./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe012_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe012_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:54:15,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:54:15,454 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:54:15,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:54:15,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:54:15,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:54:15,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:54:15,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:54:15,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:54:15,492 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:54:15,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:54:15,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:54:15,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:54:15,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:54:15,494 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:54:15,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:54:15,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:54:15,495 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:54:15,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:54:15,495 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:54:15,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:54:15,496 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:54:15,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:54:15,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:54:15,496 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:54:15,496 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:54:15,496 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:54:15,496 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:54:15,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:54:15,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:54:15,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:54:15,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:54:15,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:54:15,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:54:15,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:54:15,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:54:15,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:54:15,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:54:15,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:54:15,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:54:15,499 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:54:15,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:54:15,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:54:15,499 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:54:15,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:54:15,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:54:15,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:54:15,785 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:54:15,785 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:54:15,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe012_power.opt.yml/witness.yml [2024-06-27 18:54:15,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:54:15,974 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:54:15,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i [2024-06-27 18:54:17,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:54:17,184 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:54:17,184 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i [2024-06-27 18:54:17,197 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62b523bf/f0c14f5255f14a4fbaa8828e1d3e9c4d/FLAG6000a55af [2024-06-27 18:54:17,212 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62b523bf/f0c14f5255f14a4fbaa8828e1d3e9c4d [2024-06-27 18:54:17,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:54:17,214 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:54:17,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:54:17,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:54:17,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:54:17,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:54:15" (1/2) ... [2024-06-27 18:54:17,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289637b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:54:17, skipping insertion in model container [2024-06-27 18:54:17,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:54:15" (1/2) ... [2024-06-27 18:54:17,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3640402c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:54:17, skipping insertion in model container [2024-06-27 18:54:17,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:54:17" (2/2) ... [2024-06-27 18:54:17,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289637b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17, skipping insertion in model container [2024-06-27 18:54:17,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:54:17" (2/2) ... [2024-06-27 18:54:17,249 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:54:17,348 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:54:17,349 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((((((((((((! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:54:17,349 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((((((((((((! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:54:17,349 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((((((((((((((! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:54:17,350 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:54:17,350 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-27 18:54:17,386 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:54:17,523 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i[951,964] [2024-06-27 18:54:17,727 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:54:17,738 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:54:17,768 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i[951,964] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:54:17,851 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:54:17,880 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:54:17,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17 WrapperNode [2024-06-27 18:54:17,881 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:54:17,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:54:17,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:54:17,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:54:17,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,941 INFO L138 Inliner]: procedures = 175, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 215 [2024-06-27 18:54:17,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:54:17,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:54:17,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:54:17,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:54:17,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,955 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,981 INFO L175 MemorySlicer]: Split 30 memory accesses to 2 slices as follows [2, 28]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-27 18:54:17,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:17,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:54:17,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:54:17,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:54:18,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:54:18,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (1/1) ... [2024-06-27 18:54:18,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:54:18,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:54:18,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:54:18,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:54:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 18:54:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 18:54:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 18:54:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 18:54:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:54:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:54:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:54:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:54:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:54:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:54:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:54:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:54:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:54:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:54:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:54:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:54:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:54:18,117 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:54:18,241 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:54:18,243 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:54:18,644 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:54:18,645 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:54:18,890 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:54:18,890 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:54:18,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:54:18 BoogieIcfgContainer [2024-06-27 18:54:18,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:54:18,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:54:18,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:54:18,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:54:18,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:54:15" (1/4) ... [2024-06-27 18:54:18,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616f6b75 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:54:18, skipping insertion in model container [2024-06-27 18:54:18,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:54:17" (2/4) ... [2024-06-27 18:54:18,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616f6b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:54:18, skipping insertion in model container [2024-06-27 18:54:18,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:54:17" (3/4) ... [2024-06-27 18:54:18,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616f6b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:54:18, skipping insertion in model container [2024-06-27 18:54:18,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:54:18" (4/4) ... [2024-06-27 18:54:18,897 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_power.opt.i [2024-06-27 18:54:18,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:54:18,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:54:18,911 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:54:18,954 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:54:18,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:54:19,002 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 18:54:19,003 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:54:19,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 18:54:19,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:54:19,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 18:54:19,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:54:19,023 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;@56a2bbc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:54:19,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:54:19,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:54:19,027 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:54:19,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:54:19,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:19,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:54:19,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:19,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash 723299614, now seen corresponding path program 1 times [2024-06-27 18:54:19,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:19,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821247232] [2024-06-27 18:54:19,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:19,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:20,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:20,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821247232] [2024-06-27 18:54:20,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821247232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:20,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:20,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:54:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099699471] [2024-06-27 18:54:20,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:20,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:54:20,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:54:20,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:54:20,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:54:20,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:20,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:20,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:54:20,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:21,506 INFO L124 PetriNetUnfolderBase]: 3009/4772 cut-off events. [2024-06-27 18:54:21,506 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 18:54:21,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9214 conditions, 4772 events. 3009/4772 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 29943 event pairs, 1797 based on Foata normal form. 126/4425 useless extension candidates. Maximal degree in co-relation 9202. Up to 4373 conditions per place. [2024-06-27 18:54:21,557 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 46 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-27 18:54:21,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 239 flow [2024-06-27 18:54:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:54:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:54:21,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-27 18:54:21,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-06-27 18:54:21,586 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 94 transitions. [2024-06-27 18:54:21,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 239 flow [2024-06-27 18:54:21,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:21,594 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-27 18:54:21,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-27 18:54:21,598 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:54:21,599 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-27 18:54:21,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:21,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:21,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:21,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:54:21,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:21,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2072190327, now seen corresponding path program 1 times [2024-06-27 18:54:21,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:21,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723863203] [2024-06-27 18:54:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:21,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:23,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:23,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723863203] [2024-06-27 18:54:23,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723863203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:23,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:23,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:54:23,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265018025] [2024-06-27 18:54:23,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:23,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:54:23,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:54:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:54:24,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:24,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:24,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:24,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:24,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:25,280 INFO L124 PetriNetUnfolderBase]: 5304/8232 cut-off events. [2024-06-27 18:54:25,280 INFO L125 PetriNetUnfolderBase]: For 1186/1186 co-relation queries the response was YES. [2024-06-27 18:54:25,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17536 conditions, 8232 events. 5304/8232 cut-off events. For 1186/1186 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 49962 event pairs, 2077 based on Foata normal form. 6/7698 useless extension candidates. Maximal degree in co-relation 17524. Up to 7468 conditions per place. [2024-06-27 18:54:25,319 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 59 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2024-06-27 18:54:25,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 329 flow [2024-06-27 18:54:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:54:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:54:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-06-27 18:54:25,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-27 18:54:25,321 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 114 transitions. [2024-06-27 18:54:25,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 329 flow [2024-06-27 18:54:25,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:54:25,323 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 164 flow [2024-06-27 18:54:25,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-06-27 18:54:25,324 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-27 18:54:25,324 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 164 flow [2024-06-27 18:54:25,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:25,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:25,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:25,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:54:25,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:25,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash -79688852, now seen corresponding path program 1 times [2024-06-27 18:54:25,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:25,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162519009] [2024-06-27 18:54:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:25,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:25,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:25,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162519009] [2024-06-27 18:54:25,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162519009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:25,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:25,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:54:25,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908835041] [2024-06-27 18:54:25,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:25,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:54:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:54:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:54:25,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-27 18:54:25,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:25,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:25,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-27 18:54:25,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:25,765 INFO L124 PetriNetUnfolderBase]: 1049/1925 cut-off events. [2024-06-27 18:54:25,765 INFO L125 PetriNetUnfolderBase]: For 730/796 co-relation queries the response was YES. [2024-06-27 18:54:25,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4241 conditions, 1925 events. 1049/1925 cut-off events. For 730/796 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12640 event pairs, 231 based on Foata normal form. 0/1865 useless extension candidates. Maximal degree in co-relation 4227. Up to 1180 conditions per place. [2024-06-27 18:54:25,778 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 47 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-06-27 18:54:25,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 314 flow [2024-06-27 18:54:25,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:54:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:54:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 18:54:25,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-06-27 18:54:25,780 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 164 flow. Second operand 3 states and 100 transitions. [2024-06-27 18:54:25,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 314 flow [2024-06-27 18:54:25,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 296 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:25,783 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 148 flow [2024-06-27 18:54:25,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-27 18:54:25,784 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2024-06-27 18:54:25,784 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 148 flow [2024-06-27 18:54:25,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:25,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:25,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:25,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:54:25,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:25,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1824613034, now seen corresponding path program 1 times [2024-06-27 18:54:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:25,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454909713] [2024-06-27 18:54:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:26,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:26,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454909713] [2024-06-27 18:54:26,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454909713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:26,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:26,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:54:26,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195076991] [2024-06-27 18:54:26,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:26,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:54:26,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:26,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:54:26,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:54:26,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:26,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:26,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:26,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:26,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:28,247 INFO L124 PetriNetUnfolderBase]: 3516/5534 cut-off events. [2024-06-27 18:54:28,248 INFO L125 PetriNetUnfolderBase]: For 2308/2308 co-relation queries the response was YES. [2024-06-27 18:54:28,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12857 conditions, 5534 events. 3516/5534 cut-off events. For 2308/2308 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 33385 event pairs, 1659 based on Foata normal form. 2/5389 useless extension candidates. Maximal degree in co-relation 12842. Up to 5050 conditions per place. [2024-06-27 18:54:28,279 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 60 selfloop transitions, 10 changer transitions 1/79 dead transitions. [2024-06-27 18:54:28,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 372 flow [2024-06-27 18:54:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:54:28,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:54:28,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-27 18:54:28,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-27 18:54:28,283 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 148 flow. Second operand 5 states and 121 transitions. [2024-06-27 18:54:28,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 372 flow [2024-06-27 18:54:28,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:28,289 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 220 flow [2024-06-27 18:54:28,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-06-27 18:54:28,291 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-06-27 18:54:28,291 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 220 flow [2024-06-27 18:54:28,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:28,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:28,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:28,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:54:28,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:28,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:28,293 INFO L85 PathProgramCache]: Analyzing trace with hash 713641240, now seen corresponding path program 1 times [2024-06-27 18:54:28,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:28,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617060050] [2024-06-27 18:54:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:28,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:29,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:29,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617060050] [2024-06-27 18:54:29,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617060050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:29,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:29,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:54:29,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640627085] [2024-06-27 18:54:29,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:29,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:54:29,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:29,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:54:29,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:54:29,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:29,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:29,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:29,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:29,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:30,852 INFO L124 PetriNetUnfolderBase]: 3166/5038 cut-off events. [2024-06-27 18:54:30,853 INFO L125 PetriNetUnfolderBase]: For 3280/3280 co-relation queries the response was YES. [2024-06-27 18:54:30,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 5038 events. 3166/5038 cut-off events. For 3280/3280 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30278 event pairs, 1500 based on Foata normal form. 2/4893 useless extension candidates. Maximal degree in co-relation 12622. Up to 4540 conditions per place. [2024-06-27 18:54:30,871 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 75 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-27 18:54:30,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 529 flow [2024-06-27 18:54:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:54:30,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 18:54:30,873 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 220 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:54:30,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 529 flow [2024-06-27 18:54:30,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 97 transitions, 515 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 18:54:30,876 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 342 flow [2024-06-27 18:54:30,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2024-06-27 18:54:30,876 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-27 18:54:30,877 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 342 flow [2024-06-27 18:54:30,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:30,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:30,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:30,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:54:30,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:30,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:30,878 INFO L85 PathProgramCache]: Analyzing trace with hash 648043815, now seen corresponding path program 1 times [2024-06-27 18:54:30,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:30,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410113132] [2024-06-27 18:54:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:30,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:32,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:32,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410113132] [2024-06-27 18:54:32,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410113132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:32,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:32,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:32,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882034455] [2024-06-27 18:54:32,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:32,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:32,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:32,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:32,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:32,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:32,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:32,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:34,042 INFO L124 PetriNetUnfolderBase]: 3164/5035 cut-off events. [2024-06-27 18:54:34,043 INFO L125 PetriNetUnfolderBase]: For 5760/5760 co-relation queries the response was YES. [2024-06-27 18:54:34,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14081 conditions, 5035 events. 3164/5035 cut-off events. For 5760/5760 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30211 event pairs, 1452 based on Foata normal form. 2/4890 useless extension candidates. Maximal degree in co-relation 14058. Up to 4518 conditions per place. [2024-06-27 18:54:34,066 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 84 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2024-06-27 18:54:34,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 110 transitions, 668 flow [2024-06-27 18:54:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:54:34,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 18:54:34,068 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 342 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:54:34,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 110 transitions, 668 flow [2024-06-27 18:54:34,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 110 transitions, 641 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:34,073 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 396 flow [2024-06-27 18:54:34,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-27 18:54:34,073 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-27 18:54:34,074 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 396 flow [2024-06-27 18:54:34,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:34,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:34,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:34,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:54:34,074 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:34,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:34,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1563004866, now seen corresponding path program 1 times [2024-06-27 18:54:34,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:34,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406307645] [2024-06-27 18:54:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406307645] [2024-06-27 18:54:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406307645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:35,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:35,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:35,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894451607] [2024-06-27 18:54:35,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:35,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:35,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:35,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:35,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:54:35,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 396 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:35,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:35,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:54:35,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:37,017 INFO L124 PetriNetUnfolderBase]: 4063/6407 cut-off events. [2024-06-27 18:54:37,018 INFO L125 PetriNetUnfolderBase]: For 10214/10214 co-relation queries the response was YES. [2024-06-27 18:54:37,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18873 conditions, 6407 events. 4063/6407 cut-off events. For 10214/10214 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 37900 event pairs, 1582 based on Foata normal form. 2/6224 useless extension candidates. Maximal degree in co-relation 18848. Up to 5711 conditions per place. [2024-06-27 18:54:37,049 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 71 selfloop transitions, 22 changer transitions 0/100 dead transitions. [2024-06-27 18:54:37,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 676 flow [2024-06-27 18:54:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:54:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:54:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 18:54:37,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:54:37,052 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 396 flow. Second operand 5 states and 120 transitions. [2024-06-27 18:54:37,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 676 flow [2024-06-27 18:54:37,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 100 transitions, 625 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:54:37,060 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 447 flow [2024-06-27 18:54:37,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=447, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2024-06-27 18:54:37,061 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-27 18:54:37,061 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 447 flow [2024-06-27 18:54:37,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:37,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:37,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:37,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:54:37,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:37,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash -589267266, now seen corresponding path program 2 times [2024-06-27 18:54:37,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:37,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167864315] [2024-06-27 18:54:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:37,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:38,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167864315] [2024-06-27 18:54:38,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167864315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:38,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:38,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:54:38,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473881700] [2024-06-27 18:54:38,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:38,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:54:38,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:38,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:54:38,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:54:38,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:38,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 447 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:38,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:38,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:38,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:39,642 INFO L124 PetriNetUnfolderBase]: 3185/5063 cut-off events. [2024-06-27 18:54:39,642 INFO L125 PetriNetUnfolderBase]: For 11498/11498 co-relation queries the response was YES. [2024-06-27 18:54:39,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16250 conditions, 5063 events. 3185/5063 cut-off events. For 11498/11498 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30347 event pairs, 1411 based on Foata normal form. 2/4916 useless extension candidates. Maximal degree in co-relation 16224. Up to 4516 conditions per place. [2024-06-27 18:54:39,696 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 77 selfloop transitions, 26 changer transitions 0/111 dead transitions. [2024-06-27 18:54:39,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 111 transitions, 775 flow [2024-06-27 18:54:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 18:54:39,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 18:54:39,699 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 447 flow. Second operand 6 states and 146 transitions. [2024-06-27 18:54:39,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 111 transitions, 775 flow [2024-06-27 18:54:39,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 111 transitions, 711 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:39,707 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 493 flow [2024-06-27 18:54:39,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=493, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2024-06-27 18:54:39,710 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-27 18:54:39,710 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 493 flow [2024-06-27 18:54:39,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:39,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:39,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:39,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:54:39,711 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:39,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1385476329, now seen corresponding path program 1 times [2024-06-27 18:54:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:39,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422264604] [2024-06-27 18:54:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:39,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:41,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:41,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422264604] [2024-06-27 18:54:41,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422264604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:41,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:41,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:41,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921011782] [2024-06-27 18:54:41,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:41,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:41,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:41,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:41,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 493 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:41,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:41,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:41,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:43,251 INFO L124 PetriNetUnfolderBase]: 3182/5068 cut-off events. [2024-06-27 18:54:43,251 INFO L125 PetriNetUnfolderBase]: For 12432/12432 co-relation queries the response was YES. [2024-06-27 18:54:43,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16582 conditions, 5068 events. 3182/5068 cut-off events. For 12432/12432 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30470 event pairs, 1342 based on Foata normal form. 4/4925 useless extension candidates. Maximal degree in co-relation 16555. Up to 4504 conditions per place. [2024-06-27 18:54:43,272 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 102 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2024-06-27 18:54:43,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 131 transitions, 895 flow [2024-06-27 18:54:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:54:43,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-27 18:54:43,274 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 493 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:54:43,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 131 transitions, 895 flow [2024-06-27 18:54:43,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 131 transitions, 823 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 18:54:43,281 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 513 flow [2024-06-27 18:54:43,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=513, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-27 18:54:43,282 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-06-27 18:54:43,282 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 513 flow [2024-06-27 18:54:43,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:43,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:43,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:43,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:54:43,283 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:43,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:43,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1208508766, now seen corresponding path program 1 times [2024-06-27 18:54:43,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:43,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227042879] [2024-06-27 18:54:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:43,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:45,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:45,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227042879] [2024-06-27 18:54:45,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227042879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:45,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:45,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:45,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824132779] [2024-06-27 18:54:45,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:45,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:45,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:45,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:45,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:54:45,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 513 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:45,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:45,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:54:45,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:46,536 INFO L124 PetriNetUnfolderBase]: 4078/6435 cut-off events. [2024-06-27 18:54:46,537 INFO L125 PetriNetUnfolderBase]: For 18708/18708 co-relation queries the response was YES. [2024-06-27 18:54:46,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21321 conditions, 6435 events. 4078/6435 cut-off events. For 18708/18708 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38118 event pairs, 1507 based on Foata normal form. 2/6252 useless extension candidates. Maximal degree in co-relation 21293. Up to 5678 conditions per place. [2024-06-27 18:54:46,569 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 95 selfloop transitions, 25 changer transitions 0/127 dead transitions. [2024-06-27 18:54:46,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 127 transitions, 921 flow [2024-06-27 18:54:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:54:46,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 18:54:46,571 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 513 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:54:46,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 127 transitions, 921 flow [2024-06-27 18:54:46,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 127 transitions, 853 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:54:46,585 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 643 flow [2024-06-27 18:54:46,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=643, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2024-06-27 18:54:46,586 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-27 18:54:46,586 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 643 flow [2024-06-27 18:54:46,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:46,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:46,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:46,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:54:46,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:46,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:46,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1087407728, now seen corresponding path program 2 times [2024-06-27 18:54:46,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:46,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236113132] [2024-06-27 18:54:46,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:46,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236113132] [2024-06-27 18:54:48,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236113132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:48,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:48,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:48,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719825038] [2024-06-27 18:54:48,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:48,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:48,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:48,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:48,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:54:48,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 643 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:48,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:48,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:54:48,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:49,622 INFO L124 PetriNetUnfolderBase]: 4107/6476 cut-off events. [2024-06-27 18:54:49,622 INFO L125 PetriNetUnfolderBase]: For 24787/24787 co-relation queries the response was YES. [2024-06-27 18:54:49,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22984 conditions, 6476 events. 4107/6476 cut-off events. For 24787/24787 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38419 event pairs, 1507 based on Foata normal form. 2/6293 useless extension candidates. Maximal degree in co-relation 22953. Up to 5662 conditions per place. [2024-06-27 18:54:49,659 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 107 selfloop transitions, 36 changer transitions 0/150 dead transitions. [2024-06-27 18:54:49,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 150 transitions, 1199 flow [2024-06-27 18:54:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:54:49,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:54:49,663 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 643 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:54:49,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 150 transitions, 1199 flow [2024-06-27 18:54:49,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 150 transitions, 1143 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:49,689 INFO L231 Difference]: Finished difference. Result has 85 places, 107 transitions, 823 flow [2024-06-27 18:54:49,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=85, PETRI_TRANSITIONS=107} [2024-06-27 18:54:49,690 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-27 18:54:49,690 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 107 transitions, 823 flow [2024-06-27 18:54:49,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:49,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:49,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:49,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:54:49,691 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:49,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1087414238, now seen corresponding path program 3 times [2024-06-27 18:54:49,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:49,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062258875] [2024-06-27 18:54:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:49,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:51,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:51,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062258875] [2024-06-27 18:54:51,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062258875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:51,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:51,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:51,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359041760] [2024-06-27 18:54:51,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:51,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:51,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:51,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:51,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:51,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:54:51,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 107 transitions, 823 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:51,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:51,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:54:51,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:52,896 INFO L124 PetriNetUnfolderBase]: 4102/6468 cut-off events. [2024-06-27 18:54:52,920 INFO L125 PetriNetUnfolderBase]: For 31724/31724 co-relation queries the response was YES. [2024-06-27 18:54:52,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24358 conditions, 6468 events. 4102/6468 cut-off events. For 31724/31724 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38423 event pairs, 1514 based on Foata normal form. 2/6285 useless extension candidates. Maximal degree in co-relation 24324. Up to 5740 conditions per place. [2024-06-27 18:54:52,966 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 114 selfloop transitions, 25 changer transitions 0/146 dead transitions. [2024-06-27 18:54:52,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 1199 flow [2024-06-27 18:54:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:54:52,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-27 18:54:52,968 INFO L175 Difference]: Start difference. First operand has 85 places, 107 transitions, 823 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:54:52,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 1199 flow [2024-06-27 18:54:52,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 146 transitions, 1111 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:52,998 INFO L231 Difference]: Finished difference. Result has 90 places, 107 transitions, 794 flow [2024-06-27 18:54:52,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=794, PETRI_PLACES=90, PETRI_TRANSITIONS=107} [2024-06-27 18:54:53,000 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-27 18:54:53,000 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 107 transitions, 794 flow [2024-06-27 18:54:53,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:53,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:53,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:53,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:54:53,003 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:53,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:53,003 INFO L85 PathProgramCache]: Analyzing trace with hash 361536373, now seen corresponding path program 1 times [2024-06-27 18:54:53,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:53,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411494575] [2024-06-27 18:54:53,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:53,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:54,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:54,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411494575] [2024-06-27 18:54:54,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411494575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:54,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:54,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:54:54,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061807766] [2024-06-27 18:54:54,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:54,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:54:54,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:54,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:54:54,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:54:54,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:54:54,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 107 transitions, 794 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:54,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:54,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:54:54,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:55,574 INFO L124 PetriNetUnfolderBase]: 2982/4869 cut-off events. [2024-06-27 18:54:55,574 INFO L125 PetriNetUnfolderBase]: For 25715/25730 co-relation queries the response was YES. [2024-06-27 18:54:55,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18728 conditions, 4869 events. 2982/4869 cut-off events. For 25715/25730 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 28990 event pairs, 1319 based on Foata normal form. 15/4731 useless extension candidates. Maximal degree in co-relation 18692. Up to 4243 conditions per place. [2024-06-27 18:54:55,602 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 99 selfloop transitions, 18 changer transitions 0/133 dead transitions. [2024-06-27 18:54:55,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 133 transitions, 1158 flow [2024-06-27 18:54:55,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:54:55,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:54:55,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-27 18:54:55,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-27 18:54:55,604 INFO L175 Difference]: Start difference. First operand has 90 places, 107 transitions, 794 flow. Second operand 5 states and 121 transitions. [2024-06-27 18:54:55,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 133 transitions, 1158 flow [2024-06-27 18:54:55,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 133 transitions, 1072 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:54:55,622 INFO L231 Difference]: Finished difference. Result has 90 places, 113 transitions, 834 flow [2024-06-27 18:54:55,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=834, PETRI_PLACES=90, PETRI_TRANSITIONS=113} [2024-06-27 18:54:55,622 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-27 18:54:55,623 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 113 transitions, 834 flow [2024-06-27 18:54:55,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:55,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:55,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:55,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:54:55,623 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:55,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1754294617, now seen corresponding path program 1 times [2024-06-27 18:54:55,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:55,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834853389] [2024-06-27 18:54:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:57,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834853389] [2024-06-27 18:54:57,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834853389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:57,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:57,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:57,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639810407] [2024-06-27 18:54:57,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:57,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:57,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:57,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:57,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:57,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 113 transitions, 834 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:57,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:57,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:57,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:58,594 INFO L124 PetriNetUnfolderBase]: 3318/5264 cut-off events. [2024-06-27 18:54:58,595 INFO L125 PetriNetUnfolderBase]: For 33265/33265 co-relation queries the response was YES. [2024-06-27 18:54:58,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21889 conditions, 5264 events. 3318/5264 cut-off events. For 33265/33265 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31346 event pairs, 902 based on Foata normal form. 4/5119 useless extension candidates. Maximal degree in co-relation 21851. Up to 4581 conditions per place. [2024-06-27 18:54:58,630 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 116 selfloop transitions, 37 changer transitions 0/161 dead transitions. [2024-06-27 18:54:58,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 161 transitions, 1392 flow [2024-06-27 18:54:58,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:54:58,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-27 18:54:58,633 INFO L175 Difference]: Start difference. First operand has 90 places, 113 transitions, 834 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:54:58,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 161 transitions, 1392 flow [2024-06-27 18:54:58,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 161 transitions, 1374 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 18:54:58,665 INFO L231 Difference]: Finished difference. Result has 96 places, 119 transitions, 1000 flow [2024-06-27 18:54:58,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1000, PETRI_PLACES=96, PETRI_TRANSITIONS=119} [2024-06-27 18:54:58,666 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-27 18:54:58,666 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 119 transitions, 1000 flow [2024-06-27 18:54:58,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:58,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:58,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:58,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:54:58,667 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:58,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:58,668 INFO L85 PathProgramCache]: Analyzing trace with hash 165383549, now seen corresponding path program 2 times [2024-06-27 18:54:58,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:58,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365489161] [2024-06-27 18:54:58,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:58,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:59,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:59,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365489161] [2024-06-27 18:54:59,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365489161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:59,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:59,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:59,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166292628] [2024-06-27 18:54:59,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:59,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:59,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:59,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:59,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:55:00,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:00,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 119 transitions, 1000 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:00,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:00,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:00,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:01,309 INFO L124 PetriNetUnfolderBase]: 3310/5252 cut-off events. [2024-06-27 18:55:01,309 INFO L125 PetriNetUnfolderBase]: For 37695/37695 co-relation queries the response was YES. [2024-06-27 18:55:01,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22644 conditions, 5252 events. 3310/5252 cut-off events. For 37695/37695 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31201 event pairs, 1248 based on Foata normal form. 4/5107 useless extension candidates. Maximal degree in co-relation 22603. Up to 4677 conditions per place. [2024-06-27 18:55:01,340 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 110 selfloop transitions, 31 changer transitions 0/149 dead transitions. [2024-06-27 18:55:01,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 149 transitions, 1360 flow [2024-06-27 18:55:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:55:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:55:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 18:55:01,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 18:55:01,342 INFO L175 Difference]: Start difference. First operand has 96 places, 119 transitions, 1000 flow. Second operand 6 states and 146 transitions. [2024-06-27 18:55:01,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 149 transitions, 1360 flow [2024-06-27 18:55:01,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 149 transitions, 1247 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 18:55:01,376 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 958 flow [2024-06-27 18:55:01,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=958, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2024-06-27 18:55:01,376 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-27 18:55:01,376 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 958 flow [2024-06-27 18:55:01,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:01,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:01,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:01,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:55:01,377 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:01,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:01,377 INFO L85 PathProgramCache]: Analyzing trace with hash 608679581, now seen corresponding path program 1 times [2024-06-27 18:55:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:01,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518196643] [2024-06-27 18:55:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:01,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:03,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:03,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518196643] [2024-06-27 18:55:03,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518196643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:03,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:03,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362852030] [2024-06-27 18:55:03,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:03,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:03,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:03,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 958 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:03,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:03,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:03,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:04,696 INFO L124 PetriNetUnfolderBase]: 3336/5288 cut-off events. [2024-06-27 18:55:04,696 INFO L125 PetriNetUnfolderBase]: For 38933/38933 co-relation queries the response was YES. [2024-06-27 18:55:04,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22823 conditions, 5288 events. 3336/5288 cut-off events. For 38933/38933 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31455 event pairs, 1187 based on Foata normal form. 2/5141 useless extension candidates. Maximal degree in co-relation 22780. Up to 4684 conditions per place. [2024-06-27 18:55:04,724 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 120 selfloop transitions, 33 changer transitions 0/161 dead transitions. [2024-06-27 18:55:04,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 161 transitions, 1434 flow [2024-06-27 18:55:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:55:04,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:55:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:55:04,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-27 18:55:04,726 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 958 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:55:04,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 161 transitions, 1434 flow [2024-06-27 18:55:04,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 161 transitions, 1363 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:04,753 INFO L231 Difference]: Finished difference. Result has 101 places, 123 transitions, 1039 flow [2024-06-27 18:55:04,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1039, PETRI_PLACES=101, PETRI_TRANSITIONS=123} [2024-06-27 18:55:04,754 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-27 18:55:04,754 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 123 transitions, 1039 flow [2024-06-27 18:55:04,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:04,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:04,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:04,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:55:04,755 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:04,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash 649892893, now seen corresponding path program 3 times [2024-06-27 18:55:04,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:04,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134797870] [2024-06-27 18:55:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:04,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:06,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134797870] [2024-06-27 18:55:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134797870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:06,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:06,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:55:06,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750959511] [2024-06-27 18:55:06,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:55:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:06,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:55:06,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:55:06,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:06,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 123 transitions, 1039 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:06,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:06,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:06,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:07,994 INFO L124 PetriNetUnfolderBase]: 3328/5276 cut-off events. [2024-06-27 18:55:07,995 INFO L125 PetriNetUnfolderBase]: For 44740/44740 co-relation queries the response was YES. [2024-06-27 18:55:08,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23754 conditions, 5276 events. 3328/5276 cut-off events. For 44740/44740 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31371 event pairs, 1194 based on Foata normal form. 4/5131 useless extension candidates. Maximal degree in co-relation 23710. Up to 4682 conditions per place. [2024-06-27 18:55:08,031 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 118 selfloop transitions, 38 changer transitions 0/164 dead transitions. [2024-06-27 18:55:08,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 164 transitions, 1505 flow [2024-06-27 18:55:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:55:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:55:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:55:08,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-27 18:55:08,033 INFO L175 Difference]: Start difference. First operand has 101 places, 123 transitions, 1039 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:55:08,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 164 transitions, 1505 flow [2024-06-27 18:55:08,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 164 transitions, 1399 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:08,068 INFO L231 Difference]: Finished difference. Result has 103 places, 126 transitions, 1082 flow [2024-06-27 18:55:08,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1082, PETRI_PLACES=103, PETRI_TRANSITIONS=126} [2024-06-27 18:55:08,068 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2024-06-27 18:55:08,068 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 126 transitions, 1082 flow [2024-06-27 18:55:08,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:08,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:08,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:08,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:55:08,069 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:08,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash -12371857, now seen corresponding path program 2 times [2024-06-27 18:55:08,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:08,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976521696] [2024-06-27 18:55:08,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:08,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:10,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:10,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976521696] [2024-06-27 18:55:10,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976521696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:10,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:10,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:10,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592706730] [2024-06-27 18:55:10,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:10,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:10,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:10,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:10,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:10,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:10,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 1082 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:10,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:10,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:10,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:12,050 INFO L124 PetriNetUnfolderBase]: 4273/6731 cut-off events. [2024-06-27 18:55:12,050 INFO L125 PetriNetUnfolderBase]: For 59582/59582 co-relation queries the response was YES. [2024-06-27 18:55:12,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29685 conditions, 6731 events. 4273/6731 cut-off events. For 59582/59582 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 39692 event pairs, 1349 based on Foata normal form. 2/6548 useless extension candidates. Maximal degree in co-relation 29640. Up to 5854 conditions per place. [2024-06-27 18:55:12,090 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 142 selfloop transitions, 48 changer transitions 0/197 dead transitions. [2024-06-27 18:55:12,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 197 transitions, 1763 flow [2024-06-27 18:55:12,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 18:55:12,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-27 18:55:12,093 INFO L175 Difference]: Start difference. First operand has 103 places, 126 transitions, 1082 flow. Second operand 9 states and 212 transitions. [2024-06-27 18:55:12,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 197 transitions, 1763 flow [2024-06-27 18:55:12,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 197 transitions, 1640 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:12,139 INFO L231 Difference]: Finished difference. Result has 109 places, 139 transitions, 1231 flow [2024-06-27 18:55:12,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1231, PETRI_PLACES=109, PETRI_TRANSITIONS=139} [2024-06-27 18:55:12,139 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-27 18:55:12,139 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 139 transitions, 1231 flow [2024-06-27 18:55:12,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:12,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:12,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:12,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:55:12,140 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:12,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:12,140 INFO L85 PathProgramCache]: Analyzing trace with hash 650108095, now seen corresponding path program 3 times [2024-06-27 18:55:12,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:12,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389693587] [2024-06-27 18:55:12,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:12,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:14,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:14,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389693587] [2024-06-27 18:55:14,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389693587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:14,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:14,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:14,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138644253] [2024-06-27 18:55:14,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:14,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:14,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:14,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:14,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:14,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 139 transitions, 1231 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:14,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:14,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:14,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:15,802 INFO L124 PetriNetUnfolderBase]: 3594/5599 cut-off events. [2024-06-27 18:55:15,803 INFO L125 PetriNetUnfolderBase]: For 60970/61018 co-relation queries the response was YES. [2024-06-27 18:55:15,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27370 conditions, 5599 events. 3594/5599 cut-off events. For 60970/61018 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 33126 event pairs, 1275 based on Foata normal form. 40/5500 useless extension candidates. Maximal degree in co-relation 27322. Up to 4859 conditions per place. [2024-06-27 18:55:15,838 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 132 selfloop transitions, 64 changer transitions 0/205 dead transitions. [2024-06-27 18:55:15,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 205 transitions, 2023 flow [2024-06-27 18:55:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 18:55:15,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 18:55:15,840 INFO L175 Difference]: Start difference. First operand has 109 places, 139 transitions, 1231 flow. Second operand 9 states and 220 transitions. [2024-06-27 18:55:15,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 205 transitions, 2023 flow [2024-06-27 18:55:15,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 205 transitions, 1893 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 18:55:15,884 INFO L231 Difference]: Finished difference. Result has 114 places, 147 transitions, 1420 flow [2024-06-27 18:55:15,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1420, PETRI_PLACES=114, PETRI_TRANSITIONS=147} [2024-06-27 18:55:15,884 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-27 18:55:15,884 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 147 transitions, 1420 flow [2024-06-27 18:55:15,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:15,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:15,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:15,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:55:15,885 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:15,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:15,886 INFO L85 PathProgramCache]: Analyzing trace with hash -269074177, now seen corresponding path program 4 times [2024-06-27 18:55:15,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:15,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117938268] [2024-06-27 18:55:15,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:15,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:17,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117938268] [2024-06-27 18:55:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117938268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:17,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:17,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:17,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205034457] [2024-06-27 18:55:17,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:17,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:17,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:17,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:17,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:17,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:17,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 147 transitions, 1420 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:17,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:17,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:17,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:19,778 INFO L124 PetriNetUnfolderBase]: 4400/6765 cut-off events. [2024-06-27 18:55:19,778 INFO L125 PetriNetUnfolderBase]: For 79198/79198 co-relation queries the response was YES. [2024-06-27 18:55:19,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33464 conditions, 6765 events. 4400/6765 cut-off events. For 79198/79198 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 39054 event pairs, 1360 based on Foata normal form. 2/6632 useless extension candidates. Maximal degree in co-relation 33415. Up to 6116 conditions per place. [2024-06-27 18:55:19,821 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 175 selfloop transitions, 37 changer transitions 0/219 dead transitions. [2024-06-27 18:55:19,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 219 transitions, 2223 flow [2024-06-27 18:55:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 18:55:19,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 18:55:19,823 INFO L175 Difference]: Start difference. First operand has 114 places, 147 transitions, 1420 flow. Second operand 9 states and 208 transitions. [2024-06-27 18:55:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 219 transitions, 2223 flow [2024-06-27 18:55:19,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 219 transitions, 2062 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:19,887 INFO L231 Difference]: Finished difference. Result has 121 places, 164 transitions, 1619 flow [2024-06-27 18:55:19,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1619, PETRI_PLACES=121, PETRI_TRANSITIONS=164} [2024-06-27 18:55:19,887 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-27 18:55:19,888 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 164 transitions, 1619 flow [2024-06-27 18:55:19,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:19,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:19,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:19,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:55:19,888 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:19,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 649898845, now seen corresponding path program 5 times [2024-06-27 18:55:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144834162] [2024-06-27 18:55:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:19,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:21,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144834162] [2024-06-27 18:55:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144834162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:21,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:21,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:21,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198762605] [2024-06-27 18:55:21,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:21,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:21,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:21,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:21,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:21,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 164 transitions, 1619 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:21,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:21,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:21,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:23,542 INFO L124 PetriNetUnfolderBase]: 4401/6766 cut-off events. [2024-06-27 18:55:23,542 INFO L125 PetriNetUnfolderBase]: For 81461/81461 co-relation queries the response was YES. [2024-06-27 18:55:23,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34091 conditions, 6766 events. 4401/6766 cut-off events. For 81461/81461 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 38988 event pairs, 1360 based on Foata normal form. 2/6633 useless extension candidates. Maximal degree in co-relation 34037. Up to 6062 conditions per place. [2024-06-27 18:55:23,588 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 148 selfloop transitions, 65 changer transitions 0/220 dead transitions. [2024-06-27 18:55:23,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 220 transitions, 2363 flow [2024-06-27 18:55:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:55:23,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:55:23,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:55:23,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-27 18:55:23,602 INFO L175 Difference]: Start difference. First operand has 121 places, 164 transitions, 1619 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:55:23,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 220 transitions, 2363 flow [2024-06-27 18:55:23,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 220 transitions, 2211 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-27 18:55:23,672 INFO L231 Difference]: Finished difference. Result has 127 places, 172 transitions, 1823 flow [2024-06-27 18:55:23,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1823, PETRI_PLACES=127, PETRI_TRANSITIONS=172} [2024-06-27 18:55:23,673 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-27 18:55:23,673 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 172 transitions, 1823 flow [2024-06-27 18:55:23,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:23,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:23,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:23,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:55:23,674 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:23,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:23,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1677272885, now seen corresponding path program 1 times [2024-06-27 18:55:23,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:23,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193548381] [2024-06-27 18:55:23,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:23,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:25,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193548381] [2024-06-27 18:55:25,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193548381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:25,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:25,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:55:25,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301591696] [2024-06-27 18:55:25,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:25,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:55:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:25,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:55:25,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:55:25,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:25,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 172 transitions, 1823 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:25,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:25,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:25,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:26,966 INFO L124 PetriNetUnfolderBase]: 4134/6641 cut-off events. [2024-06-27 18:55:26,967 INFO L125 PetriNetUnfolderBase]: For 88468/88474 co-relation queries the response was YES. [2024-06-27 18:55:26,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33912 conditions, 6641 events. 4134/6641 cut-off events. For 88468/88474 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 40171 event pairs, 1321 based on Foata normal form. 8/6467 useless extension candidates. Maximal degree in co-relation 33856. Up to 5831 conditions per place. [2024-06-27 18:55:27,010 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 183 selfloop transitions, 15 changer transitions 0/215 dead transitions. [2024-06-27 18:55:27,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 215 transitions, 2521 flow [2024-06-27 18:55:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:55:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:55:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:55:27,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-27 18:55:27,012 INFO L175 Difference]: Start difference. First operand has 127 places, 172 transitions, 1823 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:55:27,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 215 transitions, 2521 flow [2024-06-27 18:55:27,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 215 transitions, 2303 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-27 18:55:27,109 INFO L231 Difference]: Finished difference. Result has 131 places, 185 transitions, 1822 flow [2024-06-27 18:55:27,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1822, PETRI_PLACES=131, PETRI_TRANSITIONS=185} [2024-06-27 18:55:27,109 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-27 18:55:27,109 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 185 transitions, 1822 flow [2024-06-27 18:55:27,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:27,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:27,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:27,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:55:27,110 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:27,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:27,111 INFO L85 PathProgramCache]: Analyzing trace with hash -100646107, now seen corresponding path program 1 times [2024-06-27 18:55:27,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:27,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354897808] [2024-06-27 18:55:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:27,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:28,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:28,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354897808] [2024-06-27 18:55:28,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354897808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:28,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:28,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:28,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102803694] [2024-06-27 18:55:28,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:29,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:29,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:29,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:29,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:29,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:29,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 185 transitions, 1822 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:29,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:29,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:29,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:30,565 INFO L124 PetriNetUnfolderBase]: 4437/6850 cut-off events. [2024-06-27 18:55:30,565 INFO L125 PetriNetUnfolderBase]: For 92743/92743 co-relation queries the response was YES. [2024-06-27 18:55:30,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36568 conditions, 6850 events. 4437/6850 cut-off events. For 92743/92743 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 39590 event pairs, 901 based on Foata normal form. 4/6709 useless extension candidates. Maximal degree in co-relation 36508. Up to 6069 conditions per place. [2024-06-27 18:55:30,614 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 204 selfloop transitions, 34 changer transitions 0/245 dead transitions. [2024-06-27 18:55:30,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 245 transitions, 2556 flow [2024-06-27 18:55:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:55:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:55:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:55:30,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-27 18:55:30,616 INFO L175 Difference]: Start difference. First operand has 131 places, 185 transitions, 1822 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:55:30,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 245 transitions, 2556 flow [2024-06-27 18:55:30,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 245 transitions, 2530 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 18:55:30,692 INFO L231 Difference]: Finished difference. Result has 140 places, 196 transitions, 2040 flow [2024-06-27 18:55:30,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2040, PETRI_PLACES=140, PETRI_TRANSITIONS=196} [2024-06-27 18:55:30,693 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-27 18:55:30,693 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 196 transitions, 2040 flow [2024-06-27 18:55:30,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:30,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:30,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:30,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:55:30,694 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:30,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:30,694 INFO L85 PathProgramCache]: Analyzing trace with hash -942439133, now seen corresponding path program 2 times [2024-06-27 18:55:30,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:30,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961499799] [2024-06-27 18:55:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:30,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:32,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:32,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961499799] [2024-06-27 18:55:32,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961499799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:32,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:32,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:32,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517990426] [2024-06-27 18:55:32,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:32,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:32,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:32,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:32,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:32,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 196 transitions, 2040 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:32,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:32,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:32,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:34,202 INFO L124 PetriNetUnfolderBase]: 4479/6912 cut-off events. [2024-06-27 18:55:34,203 INFO L125 PetriNetUnfolderBase]: For 105732/105732 co-relation queries the response was YES. [2024-06-27 18:55:34,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38451 conditions, 6912 events. 4479/6912 cut-off events. For 105732/105732 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 40004 event pairs, 1249 based on Foata normal form. 4/6771 useless extension candidates. Maximal degree in co-relation 38386. Up to 6184 conditions per place. [2024-06-27 18:55:34,263 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 194 selfloop transitions, 38 changer transitions 0/239 dead transitions. [2024-06-27 18:55:34,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 239 transitions, 2707 flow [2024-06-27 18:55:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:55:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:55:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:55:34,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 18:55:34,265 INFO L175 Difference]: Start difference. First operand has 140 places, 196 transitions, 2040 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:55:34,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 239 transitions, 2707 flow [2024-06-27 18:55:34,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 239 transitions, 2564 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-27 18:55:34,387 INFO L231 Difference]: Finished difference. Result has 143 places, 199 transitions, 2069 flow [2024-06-27 18:55:34,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2069, PETRI_PLACES=143, PETRI_TRANSITIONS=199} [2024-06-27 18:55:34,387 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-27 18:55:34,388 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 199 transitions, 2069 flow [2024-06-27 18:55:34,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:34,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:34,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:34,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:55:34,388 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:34,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash -942616763, now seen corresponding path program 3 times [2024-06-27 18:55:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678847280] [2024-06-27 18:55:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:36,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:36,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678847280] [2024-06-27 18:55:36,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678847280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:36,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:36,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:36,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366004431] [2024-06-27 18:55:36,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:36,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:36,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:36,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:36,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:36,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:36,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 199 transitions, 2069 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:36,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:36,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:36,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:37,799 INFO L124 PetriNetUnfolderBase]: 4521/6974 cut-off events. [2024-06-27 18:55:37,799 INFO L125 PetriNetUnfolderBase]: For 117268/117268 co-relation queries the response was YES. [2024-06-27 18:55:37,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39463 conditions, 6974 events. 4521/6974 cut-off events. For 117268/117268 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 40380 event pairs, 1249 based on Foata normal form. 4/6833 useless extension candidates. Maximal degree in co-relation 39397. Up to 6286 conditions per place. [2024-06-27 18:55:37,857 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 207 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2024-06-27 18:55:37,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 243 transitions, 2740 flow [2024-06-27 18:55:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:55:37,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:55:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:55:37,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-27 18:55:37,859 INFO L175 Difference]: Start difference. First operand has 143 places, 199 transitions, 2069 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:55:37,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 243 transitions, 2740 flow [2024-06-27 18:55:37,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 243 transitions, 2592 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:37,979 INFO L231 Difference]: Finished difference. Result has 146 places, 203 transitions, 2091 flow [2024-06-27 18:55:37,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2091, PETRI_PLACES=146, PETRI_TRANSITIONS=203} [2024-06-27 18:55:37,980 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-27 18:55:37,980 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 203 transitions, 2091 flow [2024-06-27 18:55:37,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:37,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:37,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:37,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:55:37,981 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:37,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:37,981 INFO L85 PathProgramCache]: Analyzing trace with hash -942432189, now seen corresponding path program 1 times [2024-06-27 18:55:37,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:37,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798771180] [2024-06-27 18:55:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:37,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:40,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:40,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798771180] [2024-06-27 18:55:40,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798771180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:40,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:40,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:40,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420237752] [2024-06-27 18:55:40,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:40,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:40,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:40,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:40,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:40,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:40,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 203 transitions, 2091 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:40,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:40,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:40,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:42,182 INFO L124 PetriNetUnfolderBase]: 4368/6928 cut-off events. [2024-06-27 18:55:42,182 INFO L125 PetriNetUnfolderBase]: For 136451/136452 co-relation queries the response was YES. [2024-06-27 18:55:42,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40345 conditions, 6928 events. 4368/6928 cut-off events. For 136451/136452 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 41323 event pairs, 1093 based on Foata normal form. 16/6786 useless extension candidates. Maximal degree in co-relation 40277. Up to 5845 conditions per place. [2024-06-27 18:55:42,239 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 183 selfloop transitions, 71 changer transitions 0/267 dead transitions. [2024-06-27 18:55:42,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 267 transitions, 3121 flow [2024-06-27 18:55:42,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:55:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:55:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:55:42,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 18:55:42,241 INFO L175 Difference]: Start difference. First operand has 146 places, 203 transitions, 2091 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:55:42,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 267 transitions, 3121 flow [2024-06-27 18:55:42,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 267 transitions, 2989 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 18:55:42,372 INFO L231 Difference]: Finished difference. Result has 152 places, 216 transitions, 2505 flow [2024-06-27 18:55:42,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1959, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2505, PETRI_PLACES=152, PETRI_TRANSITIONS=216} [2024-06-27 18:55:42,372 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 98 predicate places. [2024-06-27 18:55:42,373 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 216 transitions, 2505 flow [2024-06-27 18:55:42,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:42,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:42,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:42,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:55:42,373 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:42,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:42,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1321721233, now seen corresponding path program 4 times [2024-06-27 18:55:42,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:42,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331020929] [2024-06-27 18:55:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:42,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:44,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:44,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331020929] [2024-06-27 18:55:44,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331020929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:44,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:44,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:44,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10443771] [2024-06-27 18:55:44,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:44,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:44,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:44,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:44,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 216 transitions, 2505 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:44,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:44,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:44,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:46,145 INFO L124 PetriNetUnfolderBase]: 4717/7323 cut-off events. [2024-06-27 18:55:46,145 INFO L125 PetriNetUnfolderBase]: For 155618/155618 co-relation queries the response was YES. [2024-06-27 18:55:46,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44633 conditions, 7323 events. 4717/7323 cut-off events. For 155618/155618 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42998 event pairs, 1280 based on Foata normal form. 4/7172 useless extension candidates. Maximal degree in co-relation 44562. Up to 6426 conditions per place. [2024-06-27 18:55:46,212 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 201 selfloop transitions, 60 changer transitions 0/268 dead transitions. [2024-06-27 18:55:46,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 268 transitions, 3282 flow [2024-06-27 18:55:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:55:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:55:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:55:46,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-27 18:55:46,214 INFO L175 Difference]: Start difference. First operand has 152 places, 216 transitions, 2505 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:55:46,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 268 transitions, 3282 flow [2024-06-27 18:55:46,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 268 transitions, 3012 flow, removed 105 selfloop flow, removed 4 redundant places. [2024-06-27 18:55:46,466 INFO L231 Difference]: Finished difference. Result has 156 places, 219 transitions, 2470 flow [2024-06-27 18:55:46,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2470, PETRI_PLACES=156, PETRI_TRANSITIONS=219} [2024-06-27 18:55:46,467 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 102 predicate places. [2024-06-27 18:55:46,467 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 219 transitions, 2470 flow [2024-06-27 18:55:46,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:46,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:46,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:46,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:55:46,468 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:46,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1327977343, now seen corresponding path program 5 times [2024-06-27 18:55:46,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:46,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888391246] [2024-06-27 18:55:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888391246] [2024-06-27 18:55:48,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888391246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:48,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:48,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:48,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099741889] [2024-06-27 18:55:48,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:48,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:48,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:48,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:48,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:48,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 219 transitions, 2470 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:48,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:48,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:48,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:50,223 INFO L124 PetriNetUnfolderBase]: 4759/7383 cut-off events. [2024-06-27 18:55:50,223 INFO L125 PetriNetUnfolderBase]: For 161185/161185 co-relation queries the response was YES. [2024-06-27 18:55:50,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45279 conditions, 7383 events. 4759/7383 cut-off events. For 161185/161185 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 43343 event pairs, 1301 based on Foata normal form. 4/7232 useless extension candidates. Maximal degree in co-relation 45207. Up to 6608 conditions per place. [2024-06-27 18:55:50,295 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 221 selfloop transitions, 42 changer transitions 0/270 dead transitions. [2024-06-27 18:55:50,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 270 transitions, 3241 flow [2024-06-27 18:55:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:55:50,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:55:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:55:50,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-27 18:55:50,297 INFO L175 Difference]: Start difference. First operand has 156 places, 219 transitions, 2470 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:55:50,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 270 transitions, 3241 flow [2024-06-27 18:55:50,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 270 transitions, 3032 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 18:55:50,501 INFO L231 Difference]: Finished difference. Result has 158 places, 222 transitions, 2466 flow [2024-06-27 18:55:50,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2466, PETRI_PLACES=158, PETRI_TRANSITIONS=222} [2024-06-27 18:55:50,503 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-06-27 18:55:50,503 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 222 transitions, 2466 flow [2024-06-27 18:55:50,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:50,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:50,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:50,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:55:50,504 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:50,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:50,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1328154973, now seen corresponding path program 6 times [2024-06-27 18:55:50,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:50,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156441342] [2024-06-27 18:55:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:50,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:52,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:52,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156441342] [2024-06-27 18:55:52,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156441342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:52,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:52,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:52,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347536300] [2024-06-27 18:55:52,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:52,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:52,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:52,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:52,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 222 transitions, 2466 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:52,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:52,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:52,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:54,186 INFO L124 PetriNetUnfolderBase]: 4756/7378 cut-off events. [2024-06-27 18:55:54,186 INFO L125 PetriNetUnfolderBase]: For 168809/168809 co-relation queries the response was YES. [2024-06-27 18:55:54,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45391 conditions, 7378 events. 4756/7378 cut-off events. For 168809/168809 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 43367 event pairs, 1293 based on Foata normal form. 4/7227 useless extension candidates. Maximal degree in co-relation 45318. Up to 6598 conditions per place. [2024-06-27 18:55:54,252 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 232 selfloop transitions, 37 changer transitions 0/276 dead transitions. [2024-06-27 18:55:54,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 276 transitions, 3265 flow [2024-06-27 18:55:54,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:55:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:55:54,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:55:54,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-27 18:55:54,254 INFO L175 Difference]: Start difference. First operand has 158 places, 222 transitions, 2466 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:55:54,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 276 transitions, 3265 flow [2024-06-27 18:55:54,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 276 transitions, 3086 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:55:54,437 INFO L231 Difference]: Finished difference. Result has 161 places, 228 transitions, 2522 flow [2024-06-27 18:55:54,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2522, PETRI_PLACES=161, PETRI_TRANSITIONS=228} [2024-06-27 18:55:54,438 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 18:55:54,438 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 228 transitions, 2522 flow [2024-06-27 18:55:54,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:54,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:54,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:54,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:55:54,439 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:54,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1321475279, now seen corresponding path program 2 times [2024-06-27 18:55:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:54,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597620411] [2024-06-27 18:55:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:54,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:56,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:56,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597620411] [2024-06-27 18:55:56,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597620411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:56,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:56,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:55:56,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231876175] [2024-06-27 18:55:56,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:56,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:55:56,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:55:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:55:56,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:56,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 228 transitions, 2522 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:56,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:56,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:56,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:58,721 INFO L124 PetriNetUnfolderBase]: 5011/7778 cut-off events. [2024-06-27 18:55:58,721 INFO L125 PetriNetUnfolderBase]: For 207280/207280 co-relation queries the response was YES. [2024-06-27 18:55:58,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49874 conditions, 7778 events. 5011/7778 cut-off events. For 207280/207280 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 46168 event pairs, 1160 based on Foata normal form. 12/7635 useless extension candidates. Maximal degree in co-relation 49799. Up to 5851 conditions per place. [2024-06-27 18:55:58,783 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 202 selfloop transitions, 93 changer transitions 0/302 dead transitions. [2024-06-27 18:55:58,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 302 transitions, 3743 flow [2024-06-27 18:55:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:55:58,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:55:58,787 INFO L175 Difference]: Start difference. First operand has 161 places, 228 transitions, 2522 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:55:58,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 302 transitions, 3743 flow [2024-06-27 18:55:58,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 302 transitions, 3558 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:59,001 INFO L231 Difference]: Finished difference. Result has 166 places, 234 transitions, 2809 flow [2024-06-27 18:55:59,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2809, PETRI_PLACES=166, PETRI_TRANSITIONS=234} [2024-06-27 18:55:59,002 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-27 18:55:59,002 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 234 transitions, 2809 flow [2024-06-27 18:55:59,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:59,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:59,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:59,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:55:59,003 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:59,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1321483649, now seen corresponding path program 3 times [2024-06-27 18:55:59,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:59,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430742301] [2024-06-27 18:55:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:59,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:01,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430742301] [2024-06-27 18:56:01,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430742301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:01,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:01,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:56:01,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170014492] [2024-06-27 18:56:01,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:01,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:56:01,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:01,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:56:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:56:01,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:01,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 234 transitions, 2809 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:01,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:01,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:01,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:03,276 INFO L124 PetriNetUnfolderBase]: 5159/8006 cut-off events. [2024-06-27 18:56:03,276 INFO L125 PetriNetUnfolderBase]: For 234793/234793 co-relation queries the response was YES. [2024-06-27 18:56:03,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52918 conditions, 8006 events. 5159/8006 cut-off events. For 234793/234793 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 47747 event pairs, 1378 based on Foata normal form. 16/7867 useless extension candidates. Maximal degree in co-relation 52841. Up to 6713 conditions per place. [2024-06-27 18:56:03,353 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 215 selfloop transitions, 85 changer transitions 0/307 dead transitions. [2024-06-27 18:56:03,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 307 transitions, 3792 flow [2024-06-27 18:56:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:56:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:56:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-06-27 18:56:03,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:56:03,355 INFO L175 Difference]: Start difference. First operand has 166 places, 234 transitions, 2809 flow. Second operand 10 states and 240 transitions. [2024-06-27 18:56:03,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 307 transitions, 3792 flow [2024-06-27 18:56:03,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 307 transitions, 3632 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:03,663 INFO L231 Difference]: Finished difference. Result has 171 places, 236 transitions, 2937 flow [2024-06-27 18:56:03,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2655, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2937, PETRI_PLACES=171, PETRI_TRANSITIONS=236} [2024-06-27 18:56:03,663 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-27 18:56:03,663 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 236 transitions, 2937 flow [2024-06-27 18:56:03,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:03,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:03,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:03,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:56:03,664 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:03,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:03,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1327970399, now seen corresponding path program 4 times [2024-06-27 18:56:03,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:03,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413850071] [2024-06-27 18:56:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:03,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:05,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:05,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413850071] [2024-06-27 18:56:05,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413850071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:05,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:56:05,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206861136] [2024-06-27 18:56:05,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:05,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:56:05,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:56:05,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:56:05,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:56:05,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 236 transitions, 2937 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:05,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:05,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:56:05,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:08,148 INFO L124 PetriNetUnfolderBase]: 4967/7851 cut-off events. [2024-06-27 18:56:08,148 INFO L125 PetriNetUnfolderBase]: For 240471/240472 co-relation queries the response was YES. [2024-06-27 18:56:08,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53059 conditions, 7851 events. 4967/7851 cut-off events. For 240471/240472 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 47550 event pairs, 1412 based on Foata normal form. 16/7709 useless extension candidates. Maximal degree in co-relation 52980. Up to 6842 conditions per place. [2024-06-27 18:56:08,224 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 213 selfloop transitions, 73 changer transitions 0/299 dead transitions. [2024-06-27 18:56:08,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 299 transitions, 3921 flow [2024-06-27 18:56:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:56:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:56:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 18:56:08,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 18:56:08,230 INFO L175 Difference]: Start difference. First operand has 171 places, 236 transitions, 2937 flow. Second operand 9 states and 220 transitions. [2024-06-27 18:56:08,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 299 transitions, 3921 flow [2024-06-27 18:56:08,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 299 transitions, 3721 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:56:08,521 INFO L231 Difference]: Finished difference. Result has 172 places, 240 transitions, 3101 flow [2024-06-27 18:56:08,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3101, PETRI_PLACES=172, PETRI_TRANSITIONS=240} [2024-06-27 18:56:08,521 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 118 predicate places. [2024-06-27 18:56:08,521 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 240 transitions, 3101 flow [2024-06-27 18:56:08,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:08,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:08,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:08,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:56:08,522 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:08,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:08,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1293694480, now seen corresponding path program 1 times [2024-06-27 18:56:08,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:08,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825496500] [2024-06-27 18:56:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:08,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:10,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:10,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825496500] [2024-06-27 18:56:10,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825496500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:10,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:10,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:56:10,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386583804] [2024-06-27 18:56:10,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:10,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:56:10,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:10,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:56:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:56:10,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:56:10,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 240 transitions, 3101 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:10,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:10,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:56:10,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:12,242 INFO L124 PetriNetUnfolderBase]: 5015/7991 cut-off events. [2024-06-27 18:56:12,243 INFO L125 PetriNetUnfolderBase]: For 239421/239422 co-relation queries the response was YES. [2024-06-27 18:56:12,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53281 conditions, 7991 events. 5015/7991 cut-off events. For 239421/239422 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 48711 event pairs, 1387 based on Foata normal form. 2/7815 useless extension candidates. Maximal degree in co-relation 53201. Up to 7172 conditions per place. [2024-06-27 18:56:12,313 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 242 selfloop transitions, 31 changer transitions 0/286 dead transitions. [2024-06-27 18:56:12,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 286 transitions, 4126 flow [2024-06-27 18:56:12,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:56:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:56:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:56:12,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 18:56:12,330 INFO L175 Difference]: Start difference. First operand has 172 places, 240 transitions, 3101 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:56:12,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 286 transitions, 4126 flow [2024-06-27 18:56:12,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 286 transitions, 3892 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-27 18:56:12,642 INFO L231 Difference]: Finished difference. Result has 173 places, 251 transitions, 3124 flow [2024-06-27 18:56:12,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3124, PETRI_PLACES=173, PETRI_TRANSITIONS=251} [2024-06-27 18:56:12,642 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-27 18:56:12,643 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 251 transitions, 3124 flow [2024-06-27 18:56:12,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:12,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:12,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:12,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:56:12,643 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:12,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:12,644 INFO L85 PathProgramCache]: Analyzing trace with hash -428153710, now seen corresponding path program 2 times [2024-06-27 18:56:12,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:12,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140304810] [2024-06-27 18:56:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:12,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:14,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140304810] [2024-06-27 18:56:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140304810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:14,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:14,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:56:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779268940] [2024-06-27 18:56:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:56:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:56:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:56:14,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:56:14,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 251 transitions, 3124 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:14,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:14,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:56:14,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:16,714 INFO L124 PetriNetUnfolderBase]: 5014/7958 cut-off events. [2024-06-27 18:56:16,714 INFO L125 PetriNetUnfolderBase]: For 235285/235328 co-relation queries the response was YES. [2024-06-27 18:56:16,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53377 conditions, 7958 events. 5014/7958 cut-off events. For 235285/235328 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 48352 event pairs, 1377 based on Foata normal form. 33/7819 useless extension candidates. Maximal degree in co-relation 53294. Up to 7167 conditions per place. [2024-06-27 18:56:16,780 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 235 selfloop transitions, 34 changer transitions 0/282 dead transitions. [2024-06-27 18:56:16,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 282 transitions, 3905 flow [2024-06-27 18:56:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:56:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:56:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 18:56:16,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:56:16,795 INFO L175 Difference]: Start difference. First operand has 173 places, 251 transitions, 3124 flow. Second operand 6 states and 140 transitions. [2024-06-27 18:56:16,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 282 transitions, 3905 flow [2024-06-27 18:56:17,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 282 transitions, 3893 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 18:56:17,090 INFO L231 Difference]: Finished difference. Result has 179 places, 255 transitions, 3268 flow [2024-06-27 18:56:17,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3268, PETRI_PLACES=179, PETRI_TRANSITIONS=255} [2024-06-27 18:56:17,090 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-27 18:56:17,090 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 255 transitions, 3268 flow [2024-06-27 18:56:17,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:17,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:17,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:17,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:56:17,091 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:17,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:17,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1702125716, now seen corresponding path program 1 times [2024-06-27 18:56:17,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:17,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843706932] [2024-06-27 18:56:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:17,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:19,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:19,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843706932] [2024-06-27 18:56:19,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843706932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:19,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:19,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:56:19,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702174589] [2024-06-27 18:56:19,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:19,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:56:19,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:19,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:56:19,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:56:19,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:19,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 255 transitions, 3268 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:19,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:19,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:19,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:21,955 INFO L124 PetriNetUnfolderBase]: 5421/8499 cut-off events. [2024-06-27 18:56:21,956 INFO L125 PetriNetUnfolderBase]: For 258631/258631 co-relation queries the response was YES. [2024-06-27 18:56:22,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57083 conditions, 8499 events. 5421/8499 cut-off events. For 258631/258631 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51369 event pairs, 951 based on Foata normal form. 12/8324 useless extension candidates. Maximal degree in co-relation 56996. Up to 7429 conditions per place. [2024-06-27 18:56:22,059 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 274 selfloop transitions, 37 changer transitions 0/318 dead transitions. [2024-06-27 18:56:22,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 318 transitions, 4177 flow [2024-06-27 18:56:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:56:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:56:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 18:56:22,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:56:22,061 INFO L175 Difference]: Start difference. First operand has 179 places, 255 transitions, 3268 flow. Second operand 9 states and 210 transitions. [2024-06-27 18:56:22,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 318 transitions, 4177 flow [2024-06-27 18:56:22,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 318 transitions, 4100 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-27 18:56:22,401 INFO L231 Difference]: Finished difference. Result has 186 places, 257 transitions, 3380 flow [2024-06-27 18:56:22,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3380, PETRI_PLACES=186, PETRI_TRANSITIONS=257} [2024-06-27 18:56:22,401 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-06-27 18:56:22,401 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 257 transitions, 3380 flow [2024-06-27 18:56:22,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:22,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:22,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:22,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:56:22,402 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:22,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash 849159804, now seen corresponding path program 2 times [2024-06-27 18:56:22,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:22,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856470506] [2024-06-27 18:56:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:24,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856470506] [2024-06-27 18:56:24,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856470506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:24,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:24,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:56:24,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760189931] [2024-06-27 18:56:24,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:24,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:56:24,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:24,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:56:24,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:56:24,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:56:24,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 257 transitions, 3380 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:24,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:24,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:56:24,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:27,014 INFO L124 PetriNetUnfolderBase]: 5235/8357 cut-off events. [2024-06-27 18:56:27,015 INFO L125 PetriNetUnfolderBase]: For 282758/282759 co-relation queries the response was YES. [2024-06-27 18:56:27,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58068 conditions, 8357 events. 5235/8357 cut-off events. For 282758/282759 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 51508 event pairs, 1429 based on Foata normal form. 12/8179 useless extension candidates. Maximal degree in co-relation 57979. Up to 7325 conditions per place. [2024-06-27 18:56:27,095 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 240 selfloop transitions, 62 changer transitions 0/315 dead transitions. [2024-06-27 18:56:27,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 315 transitions, 4500 flow [2024-06-27 18:56:27,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:27,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:56:27,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 18:56:27,097 INFO L175 Difference]: Start difference. First operand has 186 places, 257 transitions, 3380 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:56:27,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 315 transitions, 4500 flow [2024-06-27 18:56:27,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 315 transitions, 4339 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 18:56:27,439 INFO L231 Difference]: Finished difference. Result has 188 places, 264 transitions, 3713 flow [2024-06-27 18:56:27,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3713, PETRI_PLACES=188, PETRI_TRANSITIONS=264} [2024-06-27 18:56:27,439 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 18:56:27,440 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 264 transitions, 3713 flow [2024-06-27 18:56:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:27,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:27,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:27,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:56:27,440 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:27,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:27,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1986869542, now seen corresponding path program 3 times [2024-06-27 18:56:27,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:27,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389349910] [2024-06-27 18:56:27,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:27,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:29,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:29,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389349910] [2024-06-27 18:56:29,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389349910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:29,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:29,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:56:29,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873890900] [2024-06-27 18:56:29,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:29,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:56:29,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:29,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:56:29,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:56:29,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:29,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 264 transitions, 3713 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:29,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:29,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:29,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:32,033 INFO L124 PetriNetUnfolderBase]: 5656/8864 cut-off events. [2024-06-27 18:56:32,033 INFO L125 PetriNetUnfolderBase]: For 309189/309189 co-relation queries the response was YES. [2024-06-27 18:56:32,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61453 conditions, 8864 events. 5656/8864 cut-off events. For 309189/309189 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 54083 event pairs, 1482 based on Foata normal form. 12/8689 useless extension candidates. Maximal degree in co-relation 61362. Up to 7865 conditions per place. [2024-06-27 18:56:32,140 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 267 selfloop transitions, 48 changer transitions 0/322 dead transitions. [2024-06-27 18:56:32,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 322 transitions, 4764 flow [2024-06-27 18:56:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:32,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:56:32,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-27 18:56:32,146 INFO L175 Difference]: Start difference. First operand has 188 places, 264 transitions, 3713 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:56:32,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 322 transitions, 4764 flow [2024-06-27 18:56:32,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 322 transitions, 4424 flow, removed 138 selfloop flow, removed 4 redundant places. [2024-06-27 18:56:32,673 INFO L231 Difference]: Finished difference. Result has 193 places, 269 transitions, 3741 flow [2024-06-27 18:56:32,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3741, PETRI_PLACES=193, PETRI_TRANSITIONS=269} [2024-06-27 18:56:32,674 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-27 18:56:32,674 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 269 transitions, 3741 flow [2024-06-27 18:56:32,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:32,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:32,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:32,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:56:32,675 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:32,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1782377182, now seen corresponding path program 4 times [2024-06-27 18:56:32,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:32,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942914622] [2024-06-27 18:56:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:32,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:34,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:34,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942914622] [2024-06-27 18:56:34,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942914622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:34,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:34,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:56:34,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137944369] [2024-06-27 18:56:34,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:34,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:56:34,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:34,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:56:34,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:56:34,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:34,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 269 transitions, 3741 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:34,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:34,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:34,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:37,514 INFO L124 PetriNetUnfolderBase]: 5636/8832 cut-off events. [2024-06-27 18:56:37,515 INFO L125 PetriNetUnfolderBase]: For 303519/303519 co-relation queries the response was YES. [2024-06-27 18:56:37,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60617 conditions, 8832 events. 5636/8832 cut-off events. For 303519/303519 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 53851 event pairs, 1474 based on Foata normal form. 12/8657 useless extension candidates. Maximal degree in co-relation 60523. Up to 7817 conditions per place. [2024-06-27 18:56:37,610 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 278 selfloop transitions, 44 changer transitions 0/329 dead transitions. [2024-06-27 18:56:37,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 329 transitions, 4582 flow [2024-06-27 18:56:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:56:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:56:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 18:56:37,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:56:37,613 INFO L175 Difference]: Start difference. First operand has 193 places, 269 transitions, 3741 flow. Second operand 9 states and 210 transitions. [2024-06-27 18:56:37,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 329 transitions, 4582 flow [2024-06-27 18:56:38,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 329 transitions, 4291 flow, removed 121 selfloop flow, removed 4 redundant places. [2024-06-27 18:56:38,245 INFO L231 Difference]: Finished difference. Result has 198 places, 269 transitions, 3545 flow [2024-06-27 18:56:38,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3450, PETRI_DIFFERENCE_MINUEND_PLACES=189, 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=9, PETRI_FLOW=3545, PETRI_PLACES=198, PETRI_TRANSITIONS=269} [2024-06-27 18:56:38,246 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-27 18:56:38,246 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 269 transitions, 3545 flow [2024-06-27 18:56:38,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:38,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:38,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:38,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:56:38,247 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:38,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:38,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1776870652, now seen corresponding path program 5 times [2024-06-27 18:56:38,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:38,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200970624] [2024-06-27 18:56:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:38,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:40,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:40,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200970624] [2024-06-27 18:56:40,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200970624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:40,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:40,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:56:40,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433688746] [2024-06-27 18:56:40,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:40,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:56:40,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:40,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:56:40,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:56:40,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:56:40,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 269 transitions, 3545 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:40,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:40,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:56:40,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:42,895 INFO L124 PetriNetUnfolderBase]: 5319/8485 cut-off events. [2024-06-27 18:56:42,896 INFO L125 PetriNetUnfolderBase]: For 284188/284189 co-relation queries the response was YES. [2024-06-27 18:56:42,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57852 conditions, 8485 events. 5319/8485 cut-off events. For 284188/284189 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 52359 event pairs, 1449 based on Foata normal form. 12/8307 useless extension candidates. Maximal degree in co-relation 57756. Up to 7455 conditions per place. [2024-06-27 18:56:42,994 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 277 selfloop transitions, 39 changer transitions 0/329 dead transitions. [2024-06-27 18:56:42,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 329 transitions, 4405 flow [2024-06-27 18:56:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:56:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:56:42,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 18:56:42,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-27 18:56:42,995 INFO L175 Difference]: Start difference. First operand has 198 places, 269 transitions, 3545 flow. Second operand 9 states and 214 transitions. [2024-06-27 18:56:42,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 329 transitions, 4405 flow [2024-06-27 18:56:43,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 329 transitions, 4264 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 18:56:43,461 INFO L231 Difference]: Finished difference. Result has 199 places, 270 transitions, 3543 flow [2024-06-27 18:56:43,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3543, PETRI_PLACES=199, PETRI_TRANSITIONS=270} [2024-06-27 18:56:43,462 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-27 18:56:43,462 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 270 transitions, 3543 flow [2024-06-27 18:56:43,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:43,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:43,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:43,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:56:43,463 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:43,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:43,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1259807734, now seen corresponding path program 1 times [2024-06-27 18:56:43,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:43,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434934819] [2024-06-27 18:56:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:43,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:45,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:45,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434934819] [2024-06-27 18:56:45,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434934819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:45,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:45,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:56:45,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661486923] [2024-06-27 18:56:45,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:45,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:56:45,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:45,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:56:45,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:56:45,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:56:45,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 270 transitions, 3543 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:45,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:45,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:56:45,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:47,852 INFO L124 PetriNetUnfolderBase]: 5428/8611 cut-off events. [2024-06-27 18:56:47,853 INFO L125 PetriNetUnfolderBase]: For 288709/288737 co-relation queries the response was YES. [2024-06-27 18:56:47,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58114 conditions, 8611 events. 5428/8611 cut-off events. For 288709/288737 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 53538 event pairs, 1444 based on Foata normal form. 31/8438 useless extension candidates. Maximal degree in co-relation 58017. Up to 7614 conditions per place. [2024-06-27 18:56:47,947 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 240 selfloop transitions, 36 changer transitions 0/301 dead transitions. [2024-06-27 18:56:47,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 301 transitions, 4339 flow [2024-06-27 18:56:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:56:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:56:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 18:56:47,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 18:56:47,948 INFO L175 Difference]: Start difference. First operand has 199 places, 270 transitions, 3543 flow. Second operand 6 states and 141 transitions. [2024-06-27 18:56:47,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 301 transitions, 4339 flow [2024-06-27 18:56:48,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 301 transitions, 4168 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 18:56:48,382 INFO L231 Difference]: Finished difference. Result has 198 places, 273 transitions, 3501 flow [2024-06-27 18:56:48,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3372, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3501, PETRI_PLACES=198, PETRI_TRANSITIONS=273} [2024-06-27 18:56:48,391 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-27 18:56:48,391 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 273 transitions, 3501 flow [2024-06-27 18:56:48,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:48,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:48,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:48,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:56:48,392 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:48,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1690166616, now seen corresponding path program 2 times [2024-06-27 18:56:48,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:48,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642594812] [2024-06-27 18:56:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:48,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:50,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:50,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642594812] [2024-06-27 18:56:50,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642594812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:50,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:50,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:56:50,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300224052] [2024-06-27 18:56:50,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:50,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:56:50,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:50,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:56:50,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:56:50,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:56:50,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 273 transitions, 3501 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:50,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:50,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:56:50,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:53,253 INFO L124 PetriNetUnfolderBase]: 5416/8593 cut-off events. [2024-06-27 18:56:53,253 INFO L125 PetriNetUnfolderBase]: For 277698/277726 co-relation queries the response was YES. [2024-06-27 18:56:53,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57831 conditions, 8593 events. 5416/8593 cut-off events. For 277698/277726 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 53413 event pairs, 1442 based on Foata normal form. 31/8424 useless extension candidates. Maximal degree in co-relation 57733. Up to 7560 conditions per place. [2024-06-27 18:56:53,339 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 248 selfloop transitions, 39 changer transitions 0/312 dead transitions. [2024-06-27 18:56:53,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 312 transitions, 4413 flow [2024-06-27 18:56:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:56:53,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-27 18:56:53,340 INFO L175 Difference]: Start difference. First operand has 198 places, 273 transitions, 3501 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:56:53,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 312 transitions, 4413 flow [2024-06-27 18:56:53,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 312 transitions, 4332 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:56:53,700 INFO L231 Difference]: Finished difference. Result has 201 places, 276 transitions, 3556 flow [2024-06-27 18:56:53,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3556, PETRI_PLACES=201, PETRI_TRANSITIONS=276} [2024-06-27 18:56:53,701 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2024-06-27 18:56:53,702 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 276 transitions, 3556 flow [2024-06-27 18:56:53,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:53,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:53,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:53,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:56:53,702 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:53,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1449941932, now seen corresponding path program 1 times [2024-06-27 18:56:53,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:53,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320750128] [2024-06-27 18:56:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:53,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:55,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:55,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320750128] [2024-06-27 18:56:55,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320750128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:55,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:55,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:56:55,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899951776] [2024-06-27 18:56:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:55,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:56:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:56:55,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:56:55,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:56:55,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 276 transitions, 3556 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:55,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:55,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:56:55,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:58,114 INFO L124 PetriNetUnfolderBase]: 5435/8671 cut-off events. [2024-06-27 18:56:58,115 INFO L125 PetriNetUnfolderBase]: For 282938/282961 co-relation queries the response was YES. [2024-06-27 18:56:58,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59143 conditions, 8671 events. 5435/8671 cut-off events. For 282938/282961 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53722 event pairs, 1486 based on Foata normal form. 18/8483 useless extension candidates. Maximal degree in co-relation 59044. Up to 7830 conditions per place. [2024-06-27 18:56:58,231 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 278 selfloop transitions, 28 changer transitions 0/319 dead transitions. [2024-06-27 18:56:58,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 319 transitions, 4486 flow [2024-06-27 18:56:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 18:56:58,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-27 18:56:58,239 INFO L175 Difference]: Start difference. First operand has 201 places, 276 transitions, 3556 flow. Second operand 7 states and 162 transitions. [2024-06-27 18:56:58,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 319 transitions, 4486 flow [2024-06-27 18:56:58,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 319 transitions, 4398 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:58,760 INFO L231 Difference]: Finished difference. Result has 204 places, 282 transitions, 3699 flow [2024-06-27 18:56:58,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3699, PETRI_PLACES=204, PETRI_TRANSITIONS=282} [2024-06-27 18:56:58,760 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-27 18:56:58,761 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 282 transitions, 3699 flow [2024-06-27 18:56:58,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:58,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:58,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:58,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:56:58,761 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:58,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:58,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1449821962, now seen corresponding path program 2 times [2024-06-27 18:56:58,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:58,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68038041] [2024-06-27 18:56:58,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:58,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:00,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:00,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68038041] [2024-06-27 18:57:00,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68038041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:00,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:00,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:00,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108307974] [2024-06-27 18:57:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:00,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:00,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:00,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 282 transitions, 3699 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:00,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:00,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:00,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:03,024 INFO L124 PetriNetUnfolderBase]: 5537/8824 cut-off events. [2024-06-27 18:57:03,024 INFO L125 PetriNetUnfolderBase]: For 302584/302607 co-relation queries the response was YES. [2024-06-27 18:57:03,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61487 conditions, 8824 events. 5537/8824 cut-off events. For 302584/302607 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 54743 event pairs, 1486 based on Foata normal form. 18/8636 useless extension candidates. Maximal degree in co-relation 61386. Up to 7938 conditions per place. [2024-06-27 18:57:03,132 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 293 selfloop transitions, 37 changer transitions 0/343 dead transitions. [2024-06-27 18:57:03,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 343 transitions, 5003 flow [2024-06-27 18:57:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:57:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:57:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:57:03,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-06-27 18:57:03,148 INFO L175 Difference]: Start difference. First operand has 204 places, 282 transitions, 3699 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:57:03,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 343 transitions, 5003 flow [2024-06-27 18:57:03,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 343 transitions, 4900 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 18:57:03,706 INFO L231 Difference]: Finished difference. Result has 213 places, 306 transitions, 4129 flow [2024-06-27 18:57:03,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3596, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4129, PETRI_PLACES=213, PETRI_TRANSITIONS=306} [2024-06-27 18:57:03,707 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 159 predicate places. [2024-06-27 18:57:03,707 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 306 transitions, 4129 flow [2024-06-27 18:57:03,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:03,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:03,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:03,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:57:03,708 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:03,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:03,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2061019396, now seen corresponding path program 1 times [2024-06-27 18:57:03,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:03,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144817796] [2024-06-27 18:57:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:03,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:05,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144817796] [2024-06-27 18:57:05,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144817796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:05,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014768261] [2024-06-27 18:57:05,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:05,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:05,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:05,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:05,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:05,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:57:05,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 306 transitions, 4129 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:05,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:05,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:57:05,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:08,440 INFO L124 PetriNetUnfolderBase]: 5935/9270 cut-off events. [2024-06-27 18:57:08,440 INFO L125 PetriNetUnfolderBase]: For 319574/319574 co-relation queries the response was YES. [2024-06-27 18:57:08,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65847 conditions, 9270 events. 5935/9270 cut-off events. For 319574/319574 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 56436 event pairs, 1476 based on Foata normal form. 2/9083 useless extension candidates. Maximal degree in co-relation 65740. Up to 8417 conditions per place. [2024-06-27 18:57:08,537 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 338 selfloop transitions, 32 changer transitions 0/377 dead transitions. [2024-06-27 18:57:08,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 377 transitions, 5743 flow [2024-06-27 18:57:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:57:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:57:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:57:08,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 18:57:08,539 INFO L175 Difference]: Start difference. First operand has 213 places, 306 transitions, 4129 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:57:08,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 377 transitions, 5743 flow [2024-06-27 18:57:09,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 377 transitions, 5543 flow, removed 99 selfloop flow, removed 1 redundant places. [2024-06-27 18:57:09,083 INFO L231 Difference]: Finished difference. Result has 221 places, 325 transitions, 4381 flow [2024-06-27 18:57:09,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3979, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4381, PETRI_PLACES=221, PETRI_TRANSITIONS=325} [2024-06-27 18:57:09,084 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-27 18:57:09,084 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 325 transitions, 4381 flow [2024-06-27 18:57:09,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:09,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:09,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:09,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:57:09,084 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:09,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash -387594772, now seen corresponding path program 2 times [2024-06-27 18:57:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:09,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075094931] [2024-06-27 18:57:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:09,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:11,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:11,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075094931] [2024-06-27 18:57:11,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075094931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:11,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:11,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:11,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463402256] [2024-06-27 18:57:11,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:11,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:11,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:57:11,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 325 transitions, 4381 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:11,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:11,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:57:11,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:13,690 INFO L124 PetriNetUnfolderBase]: 5981/9352 cut-off events. [2024-06-27 18:57:13,691 INFO L125 PetriNetUnfolderBase]: For 327803/327817 co-relation queries the response was YES. [2024-06-27 18:57:13,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67069 conditions, 9352 events. 5981/9352 cut-off events. For 327803/327817 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 57183 event pairs, 1479 based on Foata normal form. 16/9172 useless extension candidates. Maximal degree in co-relation 66957. Up to 8457 conditions per place. [2024-06-27 18:57:13,802 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 328 selfloop transitions, 41 changer transitions 0/376 dead transitions. [2024-06-27 18:57:13,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 376 transitions, 5642 flow [2024-06-27 18:57:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:57:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:57:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-27 18:57:13,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401041666666667 [2024-06-27 18:57:13,812 INFO L175 Difference]: Start difference. First operand has 221 places, 325 transitions, 4381 flow. Second operand 8 states and 169 transitions. [2024-06-27 18:57:13,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 376 transitions, 5642 flow [2024-06-27 18:57:14,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 376 transitions, 5580 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:57:14,368 INFO L231 Difference]: Finished difference. Result has 228 places, 334 transitions, 4520 flow [2024-06-27 18:57:14,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4333, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4520, PETRI_PLACES=228, PETRI_TRANSITIONS=334} [2024-06-27 18:57:14,370 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-27 18:57:14,370 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 334 transitions, 4520 flow [2024-06-27 18:57:14,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:14,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:14,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:14,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:57:14,371 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:14,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1444257586, now seen corresponding path program 3 times [2024-06-27 18:57:14,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:14,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586369695] [2024-06-27 18:57:14,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:14,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:16,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:16,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586369695] [2024-06-27 18:57:16,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586369695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:16,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:16,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:16,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844568059] [2024-06-27 18:57:16,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:16,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:16,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:16,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:57:16,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 334 transitions, 4520 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:16,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:16,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:57:16,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:19,063 INFO L124 PetriNetUnfolderBase]: 5975/9344 cut-off events. [2024-06-27 18:57:19,063 INFO L125 PetriNetUnfolderBase]: For 331410/331424 co-relation queries the response was YES. [2024-06-27 18:57:19,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66928 conditions, 9344 events. 5975/9344 cut-off events. For 331410/331424 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 57134 event pairs, 1478 based on Foata normal form. 16/9164 useless extension candidates. Maximal degree in co-relation 66813. Up to 8452 conditions per place. [2024-06-27 18:57:19,177 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 332 selfloop transitions, 38 changer transitions 0/377 dead transitions. [2024-06-27 18:57:19,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 377 transitions, 5640 flow [2024-06-27 18:57:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:57:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:57:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:57:19,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-27 18:57:19,179 INFO L175 Difference]: Start difference. First operand has 228 places, 334 transitions, 4520 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:57:19,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 377 transitions, 5640 flow [2024-06-27 18:57:19,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 377 transitions, 5594 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 18:57:19,833 INFO L231 Difference]: Finished difference. Result has 233 places, 334 transitions, 4557 flow [2024-06-27 18:57:19,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4474, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4557, PETRI_PLACES=233, PETRI_TRANSITIONS=334} [2024-06-27 18:57:19,834 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 179 predicate places. [2024-06-27 18:57:19,834 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 334 transitions, 4557 flow [2024-06-27 18:57:19,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:19,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:19,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:19,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:57:19,835 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:19,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1224286492, now seen corresponding path program 3 times [2024-06-27 18:57:19,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:19,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664570979] [2024-06-27 18:57:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:19,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:21,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:21,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664570979] [2024-06-27 18:57:21,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664570979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:21,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:21,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223691677] [2024-06-27 18:57:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:21,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:21,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:21,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:21,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 334 transitions, 4557 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:21,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:21,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:21,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:24,191 INFO L124 PetriNetUnfolderBase]: 5669/9007 cut-off events. [2024-06-27 18:57:24,191 INFO L125 PetriNetUnfolderBase]: For 337522/337610 co-relation queries the response was YES. [2024-06-27 18:57:24,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65262 conditions, 9007 events. 5669/9007 cut-off events. For 337522/337610 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56074 event pairs, 1516 based on Foata normal form. 64/8855 useless extension candidates. Maximal degree in co-relation 65145. Up to 8081 conditions per place. [2024-06-27 18:57:24,295 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 307 selfloop transitions, 37 changer transitions 0/364 dead transitions. [2024-06-27 18:57:24,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 364 transitions, 5437 flow [2024-06-27 18:57:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:57:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:57:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 18:57:24,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:57:24,297 INFO L175 Difference]: Start difference. First operand has 233 places, 334 transitions, 4557 flow. Second operand 7 states and 154 transitions. [2024-06-27 18:57:24,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 364 transitions, 5437 flow [2024-06-27 18:57:24,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 364 transitions, 5362 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 18:57:24,777 INFO L231 Difference]: Finished difference. Result has 235 places, 337 transitions, 4627 flow [2024-06-27 18:57:24,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4627, PETRI_PLACES=235, PETRI_TRANSITIONS=337} [2024-06-27 18:57:24,777 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-27 18:57:24,777 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 337 transitions, 4627 flow [2024-06-27 18:57:24,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:24,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:24,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:24,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:57:24,778 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:24,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1246459382, now seen corresponding path program 1 times [2024-06-27 18:57:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720132391] [2024-06-27 18:57:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:27,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720132391] [2024-06-27 18:57:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720132391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:27,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:57:27,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572097426] [2024-06-27 18:57:27,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:27,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:57:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:27,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:57:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:57:27,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:27,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 337 transitions, 4627 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:27,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:27,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:27,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:30,460 INFO L124 PetriNetUnfolderBase]: 5725/9073 cut-off events. [2024-06-27 18:57:30,461 INFO L125 PetriNetUnfolderBase]: For 340120/340139 co-relation queries the response was YES. [2024-06-27 18:57:30,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65770 conditions, 9073 events. 5725/9073 cut-off events. For 340120/340139 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 56621 event pairs, 1455 based on Foata normal form. 21/8880 useless extension candidates. Maximal degree in co-relation 65652. Up to 8051 conditions per place. [2024-06-27 18:57:30,572 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 323 selfloop transitions, 20 changer transitions 0/376 dead transitions. [2024-06-27 18:57:30,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 376 transitions, 5648 flow [2024-06-27 18:57:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:57:30,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:57:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:57:30,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-27 18:57:30,574 INFO L175 Difference]: Start difference. First operand has 235 places, 337 transitions, 4627 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:57:30,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 376 transitions, 5648 flow [2024-06-27 18:57:31,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 376 transitions, 5531 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 18:57:31,190 INFO L231 Difference]: Finished difference. Result has 238 places, 339 transitions, 4586 flow [2024-06-27 18:57:31,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4517, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4586, PETRI_PLACES=238, PETRI_TRANSITIONS=339} [2024-06-27 18:57:31,191 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-27 18:57:31,191 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 339 transitions, 4586 flow [2024-06-27 18:57:31,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:31,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:31,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:31,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:57:31,191 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:31,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1998615857, now seen corresponding path program 1 times [2024-06-27 18:57:31,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:31,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419869364] [2024-06-27 18:57:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:31,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:33,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:33,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419869364] [2024-06-27 18:57:33,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419869364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:33,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:33,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:57:33,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897350633] [2024-06-27 18:57:33,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:33,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:57:33,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:33,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:57:33,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:57:33,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:33,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 339 transitions, 4586 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:33,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:33,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:33,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:36,742 INFO L124 PetriNetUnfolderBase]: 5779/9175 cut-off events. [2024-06-27 18:57:36,742 INFO L125 PetriNetUnfolderBase]: For 352068/352095 co-relation queries the response was YES. [2024-06-27 18:57:36,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67479 conditions, 9175 events. 5779/9175 cut-off events. For 352068/352095 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 57135 event pairs, 1428 based on Foata normal form. 18/8976 useless extension candidates. Maximal degree in co-relation 67360. Up to 7908 conditions per place. [2024-06-27 18:57:36,852 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 302 selfloop transitions, 87 changer transitions 0/410 dead transitions. [2024-06-27 18:57:36,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 410 transitions, 6261 flow [2024-06-27 18:57:36,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:57:36,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:57:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:57:36,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 18:57:36,854 INFO L175 Difference]: Start difference. First operand has 238 places, 339 transitions, 4586 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:57:36,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 410 transitions, 6261 flow [2024-06-27 18:57:37,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 410 transitions, 6212 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:57:37,504 INFO L231 Difference]: Finished difference. Result has 243 places, 354 transitions, 5121 flow [2024-06-27 18:57:37,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4537, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5121, PETRI_PLACES=243, PETRI_TRANSITIONS=354} [2024-06-27 18:57:37,505 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2024-06-27 18:57:37,505 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 354 transitions, 5121 flow [2024-06-27 18:57:37,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:37,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:37,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:37,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:57:37,506 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:37,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash 529184613, now seen corresponding path program 2 times [2024-06-27 18:57:37,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:37,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320266310] [2024-06-27 18:57:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:37,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:41,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:41,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320266310] [2024-06-27 18:57:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320266310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:41,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:41,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:57:41,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864483367] [2024-06-27 18:57:41,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:41,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:57:41,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:41,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:57:41,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:57:41,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:41,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 354 transitions, 5121 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:41,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:41,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:41,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:43,584 INFO L124 PetriNetUnfolderBase]: 5784/9193 cut-off events. [2024-06-27 18:57:43,584 INFO L125 PetriNetUnfolderBase]: For 369311/369338 co-relation queries the response was YES. [2024-06-27 18:57:43,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69561 conditions, 9193 events. 5784/9193 cut-off events. For 369311/369338 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 57528 event pairs, 1437 based on Foata normal form. 18/8991 useless extension candidates. Maximal degree in co-relation 69439. Up to 8082 conditions per place. [2024-06-27 18:57:43,701 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 323 selfloop transitions, 51 changer transitions 0/395 dead transitions. [2024-06-27 18:57:43,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 395 transitions, 6153 flow [2024-06-27 18:57:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:57:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:57:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:57:43,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 18:57:43,703 INFO L175 Difference]: Start difference. First operand has 243 places, 354 transitions, 5121 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:57:43,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 395 transitions, 6153 flow [2024-06-27 18:57:44,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 395 transitions, 6000 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:57:44,466 INFO L231 Difference]: Finished difference. Result has 246 places, 357 transitions, 5136 flow [2024-06-27 18:57:44,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4968, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5136, PETRI_PLACES=246, PETRI_TRANSITIONS=357} [2024-06-27 18:57:44,467 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 192 predicate places. [2024-06-27 18:57:44,467 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 357 transitions, 5136 flow [2024-06-27 18:57:44,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:44,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:44,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:44,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:57:44,471 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:44,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:44,471 INFO L85 PathProgramCache]: Analyzing trace with hash 529184768, now seen corresponding path program 1 times [2024-06-27 18:57:44,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:44,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630474088] [2024-06-27 18:57:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:47,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630474088] [2024-06-27 18:57:47,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630474088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:47,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:47,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:57:47,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585625630] [2024-06-27 18:57:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:47,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:57:47,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:47,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:57:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:57:47,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:57:47,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 357 transitions, 5136 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:47,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:47,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:57:47,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:49,818 INFO L124 PetriNetUnfolderBase]: 6184/9645 cut-off events. [2024-06-27 18:57:49,818 INFO L125 PetriNetUnfolderBase]: For 385994/385994 co-relation queries the response was YES. [2024-06-27 18:57:49,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73548 conditions, 9645 events. 6184/9645 cut-off events. For 385994/385994 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 59203 event pairs, 1468 based on Foata normal form. 2/9442 useless extension candidates. Maximal degree in co-relation 73425. Up to 8692 conditions per place. [2024-06-27 18:57:49,932 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 392 selfloop transitions, 48 changer transitions 0/447 dead transitions. [2024-06-27 18:57:49,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 447 transitions, 7035 flow [2024-06-27 18:57:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:57:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:57:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 196 transitions. [2024-06-27 18:57:49,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-27 18:57:49,933 INFO L175 Difference]: Start difference. First operand has 246 places, 357 transitions, 5136 flow. Second operand 9 states and 196 transitions. [2024-06-27 18:57:49,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 447 transitions, 7035 flow [2024-06-27 18:57:50,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 447 transitions, 6896 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:57:50,642 INFO L231 Difference]: Finished difference. Result has 254 places, 394 transitions, 5770 flow [2024-06-27 18:57:50,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5022, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5770, PETRI_PLACES=254, PETRI_TRANSITIONS=394} [2024-06-27 18:57:50,643 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-27 18:57:50,643 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 394 transitions, 5770 flow [2024-06-27 18:57:50,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:50,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:50,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:50,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:57:50,644 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:50,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:50,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1994800842, now seen corresponding path program 2 times [2024-06-27 18:57:50,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:50,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316967825] [2024-06-27 18:57:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:50,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:52,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316967825] [2024-06-27 18:57:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316967825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:52,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:52,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:57:52,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945577575] [2024-06-27 18:57:52,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:52,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:57:52,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:52,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:57:52,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:57:52,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:57:52,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 394 transitions, 5770 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:52,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:52,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:57:52,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:55,763 INFO L124 PetriNetUnfolderBase]: 6230/9727 cut-off events. [2024-06-27 18:57:55,764 INFO L125 PetriNetUnfolderBase]: For 406484/406484 co-relation queries the response was YES. [2024-06-27 18:57:55,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76490 conditions, 9727 events. 6230/9727 cut-off events. For 406484/406484 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 59909 event pairs, 1512 based on Foata normal form. 2/9520 useless extension candidates. Maximal degree in co-relation 76362. Up to 8889 conditions per place. [2024-06-27 18:57:55,913 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 389 selfloop transitions, 38 changer transitions 0/434 dead transitions. [2024-06-27 18:57:55,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 434 transitions, 6877 flow [2024-06-27 18:57:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:57:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:57:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-27 18:57:55,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 18:57:55,914 INFO L175 Difference]: Start difference. First operand has 254 places, 394 transitions, 5770 flow. Second operand 9 states and 184 transitions. [2024-06-27 18:57:55,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 434 transitions, 6877 flow [2024-06-27 18:57:56,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 434 transitions, 6760 flow, removed 56 selfloop flow, removed 2 redundant places. [2024-06-27 18:57:56,855 INFO L231 Difference]: Finished difference. Result has 261 places, 399 transitions, 5834 flow [2024-06-27 18:57:56,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5677, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5834, PETRI_PLACES=261, PETRI_TRANSITIONS=399} [2024-06-27 18:57:56,856 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 207 predicate places. [2024-06-27 18:57:56,856 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 399 transitions, 5834 flow [2024-06-27 18:57:56,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:56,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:56,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:56,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:57:56,857 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:56,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:56,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1994806577, now seen corresponding path program 3 times [2024-06-27 18:57:56,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:56,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906415755] [2024-06-27 18:57:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:56,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:59,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:59,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906415755] [2024-06-27 18:57:59,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906415755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:59,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:59,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:57:59,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637888204] [2024-06-27 18:57:59,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:59,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:57:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:59,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:57:59,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:57:59,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:59,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 399 transitions, 5834 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:59,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:59,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:59,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:02,150 INFO L124 PetriNetUnfolderBase]: 5976/9477 cut-off events. [2024-06-27 18:58:02,150 INFO L125 PetriNetUnfolderBase]: For 408632/408634 co-relation queries the response was YES. [2024-06-27 18:58:02,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74900 conditions, 9477 events. 5976/9477 cut-off events. For 408632/408634 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 59016 event pairs, 1494 based on Foata normal form. 2/9265 useless extension candidates. Maximal degree in co-relation 74770. Up to 8397 conditions per place. [2024-06-27 18:58:02,278 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 358 selfloop transitions, 60 changer transitions 0/451 dead transitions. [2024-06-27 18:58:02,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 451 transitions, 7234 flow [2024-06-27 18:58:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:58:02,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:58:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-27 18:58:02,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 18:58:02,282 INFO L175 Difference]: Start difference. First operand has 261 places, 399 transitions, 5834 flow. Second operand 10 states and 204 transitions. [2024-06-27 18:58:02,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 451 transitions, 7234 flow [2024-06-27 18:58:03,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 451 transitions, 7138 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:58:03,167 INFO L231 Difference]: Finished difference. Result has 269 places, 419 transitions, 6397 flow [2024-06-27 18:58:03,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5738, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6397, PETRI_PLACES=269, PETRI_TRANSITIONS=419} [2024-06-27 18:58:03,167 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 215 predicate places. [2024-06-27 18:58:03,167 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 419 transitions, 6397 flow [2024-06-27 18:58:03,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:03,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:03,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:03,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:58:03,168 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:03,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:03,169 INFO L85 PathProgramCache]: Analyzing trace with hash 532903838, now seen corresponding path program 3 times [2024-06-27 18:58:03,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:03,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438644917] [2024-06-27 18:58:03,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:03,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:05,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:05,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438644917] [2024-06-27 18:58:05,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438644917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:05,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:05,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:05,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983312389] [2024-06-27 18:58:05,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:05,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:05,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:05,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:05,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 419 transitions, 6397 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:05,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:05,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:05,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:08,205 INFO L124 PetriNetUnfolderBase]: 6450/10032 cut-off events. [2024-06-27 18:58:08,205 INFO L125 PetriNetUnfolderBase]: For 439470/439470 co-relation queries the response was YES. [2024-06-27 18:58:08,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80159 conditions, 10032 events. 6450/10032 cut-off events. For 439470/439470 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 61450 event pairs, 1512 based on Foata normal form. 2/9823 useless extension candidates. Maximal degree in co-relation 80025. Up to 9024 conditions per place. [2024-06-27 18:58:08,538 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 427 selfloop transitions, 60 changer transitions 0/494 dead transitions. [2024-06-27 18:58:08,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 494 transitions, 8318 flow [2024-06-27 18:58:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:58:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:58:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 18:58:08,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699074074074074 [2024-06-27 18:58:08,539 INFO L175 Difference]: Start difference. First operand has 269 places, 419 transitions, 6397 flow. Second operand 9 states and 203 transitions. [2024-06-27 18:58:08,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 494 transitions, 8318 flow [2024-06-27 18:58:09,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 494 transitions, 7818 flow, removed 226 selfloop flow, removed 4 redundant places. [2024-06-27 18:58:09,434 INFO L231 Difference]: Finished difference. Result has 276 places, 440 transitions, 6567 flow [2024-06-27 18:58:09,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6035, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6567, PETRI_PLACES=276, PETRI_TRANSITIONS=440} [2024-06-27 18:58:09,435 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 222 predicate places. [2024-06-27 18:58:09,435 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 440 transitions, 6567 flow [2024-06-27 18:58:09,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:09,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:09,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:09,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:58:09,436 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:09,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash 861185265, now seen corresponding path program 4 times [2024-06-27 18:58:09,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:09,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007239772] [2024-06-27 18:58:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:09,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:11,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:11,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007239772] [2024-06-27 18:58:11,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007239772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:11,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:11,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:11,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837899150] [2024-06-27 18:58:11,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:11,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:11,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:11,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:11,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:58:11,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 440 transitions, 6567 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:11,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:11,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:58:11,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:14,522 INFO L124 PetriNetUnfolderBase]: 6200/9773 cut-off events. [2024-06-27 18:58:14,522 INFO L125 PetriNetUnfolderBase]: For 452082/452216 co-relation queries the response was YES. [2024-06-27 18:58:14,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80003 conditions, 9773 events. 6200/9773 cut-off events. For 452082/452216 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 60925 event pairs, 1519 based on Foata normal form. 61/9607 useless extension candidates. Maximal degree in co-relation 79865. Up to 8605 conditions per place. [2024-06-27 18:58:14,663 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 387 selfloop transitions, 70 changer transitions 0/493 dead transitions. [2024-06-27 18:58:14,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 493 transitions, 8217 flow [2024-06-27 18:58:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:58:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:58:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-27 18:58:14,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 18:58:14,665 INFO L175 Difference]: Start difference. First operand has 276 places, 440 transitions, 6567 flow. Second operand 10 states and 204 transitions. [2024-06-27 18:58:14,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 493 transitions, 8217 flow [2024-06-27 18:58:15,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 493 transitions, 8021 flow, removed 87 selfloop flow, removed 3 redundant places. [2024-06-27 18:58:15,756 INFO L231 Difference]: Finished difference. Result has 286 places, 464 transitions, 7226 flow [2024-06-27 18:58:15,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6381, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7226, PETRI_PLACES=286, PETRI_TRANSITIONS=464} [2024-06-27 18:58:15,757 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 232 predicate places. [2024-06-27 18:58:15,757 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 464 transitions, 7226 flow [2024-06-27 18:58:15,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:15,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:15,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:15,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:58:15,758 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:15,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:15,758 INFO L85 PathProgramCache]: Analyzing trace with hash 5884346, now seen corresponding path program 4 times [2024-06-27 18:58:15,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:15,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529914528] [2024-06-27 18:58:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:15,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:17,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:17,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529914528] [2024-06-27 18:58:17,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529914528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:17,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:17,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:17,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563171881] [2024-06-27 18:58:17,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:17,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:17,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:17,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:17,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:17,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:17,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 464 transitions, 7226 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:17,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:17,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:17,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:21,005 INFO L124 PetriNetUnfolderBase]: 6514/10143 cut-off events. [2024-06-27 18:58:21,005 INFO L125 PetriNetUnfolderBase]: For 465867/465883 co-relation queries the response was YES. [2024-06-27 18:58:21,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82981 conditions, 10143 events. 6514/10143 cut-off events. For 465867/465883 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 62362 event pairs, 1524 based on Foata normal form. 18/9942 useless extension candidates. Maximal degree in co-relation 82838. Up to 9274 conditions per place. [2024-06-27 18:58:21,154 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 454 selfloop transitions, 39 changer transitions 0/500 dead transitions. [2024-06-27 18:58:21,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 500 transitions, 8455 flow [2024-06-27 18:58:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:58:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:58:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-27 18:58:21,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401041666666667 [2024-06-27 18:58:21,155 INFO L175 Difference]: Start difference. First operand has 286 places, 464 transitions, 7226 flow. Second operand 8 states and 169 transitions. [2024-06-27 18:58:21,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 500 transitions, 8455 flow [2024-06-27 18:58:22,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 500 transitions, 8011 flow, removed 198 selfloop flow, removed 4 redundant places. [2024-06-27 18:58:22,203 INFO L231 Difference]: Finished difference. Result has 290 places, 469 transitions, 6957 flow [2024-06-27 18:58:22,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6782, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6957, PETRI_PLACES=290, PETRI_TRANSITIONS=469} [2024-06-27 18:58:22,204 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 236 predicate places. [2024-06-27 18:58:22,204 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 469 transitions, 6957 flow [2024-06-27 18:58:22,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:22,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:22,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:22,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:58:22,205 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:22,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:22,206 INFO L85 PathProgramCache]: Analyzing trace with hash 14158556, now seen corresponding path program 5 times [2024-06-27 18:58:22,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:22,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443899735] [2024-06-27 18:58:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:22,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:24,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443899735] [2024-06-27 18:58:24,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443899735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:24,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:24,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:24,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856178827] [2024-06-27 18:58:24,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:24,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:24,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:24,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:24,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:24,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:24,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 469 transitions, 6957 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:24,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:24,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:24,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:27,600 INFO L124 PetriNetUnfolderBase]: 6560/10211 cut-off events. [2024-06-27 18:58:27,600 INFO L125 PetriNetUnfolderBase]: For 472089/472105 co-relation queries the response was YES. [2024-06-27 18:58:27,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83489 conditions, 10211 events. 6560/10211 cut-off events. For 472089/472105 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 62771 event pairs, 1520 based on Foata normal form. 18/10008 useless extension candidates. Maximal degree in co-relation 83344. Up to 9336 conditions per place. [2024-06-27 18:58:27,732 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 456 selfloop transitions, 40 changer transitions 0/503 dead transitions. [2024-06-27 18:58:27,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 503 transitions, 8176 flow [2024-06-27 18:58:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:58:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:58:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-27 18:58:27,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 18:58:27,733 INFO L175 Difference]: Start difference. First operand has 290 places, 469 transitions, 6957 flow. Second operand 8 states and 168 transitions. [2024-06-27 18:58:27,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 503 transitions, 8176 flow [2024-06-27 18:58:28,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 503 transitions, 8042 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-06-27 18:58:28,775 INFO L231 Difference]: Finished difference. Result has 296 places, 472 transitions, 6984 flow [2024-06-27 18:58:28,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6823, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6984, PETRI_PLACES=296, PETRI_TRANSITIONS=472} [2024-06-27 18:58:28,776 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 242 predicate places. [2024-06-27 18:58:28,776 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 472 transitions, 6984 flow [2024-06-27 18:58:28,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:28,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:28,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:28,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:58:28,777 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:28,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash 116482922, now seen corresponding path program 6 times [2024-06-27 18:58:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:28,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445089369] [2024-06-27 18:58:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:30,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:30,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445089369] [2024-06-27 18:58:30,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445089369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:30,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:30,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:30,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867489860] [2024-06-27 18:58:30,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:30,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:30,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:30,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:30,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 472 transitions, 6984 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:30,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:30,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:30,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:33,929 INFO L124 PetriNetUnfolderBase]: 6554/10203 cut-off events. [2024-06-27 18:58:33,929 INFO L125 PetriNetUnfolderBase]: For 475660/475676 co-relation queries the response was YES. [2024-06-27 18:58:34,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83300 conditions, 10203 events. 6554/10203 cut-off events. For 475660/475676 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 62829 event pairs, 1524 based on Foata normal form. 18/10000 useless extension candidates. Maximal degree in co-relation 83153. Up to 9259 conditions per place. [2024-06-27 18:58:34,082 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 455 selfloop transitions, 50 changer transitions 0/512 dead transitions. [2024-06-27 18:58:34,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 512 transitions, 8314 flow [2024-06-27 18:58:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:58:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:58:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-27 18:58:34,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 18:58:34,083 INFO L175 Difference]: Start difference. First operand has 296 places, 472 transitions, 6984 flow. Second operand 9 states and 184 transitions. [2024-06-27 18:58:34,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 512 transitions, 8314 flow [2024-06-27 18:58:35,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 512 transitions, 8232 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-27 18:58:35,250 INFO L231 Difference]: Finished difference. Result has 304 places, 476 transitions, 7086 flow [2024-06-27 18:58:35,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6906, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7086, PETRI_PLACES=304, PETRI_TRANSITIONS=476} [2024-06-27 18:58:35,251 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 250 predicate places. [2024-06-27 18:58:35,251 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 476 transitions, 7086 flow [2024-06-27 18:58:35,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:35,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:35,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:35,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:58:35,252 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:35,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash -636700710, now seen corresponding path program 1 times [2024-06-27 18:58:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:35,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185633360] [2024-06-27 18:58:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:35,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:37,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:37,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185633360] [2024-06-27 18:58:37,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185633360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:37,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:37,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:37,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304063423] [2024-06-27 18:58:37,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:37,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:37,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:37,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:37,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:37,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:37,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 476 transitions, 7086 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:37,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:37,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:37,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:40,469 INFO L124 PetriNetUnfolderBase]: 6592/10239 cut-off events. [2024-06-27 18:58:40,469 INFO L125 PetriNetUnfolderBase]: For 482466/482472 co-relation queries the response was YES. [2024-06-27 18:58:40,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83830 conditions, 10239 events. 6592/10239 cut-off events. For 482466/482472 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 62567 event pairs, 1198 based on Foata normal form. 3/10024 useless extension candidates. Maximal degree in co-relation 83680. Up to 9226 conditions per place. [2024-06-27 18:58:40,623 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 472 selfloop transitions, 38 changer transitions 0/517 dead transitions. [2024-06-27 18:58:40,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 517 transitions, 8668 flow [2024-06-27 18:58:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:58:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:58:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 18:58:40,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 18:58:40,624 INFO L175 Difference]: Start difference. First operand has 304 places, 476 transitions, 7086 flow. Second operand 6 states and 141 transitions. [2024-06-27 18:58:40,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 517 transitions, 8668 flow [2024-06-27 18:58:41,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 517 transitions, 8576 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:58:41,826 INFO L231 Difference]: Finished difference. Result has 305 places, 481 transitions, 7216 flow [2024-06-27 18:58:41,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6994, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7216, PETRI_PLACES=305, PETRI_TRANSITIONS=481} [2024-06-27 18:58:41,827 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 251 predicate places. [2024-06-27 18:58:41,827 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 481 transitions, 7216 flow [2024-06-27 18:58:41,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:41,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:41,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:41,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:58:41,828 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:41,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:41,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1597125342, now seen corresponding path program 2 times [2024-06-27 18:58:41,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:41,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567912951] [2024-06-27 18:58:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:41,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:44,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567912951] [2024-06-27 18:58:44,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567912951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:44,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:44,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:44,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146844630] [2024-06-27 18:58:44,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:44,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:44,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:44,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:44,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:44,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:44,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 481 transitions, 7216 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:44,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:44,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:44,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:47,629 INFO L124 PetriNetUnfolderBase]: 6753/10505 cut-off events. [2024-06-27 18:58:47,629 INFO L125 PetriNetUnfolderBase]: For 497222/497232 co-relation queries the response was YES. [2024-06-27 18:58:47,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86420 conditions, 10505 events. 6753/10505 cut-off events. For 497222/497232 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 64786 event pairs, 1541 based on Foata normal form. 10/10285 useless extension candidates. Maximal degree in co-relation 86269. Up to 9495 conditions per place. [2024-06-27 18:58:47,765 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 493 selfloop transitions, 67 changer transitions 0/567 dead transitions. [2024-06-27 18:58:47,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 567 transitions, 9401 flow [2024-06-27 18:58:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:58:47,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:58:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-27 18:58:47,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:58:47,767 INFO L175 Difference]: Start difference. First operand has 305 places, 481 transitions, 7216 flow. Second operand 9 states and 198 transitions. [2024-06-27 18:58:47,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 567 transitions, 9401 flow [2024-06-27 18:58:48,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 567 transitions, 9313 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-27 18:58:48,975 INFO L231 Difference]: Finished difference. Result has 315 places, 511 transitions, 7765 flow [2024-06-27 18:58:48,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7156, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7765, PETRI_PLACES=315, PETRI_TRANSITIONS=511} [2024-06-27 18:58:48,976 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 261 predicate places. [2024-06-27 18:58:48,976 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 511 transitions, 7765 flow [2024-06-27 18:58:48,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:48,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:48,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:48,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:58:48,977 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:48,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:48,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1657906312, now seen corresponding path program 3 times [2024-06-27 18:58:48,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:48,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097929902] [2024-06-27 18:58:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:48,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:51,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:51,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097929902] [2024-06-27 18:58:51,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097929902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:51,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:51,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:51,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871639971] [2024-06-27 18:58:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:51,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:51,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:51,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:51,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:51,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:51,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 511 transitions, 7765 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:51,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:51,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:51,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:54,288 INFO L124 PetriNetUnfolderBase]: 6748/10487 cut-off events. [2024-06-27 18:58:54,288 INFO L125 PetriNetUnfolderBase]: For 500963/500972 co-relation queries the response was YES. [2024-06-27 18:58:54,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87017 conditions, 10487 events. 6748/10487 cut-off events. For 500963/500972 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 64483 event pairs, 1533 based on Foata normal form. 4/10263 useless extension candidates. Maximal degree in co-relation 86861. Up to 9444 conditions per place. [2024-06-27 18:58:54,421 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 466 selfloop transitions, 67 changer transitions 0/540 dead transitions. [2024-06-27 18:58:54,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 540 transitions, 9088 flow [2024-06-27 18:58:54,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:58:54,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:58:54,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 18:58:54,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:58:54,423 INFO L175 Difference]: Start difference. First operand has 315 places, 511 transitions, 7765 flow. Second operand 6 states and 136 transitions. [2024-06-27 18:58:54,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 540 transitions, 9088 flow [2024-06-27 18:58:55,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 540 transitions, 8977 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-27 18:58:55,632 INFO L231 Difference]: Finished difference. Result has 319 places, 512 transitions, 7817 flow [2024-06-27 18:58:55,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7660, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7817, PETRI_PLACES=319, PETRI_TRANSITIONS=512} [2024-06-27 18:58:55,633 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 265 predicate places. [2024-06-27 18:58:55,633 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 512 transitions, 7817 flow [2024-06-27 18:58:55,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:55,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:55,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:55,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:58:55,633 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:55,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:55,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1648893560, now seen corresponding path program 1 times [2024-06-27 18:58:55,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:55,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363125855] [2024-06-27 18:58:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:55,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:57,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:57,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363125855] [2024-06-27 18:58:57,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363125855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:57,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:57,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:58:57,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256200065] [2024-06-27 18:58:57,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:57,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:58:57,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:58:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:58:57,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:57,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 512 transitions, 7817 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:57,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:57,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:57,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:01,066 INFO L124 PetriNetUnfolderBase]: 6828/10619 cut-off events. [2024-06-27 18:59:01,067 INFO L125 PetriNetUnfolderBase]: For 515283/515296 co-relation queries the response was YES. [2024-06-27 18:59:01,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88311 conditions, 10619 events. 6828/10619 cut-off events. For 515283/515296 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 65644 event pairs, 1545 based on Foata normal form. 11/10396 useless extension candidates. Maximal degree in co-relation 88153. Up to 9549 conditions per place. [2024-06-27 18:59:01,237 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 497 selfloop transitions, 73 changer transitions 0/577 dead transitions. [2024-06-27 18:59:01,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 577 transitions, 9914 flow [2024-06-27 18:59:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:59:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:59:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 18:59:01,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2024-06-27 18:59:01,247 INFO L175 Difference]: Start difference. First operand has 319 places, 512 transitions, 7817 flow. Second operand 8 states and 181 transitions. [2024-06-27 18:59:01,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 577 transitions, 9914 flow [2024-06-27 18:59:02,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 577 transitions, 9776 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:59:02,611 INFO L231 Difference]: Finished difference. Result has 324 places, 525 transitions, 8169 flow [2024-06-27 18:59:02,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7687, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8169, PETRI_PLACES=324, PETRI_TRANSITIONS=525} [2024-06-27 18:59:02,611 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 270 predicate places. [2024-06-27 18:59:02,612 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 525 transitions, 8169 flow [2024-06-27 18:59:02,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:02,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:02,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:02,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:59:02,612 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:02,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:02,613 INFO L85 PathProgramCache]: Analyzing trace with hash -203056074, now seen corresponding path program 2 times [2024-06-27 18:59:02,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:02,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541339653] [2024-06-27 18:59:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:02,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541339653] [2024-06-27 18:59:05,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541339653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:05,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:05,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:59:05,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599421516] [2024-06-27 18:59:05,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:05,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:59:05,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:59:05,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:59:05,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:05,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 525 transitions, 8169 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:05,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:05,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:05,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:09,030 INFO L124 PetriNetUnfolderBase]: 6879/10695 cut-off events. [2024-06-27 18:59:09,031 INFO L125 PetriNetUnfolderBase]: For 528764/528773 co-relation queries the response was YES. [2024-06-27 18:59:09,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90072 conditions, 10695 events. 6879/10695 cut-off events. For 528764/528773 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 66143 event pairs, 1527 based on Foata normal form. 4/10461 useless extension candidates. Maximal degree in co-relation 89912. Up to 9409 conditions per place. [2024-06-27 18:59:09,193 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 432 selfloop transitions, 141 changer transitions 0/580 dead transitions. [2024-06-27 18:59:09,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 580 transitions, 10101 flow [2024-06-27 18:59:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:59:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:59:09,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:59:09,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-27 18:59:09,195 INFO L175 Difference]: Start difference. First operand has 324 places, 525 transitions, 8169 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:59:09,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 580 transitions, 10101 flow [2024-06-27 18:59:10,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 580 transitions, 9949 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 18:59:10,896 INFO L231 Difference]: Finished difference. Result has 329 places, 536 transitions, 8699 flow [2024-06-27 18:59:10,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8033, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8699, PETRI_PLACES=329, PETRI_TRANSITIONS=536} [2024-06-27 18:59:10,896 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 275 predicate places. [2024-06-27 18:59:10,897 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 536 transitions, 8699 flow [2024-06-27 18:59:10,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:10,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:10,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:10,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:59:10,897 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:10,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1010390694, now seen corresponding path program 3 times [2024-06-27 18:59:10,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:10,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901725561] [2024-06-27 18:59:10,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:10,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901725561] [2024-06-27 18:59:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901725561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:13,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:13,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:59:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107301257] [2024-06-27 18:59:13,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:13,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:59:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:13,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:59:13,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:59:13,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:13,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 536 transitions, 8699 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:13,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:13,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:13,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:16,734 INFO L124 PetriNetUnfolderBase]: 6902/10707 cut-off events. [2024-06-27 18:59:16,734 INFO L125 PetriNetUnfolderBase]: For 547546/547555 co-relation queries the response was YES. [2024-06-27 18:59:16,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91882 conditions, 10707 events. 6902/10707 cut-off events. For 547546/547555 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 65953 event pairs, 1542 based on Foata normal form. 3/10480 useless extension candidates. Maximal degree in co-relation 91719. Up to 9353 conditions per place. [2024-06-27 18:59:16,873 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 449 selfloop transitions, 132 changer transitions 0/588 dead transitions. [2024-06-27 18:59:16,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 588 transitions, 10761 flow [2024-06-27 18:59:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:59:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:59:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:59:16,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-27 18:59:16,878 INFO L175 Difference]: Start difference. First operand has 329 places, 536 transitions, 8699 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:59:16,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 588 transitions, 10761 flow [2024-06-27 18:59:18,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 588 transitions, 10484 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-27 18:59:18,461 INFO L231 Difference]: Finished difference. Result has 333 places, 543 transitions, 8950 flow [2024-06-27 18:59:18,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8438, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8950, PETRI_PLACES=333, PETRI_TRANSITIONS=543} [2024-06-27 18:59:18,467 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 279 predicate places. [2024-06-27 18:59:18,467 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 543 transitions, 8950 flow [2024-06-27 18:59:18,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:18,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:18,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:59:18,468 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:18,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash -398864784, now seen corresponding path program 4 times [2024-06-27 18:59:18,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337718170] [2024-06-27 18:59:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:20,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:20,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337718170] [2024-06-27 18:59:20,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337718170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:20,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:20,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:59:20,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565460448] [2024-06-27 18:59:20,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:20,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:59:20,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:20,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:59:20,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:59:20,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:20,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 543 transitions, 8950 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:20,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:20,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:20,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:24,403 INFO L124 PetriNetUnfolderBase]: 6925/10752 cut-off events. [2024-06-27 18:59:24,403 INFO L125 PetriNetUnfolderBase]: For 549016/549025 co-relation queries the response was YES. [2024-06-27 18:59:24,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92685 conditions, 10752 events. 6925/10752 cut-off events. For 549016/549025 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 66446 event pairs, 1542 based on Foata normal form. 3/10522 useless extension candidates. Maximal degree in co-relation 92520. Up to 9377 conditions per place. [2024-06-27 18:59:24,574 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 439 selfloop transitions, 141 changer transitions 0/587 dead transitions. [2024-06-27 18:59:24,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 587 transitions, 10857 flow [2024-06-27 18:59:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:59:24,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:59:24,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:59:24,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 18:59:24,576 INFO L175 Difference]: Start difference. First operand has 333 places, 543 transitions, 8950 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:59:24,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 587 transitions, 10857 flow [2024-06-27 18:59:26,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 587 transitions, 10525 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 18:59:26,510 INFO L231 Difference]: Finished difference. Result has 336 places, 546 transitions, 8987 flow [2024-06-27 18:59:26,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8642, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8987, PETRI_PLACES=336, PETRI_TRANSITIONS=546} [2024-06-27 18:59:26,511 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 282 predicate places. [2024-06-27 18:59:26,511 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 546 transitions, 8987 flow [2024-06-27 18:59:26,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:26,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:26,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:26,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:59:26,512 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:26,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2134819963, now seen corresponding path program 1 times [2024-06-27 18:59:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:26,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741255313] [2024-06-27 18:59:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:28,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:28,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741255313] [2024-06-27 18:59:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741255313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:28,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:28,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:59:28,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578178114] [2024-06-27 18:59:28,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:28,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:59:28,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:28,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:59:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:59:28,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:28,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 546 transitions, 8987 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:28,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:28,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:28,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:32,728 INFO L124 PetriNetUnfolderBase]: 7323/11375 cut-off events. [2024-06-27 18:59:32,729 INFO L125 PetriNetUnfolderBase]: For 579587/579603 co-relation queries the response was YES. [2024-06-27 18:59:32,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97954 conditions, 11375 events. 7323/11375 cut-off events. For 579587/579603 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 71086 event pairs, 1604 based on Foata normal form. 18/11136 useless extension candidates. Maximal degree in co-relation 97788. Up to 9993 conditions per place. [2024-06-27 18:59:32,903 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 558 selfloop transitions, 143 changer transitions 0/708 dead transitions. [2024-06-27 18:59:32,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 708 transitions, 13127 flow [2024-06-27 18:59:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:59:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:59:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 246 transitions. [2024-06-27 18:59:32,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-27 18:59:32,905 INFO L175 Difference]: Start difference. First operand has 336 places, 546 transitions, 8987 flow. Second operand 11 states and 246 transitions. [2024-06-27 18:59:32,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 708 transitions, 13127 flow [2024-06-27 18:59:34,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 708 transitions, 12863 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:59:34,582 INFO L231 Difference]: Finished difference. Result has 346 places, 621 transitions, 10678 flow [2024-06-27 18:59:34,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8787, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10678, PETRI_PLACES=346, PETRI_TRANSITIONS=621} [2024-06-27 18:59:34,583 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 292 predicate places. [2024-06-27 18:59:34,583 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 621 transitions, 10678 flow [2024-06-27 18:59:34,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:34,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:34,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:34,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:59:34,588 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:34,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:34,588 INFO L85 PathProgramCache]: Analyzing trace with hash -311567471, now seen corresponding path program 2 times [2024-06-27 18:59:34,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:34,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779487471] [2024-06-27 18:59:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:34,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:36,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:36,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779487471] [2024-06-27 18:59:36,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779487471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:36,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:36,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:59:36,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840383866] [2024-06-27 18:59:36,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:36,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:59:36,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:36,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:59:36,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:59:36,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:36,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 621 transitions, 10678 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:36,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:36,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:36,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:41,396 INFO L124 PetriNetUnfolderBase]: 7565/11709 cut-off events. [2024-06-27 18:59:41,397 INFO L125 PetriNetUnfolderBase]: For 621267/621344 co-relation queries the response was YES. [2024-06-27 18:59:41,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102558 conditions, 11709 events. 7565/11709 cut-off events. For 621267/621344 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 72960 event pairs, 1592 based on Foata normal form. 59/11507 useless extension candidates. Maximal degree in co-relation 102388. Up to 10007 conditions per place. [2024-06-27 18:59:41,564 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 497 selfloop transitions, 184 changer transitions 0/688 dead transitions. [2024-06-27 18:59:41,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 688 transitions, 13107 flow [2024-06-27 18:59:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:59:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:59:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-27 18:59:41,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47685185185185186 [2024-06-27 18:59:41,566 INFO L175 Difference]: Start difference. First operand has 346 places, 621 transitions, 10678 flow. Second operand 9 states and 206 transitions. [2024-06-27 18:59:41,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 688 transitions, 13107 flow [2024-06-27 18:59:43,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 688 transitions, 12934 flow, removed 81 selfloop flow, removed 3 redundant places. [2024-06-27 18:59:43,364 INFO L231 Difference]: Finished difference. Result has 353 places, 638 transitions, 11268 flow [2024-06-27 18:59:43,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10537, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11268, PETRI_PLACES=353, PETRI_TRANSITIONS=638} [2024-06-27 18:59:43,365 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 299 predicate places. [2024-06-27 18:59:43,365 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 638 transitions, 11268 flow [2024-06-27 18:59:43,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:43,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:43,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:43,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:59:43,365 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:43,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:43,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1342296676, now seen corresponding path program 5 times [2024-06-27 18:59:43,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:43,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143619031] [2024-06-27 18:59:43,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:43,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:45,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:45,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143619031] [2024-06-27 18:59:45,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143619031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:45,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:45,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:59:45,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977230709] [2024-06-27 18:59:45,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:45,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:59:45,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:45,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:59:45,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:59:45,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:45,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 638 transitions, 11268 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:45,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:45,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:45,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:49,598 INFO L124 PetriNetUnfolderBase]: 7562/11707 cut-off events. [2024-06-27 18:59:49,599 INFO L125 PetriNetUnfolderBase]: For 625144/625213 co-relation queries the response was YES. [2024-06-27 18:59:49,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103914 conditions, 11707 events. 7562/11707 cut-off events. For 625144/625213 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 72952 event pairs, 1634 based on Foata normal form. 40/11482 useless extension candidates. Maximal degree in co-relation 103742. Up to 10060 conditions per place. [2024-06-27 18:59:49,818 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 484 selfloop transitions, 184 changer transitions 0/675 dead transitions. [2024-06-27 18:59:49,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 675 transitions, 13108 flow [2024-06-27 18:59:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:59:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:59:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 18:59:49,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:59:49,819 INFO L175 Difference]: Start difference. First operand has 353 places, 638 transitions, 11268 flow. Second operand 7 states and 161 transitions. [2024-06-27 18:59:49,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 675 transitions, 13108 flow [2024-06-27 18:59:52,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 675 transitions, 12941 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 18:59:52,524 INFO L231 Difference]: Finished difference. Result has 357 places, 640 transitions, 11527 flow [2024-06-27 18:59:52,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11107, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11527, PETRI_PLACES=357, PETRI_TRANSITIONS=640} [2024-06-27 18:59:52,525 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 303 predicate places. [2024-06-27 18:59:52,525 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 640 transitions, 11527 flow [2024-06-27 18:59:52,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:52,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:52,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:52,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:59:52,526 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:52,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1345597239, now seen corresponding path program 3 times [2024-06-27 18:59:52,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:52,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45605997] [2024-06-27 18:59:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:52,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:54,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:54,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45605997] [2024-06-27 18:59:54,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45605997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:54,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:54,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:59:54,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006915744] [2024-06-27 18:59:54,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:54,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:59:54,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:54,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:59:54,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:59:54,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:54,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 640 transitions, 11527 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:54,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:54,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:54,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:59,879 INFO L124 PetriNetUnfolderBase]: 8312/12834 cut-off events. [2024-06-27 18:59:59,879 INFO L125 PetriNetUnfolderBase]: For 665032/665048 co-relation queries the response was YES. [2024-06-27 19:00:00,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114769 conditions, 12834 events. 8312/12834 cut-off events. For 665032/665048 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 80907 event pairs, 1587 based on Foata normal form. 22/12559 useless extension candidates. Maximal degree in co-relation 114595. Up to 10435 conditions per place. [2024-06-27 19:00:00,099 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 573 selfloop transitions, 278 changer transitions 0/858 dead transitions. [2024-06-27 19:00:00,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 858 transitions, 17590 flow [2024-06-27 19:00:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:00:00,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:00:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 19:00:00,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-27 19:00:00,101 INFO L175 Difference]: Start difference. First operand has 357 places, 640 transitions, 11527 flow. Second operand 8 states and 198 transitions. [2024-06-27 19:00:00,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 858 transitions, 17590 flow [2024-06-27 19:00:02,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 858 transitions, 17135 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 19:00:02,412 INFO L231 Difference]: Finished difference. Result has 365 places, 764 transitions, 14828 flow [2024-06-27 19:00:02,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11204, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14828, PETRI_PLACES=365, PETRI_TRANSITIONS=764} [2024-06-27 19:00:02,412 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 311 predicate places. [2024-06-27 19:00:02,413 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 764 transitions, 14828 flow [2024-06-27 19:00:02,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:02,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:02,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:02,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:00:02,413 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:02,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2134073785, now seen corresponding path program 4 times [2024-06-27 19:00:02,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:02,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125078955] [2024-06-27 19:00:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:02,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:04,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:04,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125078955] [2024-06-27 19:00:04,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125078955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:04,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:04,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:04,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820373971] [2024-06-27 19:00:04,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:04,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:04,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:04,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:04,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:05,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 19:00:05,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 764 transitions, 14828 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:05,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:05,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 19:00:05,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:10,475 INFO L124 PetriNetUnfolderBase]: 8306/12815 cut-off events. [2024-06-27 19:00:10,475 INFO L125 PetriNetUnfolderBase]: For 678093/678164 co-relation queries the response was YES. [2024-06-27 19:00:10,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118215 conditions, 12815 events. 8306/12815 cut-off events. For 678093/678164 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 80514 event pairs, 1615 based on Foata normal form. 55/12577 useless extension candidates. Maximal degree in co-relation 118035. Up to 10579 conditions per place. [2024-06-27 19:00:10,873 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 506 selfloop transitions, 289 changer transitions 0/802 dead transitions. [2024-06-27 19:00:10,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 802 transitions, 16904 flow [2024-06-27 19:00:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:00:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:00:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 19:00:10,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-27 19:00:10,875 INFO L175 Difference]: Start difference. First operand has 365 places, 764 transitions, 14828 flow. Second operand 7 states and 162 transitions. [2024-06-27 19:00:10,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 802 transitions, 16904 flow [2024-06-27 19:00:13,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 802 transitions, 16804 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 19:00:13,088 INFO L231 Difference]: Finished difference. Result has 369 places, 764 transitions, 15338 flow [2024-06-27 19:00:13,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=14736, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15338, PETRI_PLACES=369, PETRI_TRANSITIONS=764} [2024-06-27 19:00:13,089 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 315 predicate places. [2024-06-27 19:00:13,089 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 764 transitions, 15338 flow [2024-06-27 19:00:13,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:13,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:13,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:13,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:00:13,090 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:13,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:13,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1345776787, now seen corresponding path program 1 times [2024-06-27 19:00:13,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:13,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580071481] [2024-06-27 19:00:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:13,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580071481] [2024-06-27 19:00:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580071481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:16,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:16,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:00:16,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18898976] [2024-06-27 19:00:16,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:16,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:00:16,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:16,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:00:16,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:00:16,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 19:00:16,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 764 transitions, 15338 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:16,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:16,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 19:00:16,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:00:22,121 INFO L124 PetriNetUnfolderBase]: 8602/13371 cut-off events. [2024-06-27 19:00:22,121 INFO L125 PetriNetUnfolderBase]: For 708475/708528 co-relation queries the response was YES. [2024-06-27 19:00:22,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122648 conditions, 13371 events. 8602/13371 cut-off events. For 708475/708528 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 85949 event pairs, 1645 based on Foata normal form. 62/13096 useless extension candidates. Maximal degree in co-relation 122467. Up to 10758 conditions per place. [2024-06-27 19:00:22,359 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 634 selfloop transitions, 130 changer transitions 0/893 dead transitions. [2024-06-27 19:00:22,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 893 transitions, 18772 flow [2024-06-27 19:00:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:00:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:00:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-06-27 19:00:22,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47291666666666665 [2024-06-27 19:00:22,361 INFO L175 Difference]: Start difference. First operand has 369 places, 764 transitions, 15338 flow. Second operand 10 states and 227 transitions. [2024-06-27 19:00:22,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 893 transitions, 18772 flow [2024-06-27 19:00:24,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 893 transitions, 18176 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 19:00:24,609 INFO L231 Difference]: Finished difference. Result has 374 places, 816 transitions, 16123 flow [2024-06-27 19:00:24,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=14760, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16123, PETRI_PLACES=374, PETRI_TRANSITIONS=816} [2024-06-27 19:00:24,611 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 320 predicate places. [2024-06-27 19:00:24,612 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 816 transitions, 16123 flow [2024-06-27 19:00:24,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:24,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:00:24,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:00:24,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:00:24,612 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:00:24,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:00:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2093522031, now seen corresponding path program 5 times [2024-06-27 19:00:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:00:24,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381390814] [2024-06-27 19:00:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:00:24,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:00:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:00:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:00:26,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:00:26,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381390814] [2024-06-27 19:00:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381390814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:00:26,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:00:26,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:00:26,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387676725] [2024-06-27 19:00:26,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:00:26,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:00:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:00:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:00:26,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:00:26,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 19:00:26,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 816 transitions, 16123 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:00:26,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:00:26,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 19:00:26,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand