Benchmark]: RCFGBuilder took 666.51ms. Allocated memory is still 247.5MB. Free memory was 198.0MB in the beginning and 140.4MB in the end (delta: 57.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-05-12 13:37:26,428 INFO L158 Benchmark]: TraceAbstraction took 389845.31ms. Allocated memory was 247.5MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 139.3MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-05-12 13:37:26,429 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory was 126.4MB in the beginning and 126.2MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 625.95ms. Allocated memory was 176.2MB in the beginning and 247.5MB in the end (delta: 71.3MB). Free memory was 94.1MB in the beginning and 204.3MB in the end (delta: -110.1MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.96ms. Allocated memory is still 247.5MB. Free memory was 204.3MB in the beginning and 201.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.27ms. Allocated memory is still 247.5MB. Free memory was 201.2MB in the beginning and 198.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 666.51ms. Allocated memory is still 247.5MB. Free memory was 198.0MB in the beginning and 140.4MB in the end (delta: 57.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 389845.31ms. Allocated memory was 247.5MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 139.3MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p0_EBX = 0; [L715] 0 int __unbuffered_p1_EAX = 0; [L717] 0 int __unbuffered_p1_EBX = 0; [L718] 0 _Bool main$tmp_guard0; [L719] 0 _Bool main$tmp_guard1; [L721] 0 int x = 0; [L723] 0 int y = 0; [L724] 0 _Bool y$flush_delayed; [L725] 0 int y$mem_tmp; [L726] 0 _Bool y$r_buff0_thd0; [L727] 0 _Bool y$r_buff0_thd1; [L728] 0 _Bool y$r_buff0_thd2; [L729] 0 _Bool y$r_buff1_thd0; [L730] 0 _Bool y$r_buff1_thd1; [L731] 0 _Bool y$r_buff1_thd2; [L732] 0 _Bool y$read_delayed; [L733] 0 int *y$read_delayed_var; [L734] 0 int y$w_buff0; [L735] 0 _Bool y$w_buff0_used; [L736] 0 int y$w_buff1; [L737] 0 _Bool y$w_buff1_used; [L738] 0 _Bool weak$$choice0; [L739] 0 _Bool weak$$choice2; [L826] 0 pthread_t t1723; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1723={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L827] 0 //@ ghost multithreaded = 1; [L827] FCALL, FORK 0 pthread_create(&t1723, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1723={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L828] 0 pthread_t t1724; VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1723={5:0}, t1724={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L829] 0 //@ assert (((((((((((((((((!multithreaded || (0 <= __unbuffered_cnt)) && (!multithreaded || (((0 <= y) && (y <= 1)) && ((y == 0) || (y == 1))))) && (!multithreaded || (((0 <= x) && (x <= 1)) && ((x == 0) || (x == 1))))) && (!multithreaded || (y$read_delayed_var == 0))) && (!multithreaded || (((0 <= __unbuffered_p1_EBX) && (__unbuffered_p1_EBX <= 1)) && ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1))))) && (!multithreaded || (((0 <= y$w_buff1) && (y$w_buff1 <= 1)) && ((y$w_buff1 == 0) || (y$w_buff1 == 1))))) && (!multithreaded || (y$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (y$read_delayed == (_Bool) 0))) && (!multithreaded || (((0 <= y$w_buff0) && (y$w_buff0 <= 1)) && ((y$w_buff0 == 0) || (y$w_buff0 == 1))))) && (!multithreaded || (y$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (y$flush_delayed == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 1)) && ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1))))) && (!multithreaded || (((0 <= y$mem_tmp) && (y$mem_tmp <= 1)) && ((y$mem_tmp == 0) || (y$mem_tmp == 1))))) && (!multithreaded || (y$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 1)) && ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1))))) && (!multithreaded || (y$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p0_EBX) && (__unbuffered_p0_EBX <= 1)) && ((__unbuffered_p0_EBX == 0) || (__unbuffered_p0_EBX == 1))))); [L829] FCALL, FORK 0 pthread_create(&t1724, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1723={5:0}, t1724={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L774] 2 y$w_buff1 = y$w_buff0 [L775] 2 y$w_buff0 = 1 [L776] 2 y$w_buff1_used = y$w_buff0_used [L777] 2 y$w_buff0_used = (_Bool)1 [L778] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L778] RET 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L779] 2 y$r_buff1_thd0 = y$r_buff0_thd0 [L780] 2 y$r_buff1_thd1 = y$r_buff0_thd1 [L781] 2 y$r_buff1_thd2 = y$r_buff0_thd2 [L782] 2 y$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L785] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L786] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L787] 2 y$flush_delayed = weak$$choice2 [L788] 2 y$mem_tmp = y [L789] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L790] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L791] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L792] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L793] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L794] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L795] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L796] 2 __unbuffered_p1_EAX = y [L797] 2 y = y$flush_delayed ? y$mem_tmp : y [L798] 2 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L801] 2 __unbuffered_p1_EBX = x VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L743] 1 x = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L746] 1 __unbuffered_p0_EAX = x VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L749] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L750] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L751] 1 y$flush_delayed = weak$$choice2 [L752] 1 y$mem_tmp = y [L753] 1 y = !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L754] 1 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff0)) [L755] 1 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff1 : y$w_buff1)) [L756] 1 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used)) [L757] 1 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L758] 1 y$r_buff0_thd1 = weak$$choice2 ? y$r_buff0_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff0_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1)) [L759] 1 y$r_buff1_thd1 = weak$$choice2 ? y$r_buff1_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff1_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L760] 1 __unbuffered_p0_EBX = y [L761] 1 y = y$flush_delayed ? y$mem_tmp : y [L762] 1 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L804] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L805] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L806] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L807] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L808] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L811] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L767] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L830] 0 //@ assert (((((((((((((((((!multithreaded || (0 <= __unbuffered_cnt)) && (!multithreaded || (((0 <= y) && (y <= 1)) && ((y == 0) || (y == 1))))) && (!multithreaded || (((0 <= x) && (x <= 1)) && ((x == 0) || (x == 1))))) && (!multithreaded || (y$read_delayed_var == 0))) && (!multithreaded || (((0 <= __unbuffered_p1_EBX) && (__unbuffered_p1_EBX <= 1)) && ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1))))) && (!multithreaded || (((0 <= y$w_buff1) && (y$w_buff1 <= 1)) && ((y$w_buff1 == 0) || (y$w_buff1 == 1))))) && (!multithreaded || (y$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (y$read_delayed == (_Bool) 0))) && (!multithreaded || (((0 <= y$w_buff0) && (y$w_buff0 <= 1)) && ((y$w_buff0 == 0) || (y$w_buff0 == 1))))) && (!multithreaded || (y$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (y$flush_delayed == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 1)) && ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1))))) && (!multithreaded || (((0 <= y$mem_tmp) && (y$mem_tmp <= 1)) && ((y$mem_tmp == 0) || (y$mem_tmp == 1))))) && (!multithreaded || (y$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 1)) && ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1))))) && (!multithreaded || (y$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p0_EBX) && (__unbuffered_p0_EBX <= 1)) && ((__unbuffered_p0_EBX == 0) || (__unbuffered_p0_EBX == 1))))); VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1723={5:0}, t1724={3:0}, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L831] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1723={5:0}, t1724={3:0}, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L833] CALL 0 assume_abort_if_not(main$tmp_guard0) [L4] COND FALSE 0 !(!cond) [L833] RET 0 assume_abort_if_not(main$tmp_guard0) [L835] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L836] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L837] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L838] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L839] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1723={5:0}, t1724={3:0}, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L842] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 1 && __unbuffered_p0_EBX == 0 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1723={5:0}, t1724={3:0}, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L844] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L19] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L19] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 829]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 829]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 827]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 389.7s, OverallIterations: 124, TraceHistogramMax: 1, PathProgramHistogramMax: 31, EmptinessCheckTime: 0.0s, AutomataDifference: 234.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10136 SdHoareTripleChecker+Valid, 45.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8539 mSDsluCounter, 2179 SdHoareTripleChecker+Invalid, 38.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1884 mSDsCounter, 3628 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67464 IncrementalHoareTripleChecker+Invalid, 71092 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3628 mSolverCounterUnsat, 295 mSDtfsCounter, 67464 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1298 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2586 ImplicationChecksByTransitivity, 42.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4196occurred in iteration=117, InterpolantAutomatonStates: 1165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 152.4s InterpolantComputationTime, 2050 NumberOfCodeBlocks, 2050 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 1899 ConstructedInterpolants, 0 QuantifiedInterpolants, 89612 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 123 InterpolantComputations, 123 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-05-12 13:37:26,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE