./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix003_power.opt_pso.opt_rmo.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix003_power.opt_pso.opt_rmo.opt_tso.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/mix003_power.opt_pso.opt_rmo.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix003_power.opt_pso.opt_rmo.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:03:21,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:03:21,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:03:21,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:03:21,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:03:21,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:03:21,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:03:21,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:03:21,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:03:21,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:03:21,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:03:21,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:03:21,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:03:21,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:03:21,232 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:03:21,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:03:21,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:03:21,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:03:21,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:03:21,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:03:21,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:03:21,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:03:21,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:03:21,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:03:21,235 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:03:21,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:03:21,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:03:21,236 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:03:21,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:03:21,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:03:21,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:03:21,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:03:21,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:03:21,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:03:21,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:03:21,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:03:21,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:03:21,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:03:21,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:03:21,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:03:21,241 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:03:21,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:03:21,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:03:21,242 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:03:21,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:03:21,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:03:21,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:03:21,529 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:03:21,529 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:03:21,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix003_power.opt_pso.opt_rmo.opt_tso.opt.yml/witness.yml [2024-06-27 22:03:21,664 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:03:21,665 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:03:21,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix003_power.opt_pso.opt_rmo.opt_tso.opt.i [2024-06-27 22:03:22,834 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:03:23,096 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:03:23,097 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix003_power.opt_pso.opt_rmo.opt_tso.opt.i [2024-06-27 22:03:23,122 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2daace23e/62c2c3c6f8644d43bee1c8e4d4b26127/FLAGebeae9b81 [2024-06-27 22:03:23,139 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2daace23e/62c2c3c6f8644d43bee1c8e4d4b26127 [2024-06-27 22:03:23,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:03:23,141 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:03:23,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:03:23,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:03:23,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:03:23,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:03:21" (1/2) ... [2024-06-27 22:03:23,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a82041 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:23, skipping insertion in model container [2024-06-27 22:03:23,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:03:21" (1/2) ... [2024-06-27 22:03:23,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3cea3a68 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:03:23, skipping insertion in model container [2024-06-27 22:03:23,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:03:23" (2/2) ... [2024-06-27 22:03:23,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a82041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23, skipping insertion in model container [2024-06-27 22:03:23,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:03:23" (2/2) ... [2024-06-27 22:03:23,163 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:03:23,197 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:03:23,199 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:03:23,199 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:03:23,199 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:03:23,200 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:03:23,200 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-27 22:03:23,253 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:03:23,413 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/mix003_power.opt_pso.opt_rmo.opt_tso.opt.i[974,987] [2024-06-27 22:03:23,604 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:03:23,620 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:03:23,657 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/mix003_power.opt_pso.opt_rmo.opt_tso.opt.i[974,987] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:03:23,772 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:03:23,859 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:03:23,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23 WrapperNode [2024-06-27 22:03:23,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:03:23,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:03:23,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:03:23,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:03:23,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:23,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:23,956 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2024-06-27 22:03:23,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:03:23,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:03:23,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:03:23,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:03:23,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:23,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:23,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:24,023 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:03:24,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:24,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:24,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:24,034 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:24,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:24,039 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:24,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:03:24,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:03:24,045 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:03:24,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:03:24,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (1/1) ... [2024-06-27 22:03:24,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:03:24,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:03:24,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:03:24,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:03:24,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:03:24,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:03:24,128 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:03:24,128 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:03:24,128 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:03:24,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:03:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:03:24,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:03:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:03:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:03:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:03:24,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:03:24,132 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:03:24,296 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:03:24,300 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:03:24,793 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:03:24,793 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:03:24,996 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:03:24,997 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:03:24,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:03:24 BoogieIcfgContainer [2024-06-27 22:03:24,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:03:25,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:03:25,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:03:25,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:03:25,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:03:21" (1/4) ... [2024-06-27 22:03:25,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dd25c4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:03:25, skipping insertion in model container [2024-06-27 22:03:25,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:03:23" (2/4) ... [2024-06-27 22:03:25,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dd25c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:03:25, skipping insertion in model container [2024-06-27 22:03:25,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:03:23" (3/4) ... [2024-06-27 22:03:25,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dd25c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:03:25, skipping insertion in model container [2024-06-27 22:03:25,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:03:24" (4/4) ... [2024-06-27 22:03:25,014 INFO L112 eAbstractionObserver]: Analyzing ICFG mix003_power.opt_pso.opt_rmo.opt_tso.opt.i [2024-06-27 22:03:25,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:03:25,029 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:03:25,029 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:03:25,087 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:03:25,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:03:25,182 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 22:03:25,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:03:25,186 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 5. Compared 77 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 22:03:25,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:03:25,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 22:03:25,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:03:25,216 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;@77ecafa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:03:25,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:03:25,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:03:25,222 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:03:25,222 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:03:25,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:25,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:03:25,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:25,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:25,228 INFO L85 PathProgramCache]: Analyzing trace with hash 385501936, now seen corresponding path program 1 times [2024-06-27 22:03:25,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:25,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133373158] [2024-06-27 22:03:25,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:25,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:26,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:26,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133373158] [2024-06-27 22:03:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133373158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:26,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:26,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:03:26,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87234681] [2024-06-27 22:03:26,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:26,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:03:26,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:27,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:03:27,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:03:27,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-27 22:03:27,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:27,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:27,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-27 22:03:27,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:27,742 INFO L124 PetriNetUnfolderBase]: 2330/3965 cut-off events. [2024-06-27 22:03:27,742 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 22:03:27,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 3965 events. 2330/3965 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 26057 event pairs, 1832 based on Foata normal form. 120/3759 useless extension candidates. Maximal degree in co-relation 7405. Up to 3385 conditions per place. [2024-06-27 22:03:27,774 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 39 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-06-27 22:03:27,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 217 flow [2024-06-27 22:03:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:03:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:03:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-27 22:03:27,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7152777777777778 [2024-06-27 22:03:27,788 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 103 transitions. [2024-06-27 22:03:27,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 217 flow [2024-06-27 22:03:27,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:03:27,794 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 126 flow [2024-06-27 22:03:27,796 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=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:03:27,800 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 22:03:27,800 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 126 flow [2024-06-27 22:03:27,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:27,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:27,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:27,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:03:27,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:27,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1100209103, now seen corresponding path program 1 times [2024-06-27 22:03:27,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:27,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957619467] [2024-06-27 22:03:27,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:27,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:29,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:29,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957619467] [2024-06-27 22:03:29,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957619467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:29,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:29,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:03:29,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513688668] [2024-06-27 22:03:29,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:29,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:03:29,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:29,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:03:29,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:03:29,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:03:29,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 22:03:29,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:29,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:03:29,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:29,725 INFO L124 PetriNetUnfolderBase]: 2641/4286 cut-off events. [2024-06-27 22:03:29,725 INFO L125 PetriNetUnfolderBase]: For 645/645 co-relation queries the response was YES. [2024-06-27 22:03:29,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9162 conditions, 4286 events. 2641/4286 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 26840 event pairs, 1372 based on Foata normal form. 3/4037 useless extension candidates. Maximal degree in co-relation 9150. Up to 3803 conditions per place. [2024-06-27 22:03:29,760 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 51 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-06-27 22:03:29,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 304 flow [2024-06-27 22:03:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:03:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:03:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-27 22:03:29,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-06-27 22:03:29,763 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 126 flow. Second operand 4 states and 130 transitions. [2024-06-27 22:03:29,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 304 flow [2024-06-27 22:03:29,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:03:29,766 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 164 flow [2024-06-27 22:03:29,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 22:03:29,767 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 22:03:29,767 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 164 flow [2024-06-27 22:03:29,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 22:03:29,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:29,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:29,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:03:29,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:29,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1435132404, now seen corresponding path program 1 times [2024-06-27 22:03:29,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796450016] [2024-06-27 22:03:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:31,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:31,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796450016] [2024-06-27 22:03:31,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796450016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:31,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:31,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:03:31,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153693292] [2024-06-27 22:03:31,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:31,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:03:31,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:31,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:03:31,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:03:31,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:03:31,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:31,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:31,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:03:31,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:32,499 INFO L124 PetriNetUnfolderBase]: 3322/5529 cut-off events. [2024-06-27 22:03:32,499 INFO L125 PetriNetUnfolderBase]: For 2177/2177 co-relation queries the response was YES. [2024-06-27 22:03:32,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12583 conditions, 5529 events. 3322/5529 cut-off events. For 2177/2177 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 36196 event pairs, 1650 based on Foata normal form. 6/5194 useless extension candidates. Maximal degree in co-relation 12569. Up to 4689 conditions per place. [2024-06-27 22:03:32,537 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 71 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-06-27 22:03:32,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 96 transitions, 450 flow [2024-06-27 22:03:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:03:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:03:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-27 22:03:32,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-27 22:03:32,544 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 164 flow. Second operand 6 states and 183 transitions. [2024-06-27 22:03:32,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 96 transitions, 450 flow [2024-06-27 22:03:32,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 96 transitions, 430 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 22:03:32,550 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 209 flow [2024-06-27 22:03:32,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-06-27 22:03:32,551 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-27 22:03:32,552 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 209 flow [2024-06-27 22:03:32,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:32,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:32,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:32,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:03:32,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:32,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash 771231406, now seen corresponding path program 1 times [2024-06-27 22:03:32,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:32,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61547454] [2024-06-27 22:03:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:32,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:33,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61547454] [2024-06-27 22:03:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61547454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:33,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:33,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:03:33,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381499621] [2024-06-27 22:03:33,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:33,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:03:33,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:03:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:03:33,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:03:33,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:33,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:33,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:03:33,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:35,011 INFO L124 PetriNetUnfolderBase]: 4045/6055 cut-off events. [2024-06-27 22:03:35,012 INFO L125 PetriNetUnfolderBase]: For 4141/4141 co-relation queries the response was YES. [2024-06-27 22:03:35,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15768 conditions, 6055 events. 4045/6055 cut-off events. For 4141/4141 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 34905 event pairs, 1458 based on Foata normal form. 3/5825 useless extension candidates. Maximal degree in co-relation 15751. Up to 5763 conditions per place. [2024-06-27 22:03:35,052 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 64 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2024-06-27 22:03:35,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 460 flow [2024-06-27 22:03:35,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:03:35,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:03:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-27 22:03:35,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:03:35,054 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 209 flow. Second operand 6 states and 156 transitions. [2024-06-27 22:03:35,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 460 flow [2024-06-27 22:03:35,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 431 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:03:35,064 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 274 flow [2024-06-27 22:03:35,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-27 22:03:35,066 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2024-06-27 22:03:35,066 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 274 flow [2024-06-27 22:03:35,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:35,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:35,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:35,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:03:35,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:35,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:35,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1872353366, now seen corresponding path program 1 times [2024-06-27 22:03:35,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:35,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3195828] [2024-06-27 22:03:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:35,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:36,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:36,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3195828] [2024-06-27 22:03:36,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3195828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:36,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:36,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:03:36,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739905935] [2024-06-27 22:03:36,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:36,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:03:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:03:36,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:03:36,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:03:36,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:36,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:36,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:03:36,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:37,764 INFO L124 PetriNetUnfolderBase]: 4029/6094 cut-off events. [2024-06-27 22:03:37,765 INFO L125 PetriNetUnfolderBase]: For 6900/6900 co-relation queries the response was YES. [2024-06-27 22:03:37,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17106 conditions, 6094 events. 4029/6094 cut-off events. For 6900/6900 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 35330 event pairs, 1354 based on Foata normal form. 6/5898 useless extension candidates. Maximal degree in co-relation 17084. Up to 5663 conditions per place. [2024-06-27 22:03:37,869 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 76 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2024-06-27 22:03:37,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 105 transitions, 580 flow [2024-06-27 22:03:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:03:37,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:03:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 22:03:37,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-27 22:03:37,871 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 274 flow. Second operand 7 states and 186 transitions. [2024-06-27 22:03:37,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 105 transitions, 580 flow [2024-06-27 22:03:37,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 105 transitions, 565 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 22:03:37,902 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 357 flow [2024-06-27 22:03:37,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-06-27 22:03:37,905 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-27 22:03:37,912 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 357 flow [2024-06-27 22:03:37,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:37,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:37,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:37,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:03:37,913 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:37,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:37,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1876125649, now seen corresponding path program 1 times [2024-06-27 22:03:37,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:37,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047244533] [2024-06-27 22:03:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:37,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:39,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:39,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047244533] [2024-06-27 22:03:39,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047244533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:39,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:39,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:03:39,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474602566] [2024-06-27 22:03:39,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:39,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:03:39,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:39,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:03:39,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:03:39,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:39,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 22:03:39,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:39,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:39,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:40,546 INFO L124 PetriNetUnfolderBase]: 4729/6850 cut-off events. [2024-06-27 22:03:40,546 INFO L125 PetriNetUnfolderBase]: For 12998/13007 co-relation queries the response was YES. [2024-06-27 22:03:40,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21277 conditions, 6850 events. 4729/6850 cut-off events. For 12998/13007 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37907 event pairs, 1582 based on Foata normal form. 9/6656 useless extension candidates. Maximal degree in co-relation 21250. Up to 6582 conditions per place. [2024-06-27 22:03:40,597 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 86 selfloop transitions, 31 changer transitions 0/127 dead transitions. [2024-06-27 22:03:40,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 857 flow [2024-06-27 22:03:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:03:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:03:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 22:03:40,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-06-27 22:03:40,599 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 357 flow. Second operand 7 states and 188 transitions. [2024-06-27 22:03:40,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 857 flow [2024-06-27 22:03:40,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 127 transitions, 818 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 22:03:40,613 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 557 flow [2024-06-27 22:03:40,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=557, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2024-06-27 22:03:40,614 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-27 22:03:40,614 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 557 flow [2024-06-27 22:03:40,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 22:03:40,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:40,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:40,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:03:40,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:40,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1864299769, now seen corresponding path program 2 times [2024-06-27 22:03:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693499429] [2024-06-27 22:03:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:40,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:41,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693499429] [2024-06-27 22:03:41,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693499429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:41,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:41,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:03:41,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677350703] [2024-06-27 22:03:41,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:41,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:03:41,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:41,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:03:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:03:41,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:41,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 557 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 22:03:41,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:41,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:41,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:43,009 INFO L124 PetriNetUnfolderBase]: 4723/6836 cut-off events. [2024-06-27 22:03:43,010 INFO L125 PetriNetUnfolderBase]: For 16551/16554 co-relation queries the response was YES. [2024-06-27 22:03:43,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22733 conditions, 6836 events. 4723/6836 cut-off events. For 16551/16554 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 37706 event pairs, 1574 based on Foata normal form. 4/6663 useless extension candidates. Maximal degree in co-relation 22701. Up to 6577 conditions per place. [2024-06-27 22:03:43,060 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 82 selfloop transitions, 32 changer transitions 0/124 dead transitions. [2024-06-27 22:03:43,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 895 flow [2024-06-27 22:03:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:03:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:03:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 22:03:43,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:03:43,062 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 557 flow. Second operand 7 states and 182 transitions. [2024-06-27 22:03:43,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 895 flow [2024-06-27 22:03:43,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 124 transitions, 861 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-06-27 22:03:43,091 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 598 flow [2024-06-27 22:03:43,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=598, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2024-06-27 22:03:43,092 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-27 22:03:43,092 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 598 flow [2024-06-27 22:03:43,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 22:03:43,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:43,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:43,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:03:43,093 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:43,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:43,093 INFO L85 PathProgramCache]: Analyzing trace with hash -739762971, now seen corresponding path program 3 times [2024-06-27 22:03:43,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:43,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516553684] [2024-06-27 22:03:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:43,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:44,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:44,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516553684] [2024-06-27 22:03:44,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516553684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:44,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:44,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:03:44,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457629529] [2024-06-27 22:03:44,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:44,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:03:44,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:44,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:03:44,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:03:44,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:44,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 598 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 22:03:44,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:44,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:44,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:45,150 INFO L124 PetriNetUnfolderBase]: 4838/7005 cut-off events. [2024-06-27 22:03:45,151 INFO L125 PetriNetUnfolderBase]: For 18770/18785 co-relation queries the response was YES. [2024-06-27 22:03:45,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23641 conditions, 7005 events. 4838/7005 cut-off events. For 18770/18785 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 38693 event pairs, 1572 based on Foata normal form. 12/6838 useless extension candidates. Maximal degree in co-relation 23604. Up to 6708 conditions per place. [2024-06-27 22:03:45,300 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 95 selfloop transitions, 46 changer transitions 0/151 dead transitions. [2024-06-27 22:03:45,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 151 transitions, 1160 flow [2024-06-27 22:03:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:03:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:03:45,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-27 22:03:45,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 22:03:45,304 INFO L175 Difference]: Start difference. First operand has 86 places, 87 transitions, 598 flow. Second operand 7 states and 196 transitions. [2024-06-27 22:03:45,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 151 transitions, 1160 flow [2024-06-27 22:03:45,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 151 transitions, 1044 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 22:03:45,340 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 814 flow [2024-06-27 22:03:45,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=814, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2024-06-27 22:03:45,342 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-27 22:03:45,342 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 814 flow [2024-06-27 22:03:45,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 22:03:45,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:45,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:45,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:03:45,343 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:45,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:45,344 INFO L85 PathProgramCache]: Analyzing trace with hash -194807669, now seen corresponding path program 1 times [2024-06-27 22:03:45,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:45,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755147759] [2024-06-27 22:03:45,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:45,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:46,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:46,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755147759] [2024-06-27 22:03:46,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755147759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:46,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:46,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:03:46,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082236931] [2024-06-27 22:03:46,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:46,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:03:46,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:46,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:03:46,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:03:47,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:47,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 814 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:47,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:47,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:47,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:48,373 INFO L124 PetriNetUnfolderBase]: 5037/7339 cut-off events. [2024-06-27 22:03:48,373 INFO L125 PetriNetUnfolderBase]: For 22328/22328 co-relation queries the response was YES. [2024-06-27 22:03:48,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25150 conditions, 7339 events. 5037/7339 cut-off events. For 22328/22328 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 41617 event pairs, 1693 based on Foata normal form. 17/7167 useless extension candidates. Maximal degree in co-relation 25110. Up to 6848 conditions per place. [2024-06-27 22:03:48,410 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 131 selfloop transitions, 27 changer transitions 0/168 dead transitions. [2024-06-27 22:03:48,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 168 transitions, 1344 flow [2024-06-27 22:03:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:03:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:03:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 22:03:48,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 22:03:48,411 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 814 flow. Second operand 9 states and 224 transitions. [2024-06-27 22:03:48,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 168 transitions, 1344 flow [2024-06-27 22:03:48,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 168 transitions, 1271 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 22:03:48,459 INFO L231 Difference]: Finished difference. Result has 100 places, 115 transitions, 884 flow [2024-06-27 22:03:48,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=884, PETRI_PLACES=100, PETRI_TRANSITIONS=115} [2024-06-27 22:03:48,459 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-27 22:03:48,460 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 115 transitions, 884 flow [2024-06-27 22:03:48,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:48,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:48,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:48,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:03:48,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:48,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash 82386411, now seen corresponding path program 1 times [2024-06-27 22:03:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461645216] [2024-06-27 22:03:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:48,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:49,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:49,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461645216] [2024-06-27 22:03:49,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461645216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:49,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:49,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:03:49,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683926197] [2024-06-27 22:03:49,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:49,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:03:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:03:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:03:49,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:49,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 115 transitions, 884 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:49,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:49,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:49,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:51,537 INFO L124 PetriNetUnfolderBase]: 5267/7732 cut-off events. [2024-06-27 22:03:51,538 INFO L125 PetriNetUnfolderBase]: For 30456/30468 co-relation queries the response was YES. [2024-06-27 22:03:51,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27996 conditions, 7732 events. 5267/7732 cut-off events. For 30456/30468 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 44376 event pairs, 1571 based on Foata normal form. 9/7521 useless extension candidates. Maximal degree in co-relation 27953. Up to 6902 conditions per place. [2024-06-27 22:03:51,577 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 127 selfloop transitions, 70 changer transitions 0/207 dead transitions. [2024-06-27 22:03:51,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 207 transitions, 1764 flow [2024-06-27 22:03:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:51,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-06-27 22:03:51,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5604166666666667 [2024-06-27 22:03:51,580 INFO L175 Difference]: Start difference. First operand has 100 places, 115 transitions, 884 flow. Second operand 10 states and 269 transitions. [2024-06-27 22:03:51,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 207 transitions, 1764 flow [2024-06-27 22:03:51,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 207 transitions, 1694 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 22:03:51,624 INFO L231 Difference]: Finished difference. Result has 110 places, 137 transitions, 1217 flow [2024-06-27 22:03:51,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1217, PETRI_PLACES=110, PETRI_TRANSITIONS=137} [2024-06-27 22:03:51,625 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-27 22:03:51,625 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 137 transitions, 1217 flow [2024-06-27 22:03:51,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:51,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:51,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:51,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:03:51,626 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:51,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:51,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1969648423, now seen corresponding path program 2 times [2024-06-27 22:03:51,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:51,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288043650] [2024-06-27 22:03:51,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:51,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:52,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:52,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288043650] [2024-06-27 22:03:52,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288043650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:52,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:52,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:03:52,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686974879] [2024-06-27 22:03:52,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:52,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:03:52,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:52,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:03:52,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:03:53,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:53,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 137 transitions, 1217 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:53,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:53,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:53,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:54,507 INFO L124 PetriNetUnfolderBase]: 5338/7815 cut-off events. [2024-06-27 22:03:54,507 INFO L125 PetriNetUnfolderBase]: For 48135/48147 co-relation queries the response was YES. [2024-06-27 22:03:54,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30879 conditions, 7815 events. 5338/7815 cut-off events. For 48135/48147 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 44624 event pairs, 1521 based on Foata normal form. 11/7638 useless extension candidates. Maximal degree in co-relation 30832. Up to 7158 conditions per place. [2024-06-27 22:03:54,556 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 128 selfloop transitions, 64 changer transitions 0/202 dead transitions. [2024-06-27 22:03:54,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 202 transitions, 2009 flow [2024-06-27 22:03:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:03:54,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:03:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-27 22:03:54,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-27 22:03:54,558 INFO L175 Difference]: Start difference. First operand has 110 places, 137 transitions, 1217 flow. Second operand 8 states and 219 transitions. [2024-06-27 22:03:54,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 202 transitions, 2009 flow [2024-06-27 22:03:54,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 202 transitions, 1885 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 22:03:54,639 INFO L231 Difference]: Finished difference. Result has 116 places, 151 transitions, 1424 flow [2024-06-27 22:03:54,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1424, PETRI_PLACES=116, PETRI_TRANSITIONS=151} [2024-06-27 22:03:54,640 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-27 22:03:54,640 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 151 transitions, 1424 flow [2024-06-27 22:03:54,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:54,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:54,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:54,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:03:54,641 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:54,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:54,642 INFO L85 PathProgramCache]: Analyzing trace with hash -301543449, now seen corresponding path program 1 times [2024-06-27 22:03:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312322472] [2024-06-27 22:03:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:54,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:54,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312322472] [2024-06-27 22:03:54,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312322472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:54,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:54,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:03:54,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826567072] [2024-06-27 22:03:54,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:54,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:03:54,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:54,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:03:54,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:03:54,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 48 [2024-06-27 22:03:54,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 151 transitions, 1424 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:54,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:54,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 48 [2024-06-27 22:03:54,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:55,350 INFO L124 PetriNetUnfolderBase]: 1641/3288 cut-off events. [2024-06-27 22:03:55,350 INFO L125 PetriNetUnfolderBase]: For 24970/26044 co-relation queries the response was YES. [2024-06-27 22:03:55,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10334 conditions, 3288 events. 1641/3288 cut-off events. For 24970/26044 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24750 event pairs, 296 based on Foata normal form. 166/3202 useless extension candidates. Maximal degree in co-relation 10304. Up to 1951 conditions per place. [2024-06-27 22:03:55,377 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 30 selfloop transitions, 24 changer transitions 0/123 dead transitions. [2024-06-27 22:03:55,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 123 transitions, 1116 flow [2024-06-27 22:03:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:03:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:03:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-27 22:03:55,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7430555555555556 [2024-06-27 22:03:55,379 INFO L175 Difference]: Start difference. First operand has 116 places, 151 transitions, 1424 flow. Second operand 3 states and 107 transitions. [2024-06-27 22:03:55,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 123 transitions, 1116 flow [2024-06-27 22:03:55,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 123 transitions, 1068 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 22:03:55,397 INFO L231 Difference]: Finished difference. Result has 99 places, 115 transitions, 992 flow [2024-06-27 22:03:55,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=992, PETRI_PLACES=99, PETRI_TRANSITIONS=115} [2024-06-27 22:03:55,398 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-27 22:03:55,398 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 115 transitions, 992 flow [2024-06-27 22:03:55,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:55,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:55,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:55,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:03:55,398 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:55,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:55,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1823985514, now seen corresponding path program 1 times [2024-06-27 22:03:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:55,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126294398] [2024-06-27 22:03:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:55,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:56,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:56,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126294398] [2024-06-27 22:03:56,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126294398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:56,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:56,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:03:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111143750] [2024-06-27 22:03:56,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:56,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:03:56,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:03:56,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:03:56,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:56,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 115 transitions, 992 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 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 22:03:56,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:56,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:56,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:58,138 INFO L124 PetriNetUnfolderBase]: 4583/6707 cut-off events. [2024-06-27 22:03:58,138 INFO L125 PetriNetUnfolderBase]: For 35483/35489 co-relation queries the response was YES. [2024-06-27 22:03:58,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25581 conditions, 6707 events. 4583/6707 cut-off events. For 35483/35489 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 37039 event pairs, 1167 based on Foata normal form. 8/6702 useless extension candidates. Maximal degree in co-relation 25557. Up to 6155 conditions per place. [2024-06-27 22:03:58,180 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 105 selfloop transitions, 47 changer transitions 5/167 dead transitions. [2024-06-27 22:03:58,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 167 transitions, 1564 flow [2024-06-27 22:03:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:03:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:03:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-27 22:03:58,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 22:03:58,182 INFO L175 Difference]: Start difference. First operand has 99 places, 115 transitions, 992 flow. Second operand 7 states and 189 transitions. [2024-06-27 22:03:58,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 167 transitions, 1564 flow [2024-06-27 22:03:58,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 167 transitions, 1514 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:03:58,218 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 1075 flow [2024-06-27 22:03:58,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1075, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2024-06-27 22:03:58,219 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-27 22:03:58,219 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 1075 flow [2024-06-27 22:03:58,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 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 22:03:58,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:58,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:58,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:03:58,220 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:03:58,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash 259755081, now seen corresponding path program 2 times [2024-06-27 22:03:58,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:58,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180591137] [2024-06-27 22:03:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:58,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:59,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:59,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180591137] [2024-06-27 22:03:59,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180591137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:59,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:59,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:03:59,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952983560] [2024-06-27 22:03:59,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:59,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:03:59,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:59,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:03:59,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:03:59,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:03:59,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 1075 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:59,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:59,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:03:59,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:00,846 INFO L124 PetriNetUnfolderBase]: 3999/5881 cut-off events. [2024-06-27 22:04:00,846 INFO L125 PetriNetUnfolderBase]: For 34392/34398 co-relation queries the response was YES. [2024-06-27 22:04:00,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23114 conditions, 5881 events. 3999/5881 cut-off events. For 34392/34398 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 32127 event pairs, 1048 based on Foata normal form. 8/5876 useless extension candidates. Maximal degree in co-relation 23089. Up to 5387 conditions per place. [2024-06-27 22:04:00,884 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 96 selfloop transitions, 51 changer transitions 0/157 dead transitions. [2024-06-27 22:04:00,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 157 transitions, 1531 flow [2024-06-27 22:04:00,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:04:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:04:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:04:00,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 22:04:00,886 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 1075 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:04:00,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 157 transitions, 1531 flow [2024-06-27 22:04:00,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 157 transitions, 1454 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 22:04:00,938 INFO L231 Difference]: Finished difference. Result has 107 places, 117 transitions, 1108 flow [2024-06-27 22:04:00,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1108, PETRI_PLACES=107, PETRI_TRANSITIONS=117} [2024-06-27 22:04:00,939 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-27 22:04:00,939 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 117 transitions, 1108 flow [2024-06-27 22:04:00,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:00,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:00,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:00,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:04:00,940 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:00,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash -190046069, now seen corresponding path program 3 times [2024-06-27 22:04:00,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:00,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750010556] [2024-06-27 22:04:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:00,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:02,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:02,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750010556] [2024-06-27 22:04:02,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750010556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:02,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:02,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:02,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383651407] [2024-06-27 22:04:02,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:02,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:02,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:02,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:02,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 1108 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:02,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:02,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:02,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:03,292 INFO L124 PetriNetUnfolderBase]: 3994/5871 cut-off events. [2024-06-27 22:04:03,293 INFO L125 PetriNetUnfolderBase]: For 37249/37249 co-relation queries the response was YES. [2024-06-27 22:04:03,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23280 conditions, 5871 events. 3994/5871 cut-off events. For 37249/37249 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 31998 event pairs, 1151 based on Foata normal form. 2/5855 useless extension candidates. Maximal degree in co-relation 23254. Up to 5437 conditions per place. [2024-06-27 22:04:03,334 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 97 selfloop transitions, 49 changer transitions 0/156 dead transitions. [2024-06-27 22:04:03,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 156 transitions, 1570 flow [2024-06-27 22:04:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:04:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:04:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:04:03,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 22:04:03,336 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 1108 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:04:03,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 156 transitions, 1570 flow [2024-06-27 22:04:03,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 156 transitions, 1499 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 22:04:03,378 INFO L231 Difference]: Finished difference. Result has 111 places, 117 transitions, 1146 flow [2024-06-27 22:04:03,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1146, PETRI_PLACES=111, PETRI_TRANSITIONS=117} [2024-06-27 22:04:03,379 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-27 22:04:03,379 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 117 transitions, 1146 flow [2024-06-27 22:04:03,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:03,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:03,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:03,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:04:03,380 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:03,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1259818173, now seen corresponding path program 4 times [2024-06-27 22:04:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:03,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726352116] [2024-06-27 22:04:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:03,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:04,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:04,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726352116] [2024-06-27 22:04:04,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726352116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:04,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:04,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:04,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993385509] [2024-06-27 22:04:04,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:04,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:04,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:04,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:04,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 117 transitions, 1146 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:04,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:04,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:04,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:05,481 INFO L124 PetriNetUnfolderBase]: 4148/6117 cut-off events. [2024-06-27 22:04:05,482 INFO L125 PetriNetUnfolderBase]: For 42048/42050 co-relation queries the response was YES. [2024-06-27 22:04:05,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24701 conditions, 6117 events. 4148/6117 cut-off events. For 42048/42050 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 33561 event pairs, 1133 based on Foata normal form. 4/6109 useless extension candidates. Maximal degree in co-relation 24674. Up to 5749 conditions per place. [2024-06-27 22:04:05,525 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 143 selfloop transitions, 51 changer transitions 0/204 dead transitions. [2024-06-27 22:04:05,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 204 transitions, 2037 flow [2024-06-27 22:04:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-27 22:04:05,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-27 22:04:05,528 INFO L175 Difference]: Start difference. First operand has 111 places, 117 transitions, 1146 flow. Second operand 9 states and 238 transitions. [2024-06-27 22:04:05,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 204 transitions, 2037 flow [2024-06-27 22:04:05,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 204 transitions, 1892 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 22:04:05,570 INFO L231 Difference]: Finished difference. Result has 115 places, 142 transitions, 1400 flow [2024-06-27 22:04:05,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1400, PETRI_PLACES=115, PETRI_TRANSITIONS=142} [2024-06-27 22:04:05,571 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-27 22:04:05,571 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 142 transitions, 1400 flow [2024-06-27 22:04:05,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:05,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:05,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:05,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:04:05,572 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:05,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash 975142893, now seen corresponding path program 5 times [2024-06-27 22:04:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:05,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727081205] [2024-06-27 22:04:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:05,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:06,699 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 22:04:06,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:06,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727081205] [2024-06-27 22:04:06,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727081205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:06,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:06,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:06,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200867719] [2024-06-27 22:04:06,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:06,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:06,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:06,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:06,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:06,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:06,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 142 transitions, 1400 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:06,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:06,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:06,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:07,988 INFO L124 PetriNetUnfolderBase]: 4249/6302 cut-off events. [2024-06-27 22:04:07,988 INFO L125 PetriNetUnfolderBase]: For 47621/47623 co-relation queries the response was YES. [2024-06-27 22:04:08,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26240 conditions, 6302 events. 4249/6302 cut-off events. For 47621/47623 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 34952 event pairs, 1142 based on Foata normal form. 5/6283 useless extension candidates. Maximal degree in co-relation 26210. Up to 5892 conditions per place. [2024-06-27 22:04:08,119 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 142 selfloop transitions, 59 changer transitions 0/211 dead transitions. [2024-06-27 22:04:08,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 211 transitions, 2204 flow [2024-06-27 22:04:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:04:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:04:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-27 22:04:08,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 22:04:08,121 INFO L175 Difference]: Start difference. First operand has 115 places, 142 transitions, 1400 flow. Second operand 7 states and 189 transitions. [2024-06-27 22:04:08,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 211 transitions, 2204 flow [2024-06-27 22:04:08,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 211 transitions, 2059 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-27 22:04:08,165 INFO L231 Difference]: Finished difference. Result has 119 places, 167 transitions, 1699 flow [2024-06-27 22:04:08,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1699, PETRI_PLACES=119, PETRI_TRANSITIONS=167} [2024-06-27 22:04:08,166 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-27 22:04:08,166 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 167 transitions, 1699 flow [2024-06-27 22:04:08,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:08,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:08,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:08,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:04:08,167 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:08,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:08,168 INFO L85 PathProgramCache]: Analyzing trace with hash 975263049, now seen corresponding path program 3 times [2024-06-27 22:04:08,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:08,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768118700] [2024-06-27 22:04:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:08,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:09,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:09,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768118700] [2024-06-27 22:04:09,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768118700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:09,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:09,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:09,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176852127] [2024-06-27 22:04:09,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:09,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:09,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:09,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 167 transitions, 1699 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:09,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:09,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:09,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:10,430 INFO L124 PetriNetUnfolderBase]: 4391/6534 cut-off events. [2024-06-27 22:04:10,430 INFO L125 PetriNetUnfolderBase]: For 51133/51141 co-relation queries the response was YES. [2024-06-27 22:04:10,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27409 conditions, 6534 events. 4391/6534 cut-off events. For 51133/51141 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 36660 event pairs, 1195 based on Foata normal form. 7/6506 useless extension candidates. Maximal degree in co-relation 27377. Up to 5855 conditions per place. [2024-06-27 22:04:10,471 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 155 selfloop transitions, 63 changer transitions 0/228 dead transitions. [2024-06-27 22:04:10,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 228 transitions, 2394 flow [2024-06-27 22:04:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:04:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:04:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-27 22:04:10,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 22:04:10,473 INFO L175 Difference]: Start difference. First operand has 119 places, 167 transitions, 1699 flow. Second operand 7 states and 196 transitions. [2024-06-27 22:04:10,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 228 transitions, 2394 flow [2024-06-27 22:04:10,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 228 transitions, 2330 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 22:04:10,540 INFO L231 Difference]: Finished difference. Result has 125 places, 181 transitions, 1905 flow [2024-06-27 22:04:10,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1905, PETRI_PLACES=125, PETRI_TRANSITIONS=181} [2024-06-27 22:04:10,541 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-27 22:04:10,541 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 181 transitions, 1905 flow [2024-06-27 22:04:10,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:10,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:10,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:10,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:04:10,542 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:10,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:10,542 INFO L85 PathProgramCache]: Analyzing trace with hash 975262863, now seen corresponding path program 6 times [2024-06-27 22:04:10,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:10,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652599790] [2024-06-27 22:04:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:10,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:11,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:11,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652599790] [2024-06-27 22:04:11,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652599790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:11,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:11,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:11,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317387798] [2024-06-27 22:04:11,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:11,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:11,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:11,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:11,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 181 transitions, 1905 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:11,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:11,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:11,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:12,726 INFO L124 PetriNetUnfolderBase]: 4443/6600 cut-off events. [2024-06-27 22:04:12,726 INFO L125 PetriNetUnfolderBase]: For 56084/56087 co-relation queries the response was YES. [2024-06-27 22:04:12,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28636 conditions, 6600 events. 4443/6600 cut-off events. For 56084/56087 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 36853 event pairs, 1280 based on Foata normal form. 4/6571 useless extension candidates. Maximal degree in co-relation 28602. Up to 5921 conditions per place. [2024-06-27 22:04:12,768 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 120 selfloop transitions, 107 changer transitions 0/237 dead transitions. [2024-06-27 22:04:12,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 237 transitions, 2643 flow [2024-06-27 22:04:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:04:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:04:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 22:04:12,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 22:04:12,773 INFO L175 Difference]: Start difference. First operand has 125 places, 181 transitions, 1905 flow. Second operand 7 states and 192 transitions. [2024-06-27 22:04:12,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 237 transitions, 2643 flow [2024-06-27 22:04:12,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 237 transitions, 2437 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:12,824 INFO L231 Difference]: Finished difference. Result has 128 places, 194 transitions, 2099 flow [2024-06-27 22:04:12,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2099, PETRI_PLACES=128, PETRI_TRANSITIONS=194} [2024-06-27 22:04:12,825 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-27 22:04:12,825 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 194 transitions, 2099 flow [2024-06-27 22:04:12,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:12,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:12,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:12,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:04:12,825 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:12,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash -785300250, now seen corresponding path program 1 times [2024-06-27 22:04:12,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:12,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967241019] [2024-06-27 22:04:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:12,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:13,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:13,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967241019] [2024-06-27 22:04:13,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967241019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:13,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:13,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:04:13,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011318195] [2024-06-27 22:04:13,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:13,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:04:13,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:04:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:04:13,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:04:13,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 194 transitions, 2099 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:13,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:13,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:04:13,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:14,920 INFO L124 PetriNetUnfolderBase]: 3662/6347 cut-off events. [2024-06-27 22:04:14,920 INFO L125 PetriNetUnfolderBase]: For 52476/52481 co-relation queries the response was YES. [2024-06-27 22:04:14,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25015 conditions, 6347 events. 3662/6347 cut-off events. For 52476/52481 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 42862 event pairs, 1506 based on Foata normal form. 2/6152 useless extension candidates. Maximal degree in co-relation 24980. Up to 5186 conditions per place. [2024-06-27 22:04:14,972 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 166 selfloop transitions, 12 changer transitions 0/213 dead transitions. [2024-06-27 22:04:14,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 213 transitions, 2579 flow [2024-06-27 22:04:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:04:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:04:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-27 22:04:14,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 22:04:14,974 INFO L175 Difference]: Start difference. First operand has 128 places, 194 transitions, 2099 flow. Second operand 5 states and 126 transitions. [2024-06-27 22:04:14,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 213 transitions, 2579 flow [2024-06-27 22:04:15,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 213 transitions, 2347 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 22:04:15,036 INFO L231 Difference]: Finished difference. Result has 130 places, 202 transitions, 1993 flow [2024-06-27 22:04:15,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1993, PETRI_PLACES=130, PETRI_TRANSITIONS=202} [2024-06-27 22:04:15,037 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-27 22:04:15,037 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 202 transitions, 1993 flow [2024-06-27 22:04:15,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:15,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:15,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:15,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:04:15,037 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:15,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1744711807, now seen corresponding path program 1 times [2024-06-27 22:04:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:15,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444313201] [2024-06-27 22:04:15,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:15,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:16,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:16,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444313201] [2024-06-27 22:04:16,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444313201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:16,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:16,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:16,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857738370] [2024-06-27 22:04:16,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:16,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:16,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:16,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:16,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:16,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:16,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 202 transitions, 1993 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:16,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:16,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:16,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:17,907 INFO L124 PetriNetUnfolderBase]: 4486/6852 cut-off events. [2024-06-27 22:04:17,908 INFO L125 PetriNetUnfolderBase]: For 65375/65375 co-relation queries the response was YES. [2024-06-27 22:04:17,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29391 conditions, 6852 events. 4486/6852 cut-off events. For 65375/65375 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 40086 event pairs, 1136 based on Foata normal form. 4/6781 useless extension candidates. Maximal degree in co-relation 29355. Up to 6154 conditions per place. [2024-06-27 22:04:17,959 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 177 selfloop transitions, 62 changer transitions 0/249 dead transitions. [2024-06-27 22:04:17,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 249 transitions, 2685 flow [2024-06-27 22:04:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 22:04:17,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:04:17,960 INFO L175 Difference]: Start difference. First operand has 130 places, 202 transitions, 1993 flow. Second operand 9 states and 216 transitions. [2024-06-27 22:04:17,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 249 transitions, 2685 flow [2024-06-27 22:04:18,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 249 transitions, 2670 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 22:04:18,025 INFO L231 Difference]: Finished difference. Result has 138 places, 205 transitions, 2155 flow [2024-06-27 22:04:18,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2155, PETRI_PLACES=138, PETRI_TRANSITIONS=205} [2024-06-27 22:04:18,026 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-27 22:04:18,026 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 205 transitions, 2155 flow [2024-06-27 22:04:18,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:18,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:18,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:18,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:04:18,027 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:18,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:18,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1740344209, now seen corresponding path program 2 times [2024-06-27 22:04:18,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:18,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909287568] [2024-06-27 22:04:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:18,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:19,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:19,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909287568] [2024-06-27 22:04:19,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909287568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:19,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:19,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:19,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638372000] [2024-06-27 22:04:19,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:19,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:19,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:19,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:19,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:19,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:19,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 205 transitions, 2155 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:19,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:19,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:19,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:20,977 INFO L124 PetriNetUnfolderBase]: 4644/7018 cut-off events. [2024-06-27 22:04:20,977 INFO L125 PetriNetUnfolderBase]: For 77376/77379 co-relation queries the response was YES. [2024-06-27 22:04:21,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32022 conditions, 7018 events. 4644/7018 cut-off events. For 77376/77379 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 40558 event pairs, 905 based on Foata normal form. 4/6954 useless extension candidates. Maximal degree in co-relation 31984. Up to 5536 conditions per place. [2024-06-27 22:04:21,039 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 145 selfloop transitions, 122 changer transitions 0/277 dead transitions. [2024-06-27 22:04:21,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 277 transitions, 3359 flow [2024-06-27 22:04:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:21,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-27 22:04:21,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2024-06-27 22:04:21,041 INFO L175 Difference]: Start difference. First operand has 138 places, 205 transitions, 2155 flow. Second operand 8 states and 218 transitions. [2024-06-27 22:04:21,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 277 transitions, 3359 flow [2024-06-27 22:04:21,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 277 transitions, 3216 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 22:04:21,130 INFO L231 Difference]: Finished difference. Result has 139 places, 217 transitions, 2434 flow [2024-06-27 22:04:21,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2434, PETRI_PLACES=139, PETRI_TRANSITIONS=217} [2024-06-27 22:04:21,130 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2024-06-27 22:04:21,131 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 217 transitions, 2434 flow [2024-06-27 22:04:21,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:21,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:21,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:21,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:04:21,131 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:21,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:21,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1740349789, now seen corresponding path program 3 times [2024-06-27 22:04:21,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:21,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192736445] [2024-06-27 22:04:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:21,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:22,538 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 22:04:22,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:22,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192736445] [2024-06-27 22:04:22,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192736445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:22,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:22,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:22,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4691010] [2024-06-27 22:04:22,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:22,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:22,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:22,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 217 transitions, 2434 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:22,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:22,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:22,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:24,053 INFO L124 PetriNetUnfolderBase]: 4634/7004 cut-off events. [2024-06-27 22:04:24,054 INFO L125 PetriNetUnfolderBase]: For 86211/86214 co-relation queries the response was YES. [2024-06-27 22:04:24,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33204 conditions, 7004 events. 4634/7004 cut-off events. For 86211/86214 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 40376 event pairs, 903 based on Foata normal form. 4/6940 useless extension candidates. Maximal degree in co-relation 33165. Up to 5528 conditions per place. [2024-06-27 22:04:24,108 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 151 selfloop transitions, 116 changer transitions 0/277 dead transitions. [2024-06-27 22:04:24,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 277 transitions, 3416 flow [2024-06-27 22:04:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-27 22:04:24,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2024-06-27 22:04:24,110 INFO L175 Difference]: Start difference. First operand has 139 places, 217 transitions, 2434 flow. Second operand 8 states and 218 transitions. [2024-06-27 22:04:24,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 277 transitions, 3416 flow [2024-06-27 22:04:24,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 277 transitions, 3304 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 22:04:24,200 INFO L231 Difference]: Finished difference. Result has 145 places, 217 transitions, 2566 flow [2024-06-27 22:04:24,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2566, PETRI_PLACES=145, PETRI_TRANSITIONS=217} [2024-06-27 22:04:24,201 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 91 predicate places. [2024-06-27 22:04:24,201 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 217 transitions, 2566 flow [2024-06-27 22:04:24,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:24,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:24,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:24,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:04:24,201 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:24,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash 480279279, now seen corresponding path program 4 times [2024-06-27 22:04:24,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:24,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831093412] [2024-06-27 22:04:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:24,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:25,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:25,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831093412] [2024-06-27 22:04:25,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831093412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:25,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:25,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:25,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187785569] [2024-06-27 22:04:25,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:25,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:25,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:25,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:25,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:25,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:25,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 217 transitions, 2566 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:25,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:25,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:25,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:27,132 INFO L124 PetriNetUnfolderBase]: 4736/7116 cut-off events. [2024-06-27 22:04:27,132 INFO L125 PetriNetUnfolderBase]: For 95322/95322 co-relation queries the response was YES. [2024-06-27 22:04:27,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35055 conditions, 7116 events. 4736/7116 cut-off events. For 95322/95322 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 40871 event pairs, 915 based on Foata normal form. 4/7071 useless extension candidates. Maximal degree in co-relation 35014. Up to 5614 conditions per place. [2024-06-27 22:04:27,202 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 150 selfloop transitions, 123 changer transitions 0/283 dead transitions. [2024-06-27 22:04:27,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 283 transitions, 3752 flow [2024-06-27 22:04:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 22:04:27,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 22:04:27,203 INFO L175 Difference]: Start difference. First operand has 145 places, 217 transitions, 2566 flow. Second operand 8 states and 216 transitions. [2024-06-27 22:04:27,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 283 transitions, 3752 flow [2024-06-27 22:04:27,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 283 transitions, 3502 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:27,299 INFO L231 Difference]: Finished difference. Result has 148 places, 223 transitions, 2673 flow [2024-06-27 22:04:27,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2328, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2673, PETRI_PLACES=148, PETRI_TRANSITIONS=223} [2024-06-27 22:04:27,300 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-27 22:04:27,300 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 223 transitions, 2673 flow [2024-06-27 22:04:27,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:27,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:27,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:27,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:04:27,300 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:27,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:27,301 INFO L85 PathProgramCache]: Analyzing trace with hash -544882913, now seen corresponding path program 5 times [2024-06-27 22:04:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:27,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270877640] [2024-06-27 22:04:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:28,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:28,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270877640] [2024-06-27 22:04:28,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270877640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:28,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:28,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:28,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310436044] [2024-06-27 22:04:28,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:28,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:28,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:28,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:28,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 223 transitions, 2673 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:28,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:28,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:28,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:30,161 INFO L124 PetriNetUnfolderBase]: 4726/7102 cut-off events. [2024-06-27 22:04:30,162 INFO L125 PetriNetUnfolderBase]: For 99047/99047 co-relation queries the response was YES. [2024-06-27 22:04:30,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35086 conditions, 7102 events. 4726/7102 cut-off events. For 99047/99047 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 40728 event pairs, 913 based on Foata normal form. 4/7057 useless extension candidates. Maximal degree in co-relation 35044. Up to 5606 conditions per place. [2024-06-27 22:04:30,221 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 143 selfloop transitions, 125 changer transitions 0/278 dead transitions. [2024-06-27 22:04:30,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 278 transitions, 3643 flow [2024-06-27 22:04:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 22:04:30,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-27 22:04:30,222 INFO L175 Difference]: Start difference. First operand has 148 places, 223 transitions, 2673 flow. Second operand 8 states and 213 transitions. [2024-06-27 22:04:30,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 278 transitions, 3643 flow [2024-06-27 22:04:30,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 278 transitions, 3453 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 22:04:30,343 INFO L231 Difference]: Finished difference. Result has 153 places, 223 transitions, 2744 flow [2024-06-27 22:04:30,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2483, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2744, PETRI_PLACES=153, PETRI_TRANSITIONS=223} [2024-06-27 22:04:30,344 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-27 22:04:30,344 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 223 transitions, 2744 flow [2024-06-27 22:04:30,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:30,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:30,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:30,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:04:30,344 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:30,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:30,345 INFO L85 PathProgramCache]: Analyzing trace with hash -537525683, now seen corresponding path program 6 times [2024-06-27 22:04:30,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:30,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875315888] [2024-06-27 22:04:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:30,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:31,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:31,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875315888] [2024-06-27 22:04:31,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875315888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:31,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:31,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766454757] [2024-06-27 22:04:31,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:31,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:31,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:31,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:31,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 223 transitions, 2744 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:31,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:31,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:31,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:33,132 INFO L124 PetriNetUnfolderBase]: 4716/7107 cut-off events. [2024-06-27 22:04:33,132 INFO L125 PetriNetUnfolderBase]: For 104811/104811 co-relation queries the response was YES. [2024-06-27 22:04:33,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35041 conditions, 7107 events. 4716/7107 cut-off events. For 104811/104811 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 41041 event pairs, 927 based on Foata normal form. 4/7054 useless extension candidates. Maximal degree in co-relation 34998. Up to 5598 conditions per place. [2024-06-27 22:04:33,198 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 120 selfloop transitions, 141 changer transitions 0/271 dead transitions. [2024-06-27 22:04:33,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 271 transitions, 3560 flow [2024-06-27 22:04:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:04:33,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-27 22:04:33,200 INFO L175 Difference]: Start difference. First operand has 153 places, 223 transitions, 2744 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:04:33,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 271 transitions, 3560 flow [2024-06-27 22:04:33,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 271 transitions, 3301 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:33,319 INFO L231 Difference]: Finished difference. Result has 156 places, 223 transitions, 2778 flow [2024-06-27 22:04:33,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2778, PETRI_PLACES=156, PETRI_TRANSITIONS=223} [2024-06-27 22:04:33,320 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 102 predicate places. [2024-06-27 22:04:33,320 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 223 transitions, 2778 flow [2024-06-27 22:04:33,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:33,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:33,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:33,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:04:33,320 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:33,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:33,320 INFO L85 PathProgramCache]: Analyzing trace with hash -388931355, now seen corresponding path program 7 times [2024-06-27 22:04:33,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:33,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024070195] [2024-06-27 22:04:33,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:33,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:34,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:34,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024070195] [2024-06-27 22:04:34,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024070195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:34,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:34,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:34,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410995855] [2024-06-27 22:04:34,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:34,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:34,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:34,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:34,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:34,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 223 transitions, 2778 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:34,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:34,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:34,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:35,865 INFO L124 PetriNetUnfolderBase]: 4938/7605 cut-off events. [2024-06-27 22:04:35,865 INFO L125 PetriNetUnfolderBase]: For 118580/118582 co-relation queries the response was YES. [2024-06-27 22:04:35,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37438 conditions, 7605 events. 4938/7605 cut-off events. For 118580/118582 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 45726 event pairs, 1256 based on Foata normal form. 6/7533 useless extension candidates. Maximal degree in co-relation 37394. Up to 6579 conditions per place. [2024-06-27 22:04:35,936 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 207 selfloop transitions, 93 changer transitions 0/310 dead transitions. [2024-06-27 22:04:35,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 310 transitions, 4046 flow [2024-06-27 22:04:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-27 22:04:35,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-27 22:04:35,937 INFO L175 Difference]: Start difference. First operand has 156 places, 223 transitions, 2778 flow. Second operand 10 states and 267 transitions. [2024-06-27 22:04:35,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 310 transitions, 4046 flow [2024-06-27 22:04:36,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 310 transitions, 3852 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:04:36,060 INFO L231 Difference]: Finished difference. Result has 163 places, 240 transitions, 3069 flow [2024-06-27 22:04:36,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2617, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3069, PETRI_PLACES=163, PETRI_TRANSITIONS=240} [2024-06-27 22:04:36,061 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-27 22:04:36,061 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 240 transitions, 3069 flow [2024-06-27 22:04:36,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:36,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:36,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:36,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:04:36,062 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:36,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:36,062 INFO L85 PathProgramCache]: Analyzing trace with hash 164660195, now seen corresponding path program 8 times [2024-06-27 22:04:36,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:36,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663545557] [2024-06-27 22:04:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:36,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:37,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:37,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663545557] [2024-06-27 22:04:37,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663545557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:37,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:37,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:37,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266523792] [2024-06-27 22:04:37,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:37,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:37,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:37,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:37,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 240 transitions, 3069 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:37,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:37,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:37,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:38,647 INFO L124 PetriNetUnfolderBase]: 5042/7810 cut-off events. [2024-06-27 22:04:38,647 INFO L125 PetriNetUnfolderBase]: For 128189/128191 co-relation queries the response was YES. [2024-06-27 22:04:38,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38222 conditions, 7810 events. 5042/7810 cut-off events. For 128189/128191 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 47513 event pairs, 1288 based on Foata normal form. 8/7722 useless extension candidates. Maximal degree in co-relation 38176. Up to 6845 conditions per place. [2024-06-27 22:04:38,712 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 213 selfloop transitions, 80 changer transitions 0/303 dead transitions. [2024-06-27 22:04:38,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 303 transitions, 4042 flow [2024-06-27 22:04:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 22:04:38,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2024-06-27 22:04:38,714 INFO L175 Difference]: Start difference. First operand has 163 places, 240 transitions, 3069 flow. Second operand 8 states and 214 transitions. [2024-06-27 22:04:38,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 303 transitions, 4042 flow [2024-06-27 22:04:38,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 303 transitions, 3873 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:38,894 INFO L231 Difference]: Finished difference. Result has 166 places, 252 transitions, 3283 flow [2024-06-27 22:04:38,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2930, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3283, PETRI_PLACES=166, PETRI_TRANSITIONS=252} [2024-06-27 22:04:38,894 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-27 22:04:38,895 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 252 transitions, 3283 flow [2024-06-27 22:04:38,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:38,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:38,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:38,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:04:38,895 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:38,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 168379265, now seen corresponding path program 9 times [2024-06-27 22:04:38,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:38,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377779400] [2024-06-27 22:04:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:38,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:40,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:40,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377779400] [2024-06-27 22:04:40,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377779400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:40,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:40,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:40,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525831375] [2024-06-27 22:04:40,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:40,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:40,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:40,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:40,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 252 transitions, 3283 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:40,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:40,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:40,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:41,610 INFO L124 PetriNetUnfolderBase]: 5354/8227 cut-off events. [2024-06-27 22:04:41,611 INFO L125 PetriNetUnfolderBase]: For 135720/135723 co-relation queries the response was YES. [2024-06-27 22:04:41,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40506 conditions, 8227 events. 5354/8227 cut-off events. For 135720/135723 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 49977 event pairs, 1060 based on Foata normal form. 4/8152 useless extension candidates. Maximal degree in co-relation 40458. Up to 6151 conditions per place. [2024-06-27 22:04:41,689 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 142 selfloop transitions, 187 changer transitions 0/339 dead transitions. [2024-06-27 22:04:41,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 339 transitions, 4579 flow [2024-06-27 22:04:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2024-06-27 22:04:41,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5963541666666666 [2024-06-27 22:04:41,690 INFO L175 Difference]: Start difference. First operand has 166 places, 252 transitions, 3283 flow. Second operand 8 states and 229 transitions. [2024-06-27 22:04:41,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 339 transitions, 4579 flow [2024-06-27 22:04:41,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 339 transitions, 4435 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:04:41,869 INFO L231 Difference]: Finished difference. Result has 169 places, 280 transitions, 3876 flow [2024-06-27 22:04:41,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3876, PETRI_PLACES=169, PETRI_TRANSITIONS=280} [2024-06-27 22:04:41,870 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-27 22:04:41,870 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 280 transitions, 3876 flow [2024-06-27 22:04:41,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:41,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:41,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:41,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:04:41,871 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:41,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash 168384845, now seen corresponding path program 10 times [2024-06-27 22:04:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:41,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571026234] [2024-06-27 22:04:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:41,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:43,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:43,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571026234] [2024-06-27 22:04:43,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571026234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:43,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:43,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:43,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288858281] [2024-06-27 22:04:43,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:43,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:43,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:43,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 280 transitions, 3876 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:43,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:43,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:43,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:44,831 INFO L124 PetriNetUnfolderBase]: 5344/8213 cut-off events. [2024-06-27 22:04:44,831 INFO L125 PetriNetUnfolderBase]: For 148197/148200 co-relation queries the response was YES. [2024-06-27 22:04:44,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42384 conditions, 8213 events. 5344/8213 cut-off events. For 148197/148200 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 49915 event pairs, 1060 based on Foata normal form. 4/8138 useless extension candidates. Maximal degree in co-relation 42334. Up to 6143 conditions per place. [2024-06-27 22:04:44,890 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 131 selfloop transitions, 195 changer transitions 0/336 dead transitions. [2024-06-27 22:04:44,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 336 transitions, 4790 flow [2024-06-27 22:04:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:04:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:04:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-06-27 22:04:44,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-06-27 22:04:44,892 INFO L175 Difference]: Start difference. First operand has 169 places, 280 transitions, 3876 flow. Second operand 8 states and 225 transitions. [2024-06-27 22:04:44,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 336 transitions, 4790 flow [2024-06-27 22:04:45,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 336 transitions, 4139 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-06-27 22:04:45,053 INFO L231 Difference]: Finished difference. Result has 171 places, 280 transitions, 3647 flow [2024-06-27 22:04:45,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3647, PETRI_PLACES=171, PETRI_TRANSITIONS=280} [2024-06-27 22:04:45,053 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-27 22:04:45,053 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 280 transitions, 3647 flow [2024-06-27 22:04:45,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:45,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:45,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:45,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:04:45,054 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:45,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash -583036378, now seen corresponding path program 1 times [2024-06-27 22:04:45,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:45,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909836026] [2024-06-27 22:04:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:45,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:47,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:47,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909836026] [2024-06-27 22:04:47,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909836026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:47,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:47,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:47,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361429941] [2024-06-27 22:04:47,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:47,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:47,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:47,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:47,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:04:47,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 280 transitions, 3647 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 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 22:04:47,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:47,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:04:47,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:48,827 INFO L124 PetriNetUnfolderBase]: 4813/8009 cut-off events. [2024-06-27 22:04:48,827 INFO L125 PetriNetUnfolderBase]: For 128959/128959 co-relation queries the response was YES. [2024-06-27 22:04:48,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38096 conditions, 8009 events. 4813/8009 cut-off events. For 128959/128959 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 53501 event pairs, 1495 based on Foata normal form. 4/7832 useless extension candidates. Maximal degree in co-relation 38046. Up to 6745 conditions per place. [2024-06-27 22:04:48,909 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 295 selfloop transitions, 21 changer transitions 0/327 dead transitions. [2024-06-27 22:04:48,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 327 transitions, 4551 flow [2024-06-27 22:04:48,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:48,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 22:04:48,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-27 22:04:48,911 INFO L175 Difference]: Start difference. First operand has 171 places, 280 transitions, 3647 flow. Second operand 9 states and 217 transitions. [2024-06-27 22:04:48,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 327 transitions, 4551 flow [2024-06-27 22:04:49,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 327 transitions, 4149 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:04:49,073 INFO L231 Difference]: Finished difference. Result has 174 places, 285 transitions, 3372 flow [2024-06-27 22:04:49,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3249, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3372, PETRI_PLACES=174, PETRI_TRANSITIONS=285} [2024-06-27 22:04:49,073 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-27 22:04:49,074 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 285 transitions, 3372 flow [2024-06-27 22:04:49,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 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 22:04:49,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:49,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:49,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:04:49,074 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:49,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:49,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1425497198, now seen corresponding path program 1 times [2024-06-27 22:04:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:49,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432726307] [2024-06-27 22:04:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:49,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:51,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:51,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432726307] [2024-06-27 22:04:51,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432726307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:51,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:51,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:04:51,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051128566] [2024-06-27 22:04:51,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:51,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:04:51,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:04:51,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:04:51,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:04:51,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 285 transitions, 3372 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:51,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:51,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:04:51,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:52,386 INFO L124 PetriNetUnfolderBase]: 5016/8150 cut-off events. [2024-06-27 22:04:52,386 INFO L125 PetriNetUnfolderBase]: For 141444/141479 co-relation queries the response was YES. [2024-06-27 22:04:52,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38580 conditions, 8150 events. 5016/8150 cut-off events. For 141444/141479 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 53652 event pairs, 1640 based on Foata normal form. 18/7973 useless extension candidates. Maximal degree in co-relation 38528. Up to 7045 conditions per place. [2024-06-27 22:04:52,599 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 255 selfloop transitions, 15 changer transitions 0/304 dead transitions. [2024-06-27 22:04:52,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 304 transitions, 4014 flow [2024-06-27 22:04:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:04:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:04:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 22:04:52,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-27 22:04:52,601 INFO L175 Difference]: Start difference. First operand has 174 places, 285 transitions, 3372 flow. Second operand 7 states and 158 transitions. [2024-06-27 22:04:52,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 304 transitions, 4014 flow [2024-06-27 22:04:52,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 304 transitions, 3925 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:52,730 INFO L231 Difference]: Finished difference. Result has 176 places, 288 transitions, 3349 flow [2024-06-27 22:04:52,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3349, PETRI_PLACES=176, PETRI_TRANSITIONS=288} [2024-06-27 22:04:52,731 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-27 22:04:52,731 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 288 transitions, 3349 flow [2024-06-27 22:04:52,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:52,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:52,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:52,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:04:52,732 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:52,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:52,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1748505486, now seen corresponding path program 1 times [2024-06-27 22:04:52,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:52,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763930690] [2024-06-27 22:04:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:52,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:54,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:54,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763930690] [2024-06-27 22:04:54,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763930690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:54,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:54,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:54,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650113371] [2024-06-27 22:04:54,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:54,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:54,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:54,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:54,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:54,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:54,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 288 transitions, 3349 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:54,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:54,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:54,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:56,007 INFO L124 PetriNetUnfolderBase]: 5395/8374 cut-off events. [2024-06-27 22:04:56,008 INFO L125 PetriNetUnfolderBase]: For 149479/149479 co-relation queries the response was YES. [2024-06-27 22:04:56,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41713 conditions, 8374 events. 5395/8374 cut-off events. For 149479/149479 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 51551 event pairs, 1173 based on Foata normal form. 4/8270 useless extension candidates. Maximal degree in co-relation 41660. Up to 7424 conditions per place. [2024-06-27 22:04:56,080 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 279 selfloop transitions, 63 changer transitions 0/352 dead transitions. [2024-06-27 22:04:56,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 352 transitions, 4519 flow [2024-06-27 22:04:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 22:04:56,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-27 22:04:56,082 INFO L175 Difference]: Start difference. First operand has 176 places, 288 transitions, 3349 flow. Second operand 9 states and 215 transitions. [2024-06-27 22:04:56,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 352 transitions, 4519 flow [2024-06-27 22:04:56,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 352 transitions, 4473 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:56,246 INFO L231 Difference]: Finished difference. Result has 181 places, 310 transitions, 3806 flow [2024-06-27 22:04:56,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3806, PETRI_PLACES=181, PETRI_TRANSITIONS=310} [2024-06-27 22:04:56,246 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 127 predicate places. [2024-06-27 22:04:56,246 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 310 transitions, 3806 flow [2024-06-27 22:04:56,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:56,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:56,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:56,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:04:56,247 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:56,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:56,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1745648526, now seen corresponding path program 2 times [2024-06-27 22:04:56,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:56,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768736300] [2024-06-27 22:04:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:56,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:57,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:57,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768736300] [2024-06-27 22:04:57,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768736300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:57,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:57,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:04:57,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142586491] [2024-06-27 22:04:57,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:57,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:04:57,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:57,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:04:57,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:04:57,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:57,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 310 transitions, 3806 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:57,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:57,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:57,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:59,495 INFO L124 PetriNetUnfolderBase]: 5470/8491 cut-off events. [2024-06-27 22:04:59,495 INFO L125 PetriNetUnfolderBase]: For 162353/162353 co-relation queries the response was YES. [2024-06-27 22:04:59,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43837 conditions, 8491 events. 5470/8491 cut-off events. For 162353/162353 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 52433 event pairs, 1161 based on Foata normal form. 4/8385 useless extension candidates. Maximal degree in co-relation 43782. Up to 7442 conditions per place. [2024-06-27 22:04:59,583 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 288 selfloop transitions, 69 changer transitions 0/367 dead transitions. [2024-06-27 22:04:59,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 367 transitions, 4827 flow [2024-06-27 22:04:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:59,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:59,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-27 22:04:59,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020833333333333 [2024-06-27 22:04:59,585 INFO L175 Difference]: Start difference. First operand has 181 places, 310 transitions, 3806 flow. Second operand 10 states and 241 transitions. [2024-06-27 22:04:59,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 367 transitions, 4827 flow [2024-06-27 22:04:59,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 367 transitions, 4711 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:59,799 INFO L231 Difference]: Finished difference. Result has 187 places, 316 transitions, 3928 flow [2024-06-27 22:04:59,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3928, PETRI_PLACES=187, PETRI_TRANSITIONS=316} [2024-06-27 22:04:59,799 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-27 22:04:59,799 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 316 transitions, 3928 flow [2024-06-27 22:04:59,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:04:59,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:59,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:59,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:04:59,800 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:59,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1863796656, now seen corresponding path program 3 times [2024-06-27 22:04:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:59,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125835170] [2024-06-27 22:04:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:59,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:01,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:01,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125835170] [2024-06-27 22:05:01,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125835170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:01,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:01,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488455711] [2024-06-27 22:05:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:01,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:01,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:01,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:01,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:01,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:01,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 316 transitions, 3928 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:01,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:01,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:01,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:03,108 INFO L124 PetriNetUnfolderBase]: 5507/8450 cut-off events. [2024-06-27 22:05:03,108 INFO L125 PetriNetUnfolderBase]: For 175605/175608 co-relation queries the response was YES. [2024-06-27 22:05:03,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45323 conditions, 8450 events. 5507/8450 cut-off events. For 175605/175608 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 51477 event pairs, 1128 based on Foata normal form. 6/8378 useless extension candidates. Maximal degree in co-relation 45266. Up to 7355 conditions per place. [2024-06-27 22:05:03,200 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 235 selfloop transitions, 120 changer transitions 0/365 dead transitions. [2024-06-27 22:05:03,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 365 transitions, 4975 flow [2024-06-27 22:05:03,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 22:05:03,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-27 22:05:03,201 INFO L175 Difference]: Start difference. First operand has 187 places, 316 transitions, 3928 flow. Second operand 9 states and 218 transitions. [2024-06-27 22:05:03,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 365 transitions, 4975 flow [2024-06-27 22:05:03,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 365 transitions, 4839 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 22:05:03,458 INFO L231 Difference]: Finished difference. Result has 191 places, 319 transitions, 4104 flow [2024-06-27 22:05:03,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4104, PETRI_PLACES=191, PETRI_TRANSITIONS=319} [2024-06-27 22:05:03,458 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-06-27 22:05:03,458 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 319 transitions, 4104 flow [2024-06-27 22:05:03,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:03,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:03,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:03,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:05:03,459 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:03,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:03,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1041167487, now seen corresponding path program 1 times [2024-06-27 22:05:03,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:03,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053777907] [2024-06-27 22:05:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:03,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:04,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:04,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053777907] [2024-06-27 22:05:04,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053777907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:04,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:04,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:04,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357958331] [2024-06-27 22:05:04,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:04,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:04,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:04,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:04,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:04,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:05:04,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 319 transitions, 4104 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:04,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:04,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:05:04,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:06,075 INFO L124 PetriNetUnfolderBase]: 5232/8616 cut-off events. [2024-06-27 22:05:06,075 INFO L125 PetriNetUnfolderBase]: For 181997/182023 co-relation queries the response was YES. [2024-06-27 22:05:06,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44268 conditions, 8616 events. 5232/8616 cut-off events. For 181997/182023 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 57754 event pairs, 1519 based on Foata normal form. 24/8432 useless extension candidates. Maximal degree in co-relation 44210. Up to 7173 conditions per place. [2024-06-27 22:05:06,146 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 287 selfloop transitions, 44 changer transitions 0/374 dead transitions. [2024-06-27 22:05:06,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 374 transitions, 5462 flow [2024-06-27 22:05:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 22:05:06,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 22:05:06,148 INFO L175 Difference]: Start difference. First operand has 191 places, 319 transitions, 4104 flow. Second operand 6 states and 153 transitions. [2024-06-27 22:05:06,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 374 transitions, 5462 flow [2024-06-27 22:05:06,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 374 transitions, 5067 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 22:05:06,344 INFO L231 Difference]: Finished difference. Result has 191 places, 353 transitions, 4474 flow [2024-06-27 22:05:06,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3761, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4474, PETRI_PLACES=191, PETRI_TRANSITIONS=353} [2024-06-27 22:05:06,345 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-06-27 22:05:06,345 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 353 transitions, 4474 flow [2024-06-27 22:05:06,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:06,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:06,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:06,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:05:06,345 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:06,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:06,346 INFO L85 PathProgramCache]: Analyzing trace with hash 288495536, now seen corresponding path program 4 times [2024-06-27 22:05:06,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:06,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996708333] [2024-06-27 22:05:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:07,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:07,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996708333] [2024-06-27 22:05:07,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996708333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:07,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:07,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:07,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227244428] [2024-06-27 22:05:07,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:07,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:07,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:07,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:07,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:07,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:07,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 353 transitions, 4474 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:07,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:07,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:07,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:09,849 INFO L124 PetriNetUnfolderBase]: 5568/9340 cut-off events. [2024-06-27 22:05:09,849 INFO L125 PetriNetUnfolderBase]: For 196796/196796 co-relation queries the response was YES. [2024-06-27 22:05:09,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48568 conditions, 9340 events. 5568/9340 cut-off events. For 196796/196796 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 63296 event pairs, 1427 based on Foata normal form. 4/9030 useless extension candidates. Maximal degree in co-relation 48507. Up to 7449 conditions per place. [2024-06-27 22:05:09,956 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 239 selfloop transitions, 150 changer transitions 0/399 dead transitions. [2024-06-27 22:05:09,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 399 transitions, 5588 flow [2024-06-27 22:05:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 22:05:09,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-27 22:05:09,957 INFO L175 Difference]: Start difference. First operand has 191 places, 353 transitions, 4474 flow. Second operand 9 states and 215 transitions. [2024-06-27 22:05:09,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 399 transitions, 5588 flow [2024-06-27 22:05:10,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 399 transitions, 5523 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-27 22:05:10,198 INFO L231 Difference]: Finished difference. Result has 199 places, 356 transitions, 4788 flow [2024-06-27 22:05:10,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4409, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4788, PETRI_PLACES=199, PETRI_TRANSITIONS=356} [2024-06-27 22:05:10,199 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-27 22:05:10,199 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 356 transitions, 4788 flow [2024-06-27 22:05:10,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:10,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:10,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:10,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:05:10,199 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:10,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1530432137, now seen corresponding path program 2 times [2024-06-27 22:05:10,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:10,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543476054] [2024-06-27 22:05:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:10,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:11,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:11,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543476054] [2024-06-27 22:05:11,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543476054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:11,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:11,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:11,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507873204] [2024-06-27 22:05:11,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:11,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:11,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:11,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:11,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:11,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:05:11,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 356 transitions, 4788 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:11,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:11,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:05:11,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:12,714 INFO L124 PetriNetUnfolderBase]: 5294/8706 cut-off events. [2024-06-27 22:05:12,714 INFO L125 PetriNetUnfolderBase]: For 204892/204918 co-relation queries the response was YES. [2024-06-27 22:05:12,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47109 conditions, 8706 events. 5294/8706 cut-off events. For 204892/204918 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 58213 event pairs, 1538 based on Foata normal form. 23/8517 useless extension candidates. Maximal degree in co-relation 47046. Up to 7208 conditions per place. [2024-06-27 22:05:12,801 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 283 selfloop transitions, 56 changer transitions 0/383 dead transitions. [2024-06-27 22:05:12,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 383 transitions, 5764 flow [2024-06-27 22:05:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 22:05:12,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:05:12,803 INFO L175 Difference]: Start difference. First operand has 199 places, 356 transitions, 4788 flow. Second operand 6 states and 150 transitions. [2024-06-27 22:05:12,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 383 transitions, 5764 flow [2024-06-27 22:05:13,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 383 transitions, 5262 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 22:05:13,043 INFO L231 Difference]: Finished difference. Result has 197 places, 365 transitions, 4546 flow [2024-06-27 22:05:13,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4286, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4546, PETRI_PLACES=197, PETRI_TRANSITIONS=365} [2024-06-27 22:05:13,043 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-06-27 22:05:13,044 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 365 transitions, 4546 flow [2024-06-27 22:05:13,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:13,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:13,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:13,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:05:13,044 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:13,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash 492702018, now seen corresponding path program 5 times [2024-06-27 22:05:13,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:13,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608209238] [2024-06-27 22:05:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:13,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:14,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608209238] [2024-06-27 22:05:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608209238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:14,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:14,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:14,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367731795] [2024-06-27 22:05:14,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:14,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:14,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:14,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:14,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:14,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 365 transitions, 4546 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:14,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:14,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:14,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:16,134 INFO L124 PetriNetUnfolderBase]: 5808/9403 cut-off events. [2024-06-27 22:05:16,134 INFO L125 PetriNetUnfolderBase]: For 226838/226840 co-relation queries the response was YES. [2024-06-27 22:05:16,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52460 conditions, 9403 events. 5808/9403 cut-off events. For 226838/226840 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 62115 event pairs, 1561 based on Foata normal form. 6/9197 useless extension candidates. Maximal degree in co-relation 52395. Up to 7784 conditions per place. [2024-06-27 22:05:16,231 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 301 selfloop transitions, 142 changer transitions 0/453 dead transitions. [2024-06-27 22:05:16,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 453 transitions, 6128 flow [2024-06-27 22:05:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:05:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:05:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-06-27 22:05:16,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265151515151515 [2024-06-27 22:05:16,233 INFO L175 Difference]: Start difference. First operand has 197 places, 365 transitions, 4546 flow. Second operand 11 states and 278 transitions. [2024-06-27 22:05:16,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 453 transitions, 6128 flow [2024-06-27 22:05:16,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 453 transitions, 6012 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:16,528 INFO L231 Difference]: Finished difference. Result has 207 places, 382 transitions, 5004 flow [2024-06-27 22:05:16,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4450, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5004, PETRI_PLACES=207, PETRI_TRANSITIONS=382} [2024-06-27 22:05:16,529 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 153 predicate places. [2024-06-27 22:05:16,529 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 382 transitions, 5004 flow [2024-06-27 22:05:16,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:16,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:16,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:16,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:05:16,530 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:16,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:16,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1742070136, now seen corresponding path program 6 times [2024-06-27 22:05:16,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:16,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474971883] [2024-06-27 22:05:16,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:16,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:17,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:17,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474971883] [2024-06-27 22:05:17,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474971883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:17,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:17,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:17,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404493740] [2024-06-27 22:05:17,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:17,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:17,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:17,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:17,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:17,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:17,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 382 transitions, 5004 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:17,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:17,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:17,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:19,629 INFO L124 PetriNetUnfolderBase]: 5859/9526 cut-off events. [2024-06-27 22:05:19,629 INFO L125 PetriNetUnfolderBase]: For 241230/241232 co-relation queries the response was YES. [2024-06-27 22:05:19,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54480 conditions, 9526 events. 5859/9526 cut-off events. For 241230/241232 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 63422 event pairs, 1612 based on Foata normal form. 6/9313 useless extension candidates. Maximal degree in co-relation 54412. Up to 8024 conditions per place. [2024-06-27 22:05:19,734 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 314 selfloop transitions, 131 changer transitions 0/455 dead transitions. [2024-06-27 22:05:19,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 455 transitions, 6344 flow [2024-06-27 22:05:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:05:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:05:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-06-27 22:05:19,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-27 22:05:19,736 INFO L175 Difference]: Start difference. First operand has 207 places, 382 transitions, 5004 flow. Second operand 11 states and 272 transitions. [2024-06-27 22:05:19,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 455 transitions, 6344 flow [2024-06-27 22:05:20,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 455 transitions, 6096 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:20,039 INFO L231 Difference]: Finished difference. Result has 211 places, 388 transitions, 5150 flow [2024-06-27 22:05:20,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4774, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5150, PETRI_PLACES=211, PETRI_TRANSITIONS=388} [2024-06-27 22:05:20,040 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 157 predicate places. [2024-06-27 22:05:20,040 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 388 transitions, 5150 flow [2024-06-27 22:05:20,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:20,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:20,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:20,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:05:20,041 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:20,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:20,041 INFO L85 PathProgramCache]: Analyzing trace with hash -810423964, now seen corresponding path program 7 times [2024-06-27 22:05:20,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:20,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345889710] [2024-06-27 22:05:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:20,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:20,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:20,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345889710] [2024-06-27 22:05:20,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345889710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:20,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:20,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:20,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769271825] [2024-06-27 22:05:20,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:20,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:20,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:20,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:20,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:05:20,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 388 transitions, 5150 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:20,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:20,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:05:20,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:22,647 INFO L124 PetriNetUnfolderBase]: 4872/8666 cut-off events. [2024-06-27 22:05:22,647 INFO L125 PetriNetUnfolderBase]: For 220834/221039 co-relation queries the response was YES. [2024-06-27 22:05:22,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48218 conditions, 8666 events. 4872/8666 cut-off events. For 220834/221039 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 63194 event pairs, 1013 based on Foata normal form. 130/8508 useless extension candidates. Maximal degree in co-relation 48148. Up to 5909 conditions per place. [2024-06-27 22:05:22,739 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 232 selfloop transitions, 139 changer transitions 0/480 dead transitions. [2024-06-27 22:05:22,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 480 transitions, 6811 flow [2024-06-27 22:05:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 275 transitions. [2024-06-27 22:05:22,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-27 22:05:22,741 INFO L175 Difference]: Start difference. First operand has 211 places, 388 transitions, 5150 flow. Second operand 10 states and 275 transitions. [2024-06-27 22:05:22,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 480 transitions, 6811 flow [2024-06-27 22:05:23,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 480 transitions, 6525 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 22:05:23,070 INFO L231 Difference]: Finished difference. Result has 214 places, 408 transitions, 5542 flow [2024-06-27 22:05:23,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4864, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5542, PETRI_PLACES=214, PETRI_TRANSITIONS=408} [2024-06-27 22:05:23,070 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2024-06-27 22:05:23,070 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 408 transitions, 5542 flow [2024-06-27 22:05:23,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:23,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:23,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:23,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:05:23,071 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:23,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash 809377294, now seen corresponding path program 8 times [2024-06-27 22:05:23,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:23,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090228977] [2024-06-27 22:05:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:23,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:24,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:24,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090228977] [2024-06-27 22:05:24,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090228977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:24,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:24,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:24,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357346579] [2024-06-27 22:05:24,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:24,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:24,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:24,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 408 transitions, 5542 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:24,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:24,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:24,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:26,447 INFO L124 PetriNetUnfolderBase]: 6529/10486 cut-off events. [2024-06-27 22:05:26,447 INFO L125 PetriNetUnfolderBase]: For 286529/286531 co-relation queries the response was YES. [2024-06-27 22:05:26,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63344 conditions, 10486 events. 6529/10486 cut-off events. For 286529/286531 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 69689 event pairs, 1666 based on Foata normal form. 8/10278 useless extension candidates. Maximal degree in co-relation 63271. Up to 8709 conditions per place. [2024-06-27 22:05:26,563 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 380 selfloop transitions, 148 changer transitions 0/538 dead transitions. [2024-06-27 22:05:26,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 538 transitions, 8102 flow [2024-06-27 22:05:26,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:26,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 22:05:26,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-06-27 22:05:26,564 INFO L175 Difference]: Start difference. First operand has 214 places, 408 transitions, 5542 flow. Second operand 10 states and 254 transitions. [2024-06-27 22:05:26,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 538 transitions, 8102 flow [2024-06-27 22:05:27,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 538 transitions, 7912 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:27,053 INFO L231 Difference]: Finished difference. Result has 222 places, 475 transitions, 6896 flow [2024-06-27 22:05:27,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5429, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6896, PETRI_PLACES=222, PETRI_TRANSITIONS=475} [2024-06-27 22:05:27,054 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2024-06-27 22:05:27,054 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 475 transitions, 6896 flow [2024-06-27 22:05:27,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:27,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:27,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:27,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:05:27,055 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:27,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:27,055 INFO L85 PathProgramCache]: Analyzing trace with hash 809495404, now seen corresponding path program 9 times [2024-06-27 22:05:27,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:27,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176130974] [2024-06-27 22:05:27,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:27,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:28,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:28,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176130974] [2024-06-27 22:05:28,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176130974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:28,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:28,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:28,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618628456] [2024-06-27 22:05:28,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:28,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:28,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:28,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:28,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:28,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 475 transitions, 6896 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:28,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:28,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:28,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:30,680 INFO L124 PetriNetUnfolderBase]: 6511/10512 cut-off events. [2024-06-27 22:05:30,680 INFO L125 PetriNetUnfolderBase]: For 282863/282865 co-relation queries the response was YES. [2024-06-27 22:05:30,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64060 conditions, 10512 events. 6511/10512 cut-off events. For 282863/282865 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 70394 event pairs, 1741 based on Foata normal form. 10/10288 useless extension candidates. Maximal degree in co-relation 63984. Up to 8975 conditions per place. [2024-06-27 22:05:30,810 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 402 selfloop transitions, 114 changer transitions 0/526 dead transitions. [2024-06-27 22:05:30,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 526 transitions, 8223 flow [2024-06-27 22:05:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:30,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 22:05:30,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-27 22:05:30,812 INFO L175 Difference]: Start difference. First operand has 222 places, 475 transitions, 6896 flow. Second operand 9 states and 226 transitions. [2024-06-27 22:05:30,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 526 transitions, 8223 flow [2024-06-27 22:05:31,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 526 transitions, 7839 flow, removed 163 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:31,495 INFO L231 Difference]: Finished difference. Result has 227 places, 477 transitions, 6819 flow [2024-06-27 22:05:31,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6530, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6819, PETRI_PLACES=227, PETRI_TRANSITIONS=477} [2024-06-27 22:05:31,496 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-06-27 22:05:31,496 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 477 transitions, 6819 flow [2024-06-27 22:05:31,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:31,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:31,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:31,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:05:31,497 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:31,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:31,497 INFO L85 PathProgramCache]: Analyzing trace with hash 924786574, now seen corresponding path program 10 times [2024-06-27 22:05:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:31,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961742566] [2024-06-27 22:05:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:31,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:32,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:32,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961742566] [2024-06-27 22:05:32,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961742566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:32,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:32,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:32,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086725924] [2024-06-27 22:05:32,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:32,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:32,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:32,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:32,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:32,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 477 transitions, 6819 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:32,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:32,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:32,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:34,967 INFO L124 PetriNetUnfolderBase]: 6542/10424 cut-off events. [2024-06-27 22:05:34,967 INFO L125 PetriNetUnfolderBase]: For 276600/276603 co-relation queries the response was YES. [2024-06-27 22:05:35,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63540 conditions, 10424 events. 6542/10424 cut-off events. For 276600/276603 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 68401 event pairs, 1600 based on Foata normal form. 6/10237 useless extension candidates. Maximal degree in co-relation 63462. Up to 8847 conditions per place. [2024-06-27 22:05:35,085 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 359 selfloop transitions, 168 changer transitions 0/537 dead transitions. [2024-06-27 22:05:35,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 537 transitions, 8341 flow [2024-06-27 22:05:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 22:05:35,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-27 22:05:35,087 INFO L175 Difference]: Start difference. First operand has 227 places, 477 transitions, 6819 flow. Second operand 9 states and 229 transitions. [2024-06-27 22:05:35,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 537 transitions, 8341 flow [2024-06-27 22:05:35,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 537 transitions, 8125 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:35,583 INFO L231 Difference]: Finished difference. Result has 229 places, 483 transitions, 7053 flow [2024-06-27 22:05:35,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6603, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7053, PETRI_PLACES=229, PETRI_TRANSITIONS=483} [2024-06-27 22:05:35,583 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-27 22:05:35,583 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 483 transitions, 7053 flow [2024-06-27 22:05:35,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:05:35,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:35,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:35,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:05:35,584 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:35,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash -120092987, now seen corresponding path program 3 times [2024-06-27 22:05:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:35,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450542694] [2024-06-27 22:05:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:35,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:36,435 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 22:05:36,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:36,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450542694] [2024-06-27 22:05:36,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450542694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:36,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:36,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:36,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932627592] [2024-06-27 22:05:36,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:36,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:36,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:36,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:36,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:36,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:05:36,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 483 transitions, 7053 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:36,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:36,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:05:36,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:38,261 INFO L124 PetriNetUnfolderBase]: 5774/9521 cut-off events. [2024-06-27 22:05:38,261 INFO L125 PetriNetUnfolderBase]: For 277749/277928 co-relation queries the response was YES. [2024-06-27 22:05:38,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57644 conditions, 9521 events. 5774/9521 cut-off events. For 277749/277928 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 65555 event pairs, 1671 based on Foata normal form. 57/9279 useless extension candidates. Maximal degree in co-relation 57565. Up to 7731 conditions per place. [2024-06-27 22:05:38,369 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 362 selfloop transitions, 55 changer transitions 0/516 dead transitions. [2024-06-27 22:05:38,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 516 transitions, 8119 flow [2024-06-27 22:05:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-27 22:05:38,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-27 22:05:38,371 INFO L175 Difference]: Start difference. First operand has 229 places, 483 transitions, 7053 flow. Second operand 6 states and 164 transitions. [2024-06-27 22:05:38,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 516 transitions, 8119 flow [2024-06-27 22:05:38,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 516 transitions, 7703 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:38,836 INFO L231 Difference]: Finished difference. Result has 228 places, 492 transitions, 6887 flow [2024-06-27 22:05:38,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6637, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6887, PETRI_PLACES=228, PETRI_TRANSITIONS=492} [2024-06-27 22:05:38,836 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-27 22:05:38,836 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 492 transitions, 6887 flow [2024-06-27 22:05:38,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:38,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:38,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:38,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:05:38,837 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:38,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:38,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1234035461, now seen corresponding path program 1 times [2024-06-27 22:05:38,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:38,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578236985] [2024-06-27 22:05:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:38,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:39,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:39,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578236985] [2024-06-27 22:05:39,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578236985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:39,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:39,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:39,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917058763] [2024-06-27 22:05:39,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:39,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:39,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:39,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:39,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:39,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:05:39,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 492 transitions, 6887 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:39,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:39,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:05:39,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:41,654 INFO L124 PetriNetUnfolderBase]: 6273/10294 cut-off events. [2024-06-27 22:05:41,654 INFO L125 PetriNetUnfolderBase]: For 292427/292427 co-relation queries the response was YES. [2024-06-27 22:05:41,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63444 conditions, 10294 events. 6273/10294 cut-off events. For 292427/292427 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 70408 event pairs, 1865 based on Foata normal form. 1/10057 useless extension candidates. Maximal degree in co-relation 63364. Up to 8873 conditions per place. [2024-06-27 22:05:41,762 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 489 selfloop transitions, 16 changer transitions 0/517 dead transitions. [2024-06-27 22:05:41,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 517 transitions, 8157 flow [2024-06-27 22:05:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 22:05:41,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 22:05:41,764 INFO L175 Difference]: Start difference. First operand has 228 places, 492 transitions, 6887 flow. Second operand 6 states and 146 transitions. [2024-06-27 22:05:41,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 517 transitions, 8157 flow [2024-06-27 22:05:42,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 517 transitions, 8053 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 22:05:42,192 INFO L231 Difference]: Finished difference. Result has 232 places, 500 transitions, 6993 flow [2024-06-27 22:05:42,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6783, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6993, PETRI_PLACES=232, PETRI_TRANSITIONS=500} [2024-06-27 22:05:42,193 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 178 predicate places. [2024-06-27 22:05:42,193 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 500 transitions, 6993 flow [2024-06-27 22:05:42,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:42,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:42,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:42,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:05:42,194 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:42,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:42,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1240731461, now seen corresponding path program 2 times [2024-06-27 22:05:42,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:42,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524692204] [2024-06-27 22:05:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:42,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:43,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:43,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524692204] [2024-06-27 22:05:43,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524692204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:43,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:43,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:43,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758470161] [2024-06-27 22:05:43,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:43,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:43,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:43,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:43,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:05:43,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 500 transitions, 6993 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:43,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:43,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:05:43,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:45,164 INFO L124 PetriNetUnfolderBase]: 6270/10292 cut-off events. [2024-06-27 22:05:45,165 INFO L125 PetriNetUnfolderBase]: For 305246/305252 co-relation queries the response was YES. [2024-06-27 22:05:45,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64255 conditions, 10292 events. 6270/10292 cut-off events. For 305246/305252 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 70459 event pairs, 1871 based on Foata normal form. 5/10058 useless extension candidates. Maximal degree in co-relation 64174. Up to 8855 conditions per place. [2024-06-27 22:05:45,290 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 483 selfloop transitions, 23 changer transitions 0/518 dead transitions. [2024-06-27 22:05:45,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 518 transitions, 8173 flow [2024-06-27 22:05:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 22:05:45,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 22:05:45,292 INFO L175 Difference]: Start difference. First operand has 232 places, 500 transitions, 6993 flow. Second operand 6 states and 145 transitions. [2024-06-27 22:05:45,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 518 transitions, 8173 flow [2024-06-27 22:05:45,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 518 transitions, 8081 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:45,837 INFO L231 Difference]: Finished difference. Result has 236 places, 504 transitions, 7042 flow [2024-06-27 22:05:45,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6901, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7042, PETRI_PLACES=236, PETRI_TRANSITIONS=504} [2024-06-27 22:05:45,837 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 182 predicate places. [2024-06-27 22:05:45,837 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 504 transitions, 7042 flow [2024-06-27 22:05:45,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:45,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:45,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:45,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:05:45,838 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:45,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1530416265, now seen corresponding path program 1 times [2024-06-27 22:05:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345920156] [2024-06-27 22:05:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:47,734 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 22:05:47,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:47,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345920156] [2024-06-27 22:05:47,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345920156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:47,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:47,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:47,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100022853] [2024-06-27 22:05:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:47,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:47,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:47,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:47,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:47,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:05:47,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 504 transitions, 7042 flow. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:47,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:47,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:05:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:49,613 INFO L124 PetriNetUnfolderBase]: 5797/9599 cut-off events. [2024-06-27 22:05:49,614 INFO L125 PetriNetUnfolderBase]: For 309093/309291 co-relation queries the response was YES. [2024-06-27 22:05:49,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59739 conditions, 9599 events. 5797/9599 cut-off events. For 309093/309291 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 66536 event pairs, 1844 based on Foata normal form. 45/9316 useless extension candidates. Maximal degree in co-relation 59656. Up to 7802 conditions per place. [2024-06-27 22:05:49,738 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 409 selfloop transitions, 18 changer transitions 0/529 dead transitions. [2024-06-27 22:05:49,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 529 transitions, 8108 flow [2024-06-27 22:05:49,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:49,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 22:05:49,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 22:05:49,740 INFO L175 Difference]: Start difference. First operand has 236 places, 504 transitions, 7042 flow. Second operand 8 states and 188 transitions. [2024-06-27 22:05:49,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 529 transitions, 8108 flow [2024-06-27 22:05:50,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 529 transitions, 7995 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:50,364 INFO L231 Difference]: Finished difference. Result has 240 places, 507 transitions, 7015 flow [2024-06-27 22:05:50,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6929, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7015, PETRI_PLACES=240, PETRI_TRANSITIONS=507} [2024-06-27 22:05:50,364 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-27 22:05:50,364 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 507 transitions, 7015 flow [2024-06-27 22:05:50,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:50,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:50,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:50,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:05:50,365 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:50,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1630755328, now seen corresponding path program 1 times [2024-06-27 22:05:50,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:50,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217092297] [2024-06-27 22:05:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:50,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:51,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217092297] [2024-06-27 22:05:51,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217092297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:51,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:51,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:51,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091296273] [2024-06-27 22:05:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:51,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:51,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:51,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:52,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:52,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 507 transitions, 7015 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:52,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:52,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:52,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:54,385 INFO L124 PetriNetUnfolderBase]: 6642/10901 cut-off events. [2024-06-27 22:05:54,385 INFO L125 PetriNetUnfolderBase]: For 340578/340578 co-relation queries the response was YES. [2024-06-27 22:05:54,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68762 conditions, 10901 events. 6642/10901 cut-off events. For 340578/340578 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 74070 event pairs, 1609 based on Foata normal form. 4/10621 useless extension candidates. Maximal degree in co-relation 68678. Up to 9179 conditions per place. [2024-06-27 22:05:54,530 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 459 selfloop transitions, 105 changer transitions 0/574 dead transitions. [2024-06-27 22:05:54,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 574 transitions, 8663 flow [2024-06-27 22:05:54,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:54,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-27 22:05:54,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979166666666667 [2024-06-27 22:05:54,532 INFO L175 Difference]: Start difference. First operand has 240 places, 507 transitions, 7015 flow. Second operand 10 states and 239 transitions. [2024-06-27 22:05:54,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 574 transitions, 8663 flow [2024-06-27 22:05:55,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 574 transitions, 8605 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 22:05:55,219 INFO L231 Difference]: Finished difference. Result has 245 places, 524 transitions, 7462 flow [2024-06-27 22:05:55,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6957, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7462, PETRI_PLACES=245, PETRI_TRANSITIONS=524} [2024-06-27 22:05:55,220 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 191 predicate places. [2024-06-27 22:05:55,220 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 524 transitions, 7462 flow [2024-06-27 22:05:55,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:55,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:55,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:55,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:05:55,221 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:55,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:55,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1630903198, now seen corresponding path program 2 times [2024-06-27 22:05:55,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:55,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752477813] [2024-06-27 22:05:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:55,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:56,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752477813] [2024-06-27 22:05:56,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752477813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:56,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:56,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:56,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939199540] [2024-06-27 22:05:56,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:56,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:56,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:56,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:57,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:57,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 524 transitions, 7462 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:57,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:57,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:57,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:59,364 INFO L124 PetriNetUnfolderBase]: 6679/10955 cut-off events. [2024-06-27 22:05:59,364 INFO L125 PetriNetUnfolderBase]: For 359213/359213 co-relation queries the response was YES. [2024-06-27 22:05:59,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70672 conditions, 10955 events. 6679/10955 cut-off events. For 359213/359213 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 74468 event pairs, 1595 based on Foata normal form. 4/10666 useless extension candidates. Maximal degree in co-relation 70586. Up to 8996 conditions per place. [2024-06-27 22:05:59,513 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 447 selfloop transitions, 124 changer transitions 0/581 dead transitions. [2024-06-27 22:05:59,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 581 transitions, 9014 flow [2024-06-27 22:05:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-27 22:05:59,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020833333333333 [2024-06-27 22:05:59,514 INFO L175 Difference]: Start difference. First operand has 245 places, 524 transitions, 7462 flow. Second operand 10 states and 241 transitions. [2024-06-27 22:05:59,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 581 transitions, 9014 flow [2024-06-27 22:06:00,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 581 transitions, 8814 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:00,148 INFO L231 Difference]: Finished difference. Result has 249 places, 527 transitions, 7609 flow [2024-06-27 22:06:00,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7262, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7609, PETRI_PLACES=249, PETRI_TRANSITIONS=527} [2024-06-27 22:06:00,149 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-06-27 22:06:00,149 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 527 transitions, 7609 flow [2024-06-27 22:06:00,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:00,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:00,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:00,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:06:00,150 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:00,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1719468958, now seen corresponding path program 3 times [2024-06-27 22:06:00,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:00,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391357217] [2024-06-27 22:06:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:00,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:01,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:01,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391357217] [2024-06-27 22:06:01,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391357217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:01,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:01,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:01,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069836378] [2024-06-27 22:06:01,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:01,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:01,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:01,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:01,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 527 transitions, 7609 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:01,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:01,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:01,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:04,401 INFO L124 PetriNetUnfolderBase]: 6716/10993 cut-off events. [2024-06-27 22:06:04,401 INFO L125 PetriNetUnfolderBase]: For 376633/376633 co-relation queries the response was YES. [2024-06-27 22:06:04,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72363 conditions, 10993 events. 6716/10993 cut-off events. For 376633/376633 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 74602 event pairs, 1530 based on Foata normal form. 4/10711 useless extension candidates. Maximal degree in co-relation 72275. Up to 8666 conditions per place. [2024-06-27 22:06:04,561 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 431 selfloop transitions, 155 changer transitions 0/596 dead transitions. [2024-06-27 22:06:04,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 596 transitions, 9279 flow [2024-06-27 22:06:04,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 267 transitions. [2024-06-27 22:06:04,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2024-06-27 22:06:04,562 INFO L175 Difference]: Start difference. First operand has 249 places, 527 transitions, 7609 flow. Second operand 11 states and 267 transitions. [2024-06-27 22:06:04,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 596 transitions, 9279 flow [2024-06-27 22:06:05,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 596 transitions, 8970 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 22:06:05,302 INFO L231 Difference]: Finished difference. Result has 252 places, 530 transitions, 7715 flow [2024-06-27 22:06:05,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7300, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7715, PETRI_PLACES=252, PETRI_TRANSITIONS=530} [2024-06-27 22:06:05,303 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-27 22:06:05,303 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 530 transitions, 7715 flow [2024-06-27 22:06:05,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:05,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:05,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:05,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:06:05,303 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:05,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:05,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1948633322, now seen corresponding path program 4 times [2024-06-27 22:06:05,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:05,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808458659] [2024-06-27 22:06:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:05,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:06,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:06,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808458659] [2024-06-27 22:06:06,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808458659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:06,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:06,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589976166] [2024-06-27 22:06:06,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:06,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:06,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:06,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:06,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:06,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 530 transitions, 7715 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:06,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:06,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:06,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:09,521 INFO L124 PetriNetUnfolderBase]: 6883/11171 cut-off events. [2024-06-27 22:06:09,521 INFO L125 PetriNetUnfolderBase]: For 417837/417843 co-relation queries the response was YES. [2024-06-27 22:06:09,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75755 conditions, 11171 events. 6883/11171 cut-off events. For 417837/417843 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 75362 event pairs, 1435 based on Foata normal form. 21/10911 useless extension candidates. Maximal degree in co-relation 75666. Up to 8129 conditions per place. [2024-06-27 22:06:09,685 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 345 selfloop transitions, 245 changer transitions 0/600 dead transitions. [2024-06-27 22:06:09,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 600 transitions, 9621 flow [2024-06-27 22:06:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 22:06:09,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 22:06:09,686 INFO L175 Difference]: Start difference. First operand has 252 places, 530 transitions, 7715 flow. Second operand 10 states and 252 transitions. [2024-06-27 22:06:09,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 600 transitions, 9621 flow [2024-06-27 22:06:10,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 600 transitions, 9244 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:10,693 INFO L231 Difference]: Finished difference. Result has 253 places, 533 transitions, 7937 flow [2024-06-27 22:06:10,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7338, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7937, PETRI_PLACES=253, PETRI_TRANSITIONS=533} [2024-06-27 22:06:10,694 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 199 predicate places. [2024-06-27 22:06:10,694 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 533 transitions, 7937 flow [2024-06-27 22:06:10,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:10,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:10,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:10,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:06:10,695 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:10,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1733823326, now seen corresponding path program 5 times [2024-06-27 22:06:10,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:10,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210128511] [2024-06-27 22:06:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:10,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:12,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210128511] [2024-06-27 22:06:12,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210128511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:12,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:12,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908245305] [2024-06-27 22:06:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:12,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:12,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:12,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 533 transitions, 7937 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:12,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:12,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:12,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:15,241 INFO L124 PetriNetUnfolderBase]: 7050/11452 cut-off events. [2024-06-27 22:06:15,241 INFO L125 PetriNetUnfolderBase]: For 456751/456757 co-relation queries the response was YES. [2024-06-27 22:06:15,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79950 conditions, 11452 events. 7050/11452 cut-off events. For 456751/456757 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 77583 event pairs, 1464 based on Foata normal form. 21/11180 useless extension candidates. Maximal degree in co-relation 79860. Up to 8386 conditions per place. [2024-06-27 22:06:15,373 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 361 selfloop transitions, 233 changer transitions 0/604 dead transitions. [2024-06-27 22:06:15,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 604 transitions, 9887 flow [2024-06-27 22:06:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 22:06:15,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-06-27 22:06:15,374 INFO L175 Difference]: Start difference. First operand has 253 places, 533 transitions, 7937 flow. Second operand 10 states and 254 transitions. [2024-06-27 22:06:15,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 604 transitions, 9887 flow [2024-06-27 22:06:16,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 604 transitions, 9310 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:16,152 INFO L231 Difference]: Finished difference. Result has 254 places, 536 transitions, 7941 flow [2024-06-27 22:06:16,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7360, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7941, PETRI_PLACES=254, PETRI_TRANSITIONS=536} [2024-06-27 22:06:16,152 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-27 22:06:16,153 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 536 transitions, 7941 flow [2024-06-27 22:06:16,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:16,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:16,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:16,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:06:16,153 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:16,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:16,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1733971196, now seen corresponding path program 6 times [2024-06-27 22:06:16,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:16,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515505924] [2024-06-27 22:06:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:16,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:17,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:17,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515505924] [2024-06-27 22:06:17,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515505924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:17,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:17,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:17,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459864301] [2024-06-27 22:06:17,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:17,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:17,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:17,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:17,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:17,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:17,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 536 transitions, 7941 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:17,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:17,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:17,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:20,463 INFO L124 PetriNetUnfolderBase]: 7087/11452 cut-off events. [2024-06-27 22:06:20,463 INFO L125 PetriNetUnfolderBase]: For 447279/447285 co-relation queries the response was YES. [2024-06-27 22:06:20,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80375 conditions, 11452 events. 7087/11452 cut-off events. For 447279/447285 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 77064 event pairs, 1424 based on Foata normal form. 5/11178 useless extension candidates. Maximal degree in co-relation 80284. Up to 8085 conditions per place. [2024-06-27 22:06:20,605 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 353 selfloop transitions, 242 changer transitions 0/605 dead transitions. [2024-06-27 22:06:20,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 605 transitions, 9853 flow [2024-06-27 22:06:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 22:06:20,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-06-27 22:06:20,607 INFO L175 Difference]: Start difference. First operand has 254 places, 536 transitions, 7941 flow. Second operand 10 states and 254 transitions. [2024-06-27 22:06:20,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 605 transitions, 9853 flow [2024-06-27 22:06:21,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 605 transitions, 9244 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:21,488 INFO L231 Difference]: Finished difference. Result has 255 places, 539 transitions, 7933 flow [2024-06-27 22:06:21,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7332, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7933, PETRI_PLACES=255, PETRI_TRANSITIONS=539} [2024-06-27 22:06:21,489 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 201 predicate places. [2024-06-27 22:06:21,489 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 539 transitions, 7933 flow [2024-06-27 22:06:21,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:21,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:21,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:21,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:06:21,489 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:21,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:21,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1728245465, now seen corresponding path program 1 times [2024-06-27 22:06:21,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:21,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80732904] [2024-06-27 22:06:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:21,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:23,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:23,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80732904] [2024-06-27 22:06:23,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80732904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:23,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:23,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:23,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196459660] [2024-06-27 22:06:23,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:23,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:23,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:23,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:23,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:23,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:23,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 539 transitions, 7933 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:23,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:23,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:23,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:25,787 INFO L124 PetriNetUnfolderBase]: 7124/11584 cut-off events. [2024-06-27 22:06:25,787 INFO L125 PetriNetUnfolderBase]: For 457118/457127 co-relation queries the response was YES. [2024-06-27 22:06:25,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80906 conditions, 11584 events. 7124/11584 cut-off events. For 457118/457127 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 78799 event pairs, 1588 based on Foata normal form. 7/11336 useless extension candidates. Maximal degree in co-relation 80814. Up to 9741 conditions per place. [2024-06-27 22:06:25,953 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 518 selfloop transitions, 79 changer transitions 0/607 dead transitions. [2024-06-27 22:06:25,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 607 transitions, 9861 flow [2024-06-27 22:06:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 22:06:25,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-27 22:06:25,955 INFO L175 Difference]: Start difference. First operand has 255 places, 539 transitions, 7933 flow. Second operand 9 states and 229 transitions. [2024-06-27 22:06:25,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 607 transitions, 9861 flow [2024-06-27 22:06:26,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 607 transitions, 9274 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 22:06:26,987 INFO L231 Difference]: Finished difference. Result has 257 places, 548 transitions, 7674 flow [2024-06-27 22:06:26,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7358, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7674, PETRI_PLACES=257, PETRI_TRANSITIONS=548} [2024-06-27 22:06:26,988 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 203 predicate places. [2024-06-27 22:06:26,988 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 548 transitions, 7674 flow [2024-06-27 22:06:26,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:26,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:26,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:26,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:06:26,989 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:26,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash -863056495, now seen corresponding path program 1 times [2024-06-27 22:06:26,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:26,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902984459] [2024-06-27 22:06:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:28,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:28,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902984459] [2024-06-27 22:06:28,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902984459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:28,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:28,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:28,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657493961] [2024-06-27 22:06:28,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:28,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:28,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:28,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:28,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:28,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:06:28,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 548 transitions, 7674 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:28,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:28,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:06:28,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:30,757 INFO L124 PetriNetUnfolderBase]: 6394/10791 cut-off events. [2024-06-27 22:06:30,757 INFO L125 PetriNetUnfolderBase]: For 444821/445013 co-relation queries the response was YES. [2024-06-27 22:06:30,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73392 conditions, 10791 events. 6394/10791 cut-off events. For 444821/445013 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 76988 event pairs, 1558 based on Foata normal form. 31/10451 useless extension candidates. Maximal degree in co-relation 73298. Up to 8553 conditions per place. [2024-06-27 22:06:30,882 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 416 selfloop transitions, 60 changer transitions 0/582 dead transitions. [2024-06-27 22:06:30,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 582 transitions, 9070 flow [2024-06-27 22:06:30,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 22:06:30,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-27 22:06:30,883 INFO L175 Difference]: Start difference. First operand has 257 places, 548 transitions, 7674 flow. Second operand 7 states and 177 transitions. [2024-06-27 22:06:30,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 582 transitions, 9070 flow [2024-06-27 22:06:31,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 582 transitions, 8881 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:31,640 INFO L231 Difference]: Finished difference. Result has 259 places, 560 transitions, 7863 flow [2024-06-27 22:06:31,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7485, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7863, PETRI_PLACES=259, PETRI_TRANSITIONS=560} [2024-06-27 22:06:31,641 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 205 predicate places. [2024-06-27 22:06:31,641 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 560 transitions, 7863 flow [2024-06-27 22:06:31,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:31,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:31,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:31,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:06:31,641 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:31,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:31,641 INFO L85 PathProgramCache]: Analyzing trace with hash -863056929, now seen corresponding path program 1 times [2024-06-27 22:06:31,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:31,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878870119] [2024-06-27 22:06:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:31,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:32,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:32,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878870119] [2024-06-27 22:06:32,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878870119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:32,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:32,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:32,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864988871] [2024-06-27 22:06:32,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:32,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:32,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:32,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:32,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:32,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:32,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 560 transitions, 7863 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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 22:06:32,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:32,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:32,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:35,355 INFO L124 PetriNetUnfolderBase]: 6745/11239 cut-off events. [2024-06-27 22:06:35,356 INFO L125 PetriNetUnfolderBase]: For 464101/464119 co-relation queries the response was YES. [2024-06-27 22:06:35,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77336 conditions, 11239 events. 6745/11239 cut-off events. For 464101/464119 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 79007 event pairs, 1605 based on Foata normal form. 15/10941 useless extension candidates. Maximal degree in co-relation 77240. Up to 9182 conditions per place. [2024-06-27 22:06:35,509 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 447 selfloop transitions, 57 changer transitions 0/584 dead transitions. [2024-06-27 22:06:35,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 584 transitions, 9053 flow [2024-06-27 22:06:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:35,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:06:35,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 22:06:35,510 INFO L175 Difference]: Start difference. First operand has 259 places, 560 transitions, 7863 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:06:35,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 584 transitions, 9053 flow [2024-06-27 22:06:36,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 584 transitions, 8874 flow, removed 66 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:36,361 INFO L231 Difference]: Finished difference. Result has 263 places, 560 transitions, 7809 flow [2024-06-27 22:06:36,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7684, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7809, PETRI_PLACES=263, PETRI_TRANSITIONS=560} [2024-06-27 22:06:36,361 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 209 predicate places. [2024-06-27 22:06:36,362 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 560 transitions, 7809 flow [2024-06-27 22:06:36,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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 22:06:36,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:36,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:36,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:06:36,362 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:36,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:36,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1789968506, now seen corresponding path program 7 times [2024-06-27 22:06:36,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:36,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677723528] [2024-06-27 22:06:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:36,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:37,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:37,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677723528] [2024-06-27 22:06:37,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677723528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:37,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:37,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:37,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987727685] [2024-06-27 22:06:37,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:37,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:37,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:37,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:37,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:38,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:38,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 560 transitions, 7809 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:38,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:38,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:38,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:40,997 INFO L124 PetriNetUnfolderBase]: 7339/11610 cut-off events. [2024-06-27 22:06:40,997 INFO L125 PetriNetUnfolderBase]: For 526922/526922 co-relation queries the response was YES. [2024-06-27 22:06:41,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84469 conditions, 11610 events. 7339/11610 cut-off events. For 526922/526922 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 77066 event pairs, 1241 based on Foata normal form. 20/11431 useless extension candidates. Maximal degree in co-relation 84371. Up to 8838 conditions per place. [2024-06-27 22:06:41,183 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 373 selfloop transitions, 243 changer transitions 0/626 dead transitions. [2024-06-27 22:06:41,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 626 transitions, 9799 flow [2024-06-27 22:06:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 22:06:41,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-27 22:06:41,184 INFO L175 Difference]: Start difference. First operand has 263 places, 560 transitions, 7809 flow. Second operand 10 states and 249 transitions. [2024-06-27 22:06:41,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 626 transitions, 9799 flow [2024-06-27 22:06:42,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 626 transitions, 9644 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:42,114 INFO L231 Difference]: Finished difference. Result has 267 places, 563 transitions, 8271 flow [2024-06-27 22:06:42,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7654, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8271, PETRI_PLACES=267, PETRI_TRANSITIONS=563} [2024-06-27 22:06:42,114 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 213 predicate places. [2024-06-27 22:06:42,114 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 563 transitions, 8271 flow [2024-06-27 22:06:42,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:42,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:42,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:42,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:06:42,115 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:42,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:42,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1790116376, now seen corresponding path program 8 times [2024-06-27 22:06:42,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:42,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138712789] [2024-06-27 22:06:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:42,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:43,623 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 22:06:43,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:43,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138712789] [2024-06-27 22:06:43,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138712789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:43,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:43,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:43,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512241081] [2024-06-27 22:06:43,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:43,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:43,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:43,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:43,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:43,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:43,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 563 transitions, 8271 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:43,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:43,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:43,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:46,573 INFO L124 PetriNetUnfolderBase]: 7579/11953 cut-off events. [2024-06-27 22:06:46,573 INFO L125 PetriNetUnfolderBase]: For 590781/590781 co-relation queries the response was YES. [2024-06-27 22:06:46,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91915 conditions, 11953 events. 7579/11953 cut-off events. For 590781/590781 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 79530 event pairs, 1274 based on Foata normal form. 4/11765 useless extension candidates. Maximal degree in co-relation 91816. Up to 8819 conditions per place. [2024-06-27 22:06:46,735 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 372 selfloop transitions, 250 changer transitions 0/632 dead transitions. [2024-06-27 22:06:46,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 632 transitions, 10545 flow [2024-06-27 22:06:46,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 22:06:46,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229166666666667 [2024-06-27 22:06:46,736 INFO L175 Difference]: Start difference. First operand has 267 places, 563 transitions, 8271 flow. Second operand 10 states and 251 transitions. [2024-06-27 22:06:46,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 632 transitions, 10545 flow [2024-06-27 22:06:47,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 632 transitions, 9964 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 22:06:47,908 INFO L231 Difference]: Finished difference. Result has 270 places, 569 transitions, 8471 flow [2024-06-27 22:06:47,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7690, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8471, PETRI_PLACES=270, PETRI_TRANSITIONS=569} [2024-06-27 22:06:47,909 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 216 predicate places. [2024-06-27 22:06:47,909 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 569 transitions, 8471 flow [2024-06-27 22:06:47,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:47,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:47,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:47,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:06:47,909 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:47,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:47,910 INFO L85 PathProgramCache]: Analyzing trace with hash 985362228, now seen corresponding path program 9 times [2024-06-27 22:06:47,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:47,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927591508] [2024-06-27 22:06:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:47,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:49,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:49,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927591508] [2024-06-27 22:06:49,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927591508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:49,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:49,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362383674] [2024-06-27 22:06:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:49,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:49,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:49,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:49,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 569 transitions, 8471 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:49,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:49,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:49,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:52,513 INFO L124 PetriNetUnfolderBase]: 7746/12617 cut-off events. [2024-06-27 22:06:52,513 INFO L125 PetriNetUnfolderBase]: For 652359/652359 co-relation queries the response was YES. [2024-06-27 22:06:52,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95991 conditions, 12617 events. 7746/12617 cut-off events. For 652359/652359 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 87583 event pairs, 1486 based on Foata normal form. 20/12314 useless extension candidates. Maximal degree in co-relation 95890. Up to 9463 conditions per place. [2024-06-27 22:06:52,707 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 351 selfloop transitions, 268 changer transitions 0/629 dead transitions. [2024-06-27 22:06:52,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 629 transitions, 10432 flow [2024-06-27 22:06:52,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 22:06:52,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145833333333333 [2024-06-27 22:06:52,708 INFO L175 Difference]: Start difference. First operand has 270 places, 569 transitions, 8471 flow. Second operand 10 states and 247 transitions. [2024-06-27 22:06:52,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 629 transitions, 10432 flow [2024-06-27 22:06:54,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 629 transitions, 9996 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:54,060 INFO L231 Difference]: Finished difference. Result has 274 places, 572 transitions, 8717 flow [2024-06-27 22:06:54,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8059, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8717, PETRI_PLACES=274, PETRI_TRANSITIONS=572} [2024-06-27 22:06:54,061 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 220 predicate places. [2024-06-27 22:06:54,061 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 572 transitions, 8717 flow [2024-06-27 22:06:54,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:54,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:54,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:54,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:06:54,062 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:54,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:54,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1784606126, now seen corresponding path program 10 times [2024-06-27 22:06:54,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:54,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152913362] [2024-06-27 22:06:54,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:54,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:55,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152913362] [2024-06-27 22:06:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152913362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:55,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:55,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:55,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005308840] [2024-06-27 22:06:55,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:55,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:55,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:55,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:55,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:55,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:55,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 572 transitions, 8717 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:55,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:55,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:55,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:58,725 INFO L124 PetriNetUnfolderBase]: 7710/12221 cut-off events. [2024-06-27 22:06:58,725 INFO L125 PetriNetUnfolderBase]: For 624541/624541 co-relation queries the response was YES. [2024-06-27 22:06:58,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95131 conditions, 12221 events. 7710/12221 cut-off events. For 624541/624541 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 82080 event pairs, 1373 based on Foata normal form. 20/12030 useless extension candidates. Maximal degree in co-relation 95028. Up to 9407 conditions per place. [2024-06-27 22:06:58,899 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 388 selfloop transitions, 241 changer transitions 0/639 dead transitions. [2024-06-27 22:06:58,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 639 transitions, 10717 flow [2024-06-27 22:06:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 22:06:58,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:06:58,901 INFO L175 Difference]: Start difference. First operand has 274 places, 572 transitions, 8717 flow. Second operand 10 states and 250 transitions. [2024-06-27 22:06:58,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 639 transitions, 10717 flow [2024-06-27 22:07:00,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 639 transitions, 10016 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-27 22:07:00,585 INFO L231 Difference]: Finished difference. Result has 275 places, 572 transitions, 8509 flow [2024-06-27 22:07:00,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8016, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8509, PETRI_PLACES=275, PETRI_TRANSITIONS=572} [2024-06-27 22:07:00,586 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-27 22:07:00,586 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 572 transitions, 8509 flow [2024-06-27 22:07:00,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:00,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:00,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:00,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:07:00,586 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:00,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:00,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1221265601, now seen corresponding path program 2 times [2024-06-27 22:07:00,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:00,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624075822] [2024-06-27 22:07:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:00,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:02,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624075822] [2024-06-27 22:07:02,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624075822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:02,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:02,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236430378] [2024-06-27 22:07:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:02,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:02,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:02,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:02,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:02,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 572 transitions, 8509 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:02,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:02,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:02,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:05,608 INFO L124 PetriNetUnfolderBase]: 7789/12782 cut-off events. [2024-06-27 22:07:05,608 INFO L125 PetriNetUnfolderBase]: For 588869/588875 co-relation queries the response was YES. [2024-06-27 22:07:05,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94238 conditions, 12782 events. 7789/12782 cut-off events. For 588869/588875 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 89385 event pairs, 1659 based on Foata normal form. 8/12472 useless extension candidates. Maximal degree in co-relation 94134. Up to 10737 conditions per place. [2024-06-27 22:07:05,772 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 536 selfloop transitions, 101 changer transitions 0/647 dead transitions. [2024-06-27 22:07:05,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 647 transitions, 10642 flow [2024-06-27 22:07:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-06-27 22:07:05,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-27 22:07:05,773 INFO L175 Difference]: Start difference. First operand has 275 places, 572 transitions, 8509 flow. Second operand 10 states and 238 transitions. [2024-06-27 22:07:05,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 647 transitions, 10642 flow [2024-06-27 22:07:07,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 647 transitions, 9937 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 22:07:07,079 INFO L231 Difference]: Finished difference. Result has 275 places, 591 transitions, 8337 flow [2024-06-27 22:07:07,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7835, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8337, PETRI_PLACES=275, PETRI_TRANSITIONS=591} [2024-06-27 22:07:07,080 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-27 22:07:07,080 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 591 transitions, 8337 flow [2024-06-27 22:07:07,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:07,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:07,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:07,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:07:07,081 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:07,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1251601419, now seen corresponding path program 3 times [2024-06-27 22:07:07,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:07,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602284465] [2024-06-27 22:07:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:07,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:08,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:08,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602284465] [2024-06-27 22:07:08,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602284465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:08,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:08,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713765004] [2024-06-27 22:07:08,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:08,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:08,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:08,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:08,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:08,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 591 transitions, 8337 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:08,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:08,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:08,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:11,844 INFO L124 PetriNetUnfolderBase]: 7826/12672 cut-off events. [2024-06-27 22:07:11,845 INFO L125 PetriNetUnfolderBase]: For 592914/592920 co-relation queries the response was YES. [2024-06-27 22:07:11,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94220 conditions, 12672 events. 7826/12672 cut-off events. For 592914/592920 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 87772 event pairs, 1521 based on Foata normal form. 8/12400 useless extension candidates. Maximal degree in co-relation 94114. Up to 10595 conditions per place. [2024-06-27 22:07:12,030 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 535 selfloop transitions, 108 changer transitions 0/653 dead transitions. [2024-06-27 22:07:12,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 653 transitions, 10559 flow [2024-06-27 22:07:12,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-27 22:07:12,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020833333333333 [2024-06-27 22:07:12,032 INFO L175 Difference]: Start difference. First operand has 275 places, 591 transitions, 8337 flow. Second operand 10 states and 241 transitions. [2024-06-27 22:07:12,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 653 transitions, 10559 flow [2024-06-27 22:07:13,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 653 transitions, 10382 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:13,446 INFO L231 Difference]: Finished difference. Result has 280 places, 595 transitions, 8531 flow [2024-06-27 22:07:13,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8160, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8531, PETRI_PLACES=280, PETRI_TRANSITIONS=595} [2024-06-27 22:07:13,446 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 226 predicate places. [2024-06-27 22:07:13,446 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 595 transitions, 8531 flow [2024-06-27 22:07:13,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:13,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:13,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:13,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:07:13,447 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:13,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash 985577709, now seen corresponding path program 4 times [2024-06-27 22:07:13,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:13,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001861931] [2024-06-27 22:07:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:13,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:15,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:15,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001861931] [2024-06-27 22:07:15,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001861931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:15,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:15,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:15,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532737893] [2024-06-27 22:07:15,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:15,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:15,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:15,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:15,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 595 transitions, 8531 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:15,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:15,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:15,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:18,523 INFO L124 PetriNetUnfolderBase]: 7863/12762 cut-off events. [2024-06-27 22:07:18,523 INFO L125 PetriNetUnfolderBase]: For 605386/605392 co-relation queries the response was YES. [2024-06-27 22:07:18,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94705 conditions, 12762 events. 7863/12762 cut-off events. For 605386/605392 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 88664 event pairs, 1646 based on Foata normal form. 8/12474 useless extension candidates. Maximal degree in co-relation 94598. Up to 10847 conditions per place. [2024-06-27 22:07:18,660 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 543 selfloop transitions, 100 changer transitions 0/653 dead transitions. [2024-06-27 22:07:18,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 653 transitions, 10476 flow [2024-06-27 22:07:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:18,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-27 22:07:18,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979166666666667 [2024-06-27 22:07:18,661 INFO L175 Difference]: Start difference. First operand has 280 places, 595 transitions, 8531 flow. Second operand 10 states and 239 transitions. [2024-06-27 22:07:18,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 653 transitions, 10476 flow [2024-06-27 22:07:19,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 653 transitions, 10299 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:19,846 INFO L231 Difference]: Finished difference. Result has 286 places, 598 transitions, 8686 flow [2024-06-27 22:07:19,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8372, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8686, PETRI_PLACES=286, PETRI_TRANSITIONS=598} [2024-06-27 22:07:19,847 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 232 predicate places. [2024-06-27 22:07:19,847 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 598 transitions, 8686 flow [2024-06-27 22:07:19,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:19,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:19,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:19,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:07:19,848 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:19,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:19,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1784390645, now seen corresponding path program 5 times [2024-06-27 22:07:19,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:19,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886760018] [2024-06-27 22:07:19,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:19,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:21,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:21,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886760018] [2024-06-27 22:07:21,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886760018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:21,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:21,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:21,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828972453] [2024-06-27 22:07:21,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:21,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:21,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:21,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:21,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:21,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:21,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 598 transitions, 8686 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:21,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:21,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:21,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:24,892 INFO L124 PetriNetUnfolderBase]: 7900/12835 cut-off events. [2024-06-27 22:07:24,893 INFO L125 PetriNetUnfolderBase]: For 616912/616918 co-relation queries the response was YES. [2024-06-27 22:07:25,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95648 conditions, 12835 events. 7900/12835 cut-off events. For 616912/616918 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 89399 event pairs, 1632 based on Foata normal form. 8/12539 useless extension candidates. Maximal degree in co-relation 95538. Up to 10902 conditions per place. [2024-06-27 22:07:25,101 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 553 selfloop transitions, 96 changer transitions 0/659 dead transitions. [2024-06-27 22:07:25,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 659 transitions, 10667 flow [2024-06-27 22:07:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:25,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-06-27 22:07:25,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:07:25,103 INFO L175 Difference]: Start difference. First operand has 286 places, 598 transitions, 8686 flow. Second operand 10 states and 240 transitions. [2024-06-27 22:07:25,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 659 transitions, 10667 flow [2024-06-27 22:07:26,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 659 transitions, 10484 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:26,473 INFO L231 Difference]: Finished difference. Result has 291 places, 601 transitions, 8809 flow [2024-06-27 22:07:26,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8503, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8809, PETRI_PLACES=291, PETRI_TRANSITIONS=601} [2024-06-27 22:07:26,473 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 237 predicate places. [2024-06-27 22:07:26,473 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 601 transitions, 8809 flow [2024-06-27 22:07:26,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:26,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:26,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:26,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:07:26,474 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:26,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:26,474 INFO L85 PathProgramCache]: Analyzing trace with hash -191738483, now seen corresponding path program 2 times [2024-06-27 22:07:26,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:26,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684194806] [2024-06-27 22:07:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:26,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:28,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:28,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684194806] [2024-06-27 22:07:28,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684194806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:28,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:28,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:28,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82524770] [2024-06-27 22:07:28,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:28,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:28,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:28,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:07:28,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 601 transitions, 8809 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:28,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:28,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:07:28,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:31,163 INFO L124 PetriNetUnfolderBase]: 7149/11961 cut-off events. [2024-06-27 22:07:31,163 INFO L125 PetriNetUnfolderBase]: For 604896/605171 co-relation queries the response was YES. [2024-06-27 22:07:31,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88309 conditions, 11961 events. 7149/11961 cut-off events. For 604896/605171 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 86777 event pairs, 1578 based on Foata normal form. 50/11623 useless extension candidates. Maximal degree in co-relation 88197. Up to 9543 conditions per place. [2024-06-27 22:07:31,691 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 431 selfloop transitions, 85 changer transitions 0/634 dead transitions. [2024-06-27 22:07:31,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 634 transitions, 10513 flow [2024-06-27 22:07:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:07:31,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 22:07:31,694 INFO L175 Difference]: Start difference. First operand has 291 places, 601 transitions, 8809 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:07:31,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 634 transitions, 10513 flow [2024-06-27 22:07:32,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 634 transitions, 10190 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 22:07:32,947 INFO L231 Difference]: Finished difference. Result has 290 places, 611 transitions, 8921 flow [2024-06-27 22:07:32,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8486, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8921, PETRI_PLACES=290, PETRI_TRANSITIONS=611} [2024-06-27 22:07:32,948 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 236 predicate places. [2024-06-27 22:07:32,948 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 611 transitions, 8921 flow [2024-06-27 22:07:32,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:32,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:32,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:32,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:07:32,948 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:32,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:32,949 INFO L85 PathProgramCache]: Analyzing trace with hash -192214147, now seen corresponding path program 2 times [2024-06-27 22:07:32,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:32,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747653951] [2024-06-27 22:07:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:32,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:34,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:34,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747653951] [2024-06-27 22:07:34,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747653951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:34,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:34,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001652612] [2024-06-27 22:07:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:34,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:34,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:34,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:07:34,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 611 transitions, 8921 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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 22:07:34,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:34,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:07:34,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:37,104 INFO L124 PetriNetUnfolderBase]: 7481/12286 cut-off events. [2024-06-27 22:07:37,104 INFO L125 PetriNetUnfolderBase]: For 622645/622673 co-relation queries the response was YES. [2024-06-27 22:07:37,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92461 conditions, 12286 events. 7481/12286 cut-off events. For 622645/622673 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 86980 event pairs, 1633 based on Foata normal form. 25/11993 useless extension candidates. Maximal degree in co-relation 92347. Up to 10250 conditions per place. [2024-06-27 22:07:37,306 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 476 selfloop transitions, 75 changer transitions 0/631 dead transitions. [2024-06-27 22:07:37,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 631 transitions, 10191 flow [2024-06-27 22:07:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:07:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:07:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 22:07:37,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-27 22:07:37,308 INFO L175 Difference]: Start difference. First operand has 290 places, 611 transitions, 8921 flow. Second operand 7 states and 170 transitions. [2024-06-27 22:07:37,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 631 transitions, 10191 flow [2024-06-27 22:07:38,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 631 transitions, 10044 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:38,853 INFO L231 Difference]: Finished difference. Result has 294 places, 611 transitions, 8931 flow [2024-06-27 22:07:38,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8774, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8931, PETRI_PLACES=294, PETRI_TRANSITIONS=611} [2024-06-27 22:07:38,854 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 240 predicate places. [2024-06-27 22:07:38,854 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 611 transitions, 8931 flow [2024-06-27 22:07:38,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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 22:07:38,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:38,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:38,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:07:38,854 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:38,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:38,855 INFO L85 PathProgramCache]: Analyzing trace with hash -192213713, now seen corresponding path program 3 times [2024-06-27 22:07:38,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:38,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722099676] [2024-06-27 22:07:38,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:38,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:40,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:40,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722099676] [2024-06-27 22:07:40,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722099676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:40,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:40,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:40,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459719678] [2024-06-27 22:07:40,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:40,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:40,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:40,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:07:40,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 611 transitions, 8931 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:40,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:40,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:07:40,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:43,043 INFO L124 PetriNetUnfolderBase]: 7168/11965 cut-off events. [2024-06-27 22:07:43,043 INFO L125 PetriNetUnfolderBase]: For 625679/625944 co-relation queries the response was YES. [2024-06-27 22:07:43,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89363 conditions, 11965 events. 7168/11965 cut-off events. For 625679/625944 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 86600 event pairs, 1596 based on Foata normal form. 47/11637 useless extension candidates. Maximal degree in co-relation 89247. Up to 9638 conditions per place. [2024-06-27 22:07:43,239 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 438 selfloop transitions, 77 changer transitions 0/633 dead transitions. [2024-06-27 22:07:43,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 633 transitions, 10171 flow [2024-06-27 22:07:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:43,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:07:43,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-27 22:07:43,241 INFO L175 Difference]: Start difference. First operand has 294 places, 611 transitions, 8931 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:07:43,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 633 transitions, 10171 flow [2024-06-27 22:07:44,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 633 transitions, 9947 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:44,962 INFO L231 Difference]: Finished difference. Result has 296 places, 614 transitions, 8922 flow [2024-06-27 22:07:44,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8707, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8922, PETRI_PLACES=296, PETRI_TRANSITIONS=614} [2024-06-27 22:07:44,963 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 242 predicate places. [2024-06-27 22:07:44,963 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 614 transitions, 8922 flow [2024-06-27 22:07:44,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:44,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:44,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:44,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:07:44,963 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:44,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash 526275302, now seen corresponding path program 11 times [2024-06-27 22:07:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:44,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042811304] [2024-06-27 22:07:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:44,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:46,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:46,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042811304] [2024-06-27 22:07:46,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042811304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:46,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:46,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:46,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291116126] [2024-06-27 22:07:46,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:46,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:46,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:46,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:46,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:46,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:46,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 614 transitions, 8922 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:46,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:46,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:46,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:49,528 INFO L124 PetriNetUnfolderBase]: 8308/13370 cut-off events. [2024-06-27 22:07:49,528 INFO L125 PetriNetUnfolderBase]: For 726612/726614 co-relation queries the response was YES. [2024-06-27 22:07:49,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103360 conditions, 13370 events. 8308/13370 cut-off events. For 726612/726614 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 92843 event pairs, 1637 based on Foata normal form. 6/13113 useless extension candidates. Maximal degree in co-relation 103243. Up to 10525 conditions per place. [2024-06-27 22:07:49,721 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 493 selfloop transitions, 215 changer transitions 0/718 dead transitions. [2024-06-27 22:07:49,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 718 transitions, 11518 flow [2024-06-27 22:07:49,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:07:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:07:49,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 310 transitions. [2024-06-27 22:07:49,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2024-06-27 22:07:49,723 INFO L175 Difference]: Start difference. First operand has 296 places, 614 transitions, 8922 flow. Second operand 12 states and 310 transitions. [2024-06-27 22:07:49,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 718 transitions, 11518 flow [2024-06-27 22:07:51,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 718 transitions, 11337 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:51,497 INFO L231 Difference]: Finished difference. Result has 303 places, 629 transitions, 9605 flow [2024-06-27 22:07:51,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8751, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9605, PETRI_PLACES=303, PETRI_TRANSITIONS=629} [2024-06-27 22:07:51,497 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 249 predicate places. [2024-06-27 22:07:51,497 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 629 transitions, 9605 flow [2024-06-27 22:07:51,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:51,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:51,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:51,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:07:51,498 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:51,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1830402216, now seen corresponding path program 12 times [2024-06-27 22:07:51,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:51,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096183104] [2024-06-27 22:07:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:51,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:52,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:52,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096183104] [2024-06-27 22:07:52,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096183104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:52,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:52,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:52,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904920306] [2024-06-27 22:07:52,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:52,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:52,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:52,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:52,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:52,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:52,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 629 transitions, 9605 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:52,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:52,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:52,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:56,594 INFO L124 PetriNetUnfolderBase]: 8555/13854 cut-off events. [2024-06-27 22:07:56,594 INFO L125 PetriNetUnfolderBase]: For 831880/831882 co-relation queries the response was YES. [2024-06-27 22:07:56,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111626 conditions, 13854 events. 8555/13854 cut-off events. For 831880/831882 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 97629 event pairs, 1809 based on Foata normal form. 6/13565 useless extension candidates. Maximal degree in co-relation 111507. Up to 11310 conditions per place. [2024-06-27 22:07:56,805 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 538 selfloop transitions, 185 changer transitions 0/733 dead transitions. [2024-06-27 22:07:56,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 733 transitions, 12355 flow [2024-06-27 22:07:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:07:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:07:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2024-06-27 22:07:56,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-27 22:07:56,806 INFO L175 Difference]: Start difference. First operand has 303 places, 629 transitions, 9605 flow. Second operand 12 states and 308 transitions. [2024-06-27 22:07:56,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 733 transitions, 12355 flow [2024-06-27 22:07:58,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 733 transitions, 11961 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:58,855 INFO L231 Difference]: Finished difference. Result has 308 places, 641 transitions, 9979 flow [2024-06-27 22:07:58,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9251, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9979, PETRI_PLACES=308, PETRI_TRANSITIONS=641} [2024-06-27 22:07:58,855 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 254 predicate places. [2024-06-27 22:07:58,855 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 641 transitions, 9979 flow [2024-06-27 22:07:58,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:58,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:58,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:58,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:07:58,856 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:58,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash 113990318, now seen corresponding path program 13 times [2024-06-27 22:07:58,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:58,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342983255] [2024-06-27 22:07:58,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:58,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:00,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:00,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342983255] [2024-06-27 22:08:00,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342983255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:00,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:00,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:00,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860960876] [2024-06-27 22:08:00,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:00,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:08:00,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 641 transitions, 9979 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:00,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:00,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:08:00,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:04,721 INFO L124 PetriNetUnfolderBase]: 8519/13982 cut-off events. [2024-06-27 22:08:04,721 INFO L125 PetriNetUnfolderBase]: For 834164/834166 co-relation queries the response was YES. [2024-06-27 22:08:05,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110391 conditions, 13982 events. 8519/13982 cut-off events. For 834164/834166 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 99533 event pairs, 1889 based on Foata normal form. 22/13667 useless extension candidates. Maximal degree in co-relation 110269. Up to 11488 conditions per place. [2024-06-27 22:08:05,171 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 547 selfloop transitions, 174 changer transitions 0/731 dead transitions. [2024-06-27 22:08:05,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 731 transitions, 12202 flow [2024-06-27 22:08:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:08:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:08:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 304 transitions. [2024-06-27 22:08:05,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 22:08:05,173 INFO L175 Difference]: Start difference. First operand has 308 places, 641 transitions, 9979 flow. Second operand 12 states and 304 transitions. [2024-06-27 22:08:05,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 731 transitions, 12202 flow [2024-06-27 22:08:07,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 731 transitions, 11830 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-06-27 22:08:07,075 INFO L231 Difference]: Finished difference. Result has 312 places, 641 transitions, 9975 flow [2024-06-27 22:08:07,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9607, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9975, PETRI_PLACES=312, PETRI_TRANSITIONS=641} [2024-06-27 22:08:07,076 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 258 predicate places. [2024-06-27 22:08:07,076 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 641 transitions, 9975 flow [2024-06-27 22:08:07,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:07,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:07,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:07,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:08:07,077 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:07,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash 646662476, now seen corresponding path program 14 times [2024-06-27 22:08:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:07,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182399976] [2024-06-27 22:08:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:07,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:08,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:08,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182399976] [2024-06-27 22:08:08,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182399976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:08,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:08,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290918800] [2024-06-27 22:08:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:08,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:08,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:08,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:08,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:08,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:08:08,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 641 transitions, 9975 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:08,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:08,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:08:08,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:12,236 INFO L124 PetriNetUnfolderBase]: 7840/13505 cut-off events. [2024-06-27 22:08:12,236 INFO L125 PetriNetUnfolderBase]: For 974347/975071 co-relation queries the response was YES. [2024-06-27 22:08:12,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111699 conditions, 13505 events. 7840/13505 cut-off events. For 974347/975071 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 102458 event pairs, 1065 based on Foata normal form. 261/13205 useless extension candidates. Maximal degree in co-relation 111575. Up to 7863 conditions per place. [2024-06-27 22:08:12,559 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 430 selfloop transitions, 200 changer transitions 0/760 dead transitions. [2024-06-27 22:08:12,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 760 transitions, 12815 flow [2024-06-27 22:08:12,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 307 transitions. [2024-06-27 22:08:12,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5814393939393939 [2024-06-27 22:08:12,560 INFO L175 Difference]: Start difference. First operand has 312 places, 641 transitions, 9975 flow. Second operand 11 states and 307 transitions. [2024-06-27 22:08:12,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 760 transitions, 12815 flow [2024-06-27 22:08:14,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 760 transitions, 12465 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 22:08:14,810 INFO L231 Difference]: Finished difference. Result has 314 places, 650 transitions, 10355 flow [2024-06-27 22:08:14,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9625, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10355, PETRI_PLACES=314, PETRI_TRANSITIONS=650} [2024-06-27 22:08:14,811 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 260 predicate places. [2024-06-27 22:08:14,811 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 650 transitions, 10355 flow [2024-06-27 22:08:14,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:14,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:14,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:14,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:08:14,812 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:14,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:14,812 INFO L85 PathProgramCache]: Analyzing trace with hash -333520339, now seen corresponding path program 1 times [2024-06-27 22:08:14,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:14,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683549973] [2024-06-27 22:08:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:14,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:16,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683549973] [2024-06-27 22:08:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683549973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:16,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:16,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:16,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688344370] [2024-06-27 22:08:16,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:16,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:16,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:16,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:16,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:16,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:08:16,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 650 transitions, 10355 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:16,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:16,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:08:16,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:21,670 INFO L124 PetriNetUnfolderBase]: 9356/15034 cut-off events. [2024-06-27 22:08:21,671 INFO L125 PetriNetUnfolderBase]: For 1022862/1022868 co-relation queries the response was YES. [2024-06-27 22:08:21,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127150 conditions, 15034 events. 9356/15034 cut-off events. For 1022862/1022868 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 106533 event pairs, 1853 based on Foata normal form. 17/14780 useless extension candidates. Maximal degree in co-relation 127024. Up to 11753 conditions per place. [2024-06-27 22:08:21,903 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 466 selfloop transitions, 267 changer transitions 0/743 dead transitions. [2024-06-27 22:08:21,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 743 transitions, 13041 flow [2024-06-27 22:08:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2024-06-27 22:08:21,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-27 22:08:21,905 INFO L175 Difference]: Start difference. First operand has 314 places, 650 transitions, 10355 flow. Second operand 10 states and 276 transitions. [2024-06-27 22:08:21,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 743 transitions, 13041 flow [2024-06-27 22:08:24,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 743 transitions, 12767 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 22:08:24,368 INFO L231 Difference]: Finished difference. Result has 317 places, 657 transitions, 10804 flow [2024-06-27 22:08:24,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10111, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10804, PETRI_PLACES=317, PETRI_TRANSITIONS=657} [2024-06-27 22:08:24,369 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 263 predicate places. [2024-06-27 22:08:24,369 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 657 transitions, 10804 flow [2024-06-27 22:08:24,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:24,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:24,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:24,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:08:24,370 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:24,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1090484740, now seen corresponding path program 15 times [2024-06-27 22:08:24,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:24,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521860608] [2024-06-27 22:08:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:24,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:25,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:25,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521860608] [2024-06-27 22:08:25,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521860608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:25,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:25,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:25,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634513857] [2024-06-27 22:08:25,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:25,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:25,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:25,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:25,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:26,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:08:26,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 657 transitions, 10804 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:26,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:26,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:08:26,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:30,850 INFO L124 PetriNetUnfolderBase]: 9757/15691 cut-off events. [2024-06-27 22:08:30,850 INFO L125 PetriNetUnfolderBase]: For 987328/987330 co-relation queries the response was YES. [2024-06-27 22:08:30,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131780 conditions, 15691 events. 9757/15691 cut-off events. For 987328/987330 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 112036 event pairs, 2093 based on Foata normal form. 8/15407 useless extension candidates. Maximal degree in co-relation 131653. Up to 13031 conditions per place. [2024-06-27 22:08:31,075 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 580 selfloop transitions, 201 changer transitions 0/791 dead transitions. [2024-06-27 22:08:31,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 791 transitions, 14207 flow [2024-06-27 22:08:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:31,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-06-27 22:08:31,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-06-27 22:08:31,076 INFO L175 Difference]: Start difference. First operand has 317 places, 657 transitions, 10804 flow. Second operand 11 states and 280 transitions. [2024-06-27 22:08:31,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 791 transitions, 14207 flow [2024-06-27 22:08:33,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 791 transitions, 13641 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:33,658 INFO L231 Difference]: Finished difference. Result has 323 places, 716 transitions, 12020 flow [2024-06-27 22:08:33,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10250, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12020, PETRI_PLACES=323, PETRI_TRANSITIONS=716} [2024-06-27 22:08:33,659 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 269 predicate places. [2024-06-27 22:08:33,659 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 716 transitions, 12020 flow [2024-06-27 22:08:33,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:33,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:33,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:33,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:08:33,659 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:33,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:33,659 INFO L85 PathProgramCache]: Analyzing trace with hash -675296798, now seen corresponding path program 16 times [2024-06-27 22:08:33,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:33,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296278899] [2024-06-27 22:08:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:33,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat