./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/rfi000_tso.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_tso.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 16:00:36,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 16:00:36,374 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 16:00:36,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 16:00:36,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 16:00:36,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 16:00:36,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 16:00:36,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 16:00:36,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 16:00:36,412 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 16:00:36,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 16:00:36,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 16:00:36,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 16:00:36,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 16:00:36,414 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 16:00:36,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 16:00:36,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 16:00:36,415 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 16:00:36,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 16:00:36,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 16:00:36,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 16:00:36,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 16:00:36,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 16:00:36,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 16:00:36,417 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 16:00:36,417 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 16:00:36,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 16:00:36,418 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 16:00:36,418 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 16:00:36,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 16:00:36,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 16:00:36,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 16:00:36,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:00:36,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 16:00:36,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 16:00:36,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 16:00:36,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 16:00:36,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 16:00:36,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 16:00:36,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 16:00:36,421 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 16:00:36,422 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 16:00:36,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 16:00:36,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 16:00:36,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 16:00:36,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 16:00:36,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 16:00:36,770 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 16:00:36,771 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 16:00:36,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-04 16:00:37,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 16:00:38,177 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 16:00:38,182 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-04 16:00:38,206 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f37c888cf/6e23c750e3ce414298d3bbed71209d4f/FLAG6d5564633 [2024-06-04 16:00:38,223 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f37c888cf/6e23c750e3ce414298d3bbed71209d4f [2024-06-04 16:00:38,226 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 16:00:38,228 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 16:00:38,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_tso.yml/witness.yml [2024-06-04 16:00:38,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 16:00:38,393 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 16:00:38,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 16:00:38,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 16:00:38,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 16:00:38,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:00:38" (1/2) ... [2024-06-04 16:00:38,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9dafc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:38, skipping insertion in model container [2024-06-04 16:00:38,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:00:38" (1/2) ... [2024-06-04 16:00:38,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2736c1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:38, skipping insertion in model container [2024-06-04 16:00:38,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:00:38" (2/2) ... [2024-06-04 16:00:38,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9dafc8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:38, skipping insertion in model container [2024-06-04 16:00:38,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:00:38" (2/2) ... [2024-06-04 16:00:38,406 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 16:00:38,476 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 16:00:38,477 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd1 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd1 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd1 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL))) && (! multithreaded || (((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 1) && y$w_buff1 <= 1) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-04 16:00:38,478 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] (((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd1 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd1 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd1 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL))) && (! multithreaded || (((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 1) && y$w_buff1 <= 1) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-04 16:00:38,478 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 16:00:38,479 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-04 16:00:38,524 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 16:00:38,875 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:00:38,887 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 16:00:39,136 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:00:39,175 INFO L206 MainTranslator]: Completed translation [2024-06-04 16:00:39,176 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39 WrapperNode [2024-06-04 16:00:39,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 16:00:39,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 16:00:39,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 16:00:39,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 16:00:39,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,314 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 176 [2024-06-04 16:00:39,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 16:00:39,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 16:00:39,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 16:00:39,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 16:00:39,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,391 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]. [2024-06-04 16:00:39,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 16:00:39,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 16:00:39,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 16:00:39,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 16:00:39,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (1/1) ... [2024-06-04 16:00:39,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:00:39,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:00:39,529 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) [2024-06-04 16:00:39,548 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 [2024-06-04 16:00:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 16:00:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 16:00:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 16:00:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 16:00:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 16:00:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 16:00:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 16:00:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 16:00:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 16:00:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 16:00:39,618 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 16:00:39,752 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 16:00:39,754 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 16:00:40,541 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 16:00:40,542 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 16:00:40,786 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 16:00:40,787 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 16:00:40,790 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:00:40 BoogieIcfgContainer [2024-06-04 16:00:40,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 16:00:40,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 16:00:40,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 16:00:40,796 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 16:00:40,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 04:00:38" (1/4) ... [2024-06-04 16:00:40,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7e7ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:00:40, skipping insertion in model container [2024-06-04 16:00:40,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:00:38" (2/4) ... [2024-06-04 16:00:40,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7e7ed6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:00:40, skipping insertion in model container [2024-06-04 16:00:40,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:39" (3/4) ... [2024-06-04 16:00:40,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7e7ed6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:00:40, skipping insertion in model container [2024-06-04 16:00:40,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:00:40" (4/4) ... [2024-06-04 16:00:40,799 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2024-06-04 16:00:40,817 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 16:00:40,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 16:00:40,818 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 16:00:40,899 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 16:00:40,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 16:00:40,994 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 16:00:41,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:00:41,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 16:00:41,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 16:00:41,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 16:00:41,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 16:00:41,028 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;@2e68d888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 16:00:41,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 16:00:41,036 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 16:00:41,036 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 16:00:41,036 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:00:41,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:41,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 16:00:41,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:00:41,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash -400399295, now seen corresponding path program 1 times [2024-06-04 16:00:41,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:41,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010938331] [2024-06-04 16:00:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:41,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:44,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010938331] [2024-06-04 16:00:44,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010938331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:44,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:44,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 16:00:44,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50300552] [2024-06-04 16:00:44,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:44,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:00:44,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:44,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:00:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:00:44,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 16:00:44,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:44,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:44,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 16:00:44,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:44,434 INFO L124 PetriNetUnfolderBase]: 216/387 cut-off events. [2024-06-04 16:00:44,435 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 16:00:44,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 387 events. 216/387 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1367 event pairs, 133 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-04 16:00:44,440 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 16:00:44,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 125 flow [2024-06-04 16:00:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:00:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:00:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-04 16:00:44,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 16:00:44,452 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 48 transitions. [2024-06-04 16:00:44,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 125 flow [2024-06-04 16:00:44,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 16:00:44,456 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 16:00:44,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-04 16:00:44,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 16:00:44,461 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 16:00:44,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:44,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:44,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:00:44,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 16:00:44,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:00:44,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:44,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1763365024, now seen corresponding path program 1 times [2024-06-04 16:00:44,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:44,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609203600] [2024-06-04 16:00:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:44,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:46,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:46,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609203600] [2024-06-04 16:00:46,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609203600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:46,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:46,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 16:00:46,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605477711] [2024-06-04 16:00:46,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:46,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 16:00:46,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:46,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 16:00:46,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 16:00:46,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 16:00:46,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:46,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:46,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 16:00:46,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:46,842 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-04 16:00:46,843 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-04 16:00:46,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 382 events. 213/382 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1339 event pairs, 109 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-04 16:00:46,847 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-04 16:00:46,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 167 flow [2024-06-04 16:00:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 16:00:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 16:00:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-04 16:00:46,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-04 16:00:46,849 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2024-06-04 16:00:46,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 167 flow [2024-06-04 16:00:46,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 16:00:46,852 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 16:00:46,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-04 16:00:46,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 16:00:46,853 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 16:00:46,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:46,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:46,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:00:46,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 16:00:46,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:00:46,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:46,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1170258078, now seen corresponding path program 1 times [2024-06-04 16:00:46,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:46,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113474116] [2024-06-04 16:00:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:46,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:48,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:48,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113474116] [2024-06-04 16:00:48,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113474116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:48,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:48,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:00:48,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836446988] [2024-06-04 16:00:48,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:48,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:00:48,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:48,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:00:48,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 16:00:48,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 16:00:48,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:48,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:48,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 16:00:48,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:49,192 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-04 16:00:49,192 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2024-06-04 16:00:49,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 386 events. 215/386 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1365 event pairs, 53 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 958. Up to 320 conditions per place. [2024-06-04 16:00:49,198 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-06-04 16:00:49,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 267 flow [2024-06-04 16:00:49,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:00:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:00:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-04 16:00:49,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 16:00:49,207 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 80 transitions. [2024-06-04 16:00:49,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 267 flow [2024-06-04 16:00:49,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 52 transitions, 258 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 16:00:49,212 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 164 flow [2024-06-04 16:00:49,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-06-04 16:00:49,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-04 16:00:49,214 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 164 flow [2024-06-04 16:00:49,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:49,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:49,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:00:49,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 16:00:49,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:00:49,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash 663452449, now seen corresponding path program 1 times [2024-06-04 16:00:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:49,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771479337] [2024-06-04 16:00:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:49,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:51,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:51,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771479337] [2024-06-04 16:00:51,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771479337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:51,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:51,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:00:51,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194629553] [2024-06-04 16:00:51,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:51,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:00:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:51,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:00:51,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:00:51,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 16:00:51,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:51,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:51,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 16:00:51,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:52,129 INFO L124 PetriNetUnfolderBase]: 216/389 cut-off events. [2024-06-04 16:00:52,129 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-06-04 16:00:52,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 389 events. 216/389 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1380 event pairs, 28 based on Foata normal form. 6/395 useless extension candidates. Maximal degree in co-relation 1151. Up to 297 conditions per place. [2024-06-04 16:00:52,133 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2024-06-04 16:00:52,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 318 flow [2024-06-04 16:00:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:00:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:00:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-04 16:00:52,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-04 16:00:52,135 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 164 flow. Second operand 6 states and 88 transitions. [2024-06-04 16:00:52,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 318 flow [2024-06-04 16:00:52,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 314 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-04 16:00:52,138 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 189 flow [2024-06-04 16:00:52,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-06-04 16:00:52,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-04 16:00:52,139 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 189 flow [2024-06-04 16:00:52,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:52,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:52,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:00:52,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 16:00:52,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:00:52,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:52,141 INFO L85 PathProgramCache]: Analyzing trace with hash 163026754, now seen corresponding path program 1 times [2024-06-04 16:00:52,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:52,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809457241] [2024-06-04 16:00:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:52,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:56,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:56,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809457241] [2024-06-04 16:00:56,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809457241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:56,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:56,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:00:56,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392803723] [2024-06-04 16:00:56,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:56,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:00:56,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:56,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:00:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:00:56,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:00:56,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:56,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:56,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:00:56,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:56,460 INFO L124 PetriNetUnfolderBase]: 214/386 cut-off events. [2024-06-04 16:00:56,460 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2024-06-04 16:00:56,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 386 events. 214/386 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1358 event pairs, 77 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 1243. Up to 374 conditions per place. [2024-06-04 16:00:56,463 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 33 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-06-04 16:00:56,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 279 flow [2024-06-04 16:00:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:00:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:00:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-04 16:00:56,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 16:00:56,465 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 189 flow. Second operand 5 states and 56 transitions. [2024-06-04 16:00:56,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 279 flow [2024-06-04 16:00:56,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 248 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 16:00:56,469 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 175 flow [2024-06-04 16:00:56,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-06-04 16:00:56,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-04 16:00:56,470 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 175 flow [2024-06-04 16:00:56,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:56,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:56,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:00:56,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 16:00:56,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:00:56,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:56,471 INFO L85 PathProgramCache]: Analyzing trace with hash 747764070, now seen corresponding path program 1 times [2024-06-04 16:00:56,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:56,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497462942] [2024-06-04 16:00:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:56,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:59,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:59,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497462942] [2024-06-04 16:00:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497462942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:59,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:59,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:00:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458055797] [2024-06-04 16:00:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:59,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:00:59,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:59,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:00:59,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:00:59,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:00:59,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:59,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:59,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:00:59,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:59,827 INFO L124 PetriNetUnfolderBase]: 212/383 cut-off events. [2024-06-04 16:00:59,827 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-04 16:00:59,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1244 conditions, 383 events. 212/383 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1359 event pairs, 76 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1219. Up to 368 conditions per place. [2024-06-04 16:00:59,832 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-04 16:00:59,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 281 flow [2024-06-04 16:00:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:00:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:00:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-04 16:00:59,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 16:00:59,835 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 175 flow. Second operand 6 states and 64 transitions. [2024-06-04 16:00:59,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 281 flow [2024-06-04 16:00:59,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 266 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 16:00:59,838 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 193 flow [2024-06-04 16:00:59,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-04 16:00:59,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 16:00:59,841 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 193 flow [2024-06-04 16:00:59,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:00:59,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:59,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:00:59,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 16:00:59,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:00:59,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2032158461, now seen corresponding path program 1 times [2024-06-04 16:00:59,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:59,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315308182] [2024-06-04 16:00:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:59,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:03,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:03,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315308182] [2024-06-04 16:01:03,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315308182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:03,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:03,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:03,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418909310] [2024-06-04 16:01:03,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:03,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:03,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:03,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:03,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:03,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:03,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:03,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:03,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:03,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:03,922 INFO L124 PetriNetUnfolderBase]: 211/382 cut-off events. [2024-06-04 16:01:03,922 INFO L125 PetriNetUnfolderBase]: For 1022/1022 co-relation queries the response was YES. [2024-06-04 16:01:03,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 382 events. 211/382 cut-off events. For 1022/1022 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1356 event pairs, 53 based on Foata normal form. 3/385 useless extension candidates. Maximal degree in co-relation 1287. Up to 318 conditions per place. [2024-06-04 16:01:03,925 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-04 16:01:03,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 346 flow [2024-06-04 16:01:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:01:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:01:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-04 16:01:03,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 16:01:03,927 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 193 flow. Second operand 6 states and 74 transitions. [2024-06-04 16:01:03,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 346 flow [2024-06-04 16:01:03,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 329 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 16:01:03,931 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 224 flow [2024-06-04 16:01:03,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-06-04 16:01:03,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-04 16:01:03,933 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 224 flow [2024-06-04 16:01:03,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:03,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:03,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:03,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 16:01:03,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:03,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2050102357, now seen corresponding path program 2 times [2024-06-04 16:01:03,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:03,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619141903] [2024-06-04 16:01:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:03,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:07,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:07,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619141903] [2024-06-04 16:01:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619141903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:07,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:07,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742887551] [2024-06-04 16:01:07,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:07,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:07,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:07,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:07,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:07,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:07,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:07,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:07,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:07,915 INFO L124 PetriNetUnfolderBase]: 206/374 cut-off events. [2024-06-04 16:01:07,915 INFO L125 PetriNetUnfolderBase]: For 1294/1294 co-relation queries the response was YES. [2024-06-04 16:01:07,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 374 events. 206/374 cut-off events. For 1294/1294 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1313 event pairs, 66 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 1319. Up to 311 conditions per place. [2024-06-04 16:01:07,920 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 32 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2024-06-04 16:01:07,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 334 flow [2024-06-04 16:01:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:01:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:01:07,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-04 16:01:07,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 16:01:07,924 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 224 flow. Second operand 6 states and 71 transitions. [2024-06-04 16:01:07,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 334 flow [2024-06-04 16:01:07,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 319 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 16:01:07,930 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 242 flow [2024-06-04 16:01:07,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-06-04 16:01:07,937 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-04 16:01:07,938 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 242 flow [2024-06-04 16:01:07,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:07,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:07,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:07,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 16:01:07,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:07,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1705851263, now seen corresponding path program 1 times [2024-06-04 16:01:07,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:07,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048004316] [2024-06-04 16:01:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:07,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:11,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:11,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048004316] [2024-06-04 16:01:11,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048004316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:11,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:11,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614348659] [2024-06-04 16:01:11,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:11,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:11,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:11,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:11,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 242 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:11,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:11,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:11,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:11,491 INFO L124 PetriNetUnfolderBase]: 204/369 cut-off events. [2024-06-04 16:01:11,492 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2024-06-04 16:01:11,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 369 events. 204/369 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1293 event pairs, 71 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1353. Up to 351 conditions per place. [2024-06-04 16:01:11,495 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-04 16:01:11,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 362 flow [2024-06-04 16:01:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-04 16:01:11,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-04 16:01:11,497 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 242 flow. Second operand 7 states and 72 transitions. [2024-06-04 16:01:11,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 362 flow [2024-06-04 16:01:11,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 316 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 16:01:11,501 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 235 flow [2024-06-04 16:01:11,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-04 16:01:11,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-04 16:01:11,503 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 235 flow [2024-06-04 16:01:11,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:11,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:11,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:11,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 16:01:11,504 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:11,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1164405607, now seen corresponding path program 1 times [2024-06-04 16:01:11,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:11,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25200191] [2024-06-04 16:01:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:11,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:14,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:14,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25200191] [2024-06-04 16:01:14,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25200191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:14,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:14,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:14,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257954249] [2024-06-04 16:01:14,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:14,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:14,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:14,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:14,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:14,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:14,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 235 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:14,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:14,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:14,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:15,118 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-04 16:01:15,119 INFO L125 PetriNetUnfolderBase]: For 1863/1863 co-relation queries the response was YES. [2024-06-04 16:01:15,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 385 events. 213/385 cut-off events. For 1863/1863 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1373 event pairs, 56 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 1423. Up to 314 conditions per place. [2024-06-04 16:01:15,122 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 39 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2024-06-04 16:01:15,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 415 flow [2024-06-04 16:01:15,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-04 16:01:15,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-04 16:01:15,124 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 235 flow. Second operand 7 states and 82 transitions. [2024-06-04 16:01:15,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 415 flow [2024-06-04 16:01:15,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 392 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 16:01:15,128 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 319 flow [2024-06-04 16:01:15,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-04 16:01:15,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-04 16:01:15,130 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 319 flow [2024-06-04 16:01:15,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:15,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:15,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 16:01:15,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:15,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash -876697211, now seen corresponding path program 2 times [2024-06-04 16:01:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:15,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749497266] [2024-06-04 16:01:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:15,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:17,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:17,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749497266] [2024-06-04 16:01:17,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749497266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:17,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:17,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:17,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527913537] [2024-06-04 16:01:17,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:17,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:17,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:17,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:17,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:17,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:17,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:17,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:17,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:17,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:17,982 INFO L124 PetriNetUnfolderBase]: 216/391 cut-off events. [2024-06-04 16:01:17,983 INFO L125 PetriNetUnfolderBase]: For 2315/2317 co-relation queries the response was YES. [2024-06-04 16:01:17,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 391 events. 216/391 cut-off events. For 2315/2317 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1390 event pairs, 63 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1638. Up to 325 conditions per place. [2024-06-04 16:01:17,986 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 19 changer transitions 0/59 dead transitions. [2024-06-04 16:01:17,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 463 flow [2024-06-04 16:01:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 16:01:17,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-04 16:01:17,989 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 319 flow. Second operand 7 states and 79 transitions. [2024-06-04 16:01:17,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 463 flow [2024-06-04 16:01:17,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 442 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 16:01:17,992 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 359 flow [2024-06-04 16:01:17,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-04 16:01:17,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-04 16:01:17,993 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 359 flow [2024-06-04 16:01:17,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:17,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:17,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:17,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 16:01:17,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:17,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1341774277, now seen corresponding path program 3 times [2024-06-04 16:01:17,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:17,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020701683] [2024-06-04 16:01:17,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:17,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:20,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:20,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020701683] [2024-06-04 16:01:20,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020701683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:20,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:20,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:20,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408793772] [2024-06-04 16:01:20,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:20,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:20,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:20,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:20,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:20,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:20,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 359 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:20,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:20,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:20,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:21,069 INFO L124 PetriNetUnfolderBase]: 219/396 cut-off events. [2024-06-04 16:01:21,070 INFO L125 PetriNetUnfolderBase]: For 2846/2848 co-relation queries the response was YES. [2024-06-04 16:01:21,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 396 events. 219/396 cut-off events. For 2846/2848 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1417 event pairs, 62 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 1729. Up to 311 conditions per place. [2024-06-04 16:01:21,073 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 36 selfloop transitions, 27 changer transitions 0/65 dead transitions. [2024-06-04 16:01:21,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 563 flow [2024-06-04 16:01:21,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-04 16:01:21,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-04 16:01:21,076 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 359 flow. Second operand 7 states and 83 transitions. [2024-06-04 16:01:21,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 563 flow [2024-06-04 16:01:21,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 518 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 16:01:21,083 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 424 flow [2024-06-04 16:01:21,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-04 16:01:21,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 16:01:21,084 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 424 flow [2024-06-04 16:01:21,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:21,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:21,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:21,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 16:01:21,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:21,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1236624323, now seen corresponding path program 1 times [2024-06-04 16:01:21,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:21,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389694429] [2024-06-04 16:01:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:21,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:25,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:25,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389694429] [2024-06-04 16:01:25,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389694429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:25,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:25,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:01:25,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391084759] [2024-06-04 16:01:25,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:25,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:01:25,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:01:25,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:01:25,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:25,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-04 16:01:25,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:25,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:25,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:26,179 INFO L124 PetriNetUnfolderBase]: 217/391 cut-off events. [2024-06-04 16:01:26,179 INFO L125 PetriNetUnfolderBase]: For 3237/3237 co-relation queries the response was YES. [2024-06-04 16:01:26,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 391 events. 217/391 cut-off events. For 3237/3237 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1373 event pairs, 48 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1828. Up to 370 conditions per place. [2024-06-04 16:01:26,183 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2024-06-04 16:01:26,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 582 flow [2024-06-04 16:01:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:01:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:01:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-04 16:01:26,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 16:01:26,184 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 424 flow. Second operand 8 states and 80 transitions. [2024-06-04 16:01:26,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 582 flow [2024-06-04 16:01:26,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 543 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 16:01:26,190 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 430 flow [2024-06-04 16:01:26,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=430, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-06-04 16:01:26,191 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-04 16:01:26,191 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 430 flow [2024-06-04 16:01:26,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-04 16:01:26,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:26,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:26,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 16:01:26,192 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:26,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:26,193 INFO L85 PathProgramCache]: Analyzing trace with hash 970697103, now seen corresponding path program 1 times [2024-06-04 16:01:26,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:26,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642969760] [2024-06-04 16:01:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:28,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642969760] [2024-06-04 16:01:28,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642969760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:28,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:28,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:28,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710613895] [2024-06-04 16:01:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:28,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:28,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:28,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:29,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:29,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 430 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:29,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:29,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:29,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:29,320 INFO L124 PetriNetUnfolderBase]: 223/402 cut-off events. [2024-06-04 16:01:29,320 INFO L125 PetriNetUnfolderBase]: For 3780/3780 co-relation queries the response was YES. [2024-06-04 16:01:29,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1969 conditions, 402 events. 223/402 cut-off events. For 3780/3780 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1442 event pairs, 55 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 1932. Up to 334 conditions per place. [2024-06-04 16:01:29,323 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 20 changer transitions 0/74 dead transitions. [2024-06-04 16:01:29,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 74 transitions, 630 flow [2024-06-04 16:01:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:29,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-04 16:01:29,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 16:01:29,325 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 430 flow. Second operand 7 states and 84 transitions. [2024-06-04 16:01:29,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 74 transitions, 630 flow [2024-06-04 16:01:29,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 601 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 16:01:29,330 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 468 flow [2024-06-04 16:01:29,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-06-04 16:01:29,331 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-04 16:01:29,331 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 468 flow [2024-06-04 16:01:29,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:29,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:29,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:29,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 16:01:29,332 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:29,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:29,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1305888034, now seen corresponding path program 1 times [2024-06-04 16:01:29,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:29,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362344307] [2024-06-04 16:01:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:29,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:32,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362344307] [2024-06-04 16:01:32,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362344307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:32,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:32,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:01:32,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739496696] [2024-06-04 16:01:32,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:32,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:01:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:32,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:01:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:01:32,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:32,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 468 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-04 16:01:32,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:32,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:32,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:32,982 INFO L124 PetriNetUnfolderBase]: 232/417 cut-off events. [2024-06-04 16:01:32,982 INFO L125 PetriNetUnfolderBase]: For 4449/4449 co-relation queries the response was YES. [2024-06-04 16:01:32,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 417 events. 232/417 cut-off events. For 4449/4449 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1519 event pairs, 53 based on Foata normal form. 3/420 useless extension candidates. Maximal degree in co-relation 2088. Up to 335 conditions per place. [2024-06-04 16:01:32,986 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 51 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2024-06-04 16:01:32,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 680 flow [2024-06-04 16:01:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:01:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:01:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 16:01:32,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 16:01:32,988 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 468 flow. Second operand 8 states and 92 transitions. [2024-06-04 16:01:32,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 680 flow [2024-06-04 16:01:32,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 627 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-04 16:01:32,994 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 499 flow [2024-06-04 16:01:32,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=499, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-04 16:01:32,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-04 16:01:32,995 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 499 flow [2024-06-04 16:01:32,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-04 16:01:32,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:32,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:32,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 16:01:32,996 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:32,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1305887817, now seen corresponding path program 2 times [2024-06-04 16:01:32,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:32,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830787821] [2024-06-04 16:01:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:35,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830787821] [2024-06-04 16:01:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830787821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:35,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:35,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:35,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827250682] [2024-06-04 16:01:35,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:35,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:35,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:35,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 499 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:35,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:35,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:35,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:35,878 INFO L124 PetriNetUnfolderBase]: 238/427 cut-off events. [2024-06-04 16:01:35,879 INFO L125 PetriNetUnfolderBase]: For 4968/4968 co-relation queries the response was YES. [2024-06-04 16:01:35,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 427 events. 238/427 cut-off events. For 4968/4968 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1565 event pairs, 53 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 2224. Up to 339 conditions per place. [2024-06-04 16:01:35,884 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 23 changer transitions 0/77 dead transitions. [2024-06-04 16:01:35,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 709 flow [2024-06-04 16:01:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-04 16:01:35,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-04 16:01:35,887 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 499 flow. Second operand 7 states and 82 transitions. [2024-06-04 16:01:35,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 709 flow [2024-06-04 16:01:35,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 647 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 16:01:35,896 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 517 flow [2024-06-04 16:01:35,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-06-04 16:01:35,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-04 16:01:35,898 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 517 flow [2024-06-04 16:01:35,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:35,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:35,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:35,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 16:01:35,898 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:35,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:35,899 INFO L85 PathProgramCache]: Analyzing trace with hash -768246524, now seen corresponding path program 2 times [2024-06-04 16:01:35,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:35,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927958646] [2024-06-04 16:01:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:35,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:38,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:38,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927958646] [2024-06-04 16:01:38,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927958646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:38,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:38,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:01:38,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57477882] [2024-06-04 16:01:38,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:38,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:01:38,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:01:38,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:01:38,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:38,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 517 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-04 16:01:38,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:38,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:38,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:39,189 INFO L124 PetriNetUnfolderBase]: 241/431 cut-off events. [2024-06-04 16:01:39,189 INFO L125 PetriNetUnfolderBase]: For 5462/5462 co-relation queries the response was YES. [2024-06-04 16:01:39,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 431 events. 241/431 cut-off events. For 5462/5462 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1562 event pairs, 48 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 2302. Up to 410 conditions per place. [2024-06-04 16:01:39,194 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 61 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-06-04 16:01:39,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 701 flow [2024-06-04 16:01:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:01:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:01:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-04 16:01:39,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 16:01:39,195 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 517 flow. Second operand 8 states and 80 transitions. [2024-06-04 16:01:39,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 701 flow [2024-06-04 16:01:39,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 639 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 16:01:39,202 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 508 flow [2024-06-04 16:01:39,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-06-04 16:01:39,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-04 16:01:39,203 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 508 flow [2024-06-04 16:01:39,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-04 16:01:39,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:39,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:39,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 16:01:39,204 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:39,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash 319076239, now seen corresponding path program 3 times [2024-06-04 16:01:39,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:39,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395784505] [2024-06-04 16:01:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:41,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:41,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395784505] [2024-06-04 16:01:41,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395784505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:41,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:41,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:41,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091287046] [2024-06-04 16:01:41,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:41,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:41,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:41,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:41,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:41,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:41,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 508 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:41,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:41,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:41,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:42,105 INFO L124 PetriNetUnfolderBase]: 242/435 cut-off events. [2024-06-04 16:01:42,105 INFO L125 PetriNetUnfolderBase]: For 6168/6170 co-relation queries the response was YES. [2024-06-04 16:01:42,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 435 events. 242/435 cut-off events. For 6168/6170 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1605 event pairs, 64 based on Foata normal form. 2/437 useless extension candidates. Maximal degree in co-relation 2308. Up to 326 conditions per place. [2024-06-04 16:01:42,109 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 52 selfloop transitions, 27 changer transitions 0/81 dead transitions. [2024-06-04 16:01:42,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 786 flow [2024-06-04 16:01:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:42,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 16:01:42,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-04 16:01:42,111 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 508 flow. Second operand 7 states and 81 transitions. [2024-06-04 16:01:42,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 786 flow [2024-06-04 16:01:42,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 81 transitions, 749 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 16:01:42,119 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 590 flow [2024-06-04 16:01:42,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2024-06-04 16:01:42,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-04 16:01:42,120 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 590 flow [2024-06-04 16:01:42,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:42,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:42,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:42,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 16:01:42,121 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:42,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1407808192, now seen corresponding path program 3 times [2024-06-04 16:01:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:42,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72310027] [2024-06-04 16:01:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:45,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:45,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72310027] [2024-06-04 16:01:45,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72310027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:45,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:45,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:01:45,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455504521] [2024-06-04 16:01:45,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:45,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:01:45,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:01:45,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:01:45,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:45,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-04 16:01:45,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:45,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:45,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:45,696 INFO L124 PetriNetUnfolderBase]: 245/441 cut-off events. [2024-06-04 16:01:45,696 INFO L125 PetriNetUnfolderBase]: For 6762/6762 co-relation queries the response was YES. [2024-06-04 16:01:45,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 441 events. 245/441 cut-off events. For 6762/6762 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1630 event pairs, 53 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2434. Up to 371 conditions per place. [2024-06-04 16:01:45,700 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 23 changer transitions 0/85 dead transitions. [2024-06-04 16:01:45,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 85 transitions, 832 flow [2024-06-04 16:01:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:01:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:01:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 16:01:45,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 16:01:45,702 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 590 flow. Second operand 9 states and 96 transitions. [2024-06-04 16:01:45,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 85 transitions, 832 flow [2024-06-04 16:01:45,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 787 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-04 16:01:45,712 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 642 flow [2024-06-04 16:01:45,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=642, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-06-04 16:01:45,713 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-04 16:01:45,713 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 642 flow [2024-06-04 16:01:45,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-04 16:01:45,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:45,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:45,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 16:01:45,714 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:45,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:45,714 INFO L85 PathProgramCache]: Analyzing trace with hash 319076456, now seen corresponding path program 4 times [2024-06-04 16:01:45,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:45,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957672975] [2024-06-04 16:01:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:45,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:48,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:48,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957672975] [2024-06-04 16:01:48,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957672975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:48,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:48,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:01:48,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258974080] [2024-06-04 16:01:48,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:48,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:01:48,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:48,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:01:48,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:01:48,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 16:01:48,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 642 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:48,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:48,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 16:01:48,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:48,722 INFO L124 PetriNetUnfolderBase]: 243/437 cut-off events. [2024-06-04 16:01:48,722 INFO L125 PetriNetUnfolderBase]: For 7076/7078 co-relation queries the response was YES. [2024-06-04 16:01:48,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 437 events. 243/437 cut-off events. For 7076/7078 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1606 event pairs, 59 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2459. Up to 349 conditions per place. [2024-06-04 16:01:48,726 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 29 changer transitions 0/86 dead transitions. [2024-06-04 16:01:48,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 900 flow [2024-06-04 16:01:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-04 16:01:48,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-04 16:01:48,727 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 642 flow. Second operand 7 states and 93 transitions. [2024-06-04 16:01:48,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 900 flow [2024-06-04 16:01:48,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 850 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 16:01:48,737 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 687 flow [2024-06-04 16:01:48,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=687, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-06-04 16:01:48,737 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-04 16:01:48,737 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 687 flow [2024-06-04 16:01:48,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:48,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:48,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:48,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 16:01:48,738 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:48,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:48,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1354391970, now seen corresponding path program 1 times [2024-06-04 16:01:48,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:48,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859408445] [2024-06-04 16:01:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:48,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:53,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:53,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859408445] [2024-06-04 16:01:53,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859408445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:53,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:53,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:01:53,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336545857] [2024-06-04 16:01:53,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:53,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:01:53,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:53,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:01:53,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:01:53,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:53,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 687 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:53,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:53,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:53,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:53,924 INFO L124 PetriNetUnfolderBase]: 241/432 cut-off events. [2024-06-04 16:01:53,924 INFO L125 PetriNetUnfolderBase]: For 7586/7586 co-relation queries the response was YES. [2024-06-04 16:01:53,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 432 events. 241/432 cut-off events. For 7586/7586 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1578 event pairs, 47 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2495. Up to 408 conditions per place. [2024-06-04 16:01:53,927 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-04 16:01:53,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 896 flow [2024-06-04 16:01:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:01:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:01:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-04 16:01:53,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-04 16:01:53,928 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 687 flow. Second operand 9 states and 88 transitions. [2024-06-04 16:01:53,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 896 flow [2024-06-04 16:01:53,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 88 transitions, 817 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 16:01:53,936 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 659 flow [2024-06-04 16:01:53,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=659, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-06-04 16:01:53,936 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-04 16:01:53,937 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 659 flow [2024-06-04 16:01:53,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:53,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:53,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:53,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 16:01:53,937 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:53,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:53,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2110958390, now seen corresponding path program 1 times [2024-06-04 16:01:53,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:53,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464993020] [2024-06-04 16:01:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:01:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:01:57,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:01:57,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464993020] [2024-06-04 16:01:57,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464993020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:01:57,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:01:57,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:01:57,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540722924] [2024-06-04 16:01:57,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:01:57,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:01:57,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:01:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:01:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:01:57,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:01:57,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 659 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:57,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:01:57,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:01:57,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:01:57,479 INFO L124 PetriNetUnfolderBase]: 245/440 cut-off events. [2024-06-04 16:01:57,480 INFO L125 PetriNetUnfolderBase]: For 8263/8263 co-relation queries the response was YES. [2024-06-04 16:01:57,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2562 conditions, 440 events. 245/440 cut-off events. For 8263/8263 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1638 event pairs, 26 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2514. Up to 338 conditions per place. [2024-06-04 16:01:57,483 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 73 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2024-06-04 16:01:57,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 92 transitions, 918 flow [2024-06-04 16:01:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:01:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:01:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 16:01:57,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-04 16:01:57,484 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 659 flow. Second operand 7 states and 79 transitions. [2024-06-04 16:01:57,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 92 transitions, 918 flow [2024-06-04 16:01:57,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 883 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 16:01:57,491 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 668 flow [2024-06-04 16:01:57,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=668, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-04 16:01:57,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-04 16:01:57,492 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 668 flow [2024-06-04 16:01:57,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:01:57,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:01:57,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:01:57,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 16:01:57,492 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:01:57,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:01:57,493 INFO L85 PathProgramCache]: Analyzing trace with hash 743805852, now seen corresponding path program 1 times [2024-06-04 16:01:57,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:01:57,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220482915] [2024-06-04 16:01:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:01:57,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:01:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:00,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:00,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220482915] [2024-06-04 16:02:00,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220482915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:00,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:00,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:02:00,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653521991] [2024-06-04 16:02:00,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:00,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:02:00,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:02:00,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:02:00,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:00,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 668 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:00,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:00,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:00,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:00,570 INFO L124 PetriNetUnfolderBase]: 243/437 cut-off events. [2024-06-04 16:02:00,570 INFO L125 PetriNetUnfolderBase]: For 8503/8503 co-relation queries the response was YES. [2024-06-04 16:02:00,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 437 events. 243/437 cut-off events. For 8503/8503 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1624 event pairs, 43 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2525. Up to 364 conditions per place. [2024-06-04 16:02:00,573 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 22 changer transitions 0/90 dead transitions. [2024-06-04 16:02:00,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 875 flow [2024-06-04 16:02:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:02:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:02:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-04 16:02:00,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-04 16:02:00,575 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 668 flow. Second operand 7 states and 83 transitions. [2024-06-04 16:02:00,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 875 flow [2024-06-04 16:02:00,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 843 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 16:02:00,582 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 689 flow [2024-06-04 16:02:00,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=689, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-04 16:02:00,583 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-04 16:02:00,583 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 689 flow [2024-06-04 16:02:00,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:00,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:00,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:00,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 16:02:00,584 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1709552616, now seen corresponding path program 2 times [2024-06-04 16:02:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073973807] [2024-06-04 16:02:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:03,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:03,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073973807] [2024-06-04 16:02:03,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073973807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:03,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:03,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:02:03,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665592511] [2024-06-04 16:02:03,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:03,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:02:03,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:03,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:02:03,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:02:03,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:03,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 689 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:03,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:03,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:03,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:04,080 INFO L124 PetriNetUnfolderBase]: 240/432 cut-off events. [2024-06-04 16:02:04,080 INFO L125 PetriNetUnfolderBase]: For 8957/8957 co-relation queries the response was YES. [2024-06-04 16:02:04,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 432 events. 240/432 cut-off events. For 8957/8957 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1592 event pairs, 44 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 2515. Up to 365 conditions per place. [2024-06-04 16:02:04,083 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 70 selfloop transitions, 18 changer transitions 0/90 dead transitions. [2024-06-04 16:02:04,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 90 transitions, 892 flow [2024-06-04 16:02:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:02:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:02:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 16:02:04,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-04 16:02:04,084 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 689 flow. Second operand 7 states and 81 transitions. [2024-06-04 16:02:04,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 90 transitions, 892 flow [2024-06-04 16:02:04,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 826 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 16:02:04,093 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 663 flow [2024-06-04 16:02:04,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=663, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-04 16:02:04,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-04 16:02:04,094 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 663 flow [2024-06-04 16:02:04,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:04,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:04,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:04,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 16:02:04,095 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:04,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:04,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1827640420, now seen corresponding path program 2 times [2024-06-04 16:02:04,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:04,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503255797] [2024-06-04 16:02:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:04,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:06,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:06,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503255797] [2024-06-04 16:02:06,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503255797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:06,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:06,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:02:06,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23614325] [2024-06-04 16:02:06,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:06,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:02:06,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:02:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:02:06,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:06,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 663 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:06,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:06,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:06,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:07,179 INFO L124 PetriNetUnfolderBase]: 238/429 cut-off events. [2024-06-04 16:02:07,179 INFO L125 PetriNetUnfolderBase]: For 9027/9027 co-relation queries the response was YES. [2024-06-04 16:02:07,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2499 conditions, 429 events. 238/429 cut-off events. For 9027/9027 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1571 event pairs, 44 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2449. Up to 359 conditions per place. [2024-06-04 16:02:07,182 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2024-06-04 16:02:07,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 887 flow [2024-06-04 16:02:07,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:02:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:02:07,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-04 16:02:07,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-04 16:02:07,183 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 663 flow. Second operand 7 states and 85 transitions. [2024-06-04 16:02:07,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 887 flow [2024-06-04 16:02:07,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 843 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 16:02:07,193 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 671 flow [2024-06-04 16:02:07,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=671, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-04 16:02:07,193 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-04 16:02:07,193 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 671 flow [2024-06-04 16:02:07,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:07,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:07,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:07,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 16:02:07,194 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:07,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:07,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1827824746, now seen corresponding path program 1 times [2024-06-04 16:02:07,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:07,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792597351] [2024-06-04 16:02:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:07,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:10,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:10,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792597351] [2024-06-04 16:02:10,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792597351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:10,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:10,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:02:10,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360585238] [2024-06-04 16:02:10,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:10,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:02:10,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:02:10,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:02:10,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:10,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 671 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:10,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:10,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:10,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:10,500 INFO L124 PetriNetUnfolderBase]: 254/456 cut-off events. [2024-06-04 16:02:10,501 INFO L125 PetriNetUnfolderBase]: For 10784/10784 co-relation queries the response was YES. [2024-06-04 16:02:10,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2724 conditions, 456 events. 254/456 cut-off events. For 10784/10784 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1704 event pairs, 48 based on Foata normal form. 2/458 useless extension candidates. Maximal degree in co-relation 2673. Up to 331 conditions per place. [2024-06-04 16:02:10,505 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 31 changer transitions 0/98 dead transitions. [2024-06-04 16:02:10,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 98 transitions, 1008 flow [2024-06-04 16:02:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:02:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:02:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 16:02:10,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 16:02:10,507 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 671 flow. Second operand 8 states and 93 transitions. [2024-06-04 16:02:10,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 98 transitions, 1008 flow [2024-06-04 16:02:10,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 906 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 16:02:10,521 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 689 flow [2024-06-04 16:02:10,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-06-04 16:02:10,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-04 16:02:10,523 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 689 flow [2024-06-04 16:02:10,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:10,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:10,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:10,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 16:02:10,524 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:10,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1992805300, now seen corresponding path program 2 times [2024-06-04 16:02:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:10,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483530532] [2024-06-04 16:02:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:10,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:13,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:13,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483530532] [2024-06-04 16:02:13,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483530532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:13,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:13,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:02:13,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275548277] [2024-06-04 16:02:13,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:13,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:02:13,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:13,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:02:13,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:02:13,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:13,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 689 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:13,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:13,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:13,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:14,009 INFO L124 PetriNetUnfolderBase]: 260/466 cut-off events. [2024-06-04 16:02:14,009 INFO L125 PetriNetUnfolderBase]: For 11672/11672 co-relation queries the response was YES. [2024-06-04 16:02:14,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 466 events. 260/466 cut-off events. For 11672/11672 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1755 event pairs, 53 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 2748. Up to 390 conditions per place. [2024-06-04 16:02:14,012 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 23 changer transitions 0/101 dead transitions. [2024-06-04 16:02:14,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 101 transitions, 965 flow [2024-06-04 16:02:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:02:14,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:02:14,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 16:02:14,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 16:02:14,014 INFO L175 Difference]: Start difference. First operand has 97 places, 84 transitions, 689 flow. Second operand 8 states and 93 transitions. [2024-06-04 16:02:14,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 101 transitions, 965 flow [2024-06-04 16:02:14,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 911 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 16:02:14,025 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 718 flow [2024-06-04 16:02:14,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=718, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2024-06-04 16:02:14,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-04 16:02:14,026 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 718 flow [2024-06-04 16:02:14,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:14,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:14,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:14,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 16:02:14,027 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:14,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:14,027 INFO L85 PathProgramCache]: Analyzing trace with hash 859396916, now seen corresponding path program 1 times [2024-06-04 16:02:14,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:14,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893019269] [2024-06-04 16:02:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:14,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893019269] [2024-06-04 16:02:18,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893019269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:18,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:18,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:02:18,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949068744] [2024-06-04 16:02:18,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:02:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:02:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:02:18,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:18,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 718 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:18,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:18,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:18,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:19,019 INFO L124 PetriNetUnfolderBase]: 269/481 cut-off events. [2024-06-04 16:02:19,019 INFO L125 PetriNetUnfolderBase]: For 12839/12839 co-relation queries the response was YES. [2024-06-04 16:02:19,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 481 events. 269/481 cut-off events. For 12839/12839 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1849 event pairs, 52 based on Foata normal form. 3/484 useless extension candidates. Maximal degree in co-relation 2866. Up to 388 conditions per place. [2024-06-04 16:02:19,026 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 74 selfloop transitions, 27 changer transitions 0/103 dead transitions. [2024-06-04 16:02:19,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 1005 flow [2024-06-04 16:02:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:02:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:02:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 16:02:19,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 16:02:19,028 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 718 flow. Second operand 9 states and 102 transitions. [2024-06-04 16:02:19,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 1005 flow [2024-06-04 16:02:19,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 103 transitions, 944 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 16:02:19,045 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 761 flow [2024-06-04 16:02:19,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=761, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2024-06-04 16:02:19,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-04 16:02:19,051 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 761 flow [2024-06-04 16:02:19,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:19,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:19,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 16:02:19,052 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:19,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash -809858954, now seen corresponding path program 3 times [2024-06-04 16:02:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:19,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767575049] [2024-06-04 16:02:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:19,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:22,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:22,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767575049] [2024-06-04 16:02:22,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767575049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:22,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:22,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:02:22,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816015665] [2024-06-04 16:02:22,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:22,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:02:22,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:22,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:02:22,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:02:22,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:22,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 761 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:22,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:22,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:22,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:22,731 INFO L124 PetriNetUnfolderBase]: 265/475 cut-off events. [2024-06-04 16:02:22,731 INFO L125 PetriNetUnfolderBase]: For 12312/12312 co-relation queries the response was YES. [2024-06-04 16:02:22,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 475 events. 265/475 cut-off events. For 12312/12312 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1805 event pairs, 46 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2847. Up to 379 conditions per place. [2024-06-04 16:02:22,734 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 74 selfloop transitions, 26 changer transitions 0/102 dead transitions. [2024-06-04 16:02:22,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 102 transitions, 1006 flow [2024-06-04 16:02:22,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:02:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:02:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 16:02:22,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-04 16:02:22,736 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 761 flow. Second operand 8 states and 91 transitions. [2024-06-04 16:02:22,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 102 transitions, 1006 flow [2024-06-04 16:02:22,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 912 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 16:02:22,758 INFO L231 Difference]: Finished difference. Result has 105 places, 89 transitions, 724 flow [2024-06-04 16:02:22,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2024-06-04 16:02:22,759 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-04 16:02:22,759 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 724 flow [2024-06-04 16:02:22,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:22,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:22,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:22,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 16:02:22,760 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:22,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash 165900496, now seen corresponding path program 2 times [2024-06-04 16:02:22,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:22,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119737387] [2024-06-04 16:02:22,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:27,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:27,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119737387] [2024-06-04 16:02:27,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119737387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:27,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:27,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:02:27,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581213785] [2024-06-04 16:02:27,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:27,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:02:27,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:02:27,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:02:27,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:27,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 724 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:27,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:27,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:27,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:27,777 INFO L124 PetriNetUnfolderBase]: 268/481 cut-off events. [2024-06-04 16:02:27,778 INFO L125 PetriNetUnfolderBase]: For 12924/12926 co-relation queries the response was YES. [2024-06-04 16:02:27,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 481 events. 268/481 cut-off events. For 12924/12926 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1827 event pairs, 61 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2864. Up to 409 conditions per place. [2024-06-04 16:02:27,781 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 73 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2024-06-04 16:02:27,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 964 flow [2024-06-04 16:02:27,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:02:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:02:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 16:02:27,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-04 16:02:27,782 INFO L175 Difference]: Start difference. First operand has 105 places, 89 transitions, 724 flow. Second operand 9 states and 95 transitions. [2024-06-04 16:02:27,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 964 flow [2024-06-04 16:02:27,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 99 transitions, 892 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 16:02:27,796 INFO L231 Difference]: Finished difference. Result has 107 places, 91 transitions, 737 flow [2024-06-04 16:02:27,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=737, PETRI_PLACES=107, PETRI_TRANSITIONS=91} [2024-06-04 16:02:27,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-04 16:02:27,797 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 737 flow [2024-06-04 16:02:27,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:27,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:27,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:27,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 16:02:27,798 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:27,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:27,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1301430390, now seen corresponding path program 4 times [2024-06-04 16:02:27,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:27,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292997823] [2024-06-04 16:02:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:27,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:30,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:30,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292997823] [2024-06-04 16:02:30,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292997823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:30,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:30,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:02:30,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956597985] [2024-06-04 16:02:30,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:30,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:02:30,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:30,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:02:30,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:02:30,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:30,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 91 transitions, 737 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:30,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:30,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:30,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:31,223 INFO L124 PetriNetUnfolderBase]: 274/491 cut-off events. [2024-06-04 16:02:31,223 INFO L125 PetriNetUnfolderBase]: For 14275/14277 co-relation queries the response was YES. [2024-06-04 16:02:31,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 491 events. 274/491 cut-off events. For 14275/14277 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1907 event pairs, 58 based on Foata normal form. 2/493 useless extension candidates. Maximal degree in co-relation 2935. Up to 376 conditions per place. [2024-06-04 16:02:31,226 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 30 changer transitions 0/103 dead transitions. [2024-06-04 16:02:31,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 1003 flow [2024-06-04 16:02:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:02:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:02:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 16:02:31,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-04 16:02:31,227 INFO L175 Difference]: Start difference. First operand has 107 places, 91 transitions, 737 flow. Second operand 8 states and 89 transitions. [2024-06-04 16:02:31,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 1003 flow [2024-06-04 16:02:31,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 934 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 16:02:31,243 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 767 flow [2024-06-04 16:02:31,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=767, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-06-04 16:02:31,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-04 16:02:31,243 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 767 flow [2024-06-04 16:02:31,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:31,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:31,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:31,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 16:02:31,244 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:31,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash -686123278, now seen corresponding path program 3 times [2024-06-04 16:02:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:31,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681345943] [2024-06-04 16:02:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:31,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:35,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:35,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681345943] [2024-06-04 16:02:35,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681345943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:35,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:35,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:02:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385163936] [2024-06-04 16:02:35,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:35,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:02:35,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:35,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:02:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:02:35,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:35,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 767 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:35,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:35,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:35,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:36,320 INFO L124 PetriNetUnfolderBase]: 277/496 cut-off events. [2024-06-04 16:02:36,320 INFO L125 PetriNetUnfolderBase]: For 14739/14741 co-relation queries the response was YES. [2024-06-04 16:02:36,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 496 events. 277/496 cut-off events. For 14739/14741 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1912 event pairs, 59 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 3036. Up to 406 conditions per place. [2024-06-04 16:02:36,323 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 70 selfloop transitions, 32 changer transitions 0/104 dead transitions. [2024-06-04 16:02:36,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 104 transitions, 1027 flow [2024-06-04 16:02:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:02:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:02:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 16:02:36,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 16:02:36,325 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 767 flow. Second operand 9 states and 98 transitions. [2024-06-04 16:02:36,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 104 transitions, 1027 flow [2024-06-04 16:02:36,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 104 transitions, 944 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 16:02:36,342 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 789 flow [2024-06-04 16:02:36,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=789, PETRI_PLACES=111, PETRI_TRANSITIONS=95} [2024-06-04 16:02:36,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-04 16:02:36,343 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 789 flow [2024-06-04 16:02:36,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:36,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:36,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:36,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 16:02:36,344 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:36,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:36,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1309711110, now seen corresponding path program 5 times [2024-06-04 16:02:36,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:36,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834522567] [2024-06-04 16:02:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:36,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:39,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834522567] [2024-06-04 16:02:39,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834522567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:39,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:39,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:02:39,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178044274] [2024-06-04 16:02:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:39,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:02:39,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:39,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:02:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:02:39,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:39,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 95 transitions, 789 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:39,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:39,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:39,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:39,468 INFO L124 PetriNetUnfolderBase]: 283/504 cut-off events. [2024-06-04 16:02:39,468 INFO L125 PetriNetUnfolderBase]: For 16109/16109 co-relation queries the response was YES. [2024-06-04 16:02:39,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 504 events. 283/504 cut-off events. For 16109/16109 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1961 event pairs, 50 based on Foata normal form. 2/506 useless extension candidates. Maximal degree in co-relation 3123. Up to 477 conditions per place. [2024-06-04 16:02:39,471 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 91 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2024-06-04 16:02:39,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 106 transitions, 1058 flow [2024-06-04 16:02:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:02:39,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:02:39,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-04 16:02:39,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-04 16:02:39,472 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 789 flow. Second operand 8 states and 82 transitions. [2024-06-04 16:02:39,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 106 transitions, 1058 flow [2024-06-04 16:02:39,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 106 transitions, 969 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 16:02:39,488 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 769 flow [2024-06-04 16:02:39,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=769, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-04 16:02:39,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-04 16:02:39,488 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 769 flow [2024-06-04 16:02:39,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:39,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:39,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:39,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 16:02:39,489 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:39,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash -456204028, now seen corresponding path program 4 times [2024-06-04 16:02:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:39,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469131179] [2024-06-04 16:02:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:39,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:43,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:43,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469131179] [2024-06-04 16:02:43,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469131179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:43,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:43,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:02:43,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492930713] [2024-06-04 16:02:43,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:43,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:02:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:02:43,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:02:43,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:43,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 769 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:43,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:43,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:43,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:43,554 INFO L124 PetriNetUnfolderBase]: 296/525 cut-off events. [2024-06-04 16:02:43,554 INFO L125 PetriNetUnfolderBase]: For 17719/17719 co-relation queries the response was YES. [2024-06-04 16:02:43,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3392 conditions, 525 events. 296/525 cut-off events. For 17719/17719 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2047 event pairs, 49 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 3334. Up to 480 conditions per place. [2024-06-04 16:02:43,559 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-06-04 16:02:43,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 115 transitions, 1260 flow [2024-06-04 16:02:43,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:02:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:02:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 16:02:43,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-04 16:02:43,560 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 769 flow. Second operand 9 states and 95 transitions. [2024-06-04 16:02:43,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 115 transitions, 1260 flow [2024-06-04 16:02:43,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 1207 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 16:02:43,588 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 875 flow [2024-06-04 16:02:43,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=875, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-04 16:02:43,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-04 16:02:43,589 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 875 flow [2024-06-04 16:02:43,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:43,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:43,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:43,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 16:02:43,589 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:43,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:43,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1310008028, now seen corresponding path program 5 times [2024-06-04 16:02:43,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:43,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896951470] [2024-06-04 16:02:43,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:43,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:47,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:47,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896951470] [2024-06-04 16:02:47,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896951470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:47,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:47,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:02:47,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054531847] [2024-06-04 16:02:47,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:47,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:02:47,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:47,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:02:47,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:02:47,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:47,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 875 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:47,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:47,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:47,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:48,250 INFO L124 PetriNetUnfolderBase]: 297/527 cut-off events. [2024-06-04 16:02:48,250 INFO L125 PetriNetUnfolderBase]: For 18595/18595 co-relation queries the response was YES. [2024-06-04 16:02:48,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 527 events. 297/527 cut-off events. For 18595/18595 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2060 event pairs, 49 based on Foata normal form. 2/529 useless extension candidates. Maximal degree in co-relation 3366. Up to 493 conditions per place. [2024-06-04 16:02:48,255 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 96 selfloop transitions, 18 changer transitions 0/116 dead transitions. [2024-06-04 16:02:48,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 116 transitions, 1230 flow [2024-06-04 16:02:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:02:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:02:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-04 16:02:48,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-04 16:02:48,257 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 875 flow. Second operand 9 states and 92 transitions. [2024-06-04 16:02:48,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 116 transitions, 1230 flow [2024-06-04 16:02:48,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 116 transitions, 1151 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-04 16:02:48,289 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 884 flow [2024-06-04 16:02:48,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=884, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2024-06-04 16:02:48,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-04 16:02:48,290 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 884 flow [2024-06-04 16:02:48,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:48,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:48,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:48,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 16:02:48,291 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:48,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1301436900, now seen corresponding path program 6 times [2024-06-04 16:02:48,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:48,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523526779] [2024-06-04 16:02:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:48,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:51,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:51,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523526779] [2024-06-04 16:02:51,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523526779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:51,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:51,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:02:51,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624110860] [2024-06-04 16:02:51,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:51,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:02:51,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:02:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:02:51,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:51,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 884 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:51,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:51,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:51,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:51,817 INFO L124 PetriNetUnfolderBase]: 298/531 cut-off events. [2024-06-04 16:02:51,818 INFO L125 PetriNetUnfolderBase]: For 19259/19261 co-relation queries the response was YES. [2024-06-04 16:02:51,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3421 conditions, 531 events. 298/531 cut-off events. For 19259/19261 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2109 event pairs, 58 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 3359. Up to 407 conditions per place. [2024-06-04 16:02:51,821 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 84 selfloop transitions, 33 changer transitions 0/119 dead transitions. [2024-06-04 16:02:51,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 119 transitions, 1196 flow [2024-06-04 16:02:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:02:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:02:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 16:02:51,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 16:02:51,828 INFO L175 Difference]: Start difference. First operand has 121 places, 106 transitions, 884 flow. Second operand 8 states and 92 transitions. [2024-06-04 16:02:51,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 119 transitions, 1196 flow [2024-06-04 16:02:51,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 1162 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 16:02:51,860 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 963 flow [2024-06-04 16:02:51,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=963, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2024-06-04 16:02:51,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-04 16:02:51,861 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 963 flow [2024-06-04 16:02:51,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:51,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:51,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:51,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 16:02:51,861 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:51,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:51,862 INFO L85 PathProgramCache]: Analyzing trace with hash -455896446, now seen corresponding path program 1 times [2024-06-04 16:02:51,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:51,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054177787] [2024-06-04 16:02:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:51,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:02:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:02:56,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:02:56,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054177787] [2024-06-04 16:02:56,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054177787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:02:56,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:02:56,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:02:56,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249982533] [2024-06-04 16:02:56,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:02:56,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:02:56,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:02:56,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:02:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:02:56,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:02:56,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 963 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:56,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:02:56,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:02:56,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:02:57,293 INFO L124 PetriNetUnfolderBase]: 295/524 cut-off events. [2024-06-04 16:02:57,293 INFO L125 PetriNetUnfolderBase]: For 19140/19140 co-relation queries the response was YES. [2024-06-04 16:02:57,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3424 conditions, 524 events. 295/524 cut-off events. For 19140/19140 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2025 event pairs, 48 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 3361. Up to 494 conditions per place. [2024-06-04 16:02:57,297 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 102 selfloop transitions, 15 changer transitions 0/119 dead transitions. [2024-06-04 16:02:57,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 119 transitions, 1224 flow [2024-06-04 16:02:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:02:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:02:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-04 16:02:57,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-04 16:02:57,299 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 963 flow. Second operand 10 states and 95 transitions. [2024-06-04 16:02:57,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 119 transitions, 1224 flow [2024-06-04 16:02:57,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 119 transitions, 1127 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 16:02:57,327 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 900 flow [2024-06-04 16:02:57,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=900, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2024-06-04 16:02:57,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-04 16:02:57,327 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 900 flow [2024-06-04 16:02:57,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:02:57,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:02:57,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:02:57,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 16:02:57,328 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:02:57,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:02:57,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1015199108, now seen corresponding path program 1 times [2024-06-04 16:02:57,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:02:57,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37941012] [2024-06-04 16:02:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:02:57,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:02:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:00,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:00,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37941012] [2024-06-04 16:03:00,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37941012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:00,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:00,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:00,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785132045] [2024-06-04 16:03:00,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:00,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:00,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:00,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:00,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:00,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:00,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:00,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:00,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:00,457 INFO L124 PetriNetUnfolderBase]: 299/532 cut-off events. [2024-06-04 16:03:00,457 INFO L125 PetriNetUnfolderBase]: For 19685/19685 co-relation queries the response was YES. [2024-06-04 16:03:00,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3397 conditions, 532 events. 299/532 cut-off events. For 19685/19685 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2092 event pairs, 27 based on Foata normal form. 2/534 useless extension candidates. Maximal degree in co-relation 3333. Up to 425 conditions per place. [2024-06-04 16:03:00,460 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 102 selfloop transitions, 18 changer transitions 0/122 dead transitions. [2024-06-04 16:03:00,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 122 transitions, 1187 flow [2024-06-04 16:03:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:03:00,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:03:00,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-04 16:03:00,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 16:03:00,462 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 900 flow. Second operand 8 states and 86 transitions. [2024-06-04 16:03:00,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 122 transitions, 1187 flow [2024-06-04 16:03:00,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 122 transitions, 1143 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 16:03:00,486 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 912 flow [2024-06-04 16:03:00,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=912, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-06-04 16:03:00,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-04 16:03:00,487 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 912 flow [2024-06-04 16:03:00,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:00,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:00,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:00,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 16:03:00,487 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:00,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:00,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1013321283, now seen corresponding path program 1 times [2024-06-04 16:03:00,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:00,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978316647] [2024-06-04 16:03:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:00,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:03,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:03,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978316647] [2024-06-04 16:03:03,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978316647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:03,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:03,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483639211] [2024-06-04 16:03:03,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:03,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:03,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:03,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:03,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:03,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:03,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 912 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:03,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:03,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:03,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:03,847 INFO L124 PetriNetUnfolderBase]: 302/537 cut-off events. [2024-06-04 16:03:03,847 INFO L125 PetriNetUnfolderBase]: For 20073/20073 co-relation queries the response was YES. [2024-06-04 16:03:03,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3469 conditions, 537 events. 302/537 cut-off events. For 20073/20073 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2121 event pairs, 44 based on Foata normal form. 1/538 useless extension candidates. Maximal degree in co-relation 3405. Up to 450 conditions per place. [2024-06-04 16:03:03,851 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 94 selfloop transitions, 27 changer transitions 0/123 dead transitions. [2024-06-04 16:03:03,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 1235 flow [2024-06-04 16:03:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:03:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:03:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 16:03:03,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 16:03:03,860 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 912 flow. Second operand 8 states and 93 transitions. [2024-06-04 16:03:03,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 1235 flow [2024-06-04 16:03:03,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 1189 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 16:03:03,900 INFO L231 Difference]: Finished difference. Result has 127 places, 111 transitions, 975 flow [2024-06-04 16:03:03,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=975, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2024-06-04 16:03:03,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-04 16:03:03,902 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 975 flow [2024-06-04 16:03:03,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:03,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:03,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:03,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 16:03:03,903 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:03,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1456525086, now seen corresponding path program 2 times [2024-06-04 16:03:03,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:03,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078058703] [2024-06-04 16:03:03,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:03,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:06,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:06,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078058703] [2024-06-04 16:03:06,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078058703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:06,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:06,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:06,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491486647] [2024-06-04 16:03:06,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:06,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:06,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:06,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:06,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 975 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:06,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:06,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:06,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:07,083 INFO L124 PetriNetUnfolderBase]: 306/545 cut-off events. [2024-06-04 16:03:07,083 INFO L125 PetriNetUnfolderBase]: For 22291/22291 co-relation queries the response was YES. [2024-06-04 16:03:07,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3574 conditions, 545 events. 306/545 cut-off events. For 22291/22291 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2157 event pairs, 46 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3509. Up to 470 conditions per place. [2024-06-04 16:03:07,087 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 103 selfloop transitions, 19 changer transitions 0/124 dead transitions. [2024-06-04 16:03:07,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 124 transitions, 1266 flow [2024-06-04 16:03:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:03:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:03:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 16:03:07,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-04 16:03:07,093 INFO L175 Difference]: Start difference. First operand has 127 places, 111 transitions, 975 flow. Second operand 8 states and 89 transitions. [2024-06-04 16:03:07,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 124 transitions, 1266 flow [2024-06-04 16:03:07,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 124 transitions, 1189 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 16:03:07,137 INFO L231 Difference]: Finished difference. Result has 129 places, 112 transitions, 958 flow [2024-06-04 16:03:07,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=958, PETRI_PLACES=129, PETRI_TRANSITIONS=112} [2024-06-04 16:03:07,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-04 16:03:07,139 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 112 transitions, 958 flow [2024-06-04 16:03:07,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:07,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:07,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:07,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 16:03:07,140 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:07,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:07,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1500029460, now seen corresponding path program 3 times [2024-06-04 16:03:07,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:07,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542795619] [2024-06-04 16:03:07,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:07,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:09,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:09,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542795619] [2024-06-04 16:03:09,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542795619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:09,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:09,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:09,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176563262] [2024-06-04 16:03:09,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:09,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:09,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:10,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:10,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 112 transitions, 958 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:10,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:10,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:10,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:10,402 INFO L124 PetriNetUnfolderBase]: 310/553 cut-off events. [2024-06-04 16:03:10,402 INFO L125 PetriNetUnfolderBase]: For 23631/23631 co-relation queries the response was YES. [2024-06-04 16:03:10,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 553 events. 310/553 cut-off events. For 23631/23631 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2227 event pairs, 46 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 3551. Up to 472 conditions per place. [2024-06-04 16:03:10,406 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 100 selfloop transitions, 23 changer transitions 0/125 dead transitions. [2024-06-04 16:03:10,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 125 transitions, 1257 flow [2024-06-04 16:03:10,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:03:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:03:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 16:03:10,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-04 16:03:10,409 INFO L175 Difference]: Start difference. First operand has 129 places, 112 transitions, 958 flow. Second operand 8 states and 91 transitions. [2024-06-04 16:03:10,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 125 transitions, 1257 flow [2024-06-04 16:03:10,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 125 transitions, 1207 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 16:03:10,455 INFO L231 Difference]: Finished difference. Result has 131 places, 113 transitions, 979 flow [2024-06-04 16:03:10,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=979, PETRI_PLACES=131, PETRI_TRANSITIONS=113} [2024-06-04 16:03:10,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-04 16:03:10,455 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 113 transitions, 979 flow [2024-06-04 16:03:10,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:10,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:10,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:10,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 16:03:10,456 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:10,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:10,457 INFO L85 PathProgramCache]: Analyzing trace with hash 822275870, now seen corresponding path program 4 times [2024-06-04 16:03:10,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:10,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982068903] [2024-06-04 16:03:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:10,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:13,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:13,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982068903] [2024-06-04 16:03:13,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982068903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:13,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:13,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:13,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056965331] [2024-06-04 16:03:13,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:13,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:13,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:13,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:13,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:13,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:13,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 113 transitions, 979 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:13,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:13,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:13,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:13,658 INFO L124 PetriNetUnfolderBase]: 314/561 cut-off events. [2024-06-04 16:03:13,658 INFO L125 PetriNetUnfolderBase]: For 24867/24867 co-relation queries the response was YES. [2024-06-04 16:03:13,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3692 conditions, 561 events. 314/561 cut-off events. For 24867/24867 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2281 event pairs, 29 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 3625. Up to 468 conditions per place. [2024-06-04 16:03:13,662 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 106 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2024-06-04 16:03:13,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 129 transitions, 1295 flow [2024-06-04 16:03:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:03:13,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:03:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 16:03:13,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 16:03:13,664 INFO L175 Difference]: Start difference. First operand has 131 places, 113 transitions, 979 flow. Second operand 8 states and 92 transitions. [2024-06-04 16:03:13,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 129 transitions, 1295 flow [2024-06-04 16:03:13,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 129 transitions, 1236 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 16:03:13,698 INFO L231 Difference]: Finished difference. Result has 133 places, 114 transitions, 988 flow [2024-06-04 16:03:13,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=988, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2024-06-04 16:03:13,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-04 16:03:13,699 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 988 flow [2024-06-04 16:03:13,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:13,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:13,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:13,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 16:03:13,700 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:13,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1647570654, now seen corresponding path program 5 times [2024-06-04 16:03:13,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:13,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415023673] [2024-06-04 16:03:13,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:13,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:16,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:16,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415023673] [2024-06-04 16:03:16,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415023673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:16,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310288356] [2024-06-04 16:03:16,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:16,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:16,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:16,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 988 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:16,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:16,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:16,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:16,920 INFO L124 PetriNetUnfolderBase]: 318/569 cut-off events. [2024-06-04 16:03:16,920 INFO L125 PetriNetUnfolderBase]: For 26131/26131 co-relation queries the response was YES. [2024-06-04 16:03:16,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3756 conditions, 569 events. 318/569 cut-off events. For 26131/26131 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2326 event pairs, 48 based on Foata normal form. 2/571 useless extension candidates. Maximal degree in co-relation 3688. Up to 491 conditions per place. [2024-06-04 16:03:16,923 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 105 selfloop transitions, 23 changer transitions 0/130 dead transitions. [2024-06-04 16:03:16,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 130 transitions, 1312 flow [2024-06-04 16:03:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:03:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:03:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 16:03:16,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 16:03:16,925 INFO L175 Difference]: Start difference. First operand has 133 places, 114 transitions, 988 flow. Second operand 8 states and 93 transitions. [2024-06-04 16:03:16,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 130 transitions, 1312 flow [2024-06-04 16:03:16,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 1254 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 16:03:16,960 INFO L231 Difference]: Finished difference. Result has 135 places, 115 transitions, 1005 flow [2024-06-04 16:03:16,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1005, PETRI_PLACES=135, PETRI_TRANSITIONS=115} [2024-06-04 16:03:16,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-04 16:03:16,960 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 115 transitions, 1005 flow [2024-06-04 16:03:16,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:16,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:16,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:16,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 16:03:16,961 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:16,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash 658665479, now seen corresponding path program 2 times [2024-06-04 16:03:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:16,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793342440] [2024-06-04 16:03:16,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:16,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:20,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:20,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793342440] [2024-06-04 16:03:20,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793342440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:20,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:20,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:20,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894014260] [2024-06-04 16:03:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:20,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:20,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:20,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:20,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 115 transitions, 1005 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:20,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:20,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:20,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:20,800 INFO L124 PetriNetUnfolderBase]: 316/566 cut-off events. [2024-06-04 16:03:20,800 INFO L125 PetriNetUnfolderBase]: For 25401/25401 co-relation queries the response was YES. [2024-06-04 16:03:20,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3693 conditions, 566 events. 316/566 cut-off events. For 25401/25401 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2317 event pairs, 48 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 3624. Up to 485 conditions per place. [2024-06-04 16:03:20,804 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 26 changer transitions 0/132 dead transitions. [2024-06-04 16:03:20,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 132 transitions, 1361 flow [2024-06-04 16:03:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:03:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:03:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 16:03:20,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 16:03:20,805 INFO L175 Difference]: Start difference. First operand has 135 places, 115 transitions, 1005 flow. Second operand 8 states and 94 transitions. [2024-06-04 16:03:20,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 132 transitions, 1361 flow [2024-06-04 16:03:20,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 132 transitions, 1298 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 16:03:20,844 INFO L231 Difference]: Finished difference. Result has 137 places, 117 transitions, 1052 flow [2024-06-04 16:03:20,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1052, PETRI_PLACES=137, PETRI_TRANSITIONS=117} [2024-06-04 16:03:20,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-04 16:03:20,845 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 117 transitions, 1052 flow [2024-06-04 16:03:20,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:20,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:20,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:20,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 16:03:20,846 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:20,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:20,846 INFO L85 PathProgramCache]: Analyzing trace with hash 871286774, now seen corresponding path program 6 times [2024-06-04 16:03:20,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:20,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124377008] [2024-06-04 16:03:20,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:20,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:23,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:23,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124377008] [2024-06-04 16:03:23,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124377008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:23,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:23,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:23,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582932420] [2024-06-04 16:03:23,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:23,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:23,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:23,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:23,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:23,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:23,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 117 transitions, 1052 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:23,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:23,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:23,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:24,234 INFO L124 PetriNetUnfolderBase]: 320/575 cut-off events. [2024-06-04 16:03:24,234 INFO L125 PetriNetUnfolderBase]: For 27660/27660 co-relation queries the response was YES. [2024-06-04 16:03:24,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 575 events. 320/575 cut-off events. For 27660/27660 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2393 event pairs, 48 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 3708. Up to 481 conditions per place. [2024-06-04 16:03:24,237 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 104 selfloop transitions, 25 changer transitions 0/131 dead transitions. [2024-06-04 16:03:24,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 131 transitions, 1375 flow [2024-06-04 16:03:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:03:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:03:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 16:03:24,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 16:03:24,239 INFO L175 Difference]: Start difference. First operand has 137 places, 117 transitions, 1052 flow. Second operand 8 states and 90 transitions. [2024-06-04 16:03:24,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 131 transitions, 1375 flow [2024-06-04 16:03:24,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 131 transitions, 1286 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 16:03:24,278 INFO L231 Difference]: Finished difference. Result has 138 places, 118 transitions, 1043 flow [2024-06-04 16:03:24,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1043, PETRI_PLACES=138, PETRI_TRANSITIONS=118} [2024-06-04 16:03:24,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-04 16:03:24,279 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 118 transitions, 1043 flow [2024-06-04 16:03:24,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:24,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:24,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:24,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 16:03:24,280 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:24,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash 822429692, now seen corresponding path program 1 times [2024-06-04 16:03:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:24,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164337450] [2024-06-04 16:03:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:28,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:28,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164337450] [2024-06-04 16:03:28,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164337450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:28,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:28,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199409373] [2024-06-04 16:03:28,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:28,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:28,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:28,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 118 transitions, 1043 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:28,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:28,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:28,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:28,980 INFO L124 PetriNetUnfolderBase]: 326/585 cut-off events. [2024-06-04 16:03:28,980 INFO L125 PetriNetUnfolderBase]: For 27726/27726 co-relation queries the response was YES. [2024-06-04 16:03:28,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3824 conditions, 585 events. 326/585 cut-off events. For 27726/27726 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2429 event pairs, 54 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3754. Up to 501 conditions per place. [2024-06-04 16:03:28,984 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 110 selfloop transitions, 25 changer transitions 0/137 dead transitions. [2024-06-04 16:03:28,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 137 transitions, 1409 flow [2024-06-04 16:03:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:03:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:03:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 16:03:28,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 16:03:28,985 INFO L175 Difference]: Start difference. First operand has 138 places, 118 transitions, 1043 flow. Second operand 9 states and 102 transitions. [2024-06-04 16:03:28,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 137 transitions, 1409 flow [2024-06-04 16:03:29,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 1339 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 16:03:29,023 INFO L231 Difference]: Finished difference. Result has 141 places, 120 transitions, 1070 flow [2024-06-04 16:03:29,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1070, PETRI_PLACES=141, PETRI_TRANSITIONS=120} [2024-06-04 16:03:29,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-04 16:03:29,023 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 120 transitions, 1070 flow [2024-06-04 16:03:29,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:29,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:29,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:29,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 16:03:29,024 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:29,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:29,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1487244506, now seen corresponding path program 2 times [2024-06-04 16:03:29,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:29,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285423959] [2024-06-04 16:03:29,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:29,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:33,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:33,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285423959] [2024-06-04 16:03:33,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285423959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:33,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:33,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:33,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620552606] [2024-06-04 16:03:33,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:33,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:33,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:33,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:33,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 120 transitions, 1070 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:33,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:33,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:33,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:33,889 INFO L124 PetriNetUnfolderBase]: 332/595 cut-off events. [2024-06-04 16:03:33,889 INFO L125 PetriNetUnfolderBase]: For 28809/28809 co-relation queries the response was YES. [2024-06-04 16:03:33,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3911 conditions, 595 events. 332/595 cut-off events. For 28809/28809 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2503 event pairs, 48 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 3840. Up to 491 conditions per place. [2024-06-04 16:03:33,892 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 107 selfloop transitions, 28 changer transitions 0/137 dead transitions. [2024-06-04 16:03:33,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 137 transitions, 1435 flow [2024-06-04 16:03:33,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:03:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:03:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 16:03:33,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 16:03:33,894 INFO L175 Difference]: Start difference. First operand has 141 places, 120 transitions, 1070 flow. Second operand 9 states and 100 transitions. [2024-06-04 16:03:33,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 137 transitions, 1435 flow [2024-06-04 16:03:33,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 137 transitions, 1354 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 16:03:33,936 INFO L231 Difference]: Finished difference. Result has 143 places, 122 transitions, 1096 flow [2024-06-04 16:03:33,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1096, PETRI_PLACES=143, PETRI_TRANSITIONS=122} [2024-06-04 16:03:33,937 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-04 16:03:33,937 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 122 transitions, 1096 flow [2024-06-04 16:03:33,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:33,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:33,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:33,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 16:03:33,938 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:33,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:33,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1641848643, now seen corresponding path program 1 times [2024-06-04 16:03:33,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:33,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227921204] [2024-06-04 16:03:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:33,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:38,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:38,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227921204] [2024-06-04 16:03:38,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227921204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:38,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:38,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:03:38,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340723447] [2024-06-04 16:03:38,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:38,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:03:38,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:38,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:03:38,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:03:38,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 16:03:38,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 122 transitions, 1096 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:38,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:38,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 16:03:38,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:39,043 INFO L124 PetriNetUnfolderBase]: 341/610 cut-off events. [2024-06-04 16:03:39,043 INFO L125 PetriNetUnfolderBase]: For 31283/31283 co-relation queries the response was YES. [2024-06-04 16:03:39,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4036 conditions, 610 events. 341/610 cut-off events. For 31283/31283 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2573 event pairs, 54 based on Foata normal form. 3/613 useless extension candidates. Maximal degree in co-relation 3964. Up to 506 conditions per place. [2024-06-04 16:03:39,047 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 109 selfloop transitions, 30 changer transitions 0/141 dead transitions. [2024-06-04 16:03:39,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 141 transitions, 1493 flow [2024-06-04 16:03:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:03:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:03:39,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 16:03:39,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 16:03:39,048 INFO L175 Difference]: Start difference. First operand has 143 places, 122 transitions, 1096 flow. Second operand 10 states and 122 transitions. [2024-06-04 16:03:39,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 141 transitions, 1493 flow [2024-06-04 16:03:39,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 141 transitions, 1402 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 16:03:39,092 INFO L231 Difference]: Finished difference. Result has 146 places, 125 transitions, 1141 flow [2024-06-04 16:03:39,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1141, PETRI_PLACES=146, PETRI_TRANSITIONS=125} [2024-06-04 16:03:39,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-04 16:03:39,092 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 125 transitions, 1141 flow [2024-06-04 16:03:39,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:39,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:39,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:39,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 16:03:39,093 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:39,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash 664387056, now seen corresponding path program 3 times [2024-06-04 16:03:39,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:39,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767869414] [2024-06-04 16:03:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:39,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:43,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:43,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767869414] [2024-06-04 16:03:43,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767869414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:43,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:43,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:43,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410540559] [2024-06-04 16:03:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:43,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:43,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:43,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:43,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 125 transitions, 1141 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:43,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:43,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:43,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:44,059 INFO L124 PetriNetUnfolderBase]: 357/636 cut-off events. [2024-06-04 16:03:44,060 INFO L125 PetriNetUnfolderBase]: For 33949/33949 co-relation queries the response was YES. [2024-06-04 16:03:44,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4371 conditions, 636 events. 357/636 cut-off events. For 33949/33949 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2703 event pairs, 46 based on Foata normal form. 2/638 useless extension candidates. Maximal degree in co-relation 4298. Up to 461 conditions per place. [2024-06-04 16:03:44,064 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 44 changer transitions 0/145 dead transitions. [2024-06-04 16:03:44,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 145 transitions, 1672 flow [2024-06-04 16:03:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:03:44,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:03:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 16:03:44,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 16:03:44,065 INFO L175 Difference]: Start difference. First operand has 146 places, 125 transitions, 1141 flow. Second operand 9 states and 103 transitions. [2024-06-04 16:03:44,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 145 transitions, 1672 flow [2024-06-04 16:03:44,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 1558 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 16:03:44,116 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 1221 flow [2024-06-04 16:03:44,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1221, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2024-06-04 16:03:44,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-04 16:03:44,117 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 1221 flow [2024-06-04 16:03:44,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:44,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:44,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:44,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 16:03:44,117 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:44,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1487042696, now seen corresponding path program 4 times [2024-06-04 16:03:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:44,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789063707] [2024-06-04 16:03:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:44,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:48,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:48,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789063707] [2024-06-04 16:03:48,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789063707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:48,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:48,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:48,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677815897] [2024-06-04 16:03:48,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:48,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:48,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:48,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:48,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:48,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:48,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 1221 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:48,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:48,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:48,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:49,344 INFO L124 PetriNetUnfolderBase]: 353/630 cut-off events. [2024-06-04 16:03:49,344 INFO L125 PetriNetUnfolderBase]: For 33002/33002 co-relation queries the response was YES. [2024-06-04 16:03:49,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4272 conditions, 630 events. 353/630 cut-off events. For 33002/33002 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2676 event pairs, 46 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 4198. Up to 458 conditions per place. [2024-06-04 16:03:49,348 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 42 changer transitions 0/144 dead transitions. [2024-06-04 16:03:49,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 1558 flow [2024-06-04 16:03:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:03:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:03:49,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 16:03:49,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 16:03:49,349 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 1221 flow. Second operand 9 states and 103 transitions. [2024-06-04 16:03:49,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 1558 flow [2024-06-04 16:03:49,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1441 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-04 16:03:49,402 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1193 flow [2024-06-04 16:03:49,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1193, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-04 16:03:49,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-04 16:03:49,403 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1193 flow [2024-06-04 16:03:49,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:49,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:49,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:49,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 16:03:49,403 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:49,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash 847949715, now seen corresponding path program 2 times [2024-06-04 16:03:49,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:49,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698218509] [2024-06-04 16:03:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:49,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:54,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:54,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698218509] [2024-06-04 16:03:54,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698218509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:54,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:54,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:03:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121048569] [2024-06-04 16:03:54,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:54,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:03:54,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:54,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:03:54,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:03:54,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 16:03:54,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1193 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:54,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:54,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 16:03:54,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:54,595 INFO L124 PetriNetUnfolderBase]: 356/636 cut-off events. [2024-06-04 16:03:54,595 INFO L125 PetriNetUnfolderBase]: For 32749/32751 co-relation queries the response was YES. [2024-06-04 16:03:54,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4331 conditions, 636 events. 356/636 cut-off events. For 32749/32751 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2699 event pairs, 69 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 4255. Up to 561 conditions per place. [2024-06-04 16:03:54,600 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 112 selfloop transitions, 26 changer transitions 0/140 dead transitions. [2024-06-04 16:03:54,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 140 transitions, 1527 flow [2024-06-04 16:03:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:03:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:03:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 16:03:54,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 16:03:54,601 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1193 flow. Second operand 10 states and 113 transitions. [2024-06-04 16:03:54,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 140 transitions, 1527 flow [2024-06-04 16:03:54,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 140 transitions, 1416 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 16:03:54,657 INFO L231 Difference]: Finished difference. Result has 153 places, 131 transitions, 1181 flow [2024-06-04 16:03:54,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1181, PETRI_PLACES=153, PETRI_TRANSITIONS=131} [2024-06-04 16:03:54,657 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-04 16:03:54,658 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 131 transitions, 1181 flow [2024-06-04 16:03:54,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:54,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:54,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:54,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 16:03:54,658 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:54,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash -461790234, now seen corresponding path program 7 times [2024-06-04 16:03:54,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:54,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152860954] [2024-06-04 16:03:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:54,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:03:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:03:57,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:03:57,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152860954] [2024-06-04 16:03:57,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152860954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:03:57,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:03:57,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:03:57,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622015747] [2024-06-04 16:03:57,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:03:57,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:03:57,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:03:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:03:57,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:03:57,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:03:57,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 131 transitions, 1181 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:57,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:03:57,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:03:57,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:03:58,242 INFO L124 PetriNetUnfolderBase]: 353/631 cut-off events. [2024-06-04 16:03:58,243 INFO L125 PetriNetUnfolderBase]: For 32624/32626 co-relation queries the response was YES. [2024-06-04 16:03:58,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4151 conditions, 631 events. 353/631 cut-off events. For 32624/32626 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2689 event pairs, 57 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 4074. Up to 518 conditions per place. [2024-06-04 16:03:58,247 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 110 selfloop transitions, 29 changer transitions 0/141 dead transitions. [2024-06-04 16:03:58,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 141 transitions, 1489 flow [2024-06-04 16:03:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:03:58,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:03:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 16:03:58,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 16:03:58,249 INFO L175 Difference]: Start difference. First operand has 153 places, 131 transitions, 1181 flow. Second operand 8 states and 88 transitions. [2024-06-04 16:03:58,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 141 transitions, 1489 flow [2024-06-04 16:03:58,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 141 transitions, 1406 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 16:03:58,306 INFO L231 Difference]: Finished difference. Result has 153 places, 131 transitions, 1160 flow [2024-06-04 16:03:58,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1160, PETRI_PLACES=153, PETRI_TRANSITIONS=131} [2024-06-04 16:03:58,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-04 16:03:58,307 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 131 transitions, 1160 flow [2024-06-04 16:03:58,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:03:58,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:03:58,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:03:58,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 16:03:58,307 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:03:58,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:03:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1514131384, now seen corresponding path program 5 times [2024-06-04 16:03:58,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:03:58,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611138604] [2024-06-04 16:03:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:03:58,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:03:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:04,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:04,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611138604] [2024-06-04 16:04:04,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611138604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:04,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:04,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:04:04,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828498229] [2024-06-04 16:04:04,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:04,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:04:04,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:04,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:04:04,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:04:04,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:04,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 131 transitions, 1160 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:04,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:04,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:04,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:04,690 INFO L124 PetriNetUnfolderBase]: 379/673 cut-off events. [2024-06-04 16:04:04,690 INFO L125 PetriNetUnfolderBase]: For 40141/40143 co-relation queries the response was YES. [2024-06-04 16:04:04,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 673 events. 379/673 cut-off events. For 40141/40143 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2906 event pairs, 71 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 4623. Up to 302 conditions per place. [2024-06-04 16:04:04,694 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 58 changer transitions 0/154 dead transitions. [2024-06-04 16:04:04,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 154 transitions, 1922 flow [2024-06-04 16:04:04,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:04:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:04:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 16:04:04,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 16:04:04,697 INFO L175 Difference]: Start difference. First operand has 153 places, 131 transitions, 1160 flow. Second operand 9 states and 109 transitions. [2024-06-04 16:04:04,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 154 transitions, 1922 flow [2024-06-04 16:04:04,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 1817 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 16:04:04,756 INFO L231 Difference]: Finished difference. Result has 156 places, 138 transitions, 1352 flow [2024-06-04 16:04:04,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1352, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2024-06-04 16:04:04,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-04 16:04:04,756 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 1352 flow [2024-06-04 16:04:04,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:04,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:04,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:04,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 16:04:04,757 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:04,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:04,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1513929574, now seen corresponding path program 6 times [2024-06-04 16:04:04,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:04,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211568987] [2024-06-04 16:04:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:04,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:08,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:08,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211568987] [2024-06-04 16:04:08,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211568987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:08,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:08,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:04:08,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555789455] [2024-06-04 16:04:08,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:08,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:04:08,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:04:08,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:04:09,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:09,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 138 transitions, 1352 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:09,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:09,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:09,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:09,398 INFO L124 PetriNetUnfolderBase]: 395/699 cut-off events. [2024-06-04 16:04:09,398 INFO L125 PetriNetUnfolderBase]: For 44948/44950 co-relation queries the response was YES. [2024-06-04 16:04:09,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 699 events. 395/699 cut-off events. For 44948/44950 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3050 event pairs, 60 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 5086. Up to 547 conditions per place. [2024-06-04 16:04:09,402 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 115 selfloop transitions, 39 changer transitions 0/156 dead transitions. [2024-06-04 16:04:09,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 156 transitions, 1930 flow [2024-06-04 16:04:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:04:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:04:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 16:04:09,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 16:04:09,403 INFO L175 Difference]: Start difference. First operand has 156 places, 138 transitions, 1352 flow. Second operand 9 states and 104 transitions. [2024-06-04 16:04:09,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 156 transitions, 1930 flow [2024-06-04 16:04:09,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 156 transitions, 1844 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-04 16:04:09,470 INFO L231 Difference]: Finished difference. Result has 161 places, 142 transitions, 1469 flow [2024-06-04 16:04:09,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1469, PETRI_PLACES=161, PETRI_TRANSITIONS=142} [2024-06-04 16:04:09,471 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-04 16:04:09,471 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 142 transitions, 1469 flow [2024-06-04 16:04:09,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:09,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:09,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:09,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 16:04:09,471 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:09,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:09,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1257421345, now seen corresponding path program 3 times [2024-06-04 16:04:09,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:09,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973682688] [2024-06-04 16:04:09,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:09,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:14,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973682688] [2024-06-04 16:04:14,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973682688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:14,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:14,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:04:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306279026] [2024-06-04 16:04:14,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:14,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:04:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:04:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:04:14,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:14,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 142 transitions, 1469 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:14,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:14,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:14,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:15,187 INFO L124 PetriNetUnfolderBase]: 393/694 cut-off events. [2024-06-04 16:04:15,187 INFO L125 PetriNetUnfolderBase]: For 43294/43294 co-relation queries the response was YES. [2024-06-04 16:04:15,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5131 conditions, 694 events. 393/694 cut-off events. For 43294/43294 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3003 event pairs, 61 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 5049. Up to 651 conditions per place. [2024-06-04 16:04:15,192 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 22 changer transitions 0/152 dead transitions. [2024-06-04 16:04:15,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 152 transitions, 1900 flow [2024-06-04 16:04:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:04:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:04:15,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 16:04:15,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-04 16:04:15,193 INFO L175 Difference]: Start difference. First operand has 161 places, 142 transitions, 1469 flow. Second operand 9 states and 95 transitions. [2024-06-04 16:04:15,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 152 transitions, 1900 flow [2024-06-04 16:04:15,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 152 transitions, 1793 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-04 16:04:15,264 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 1412 flow [2024-06-04 16:04:15,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1412, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-06-04 16:04:15,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-04 16:04:15,265 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 1412 flow [2024-06-04 16:04:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:15,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:15,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:15,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 16:04:15,265 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:15,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1689847280, now seen corresponding path program 7 times [2024-06-04 16:04:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:15,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402061829] [2024-06-04 16:04:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:15,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:19,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402061829] [2024-06-04 16:04:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402061829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:19,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:19,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:04:19,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676924581] [2024-06-04 16:04:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:19,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:04:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:04:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:04:19,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:19,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 1412 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:19,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:19,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:19,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:20,312 INFO L124 PetriNetUnfolderBase]: 389/690 cut-off events. [2024-06-04 16:04:20,313 INFO L125 PetriNetUnfolderBase]: For 42719/42721 co-relation queries the response was YES. [2024-06-04 16:04:20,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4942 conditions, 690 events. 389/690 cut-off events. For 42719/42721 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2997 event pairs, 59 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 4858. Up to 541 conditions per place. [2024-06-04 16:04:20,317 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 40 changer transitions 0/155 dead transitions. [2024-06-04 16:04:20,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 155 transitions, 1766 flow [2024-06-04 16:04:20,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:04:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:04:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 16:04:20,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 16:04:20,318 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 1412 flow. Second operand 9 states and 102 transitions. [2024-06-04 16:04:20,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 155 transitions, 1766 flow [2024-06-04 16:04:20,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 155 transitions, 1648 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-04 16:04:20,395 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 1379 flow [2024-06-04 16:04:20,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1379, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-06-04 16:04:20,395 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-04 16:04:20,395 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 1379 flow [2024-06-04 16:04:20,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:20,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:20,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:20,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 16:04:20,396 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:20,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:20,396 INFO L85 PathProgramCache]: Analyzing trace with hash 442366867, now seen corresponding path program 4 times [2024-06-04 16:04:20,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:20,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525559288] [2024-06-04 16:04:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:25,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:25,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525559288] [2024-06-04 16:04:25,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525559288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:25,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:04:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978872033] [2024-06-04 16:04:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:25,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:04:25,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:25,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:04:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:04:25,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:25,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 1379 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:25,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:25,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:25,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:25,623 INFO L124 PetriNetUnfolderBase]: 387/687 cut-off events. [2024-06-04 16:04:25,623 INFO L125 PetriNetUnfolderBase]: For 39404/39406 co-relation queries the response was YES. [2024-06-04 16:04:25,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4827 conditions, 687 events. 387/687 cut-off events. For 39404/39406 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2987 event pairs, 68 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 4744. Up to 594 conditions per place. [2024-06-04 16:04:25,627 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 118 selfloop transitions, 34 changer transitions 0/154 dead transitions. [2024-06-04 16:04:25,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 154 transitions, 1753 flow [2024-06-04 16:04:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:04:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:04:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 16:04:25,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 16:04:25,628 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 1379 flow. Second operand 10 states and 106 transitions. [2024-06-04 16:04:25,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 154 transitions, 1753 flow [2024-06-04 16:04:25,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 154 transitions, 1668 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 16:04:25,719 INFO L231 Difference]: Finished difference. Result has 167 places, 144 transitions, 1415 flow [2024-06-04 16:04:25,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1415, PETRI_PLACES=167, PETRI_TRANSITIONS=144} [2024-06-04 16:04:25,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-04 16:04:25,720 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 144 transitions, 1415 flow [2024-06-04 16:04:25,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:25,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:25,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:25,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 16:04:25,720 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:25,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:25,721 INFO L85 PathProgramCache]: Analyzing trace with hash -205074522, now seen corresponding path program 8 times [2024-06-04 16:04:25,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:25,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100519045] [2024-06-04 16:04:25,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:25,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:29,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:29,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100519045] [2024-06-04 16:04:29,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100519045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:29,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:29,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:04:29,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17858883] [2024-06-04 16:04:29,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:29,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:04:29,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:29,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:04:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:04:29,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:29,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 144 transitions, 1415 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:29,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:29,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:29,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:30,353 INFO L124 PetriNetUnfolderBase]: 398/705 cut-off events. [2024-06-04 16:04:30,353 INFO L125 PetriNetUnfolderBase]: For 44943/44945 co-relation queries the response was YES. [2024-06-04 16:04:30,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 705 events. 398/705 cut-off events. For 44943/44945 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3092 event pairs, 59 based on Foata normal form. 2/707 useless extension candidates. Maximal degree in co-relation 5015. Up to 309 conditions per place. [2024-06-04 16:04:30,358 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 68 changer transitions 0/165 dead transitions. [2024-06-04 16:04:30,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 165 transitions, 2273 flow [2024-06-04 16:04:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:04:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:04:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 16:04:30,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 16:04:30,359 INFO L175 Difference]: Start difference. First operand has 167 places, 144 transitions, 1415 flow. Second operand 9 states and 110 transitions. [2024-06-04 16:04:30,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 165 transitions, 2273 flow [2024-06-04 16:04:30,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 165 transitions, 2170 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 16:04:30,438 INFO L231 Difference]: Finished difference. Result has 169 places, 148 transitions, 1587 flow [2024-06-04 16:04:30,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1587, PETRI_PLACES=169, PETRI_TRANSITIONS=148} [2024-06-04 16:04:30,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-04 16:04:30,438 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 148 transitions, 1587 flow [2024-06-04 16:04:30,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:30,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:30,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:30,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 16:04:30,439 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:30,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1257429064, now seen corresponding path program 9 times [2024-06-04 16:04:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742846482] [2024-06-04 16:04:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742846482] [2024-06-04 16:04:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742846482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:34,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:34,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:04:34,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116737905] [2024-06-04 16:04:34,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:34,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:04:34,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:04:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:04:34,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:34,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 148 transitions, 1587 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:34,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:34,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:34,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:34,767 INFO L124 PetriNetUnfolderBase]: 404/713 cut-off events. [2024-06-04 16:04:34,767 INFO L125 PetriNetUnfolderBase]: For 45835/45835 co-relation queries the response was YES. [2024-06-04 16:04:34,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5311 conditions, 713 events. 404/713 cut-off events. For 45835/45835 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3108 event pairs, 61 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 5225. Up to 606 conditions per place. [2024-06-04 16:04:34,772 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 134 selfloop transitions, 28 changer transitions 0/164 dead transitions. [2024-06-04 16:04:34,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 164 transitions, 2236 flow [2024-06-04 16:04:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:04:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:04:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 16:04:34,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 16:04:34,773 INFO L175 Difference]: Start difference. First operand has 169 places, 148 transitions, 1587 flow. Second operand 9 states and 102 transitions. [2024-06-04 16:04:34,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 164 transitions, 2236 flow [2024-06-04 16:04:34,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 164 transitions, 2025 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-04 16:04:34,855 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 1511 flow [2024-06-04 16:04:34,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1511, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2024-06-04 16:04:34,855 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-04 16:04:34,855 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 1511 flow [2024-06-04 16:04:34,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:34,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:34,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:34,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 16:04:34,856 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:34,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1248224854, now seen corresponding path program 10 times [2024-06-04 16:04:34,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:34,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087892721] [2024-06-04 16:04:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:34,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:38,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:38,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087892721] [2024-06-04 16:04:38,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087892721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:38,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:38,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:04:38,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177549653] [2024-06-04 16:04:38,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:38,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:04:38,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:04:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:04:38,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:38,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 1511 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:38,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:38,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:38,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:39,024 INFO L124 PetriNetUnfolderBase]: 406/717 cut-off events. [2024-06-04 16:04:39,024 INFO L125 PetriNetUnfolderBase]: For 47464/47464 co-relation queries the response was YES. [2024-06-04 16:04:39,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5053 conditions, 717 events. 406/717 cut-off events. For 47464/47464 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3145 event pairs, 66 based on Foata normal form. 4/721 useless extension candidates. Maximal degree in co-relation 4966. Up to 657 conditions per place. [2024-06-04 16:04:39,029 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 22 changer transitions 0/165 dead transitions. [2024-06-04 16:04:39,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 165 transitions, 2048 flow [2024-06-04 16:04:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:04:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:04:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-04 16:04:39,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-04 16:04:39,030 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 1511 flow. Second operand 10 states and 104 transitions. [2024-06-04 16:04:39,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 165 transitions, 2048 flow [2024-06-04 16:04:39,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 165 transitions, 1931 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 16:04:39,112 INFO L231 Difference]: Finished difference. Result has 177 places, 152 transitions, 1514 flow [2024-06-04 16:04:39,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1514, PETRI_PLACES=177, PETRI_TRANSITIONS=152} [2024-06-04 16:04:39,112 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-04 16:04:39,113 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 152 transitions, 1514 flow [2024-06-04 16:04:39,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:39,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:39,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:39,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 16:04:39,113 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:39,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:39,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1257161875, now seen corresponding path program 5 times [2024-06-04 16:04:39,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:39,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778974013] [2024-06-04 16:04:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:39,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:43,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:43,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778974013] [2024-06-04 16:04:43,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778974013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:43,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:43,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:04:43,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606735109] [2024-06-04 16:04:43,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:43,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:04:43,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:43,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:04:43,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:04:44,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:44,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 152 transitions, 1514 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:44,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:44,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:44,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:44,360 INFO L124 PetriNetUnfolderBase]: 404/714 cut-off events. [2024-06-04 16:04:44,360 INFO L125 PetriNetUnfolderBase]: For 41473/41473 co-relation queries the response was YES. [2024-06-04 16:04:44,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 714 events. 404/714 cut-off events. For 41473/41473 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3121 event pairs, 66 based on Foata normal form. 1/715 useless extension candidates. Maximal degree in co-relation 4818. Up to 681 conditions per place. [2024-06-04 16:04:44,365 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 18 changer transitions 0/162 dead transitions. [2024-06-04 16:04:44,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 162 transitions, 1859 flow [2024-06-04 16:04:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:04:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:04:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-04 16:04:44,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-04 16:04:44,367 INFO L175 Difference]: Start difference. First operand has 177 places, 152 transitions, 1514 flow. Second operand 10 states and 98 transitions. [2024-06-04 16:04:44,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 162 transitions, 1859 flow [2024-06-04 16:04:44,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 162 transitions, 1796 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 16:04:44,474 INFO L231 Difference]: Finished difference. Result has 179 places, 152 transitions, 1492 flow [2024-06-04 16:04:44,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1492, PETRI_PLACES=179, PETRI_TRANSITIONS=152} [2024-06-04 16:04:44,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-04 16:04:44,474 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 152 transitions, 1492 flow [2024-06-04 16:04:44,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:44,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:44,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:44,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 16:04:44,475 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:44,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:44,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1406399703, now seen corresponding path program 1 times [2024-06-04 16:04:44,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:44,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580437374] [2024-06-04 16:04:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:44,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:47,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:47,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580437374] [2024-06-04 16:04:47,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580437374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:47,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:47,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:04:47,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586944426] [2024-06-04 16:04:47,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:47,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:04:47,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:47,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:04:47,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:04:48,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:48,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 152 transitions, 1492 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:48,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:48,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:48,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:48,417 INFO L124 PetriNetUnfolderBase]: 408/722 cut-off events. [2024-06-04 16:04:48,417 INFO L125 PetriNetUnfolderBase]: For 44899/44899 co-relation queries the response was YES. [2024-06-04 16:04:48,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4956 conditions, 722 events. 408/722 cut-off events. For 44899/44899 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3173 event pairs, 40 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 4866. Up to 607 conditions per place. [2024-06-04 16:04:48,422 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 147 selfloop transitions, 19 changer transitions 0/168 dead transitions. [2024-06-04 16:04:48,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 168 transitions, 1885 flow [2024-06-04 16:04:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:04:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:04:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-04 16:04:48,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2024-06-04 16:04:48,424 INFO L175 Difference]: Start difference. First operand has 179 places, 152 transitions, 1492 flow. Second operand 9 states and 94 transitions. [2024-06-04 16:04:48,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 168 transitions, 1885 flow [2024-06-04 16:04:48,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 168 transitions, 1843 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 16:04:48,519 INFO L231 Difference]: Finished difference. Result has 179 places, 153 transitions, 1518 flow [2024-06-04 16:04:48,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1518, PETRI_PLACES=179, PETRI_TRANSITIONS=153} [2024-06-04 16:04:48,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-04 16:04:48,519 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 153 transitions, 1518 flow [2024-06-04 16:04:48,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:48,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:48,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:48,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 16:04:48,520 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:48,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1348307253, now seen corresponding path program 2 times [2024-06-04 16:04:48,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:48,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483494151] [2024-06-04 16:04:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:51,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:51,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483494151] [2024-06-04 16:04:51,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483494151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:51,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:51,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:04:51,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928732495] [2024-06-04 16:04:51,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:51,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:04:51,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:04:51,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:04:51,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:51,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 153 transitions, 1518 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:51,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:51,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:51,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:52,168 INFO L124 PetriNetUnfolderBase]: 412/730 cut-off events. [2024-06-04 16:04:52,169 INFO L125 PetriNetUnfolderBase]: For 46295/46295 co-relation queries the response was YES. [2024-06-04 16:04:52,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5067 conditions, 730 events. 412/730 cut-off events. For 46295/46295 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3234 event pairs, 65 based on Foata normal form. 2/732 useless extension candidates. Maximal degree in co-relation 4976. Up to 647 conditions per place. [2024-06-04 16:04:52,175 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 20 changer transitions 0/168 dead transitions. [2024-06-04 16:04:52,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 168 transitions, 1911 flow [2024-06-04 16:04:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:04:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:04:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 16:04:52,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 16:04:52,177 INFO L175 Difference]: Start difference. First operand has 179 places, 153 transitions, 1518 flow. Second operand 9 states and 97 transitions. [2024-06-04 16:04:52,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 168 transitions, 1911 flow [2024-06-04 16:04:52,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 168 transitions, 1853 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 16:04:52,272 INFO L231 Difference]: Finished difference. Result has 181 places, 154 transitions, 1532 flow [2024-06-04 16:04:52,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1532, PETRI_PLACES=181, PETRI_TRANSITIONS=154} [2024-06-04 16:04:52,273 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-04 16:04:52,273 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 154 transitions, 1532 flow [2024-06-04 16:04:52,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:52,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:52,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:52,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 16:04:52,274 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:52,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:52,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1348191933, now seen corresponding path program 3 times [2024-06-04 16:04:52,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:52,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345628354] [2024-06-04 16:04:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:52,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:04:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:04:56,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:04:56,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345628354] [2024-06-04 16:04:56,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345628354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:04:56,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:04:56,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:04:56,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917323195] [2024-06-04 16:04:56,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:04:56,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:04:56,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:04:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:04:56,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:04:56,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:04:56,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 154 transitions, 1532 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:56,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:04:56,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:04:56,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:04:56,511 INFO L124 PetriNetUnfolderBase]: 416/738 cut-off events. [2024-06-04 16:04:56,511 INFO L125 PetriNetUnfolderBase]: For 48964/48964 co-relation queries the response was YES. [2024-06-04 16:04:56,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 738 events. 416/738 cut-off events. For 48964/48964 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3301 event pairs, 61 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 5033. Up to 649 conditions per place. [2024-06-04 16:04:56,517 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 143 selfloop transitions, 24 changer transitions 0/169 dead transitions. [2024-06-04 16:04:56,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 169 transitions, 1933 flow [2024-06-04 16:04:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:04:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:04:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 16:04:56,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 16:04:56,518 INFO L175 Difference]: Start difference. First operand has 181 places, 154 transitions, 1532 flow. Second operand 9 states and 99 transitions. [2024-06-04 16:04:56,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 169 transitions, 1933 flow [2024-06-04 16:04:56,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 169 transitions, 1871 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 16:04:56,615 INFO L231 Difference]: Finished difference. Result has 183 places, 155 transitions, 1552 flow [2024-06-04 16:04:56,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1552, PETRI_PLACES=183, PETRI_TRANSITIONS=155} [2024-06-04 16:04:56,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 16:04:56,616 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 155 transitions, 1552 flow [2024-06-04 16:04:56,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:04:56,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:04:56,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:04:56,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 16:04:56,617 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:04:56,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:04:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1228436493, now seen corresponding path program 1 times [2024-06-04 16:04:56,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:04:56,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028792095] [2024-06-04 16:04:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:04:56,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:04:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:01,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:01,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028792095] [2024-06-04 16:05:01,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028792095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:01,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:01,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:05:01,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60572981] [2024-06-04 16:05:01,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:01,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:05:01,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:01,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:05:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:05:01,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:01,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 155 transitions, 1552 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:01,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:01,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:01,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:01,823 INFO L124 PetriNetUnfolderBase]: 419/743 cut-off events. [2024-06-04 16:05:01,823 INFO L125 PetriNetUnfolderBase]: For 48816/48816 co-relation queries the response was YES. [2024-06-04 16:05:01,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 743 events. 419/743 cut-off events. For 48816/48816 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3330 event pairs, 62 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 5104. Up to 642 conditions per place. [2024-06-04 16:05:01,828 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 32 changer transitions 0/171 dead transitions. [2024-06-04 16:05:01,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 171 transitions, 2004 flow [2024-06-04 16:05:01,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:05:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:05:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 16:05:01,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 16:05:01,829 INFO L175 Difference]: Start difference. First operand has 183 places, 155 transitions, 1552 flow. Second operand 9 states and 103 transitions. [2024-06-04 16:05:01,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 171 transitions, 2004 flow [2024-06-04 16:05:01,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 171 transitions, 1932 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 16:05:01,934 INFO L231 Difference]: Finished difference. Result has 185 places, 157 transitions, 1624 flow [2024-06-04 16:05:01,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1624, PETRI_PLACES=185, PETRI_TRANSITIONS=157} [2024-06-04 16:05:01,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-04 16:05:01,935 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 157 transitions, 1624 flow [2024-06-04 16:05:01,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:01,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:01,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:01,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 16:05:01,935 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:01,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:01,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1228436307, now seen corresponding path program 4 times [2024-06-04 16:05:01,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:01,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025934138] [2024-06-04 16:05:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:05,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:05,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025934138] [2024-06-04 16:05:05,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025934138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:05,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:05,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:05:05,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608514940] [2024-06-04 16:05:05,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:05,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:05:05,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:05,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:05:05,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:05:05,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:05,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 157 transitions, 1624 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:05,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:05,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:05,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:06,034 INFO L124 PetriNetUnfolderBase]: 423/751 cut-off events. [2024-06-04 16:05:06,035 INFO L125 PetriNetUnfolderBase]: For 52302/52302 co-relation queries the response was YES. [2024-06-04 16:05:06,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5294 conditions, 751 events. 423/751 cut-off events. For 52302/52302 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3386 event pairs, 64 based on Foata normal form. 2/753 useless extension candidates. Maximal degree in co-relation 5200. Up to 656 conditions per place. [2024-06-04 16:05:06,041 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 28 changer transitions 0/172 dead transitions. [2024-06-04 16:05:06,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 172 transitions, 2037 flow [2024-06-04 16:05:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:05:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:05:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 16:05:06,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 16:05:06,043 INFO L175 Difference]: Start difference. First operand has 185 places, 157 transitions, 1624 flow. Second operand 9 states and 101 transitions. [2024-06-04 16:05:06,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 172 transitions, 2037 flow [2024-06-04 16:05:06,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 172 transitions, 1928 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-04 16:05:06,148 INFO L231 Difference]: Finished difference. Result has 187 places, 158 transitions, 1608 flow [2024-06-04 16:05:06,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1608, PETRI_PLACES=187, PETRI_TRANSITIONS=158} [2024-06-04 16:05:06,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-04 16:05:06,148 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 158 transitions, 1608 flow [2024-06-04 16:05:06,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:06,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:06,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:06,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 16:05:06,149 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:06,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash 464803531, now seen corresponding path program 5 times [2024-06-04 16:05:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:06,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125978106] [2024-06-04 16:05:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:06,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:09,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:09,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125978106] [2024-06-04 16:05:09,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125978106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:09,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:09,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:05:09,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331708909] [2024-06-04 16:05:09,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:09,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:05:09,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:05:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:05:10,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:10,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 158 transitions, 1608 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:10,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:10,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:10,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:10,459 INFO L124 PetriNetUnfolderBase]: 427/759 cut-off events. [2024-06-04 16:05:10,460 INFO L125 PetriNetUnfolderBase]: For 54603/54603 co-relation queries the response was YES. [2024-06-04 16:05:10,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5350 conditions, 759 events. 427/759 cut-off events. For 54603/54603 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3434 event pairs, 48 based on Foata normal form. 2/761 useless extension candidates. Maximal degree in co-relation 5255. Up to 658 conditions per place. [2024-06-04 16:05:10,466 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2024-06-04 16:05:10,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 176 transitions, 2034 flow [2024-06-04 16:05:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:05:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:05:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 16:05:10,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 16:05:10,467 INFO L175 Difference]: Start difference. First operand has 187 places, 158 transitions, 1608 flow. Second operand 9 states and 100 transitions. [2024-06-04 16:05:10,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 176 transitions, 2034 flow [2024-06-04 16:05:10,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 176 transitions, 1953 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 16:05:10,567 INFO L231 Difference]: Finished difference. Result has 189 places, 159 transitions, 1609 flow [2024-06-04 16:05:10,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1609, PETRI_PLACES=189, PETRI_TRANSITIONS=159} [2024-06-04 16:05:10,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-04 16:05:10,568 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 159 transitions, 1609 flow [2024-06-04 16:05:10,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:10,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:10,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:10,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 16:05:10,568 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:10,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:10,568 INFO L85 PathProgramCache]: Analyzing trace with hash 464923687, now seen corresponding path program 2 times [2024-06-04 16:05:10,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:10,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665627784] [2024-06-04 16:05:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:10,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:15,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:15,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665627784] [2024-06-04 16:05:15,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665627784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:15,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:15,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:05:15,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208265578] [2024-06-04 16:05:15,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:15,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:05:15,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:15,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:05:15,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:05:15,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:15,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 159 transitions, 1609 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:15,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:15,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:15,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:15,864 INFO L124 PetriNetUnfolderBase]: 425/756 cut-off events. [2024-06-04 16:05:15,864 INFO L125 PetriNetUnfolderBase]: For 51655/51655 co-relation queries the response was YES. [2024-06-04 16:05:15,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5217 conditions, 756 events. 425/756 cut-off events. For 51655/51655 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3436 event pairs, 66 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 5121. Up to 664 conditions per place. [2024-06-04 16:05:15,872 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 30 changer transitions 0/178 dead transitions. [2024-06-04 16:05:15,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 178 transitions, 2090 flow [2024-06-04 16:05:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:05:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:05:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 16:05:15,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 16:05:15,873 INFO L175 Difference]: Start difference. First operand has 189 places, 159 transitions, 1609 flow. Second operand 9 states and 103 transitions. [2024-06-04 16:05:15,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 178 transitions, 2090 flow [2024-06-04 16:05:16,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 178 transitions, 2018 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 16:05:16,030 INFO L231 Difference]: Finished difference. Result has 191 places, 161 transitions, 1680 flow [2024-06-04 16:05:16,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1680, PETRI_PLACES=191, PETRI_TRANSITIONS=161} [2024-06-04 16:05:16,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-04 16:05:16,030 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 161 transitions, 1680 flow [2024-06-04 16:05:16,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:16,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:16,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:16,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 16:05:16,031 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:16,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:16,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1069390011, now seen corresponding path program 6 times [2024-06-04 16:05:16,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:16,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612596972] [2024-06-04 16:05:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:16,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:19,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:19,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612596972] [2024-06-04 16:05:19,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612596972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:19,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:19,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:05:19,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721130199] [2024-06-04 16:05:19,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:19,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:05:19,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:19,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:05:19,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:05:19,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:19,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 161 transitions, 1680 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:19,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:19,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:19,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:19,970 INFO L124 PetriNetUnfolderBase]: 429/764 cut-off events. [2024-06-04 16:05:19,970 INFO L125 PetriNetUnfolderBase]: For 55270/55270 co-relation queries the response was YES. [2024-06-04 16:05:19,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5297 conditions, 764 events. 429/764 cut-off events. For 55270/55270 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3484 event pairs, 68 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 5200. Up to 675 conditions per place. [2024-06-04 16:05:19,975 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 27 changer transitions 0/179 dead transitions. [2024-06-04 16:05:19,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 179 transitions, 2122 flow [2024-06-04 16:05:19,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:05:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:05:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 16:05:19,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 16:05:19,976 INFO L175 Difference]: Start difference. First operand has 191 places, 161 transitions, 1680 flow. Second operand 9 states and 102 transitions. [2024-06-04 16:05:19,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 179 transitions, 2122 flow [2024-06-04 16:05:20,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 179 transitions, 2012 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-04 16:05:20,091 INFO L231 Difference]: Finished difference. Result has 193 places, 162 transitions, 1665 flow [2024-06-04 16:05:20,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1665, PETRI_PLACES=193, PETRI_TRANSITIONS=162} [2024-06-04 16:05:20,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-04 16:05:20,092 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 162 transitions, 1665 flow [2024-06-04 16:05:20,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:20,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:20,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:20,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 16:05:20,092 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:20,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:20,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1069385361, now seen corresponding path program 7 times [2024-06-04 16:05:20,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:20,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920277150] [2024-06-04 16:05:20,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:20,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:23,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:23,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920277150] [2024-06-04 16:05:23,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920277150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:23,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:23,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:05:23,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741917980] [2024-06-04 16:05:23,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:23,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:05:23,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:23,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:05:23,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:05:23,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:23,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 162 transitions, 1665 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:23,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:23,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:23,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:23,925 INFO L124 PetriNetUnfolderBase]: 433/772 cut-off events. [2024-06-04 16:05:23,925 INFO L125 PetriNetUnfolderBase]: For 57057/57057 co-relation queries the response was YES. [2024-06-04 16:05:23,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5358 conditions, 772 events. 433/772 cut-off events. For 57057/57057 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3537 event pairs, 68 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 5260. Up to 686 conditions per place. [2024-06-04 16:05:23,931 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 24 changer transitions 0/180 dead transitions. [2024-06-04 16:05:23,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 180 transitions, 2107 flow [2024-06-04 16:05:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:05:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:05:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 16:05:23,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-04 16:05:23,932 INFO L175 Difference]: Start difference. First operand has 193 places, 162 transitions, 1665 flow. Second operand 9 states and 101 transitions. [2024-06-04 16:05:23,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 180 transitions, 2107 flow [2024-06-04 16:05:24,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 180 transitions, 2024 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 16:05:24,045 INFO L231 Difference]: Finished difference. Result has 195 places, 163 transitions, 1672 flow [2024-06-04 16:05:24,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1672, PETRI_PLACES=195, PETRI_TRANSITIONS=163} [2024-06-04 16:05:24,046 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-04 16:05:24,046 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 163 transitions, 1672 flow [2024-06-04 16:05:24,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:24,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:24,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:24,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 16:05:24,046 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:24,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:24,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1074038585, now seen corresponding path program 1 times [2024-06-04 16:05:24,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:24,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337881278] [2024-06-04 16:05:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:24,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:28,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:28,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337881278] [2024-06-04 16:05:28,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337881278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:28,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:28,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:05:28,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620655939] [2024-06-04 16:05:28,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:28,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:05:28,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:28,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:05:28,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:05:28,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:28,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 163 transitions, 1672 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:28,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:28,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:28,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:29,417 INFO L124 PetriNetUnfolderBase]: 439/783 cut-off events. [2024-06-04 16:05:29,417 INFO L125 PetriNetUnfolderBase]: For 58619/58619 co-relation queries the response was YES. [2024-06-04 16:05:29,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 783 events. 439/783 cut-off events. For 58619/58619 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3605 event pairs, 74 based on Foata normal form. 2/785 useless extension candidates. Maximal degree in co-relation 5319. Up to 691 conditions per place. [2024-06-04 16:05:29,423 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 155 selfloop transitions, 27 changer transitions 0/184 dead transitions. [2024-06-04 16:05:29,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 184 transitions, 2162 flow [2024-06-04 16:05:29,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:05:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:05:29,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 16:05:29,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 16:05:29,424 INFO L175 Difference]: Start difference. First operand has 195 places, 163 transitions, 1672 flow. Second operand 10 states and 111 transitions. [2024-06-04 16:05:29,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 184 transitions, 2162 flow [2024-06-04 16:05:29,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 184 transitions, 2082 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 16:05:29,553 INFO L231 Difference]: Finished difference. Result has 198 places, 165 transitions, 1715 flow [2024-06-04 16:05:29,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1715, PETRI_PLACES=198, PETRI_TRANSITIONS=165} [2024-06-04 16:05:29,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-04 16:05:29,553 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 165 transitions, 1715 flow [2024-06-04 16:05:29,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:29,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:29,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:29,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 16:05:29,554 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:29,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash 635625931, now seen corresponding path program 8 times [2024-06-04 16:05:29,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:29,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100996428] [2024-06-04 16:05:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:29,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:33,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:33,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100996428] [2024-06-04 16:05:33,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100996428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:33,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:33,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:05:33,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578110663] [2024-06-04 16:05:33,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:33,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:05:33,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:33,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:05:33,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:05:33,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:33,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 165 transitions, 1715 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:33,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:33,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:33,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:33,882 INFO L124 PetriNetUnfolderBase]: 443/791 cut-off events. [2024-06-04 16:05:33,882 INFO L125 PetriNetUnfolderBase]: For 60393/60393 co-relation queries the response was YES. [2024-06-04 16:05:33,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5493 conditions, 791 events. 443/791 cut-off events. For 60393/60393 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3683 event pairs, 66 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 5393. Up to 689 conditions per place. [2024-06-04 16:05:33,888 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 27 changer transitions 0/181 dead transitions. [2024-06-04 16:05:33,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 181 transitions, 2160 flow [2024-06-04 16:05:33,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:05:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:05:33,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 16:05:33,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 16:05:33,890 INFO L175 Difference]: Start difference. First operand has 198 places, 165 transitions, 1715 flow. Second operand 9 states and 99 transitions. [2024-06-04 16:05:33,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 181 transitions, 2160 flow [2024-06-04 16:05:34,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 181 transitions, 2059 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 16:05:34,010 INFO L231 Difference]: Finished difference. Result has 199 places, 166 transitions, 1712 flow [2024-06-04 16:05:34,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1712, PETRI_PLACES=199, PETRI_TRANSITIONS=166} [2024-06-04 16:05:34,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-04 16:05:34,011 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 166 transitions, 1712 flow [2024-06-04 16:05:34,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:34,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:34,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:34,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 16:05:34,011 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:34,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1240087791, now seen corresponding path program 9 times [2024-06-04 16:05:34,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:34,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745417695] [2024-06-04 16:05:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:34,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:37,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:37,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745417695] [2024-06-04 16:05:37,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745417695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:37,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:37,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:05:37,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026560234] [2024-06-04 16:05:37,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:37,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:05:37,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:37,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:05:37,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:05:37,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:37,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 166 transitions, 1712 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:37,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:37,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:37,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:38,218 INFO L124 PetriNetUnfolderBase]: 447/799 cut-off events. [2024-06-04 16:05:38,218 INFO L125 PetriNetUnfolderBase]: For 62450/62450 co-relation queries the response was YES. [2024-06-04 16:05:38,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5561 conditions, 799 events. 447/799 cut-off events. For 62450/62450 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3717 event pairs, 64 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 5460. Up to 697 conditions per place. [2024-06-04 16:05:38,225 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 26 changer transitions 0/182 dead transitions. [2024-06-04 16:05:38,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 182 transitions, 2157 flow [2024-06-04 16:05:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:05:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:05:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 16:05:38,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 16:05:38,229 INFO L175 Difference]: Start difference. First operand has 199 places, 166 transitions, 1712 flow. Second operand 9 states and 98 transitions. [2024-06-04 16:05:38,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 182 transitions, 2157 flow [2024-06-04 16:05:38,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 182 transitions, 2069 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 16:05:38,358 INFO L231 Difference]: Finished difference. Result has 201 places, 167 transitions, 1722 flow [2024-06-04 16:05:38,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1722, PETRI_PLACES=201, PETRI_TRANSITIONS=167} [2024-06-04 16:05:38,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-04 16:05:38,359 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 167 transitions, 1722 flow [2024-06-04 16:05:38,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:38,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:38,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:38,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 16:05:38,359 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:38,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash 642301285, now seen corresponding path program 1 times [2024-06-04 16:05:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:38,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570207104] [2024-06-04 16:05:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:38,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:43,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:43,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570207104] [2024-06-04 16:05:43,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570207104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:43,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:43,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:05:43,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966264942] [2024-06-04 16:05:43,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:43,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:05:43,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:43,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:05:43,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:05:43,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:43,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 167 transitions, 1722 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:43,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:43,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:43,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:44,259 INFO L124 PetriNetUnfolderBase]: 471/851 cut-off events. [2024-06-04 16:05:44,259 INFO L125 PetriNetUnfolderBase]: For 92820/92820 co-relation queries the response was YES. [2024-06-04 16:05:44,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 851 events. 471/851 cut-off events. For 92820/92820 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4063 event pairs, 80 based on Foata normal form. 14/865 useless extension candidates. Maximal degree in co-relation 5740. Up to 693 conditions per place. [2024-06-04 16:05:44,265 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 153 selfloop transitions, 30 changer transitions 4/189 dead transitions. [2024-06-04 16:05:44,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 189 transitions, 2267 flow [2024-06-04 16:05:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:05:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:05:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 16:05:44,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 16:05:44,266 INFO L175 Difference]: Start difference. First operand has 201 places, 167 transitions, 1722 flow. Second operand 10 states and 116 transitions. [2024-06-04 16:05:44,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 189 transitions, 2267 flow [2024-06-04 16:05:44,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 189 transitions, 2179 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 16:05:44,413 INFO L231 Difference]: Finished difference. Result has 204 places, 168 transitions, 1763 flow [2024-06-04 16:05:44,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1763, PETRI_PLACES=204, PETRI_TRANSITIONS=168} [2024-06-04 16:05:44,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-04 16:05:44,413 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 168 transitions, 1763 flow [2024-06-04 16:05:44,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:44,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:44,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:44,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 16:05:44,414 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:44,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash -878827739, now seen corresponding path program 2 times [2024-06-04 16:05:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825955438] [2024-06-04 16:05:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:49,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:49,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825955438] [2024-06-04 16:05:49,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825955438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:49,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:49,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:05:49,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750456243] [2024-06-04 16:05:49,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:49,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:05:49,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:49,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:05:49,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:05:49,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:49,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 168 transitions, 1763 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:49,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:49,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:49,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:49,934 INFO L124 PetriNetUnfolderBase]: 481/867 cut-off events. [2024-06-04 16:05:49,934 INFO L125 PetriNetUnfolderBase]: For 72124/72124 co-relation queries the response was YES. [2024-06-04 16:05:49,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6172 conditions, 867 events. 481/867 cut-off events. For 72124/72124 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4154 event pairs, 67 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 6069. Up to 646 conditions per place. [2024-06-04 16:05:49,940 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 52 changer transitions 0/190 dead transitions. [2024-06-04 16:05:49,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 190 transitions, 2474 flow [2024-06-04 16:05:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:05:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:05:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 16:05:49,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 16:05:49,941 INFO L175 Difference]: Start difference. First operand has 204 places, 168 transitions, 1763 flow. Second operand 10 states and 113 transitions. [2024-06-04 16:05:49,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 190 transitions, 2474 flow [2024-06-04 16:05:50,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 190 transitions, 2372 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 16:05:50,106 INFO L231 Difference]: Finished difference. Result has 206 places, 172 transitions, 1903 flow [2024-06-04 16:05:50,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1903, PETRI_PLACES=206, PETRI_TRANSITIONS=172} [2024-06-04 16:05:50,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-04 16:05:50,106 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 172 transitions, 1903 flow [2024-06-04 16:05:50,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:50,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:50,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:50,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 16:05:50,107 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:50,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1240272365, now seen corresponding path program 3 times [2024-06-04 16:05:50,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:50,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515802311] [2024-06-04 16:05:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:50,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:05:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:05:54,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:05:54,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515802311] [2024-06-04 16:05:54,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515802311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:05:54,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:05:54,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:05:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900375813] [2024-06-04 16:05:54,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:05:54,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:05:54,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:05:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:05:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:05:54,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:05:54,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 172 transitions, 1903 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:54,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:05:54,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:05:54,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:05:55,337 INFO L124 PetriNetUnfolderBase]: 487/877 cut-off events. [2024-06-04 16:05:55,338 INFO L125 PetriNetUnfolderBase]: For 74115/74115 co-relation queries the response was YES. [2024-06-04 16:05:55,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6303 conditions, 877 events. 487/877 cut-off events. For 74115/74115 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4200 event pairs, 73 based on Foata normal form. 2/879 useless extension candidates. Maximal degree in co-relation 6199. Up to 765 conditions per place. [2024-06-04 16:05:55,344 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 30 changer transitions 0/191 dead transitions. [2024-06-04 16:05:55,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 191 transitions, 2410 flow [2024-06-04 16:05:55,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:05:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:05:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 16:05:55,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 16:05:55,345 INFO L175 Difference]: Start difference. First operand has 206 places, 172 transitions, 1903 flow. Second operand 10 states and 109 transitions. [2024-06-04 16:05:55,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 191 transitions, 2410 flow [2024-06-04 16:05:55,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 191 transitions, 2273 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-04 16:05:55,508 INFO L231 Difference]: Finished difference. Result has 210 places, 174 transitions, 1903 flow [2024-06-04 16:05:55,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1903, PETRI_PLACES=210, PETRI_TRANSITIONS=174} [2024-06-04 16:05:55,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-04 16:05:55,508 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 174 transitions, 1903 flow [2024-06-04 16:05:55,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:05:55,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:05:55,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:05:55,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 16:05:55,509 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:05:55,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:05:55,509 INFO L85 PathProgramCache]: Analyzing trace with hash 642292605, now seen corresponding path program 4 times [2024-06-04 16:05:55,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:05:55,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433540301] [2024-06-04 16:05:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:05:55,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:05:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:00,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433540301] [2024-06-04 16:06:00,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433540301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:00,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:00,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:06:00,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967811864] [2024-06-04 16:06:00,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:00,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:06:00,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:00,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:06:00,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:06:00,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:00,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 174 transitions, 1903 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:00,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:00,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:00,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:01,256 INFO L124 PetriNetUnfolderBase]: 493/887 cut-off events. [2024-06-04 16:06:01,256 INFO L125 PetriNetUnfolderBase]: For 75466/75466 co-relation queries the response was YES. [2024-06-04 16:06:01,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6353 conditions, 887 events. 493/887 cut-off events. For 75466/75466 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4269 event pairs, 71 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 6247. Up to 658 conditions per place. [2024-06-04 16:06:01,264 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 56 changer transitions 0/194 dead transitions. [2024-06-04 16:06:01,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 194 transitions, 2558 flow [2024-06-04 16:06:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:06:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:06:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 16:06:01,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 16:06:01,265 INFO L175 Difference]: Start difference. First operand has 210 places, 174 transitions, 1903 flow. Second operand 10 states and 113 transitions. [2024-06-04 16:06:01,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 194 transitions, 2558 flow [2024-06-04 16:06:01,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 194 transitions, 2459 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 16:06:01,415 INFO L231 Difference]: Finished difference. Result has 212 places, 176 transitions, 1981 flow [2024-06-04 16:06:01,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1981, PETRI_PLACES=212, PETRI_TRANSITIONS=176} [2024-06-04 16:06:01,416 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-04 16:06:01,416 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 176 transitions, 1981 flow [2024-06-04 16:06:01,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:01,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:01,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:01,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 16:06:01,417 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:01,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash -879073693, now seen corresponding path program 10 times [2024-06-04 16:06:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:01,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164861001] [2024-06-04 16:06:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:01,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:04,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:04,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164861001] [2024-06-04 16:06:04,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164861001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:04,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:04,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:06:04,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324743792] [2024-06-04 16:06:04,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:04,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:06:04,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:04,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:06:04,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:06:04,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:04,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 176 transitions, 1981 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:04,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:04,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:04,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:05,074 INFO L124 PetriNetUnfolderBase]: 497/895 cut-off events. [2024-06-04 16:06:05,074 INFO L125 PetriNetUnfolderBase]: For 77942/77942 co-relation queries the response was YES. [2024-06-04 16:06:05,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6517 conditions, 895 events. 497/895 cut-off events. For 77942/77942 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4331 event pairs, 73 based on Foata normal form. 2/897 useless extension candidates. Maximal degree in co-relation 6410. Up to 763 conditions per place. [2024-06-04 16:06:05,081 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 156 selfloop transitions, 34 changer transitions 0/192 dead transitions. [2024-06-04 16:06:05,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 192 transitions, 2452 flow [2024-06-04 16:06:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:06:05,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:06:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 16:06:05,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 16:06:05,089 INFO L175 Difference]: Start difference. First operand has 212 places, 176 transitions, 1981 flow. Second operand 9 states and 100 transitions. [2024-06-04 16:06:05,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 192 transitions, 2452 flow [2024-06-04 16:06:05,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 192 transitions, 2325 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 16:06:05,244 INFO L231 Difference]: Finished difference. Result has 214 places, 177 transitions, 1970 flow [2024-06-04 16:06:05,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1970, PETRI_PLACES=214, PETRI_TRANSITIONS=177} [2024-06-04 16:06:05,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-04 16:06:05,245 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 177 transitions, 1970 flow [2024-06-04 16:06:05,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:05,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:05,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:05,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 16:06:05,245 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:05,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash 642061965, now seen corresponding path program 5 times [2024-06-04 16:06:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:05,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986380421] [2024-06-04 16:06:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:09,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:09,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986380421] [2024-06-04 16:06:09,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986380421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:09,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:09,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:06:09,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954388955] [2024-06-04 16:06:09,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:09,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:06:09,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:09,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:06:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:06:09,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:09,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 177 transitions, 1970 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:09,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:09,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:09,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:10,469 INFO L124 PetriNetUnfolderBase]: 493/889 cut-off events. [2024-06-04 16:06:10,469 INFO L125 PetriNetUnfolderBase]: For 73705/73705 co-relation queries the response was YES. [2024-06-04 16:06:10,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6262 conditions, 889 events. 493/889 cut-off events. For 73705/73705 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4309 event pairs, 70 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 6154. Up to 663 conditions per place. [2024-06-04 16:06:10,476 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 141 selfloop transitions, 51 changer transitions 0/194 dead transitions. [2024-06-04 16:06:10,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 194 transitions, 2415 flow [2024-06-04 16:06:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:06:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:06:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 16:06:10,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-04 16:06:10,477 INFO L175 Difference]: Start difference. First operand has 214 places, 177 transitions, 1970 flow. Second operand 10 states and 114 transitions. [2024-06-04 16:06:10,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 194 transitions, 2415 flow [2024-06-04 16:06:10,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 194 transitions, 2277 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-04 16:06:10,622 INFO L231 Difference]: Finished difference. Result has 217 places, 177 transitions, 1939 flow [2024-06-04 16:06:10,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1939, PETRI_PLACES=217, PETRI_TRANSITIONS=177} [2024-06-04 16:06:10,622 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-04 16:06:10,622 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 177 transitions, 1939 flow [2024-06-04 16:06:10,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:10,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:10,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 16:06:10,623 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:10,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash -325600629, now seen corresponding path program 11 times [2024-06-04 16:06:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:10,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201143526] [2024-06-04 16:06:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:10,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:13,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:13,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201143526] [2024-06-04 16:06:13,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201143526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:13,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:13,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:06:13,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937326827] [2024-06-04 16:06:13,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:13,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:06:13,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:13,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:06:13,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:06:13,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:13,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 177 transitions, 1939 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:13,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:13,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:13,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:14,042 INFO L124 PetriNetUnfolderBase]: 497/896 cut-off events. [2024-06-04 16:06:14,043 INFO L125 PetriNetUnfolderBase]: For 75327/75327 co-relation queries the response was YES. [2024-06-04 16:06:14,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6316 conditions, 896 events. 497/896 cut-off events. For 75327/75327 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4343 event pairs, 88 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 6207. Up to 863 conditions per place. [2024-06-04 16:06:14,049 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 173 selfloop transitions, 14 changer transitions 0/189 dead transitions. [2024-06-04 16:06:14,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 189 transitions, 2388 flow [2024-06-04 16:06:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:06:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:06:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-04 16:06:14,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 16:06:14,051 INFO L175 Difference]: Start difference. First operand has 217 places, 177 transitions, 1939 flow. Second operand 9 states and 90 transitions. [2024-06-04 16:06:14,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 189 transitions, 2388 flow [2024-06-04 16:06:14,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 189 transitions, 2229 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-04 16:06:14,203 INFO L231 Difference]: Finished difference. Result has 216 places, 178 transitions, 1858 flow [2024-06-04 16:06:14,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1858, PETRI_PLACES=216, PETRI_TRANSITIONS=178} [2024-06-04 16:06:14,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-04 16:06:14,204 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 178 transitions, 1858 flow [2024-06-04 16:06:14,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:14,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:14,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:14,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 16:06:14,204 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:14,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:14,204 INFO L85 PathProgramCache]: Analyzing trace with hash -325593685, now seen corresponding path program 6 times [2024-06-04 16:06:14,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:14,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679099615] [2024-06-04 16:06:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:14,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:19,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:19,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679099615] [2024-06-04 16:06:19,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679099615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:19,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:19,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:06:19,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831349287] [2024-06-04 16:06:19,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:19,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:06:19,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:19,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:06:19,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:06:19,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:19,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 178 transitions, 1858 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:19,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:19,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:19,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:19,864 INFO L124 PetriNetUnfolderBase]: 503/906 cut-off events. [2024-06-04 16:06:19,865 INFO L125 PetriNetUnfolderBase]: For 77365/77365 co-relation queries the response was YES. [2024-06-04 16:06:19,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6253 conditions, 906 events. 503/906 cut-off events. For 77365/77365 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4407 event pairs, 83 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 6143. Up to 798 conditions per place. [2024-06-04 16:06:19,871 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 32 changer transitions 0/195 dead transitions. [2024-06-04 16:06:19,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 195 transitions, 2505 flow [2024-06-04 16:06:19,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:06:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:06:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 16:06:19,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 16:06:19,872 INFO L175 Difference]: Start difference. First operand has 216 places, 178 transitions, 1858 flow. Second operand 10 states and 110 transitions. [2024-06-04 16:06:19,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 195 transitions, 2505 flow [2024-06-04 16:06:20,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 195 transitions, 2437 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 16:06:20,062 INFO L231 Difference]: Finished difference. Result has 219 places, 180 transitions, 1913 flow [2024-06-04 16:06:20,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1913, PETRI_PLACES=219, PETRI_TRANSITIONS=180} [2024-06-04 16:06:20,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-04 16:06:20,063 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 180 transitions, 1913 flow [2024-06-04 16:06:20,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:20,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:20,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:20,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 16:06:20,063 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:20,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash 343391363, now seen corresponding path program 2 times [2024-06-04 16:06:20,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:20,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551347939] [2024-06-04 16:06:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:20,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:25,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:25,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551347939] [2024-06-04 16:06:25,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551347939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:25,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:25,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:06:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711944398] [2024-06-04 16:06:25,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:25,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:06:25,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:25,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:06:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:06:25,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:25,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 180 transitions, 1913 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:25,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:25,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:25,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:25,795 INFO L124 PetriNetUnfolderBase]: 507/916 cut-off events. [2024-06-04 16:06:25,795 INFO L125 PetriNetUnfolderBase]: For 79212/79214 co-relation queries the response was YES. [2024-06-04 16:06:25,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6342 conditions, 916 events. 507/916 cut-off events. For 79212/79214 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4498 event pairs, 103 based on Foata normal form. 2/918 useless extension candidates. Maximal degree in co-relation 6231. Up to 835 conditions per place. [2024-06-04 16:06:25,802 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 163 selfloop transitions, 26 changer transitions 0/191 dead transitions. [2024-06-04 16:06:25,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 191 transitions, 2349 flow [2024-06-04 16:06:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:06:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:06:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-04 16:06:25,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-04 16:06:25,804 INFO L175 Difference]: Start difference. First operand has 219 places, 180 transitions, 1913 flow. Second operand 10 states and 104 transitions. [2024-06-04 16:06:25,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 191 transitions, 2349 flow [2024-06-04 16:06:26,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 191 transitions, 2245 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 16:06:26,005 INFO L231 Difference]: Finished difference. Result has 221 places, 181 transitions, 1903 flow [2024-06-04 16:06:26,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1903, PETRI_PLACES=221, PETRI_TRANSITIONS=181} [2024-06-04 16:06:26,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-04 16:06:26,006 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 181 transitions, 1903 flow [2024-06-04 16:06:26,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:26,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:26,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:26,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 16:06:26,006 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:26,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 207249661, now seen corresponding path program 3 times [2024-06-04 16:06:26,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:26,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044445194] [2024-06-04 16:06:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:26,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:30,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:30,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044445194] [2024-06-04 16:06:30,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044445194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:30,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:30,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:06:30,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982610489] [2024-06-04 16:06:30,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:30,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:06:30,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:30,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:06:30,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:06:30,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:30,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 181 transitions, 1903 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:30,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:30,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:30,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:30,813 INFO L124 PetriNetUnfolderBase]: 516/932 cut-off events. [2024-06-04 16:06:30,813 INFO L125 PetriNetUnfolderBase]: For 85003/85005 co-relation queries the response was YES. [2024-06-04 16:06:30,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 932 events. 516/932 cut-off events. For 85003/85005 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4595 event pairs, 94 based on Foata normal form. 2/934 useless extension candidates. Maximal degree in co-relation 6456. Up to 754 conditions per place. [2024-06-04 16:06:30,819 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 135 selfloop transitions, 60 changer transitions 0/197 dead transitions. [2024-06-04 16:06:30,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 197 transitions, 2595 flow [2024-06-04 16:06:30,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:06:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:06:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 16:06:30,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 16:06:30,820 INFO L175 Difference]: Start difference. First operand has 221 places, 181 transitions, 1903 flow. Second operand 10 states and 115 transitions. [2024-06-04 16:06:30,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 197 transitions, 2595 flow [2024-06-04 16:06:31,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 197 transitions, 2511 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 16:06:31,053 INFO L231 Difference]: Finished difference. Result has 224 places, 184 transitions, 2085 flow [2024-06-04 16:06:31,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2085, PETRI_PLACES=224, PETRI_TRANSITIONS=184} [2024-06-04 16:06:31,054 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-04 16:06:31,054 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 184 transitions, 2085 flow [2024-06-04 16:06:31,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:31,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:31,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:31,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 16:06:31,055 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:31,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:31,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2062332881, now seen corresponding path program 7 times [2024-06-04 16:06:31,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:31,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907321298] [2024-06-04 16:06:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:31,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:35,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:35,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907321298] [2024-06-04 16:06:35,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907321298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:35,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:35,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:06:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769771852] [2024-06-04 16:06:35,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:35,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:06:35,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:35,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:06:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:06:35,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:35,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 184 transitions, 2085 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:35,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:35,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:35,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:36,526 INFO L124 PetriNetUnfolderBase]: 522/940 cut-off events. [2024-06-04 16:06:36,526 INFO L125 PetriNetUnfolderBase]: For 87349/87349 co-relation queries the response was YES. [2024-06-04 16:06:36,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6766 conditions, 940 events. 522/940 cut-off events. For 87349/87349 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4625 event pairs, 83 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 6652. Up to 828 conditions per place. [2024-06-04 16:06:36,534 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 35 changer transitions 0/203 dead transitions. [2024-06-04 16:06:36,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 203 transitions, 2924 flow [2024-06-04 16:06:36,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:06:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:06:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 16:06:36,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 16:06:36,535 INFO L175 Difference]: Start difference. First operand has 224 places, 184 transitions, 2085 flow. Second operand 10 states and 113 transitions. [2024-06-04 16:06:36,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 203 transitions, 2924 flow [2024-06-04 16:06:36,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 203 transitions, 2800 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 16:06:36,755 INFO L231 Difference]: Finished difference. Result has 227 places, 186 transitions, 2090 flow [2024-06-04 16:06:36,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2090, PETRI_PLACES=227, PETRI_TRANSITIONS=186} [2024-06-04 16:06:36,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-04 16:06:36,756 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 186 transitions, 2090 flow [2024-06-04 16:06:36,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:36,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:36,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:36,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 16:06:36,758 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:36,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash 312818153, now seen corresponding path program 12 times [2024-06-04 16:06:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:36,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74817758] [2024-06-04 16:06:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:36,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:40,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:40,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74817758] [2024-06-04 16:06:40,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74817758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:40,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:40,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:06:40,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156631224] [2024-06-04 16:06:40,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:40,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:06:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:40,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:06:40,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:06:40,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:40,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 186 transitions, 2090 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:40,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:40,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:40,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:40,555 INFO L124 PetriNetUnfolderBase]: 526/950 cut-off events. [2024-06-04 16:06:40,555 INFO L125 PetriNetUnfolderBase]: For 89899/89901 co-relation queries the response was YES. [2024-06-04 16:06:40,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6808 conditions, 950 events. 526/950 cut-off events. For 89899/89901 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4727 event pairs, 80 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 6693. Up to 820 conditions per place. [2024-06-04 16:06:40,562 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 164 selfloop transitions, 34 changer transitions 0/200 dead transitions. [2024-06-04 16:06:40,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 200 transitions, 2576 flow [2024-06-04 16:06:40,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:06:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:06:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 16:06:40,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 16:06:40,563 INFO L175 Difference]: Start difference. First operand has 227 places, 186 transitions, 2090 flow. Second operand 9 states and 100 transitions. [2024-06-04 16:06:40,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 200 transitions, 2576 flow [2024-06-04 16:06:40,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 200 transitions, 2466 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 16:06:40,756 INFO L231 Difference]: Finished difference. Result has 228 places, 187 transitions, 2100 flow [2024-06-04 16:06:40,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2100, PETRI_PLACES=228, PETRI_TRANSITIONS=187} [2024-06-04 16:06:40,757 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-04 16:06:40,757 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 187 transitions, 2100 flow [2024-06-04 16:06:40,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:40,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:40,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:40,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 16:06:40,758 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:40,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1050109015, now seen corresponding path program 8 times [2024-06-04 16:06:40,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:40,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860564911] [2024-06-04 16:06:40,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:40,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:46,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:46,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860564911] [2024-06-04 16:06:46,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860564911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:46,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:46,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:06:46,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824389699] [2024-06-04 16:06:46,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:46,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:06:46,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:46,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:06:46,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:06:46,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:46,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 187 transitions, 2100 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:46,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:46,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:46,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:46,499 INFO L124 PetriNetUnfolderBase]: 522/942 cut-off events. [2024-06-04 16:06:46,499 INFO L125 PetriNetUnfolderBase]: For 84442/84442 co-relation queries the response was YES. [2024-06-04 16:06:46,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 942 events. 522/942 cut-off events. For 84442/84442 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4679 event pairs, 85 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 6441. Up to 890 conditions per place. [2024-06-04 16:06:46,507 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 20 changer transitions 0/201 dead transitions. [2024-06-04 16:06:46,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 201 transitions, 2547 flow [2024-06-04 16:06:46,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:06:46,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:06:46,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-04 16:06:46,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-04 16:06:46,509 INFO L175 Difference]: Start difference. First operand has 228 places, 187 transitions, 2100 flow. Second operand 10 states and 103 transitions. [2024-06-04 16:06:46,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 201 transitions, 2547 flow [2024-06-04 16:06:46,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 201 transitions, 2403 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-04 16:06:46,742 INFO L231 Difference]: Finished difference. Result has 231 places, 187 transitions, 2001 flow [2024-06-04 16:06:46,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=231, PETRI_TRANSITIONS=187} [2024-06-04 16:06:46,743 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-04 16:06:46,743 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 187 transitions, 2001 flow [2024-06-04 16:06:46,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:46,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:46,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:46,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 16:06:46,744 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:46,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:46,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2004434379, now seen corresponding path program 4 times [2024-06-04 16:06:46,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:46,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791776011] [2024-06-04 16:06:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:46,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:50,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:50,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791776011] [2024-06-04 16:06:50,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791776011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:50,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:50,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:06:50,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881279183] [2024-06-04 16:06:50,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:50,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:06:50,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:50,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:06:50,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:06:50,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:50,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 187 transitions, 2001 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:50,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:50,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:50,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:51,285 INFO L124 PetriNetUnfolderBase]: 533/963 cut-off events. [2024-06-04 16:06:51,285 INFO L125 PetriNetUnfolderBase]: For 93407/93407 co-relation queries the response was YES. [2024-06-04 16:06:51,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6818 conditions, 963 events. 533/963 cut-off events. For 93407/93407 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4785 event pairs, 89 based on Foata normal form. 2/965 useless extension candidates. Maximal degree in co-relation 6702. Up to 905 conditions per place. [2024-06-04 16:06:51,293 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 181 selfloop transitions, 20 changer transitions 0/203 dead transitions. [2024-06-04 16:06:51,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 203 transitions, 2684 flow [2024-06-04 16:06:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:06:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:06:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-04 16:06:51,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-04 16:06:51,294 INFO L175 Difference]: Start difference. First operand has 231 places, 187 transitions, 2001 flow. Second operand 11 states and 107 transitions. [2024-06-04 16:06:51,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 203 transitions, 2684 flow [2024-06-04 16:06:51,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 203 transitions, 2628 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 16:06:51,527 INFO L231 Difference]: Finished difference. Result has 233 places, 189 transitions, 2071 flow [2024-06-04 16:06:51,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2071, PETRI_PLACES=233, PETRI_TRANSITIONS=189} [2024-06-04 16:06:51,527 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-04 16:06:51,527 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 189 transitions, 2071 flow [2024-06-04 16:06:51,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:51,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:51,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:51,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 16:06:51,528 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:51,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:51,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1767113371, now seen corresponding path program 5 times [2024-06-04 16:06:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:51,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992044230] [2024-06-04 16:06:51,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:51,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:06:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:06:55,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:06:55,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992044230] [2024-06-04 16:06:55,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992044230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:06:55,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:06:55,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:06:55,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942936774] [2024-06-04 16:06:55,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:06:55,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:06:55,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:06:55,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:06:55,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:06:55,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:06:55,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 189 transitions, 2071 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:55,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:06:55,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:06:55,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:06:55,902 INFO L124 PetriNetUnfolderBase]: 537/971 cut-off events. [2024-06-04 16:06:55,902 INFO L125 PetriNetUnfolderBase]: For 96302/96302 co-relation queries the response was YES. [2024-06-04 16:06:55,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6940 conditions, 971 events. 537/971 cut-off events. For 96302/96302 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4855 event pairs, 91 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 6823. Up to 932 conditions per place. [2024-06-04 16:06:55,910 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 19 changer transitions 0/202 dead transitions. [2024-06-04 16:06:55,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 202 transitions, 2542 flow [2024-06-04 16:06:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:06:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:06:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-04 16:06:55,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-04 16:06:55,912 INFO L175 Difference]: Start difference. First operand has 233 places, 189 transitions, 2071 flow. Second operand 11 states and 106 transitions. [2024-06-04 16:06:55,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 202 transitions, 2542 flow [2024-06-04 16:06:56,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 202 transitions, 2472 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 16:06:56,144 INFO L231 Difference]: Finished difference. Result has 237 places, 190 transitions, 2087 flow [2024-06-04 16:06:56,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2087, PETRI_PLACES=237, PETRI_TRANSITIONS=190} [2024-06-04 16:06:56,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-04 16:06:56,145 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 190 transitions, 2087 flow [2024-06-04 16:06:56,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:06:56,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:06:56,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:06:56,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 16:06:56,145 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:06:56,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:06:56,146 INFO L85 PathProgramCache]: Analyzing trace with hash 845659763, now seen corresponding path program 9 times [2024-06-04 16:06:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:06:56,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455968393] [2024-06-04 16:06:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:06:56,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:06:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:07:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:07:02,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:07:02,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455968393] [2024-06-04 16:07:02,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455968393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:07:02,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:07:02,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:07:02,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974764423] [2024-06-04 16:07:02,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:07:02,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:07:02,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:07:02,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:07:02,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:07:02,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:07:02,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 190 transitions, 2087 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:02,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:07:02,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:07:02,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:07:03,211 INFO L124 PetriNetUnfolderBase]: 543/983 cut-off events. [2024-06-04 16:07:03,211 INFO L125 PetriNetUnfolderBase]: For 98634/98636 co-relation queries the response was YES. [2024-06-04 16:07:03,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7020 conditions, 983 events. 543/983 cut-off events. For 98634/98636 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4972 event pairs, 96 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 6901. Up to 556 conditions per place. [2024-06-04 16:07:03,219 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 89 changer transitions 0/208 dead transitions. [2024-06-04 16:07:03,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 208 transitions, 2801 flow [2024-06-04 16:07:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:07:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:07:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 16:07:03,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 16:07:03,220 INFO L175 Difference]: Start difference. First operand has 237 places, 190 transitions, 2087 flow. Second operand 10 states and 118 transitions. [2024-06-04 16:07:03,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 208 transitions, 2801 flow [2024-06-04 16:07:03,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 208 transitions, 2731 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 16:07:03,440 INFO L231 Difference]: Finished difference. Result has 238 places, 192 transitions, 2272 flow [2024-06-04 16:07:03,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2272, PETRI_PLACES=238, PETRI_TRANSITIONS=192} [2024-06-04 16:07:03,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-04 16:07:03,441 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 192 transitions, 2272 flow [2024-06-04 16:07:03,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:03,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:07:03,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:07:03,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 16:07:03,441 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:07:03,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:07:03,441 INFO L85 PathProgramCache]: Analyzing trace with hash 313064107, now seen corresponding path program 10 times [2024-06-04 16:07:03,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:07:03,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269266917] [2024-06-04 16:07:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:07:03,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:07:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:07:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:07:08,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:07:08,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269266917] [2024-06-04 16:07:08,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269266917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:07:08,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:07:08,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:07:08,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035472914] [2024-06-04 16:07:08,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:07:08,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:07:08,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:07:08,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:07:08,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:07:08,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:07:08,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 192 transitions, 2272 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:08,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:07:08,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:07:08,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:07:09,007 INFO L124 PetriNetUnfolderBase]: 554/1001 cut-off events. [2024-06-04 16:07:09,007 INFO L125 PetriNetUnfolderBase]: For 105611/105613 co-relation queries the response was YES. [2024-06-04 16:07:09,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1001 events. 554/1001 cut-off events. For 105611/105613 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5058 event pairs, 84 based on Foata normal form. 2/1003 useless extension candidates. Maximal degree in co-relation 7380. Up to 820 conditions per place. [2024-06-04 16:07:09,016 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 48 changer transitions 0/214 dead transitions. [2024-06-04 16:07:09,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 214 transitions, 3088 flow [2024-06-04 16:07:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:07:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:07:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 16:07:09,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 16:07:09,017 INFO L175 Difference]: Start difference. First operand has 238 places, 192 transitions, 2272 flow. Second operand 11 states and 122 transitions. [2024-06-04 16:07:09,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 214 transitions, 3088 flow [2024-06-04 16:07:09,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 214 transitions, 2839 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-04 16:07:09,288 INFO L231 Difference]: Finished difference. Result has 241 places, 196 transitions, 2283 flow [2024-06-04 16:07:09,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2283, PETRI_PLACES=241, PETRI_TRANSITIONS=196} [2024-06-04 16:07:09,288 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-04 16:07:09,288 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 196 transitions, 2283 flow [2024-06-04 16:07:09,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:09,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:07:09,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:07:09,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 16:07:09,289 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:07:09,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:07:09,289 INFO L85 PathProgramCache]: Analyzing trace with hash 313064417, now seen corresponding path program 6 times [2024-06-04 16:07:09,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:07:09,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661777562] [2024-06-04 16:07:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:07:09,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:07:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:07:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:07:14,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:07:14,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661777562] [2024-06-04 16:07:14,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661777562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:07:14,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:07:14,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:07:14,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422122975] [2024-06-04 16:07:14,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:07:14,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:07:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:07:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:07:14,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:07:14,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:07:14,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 196 transitions, 2283 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:14,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:07:14,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:07:14,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:07:14,940 INFO L124 PetriNetUnfolderBase]: 551/996 cut-off events. [2024-06-04 16:07:14,940 INFO L125 PetriNetUnfolderBase]: For 99033/99035 co-relation queries the response was YES. [2024-06-04 16:07:14,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 996 events. 551/996 cut-off events. For 99033/99035 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5038 event pairs, 99 based on Foata normal form. 2/998 useless extension candidates. Maximal degree in co-relation 7005. Up to 897 conditions per place. [2024-06-04 16:07:14,948 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 35 changer transitions 0/208 dead transitions. [2024-06-04 16:07:14,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 208 transitions, 2725 flow [2024-06-04 16:07:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:07:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:07:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-04 16:07:14,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-04 16:07:14,949 INFO L175 Difference]: Start difference. First operand has 241 places, 196 transitions, 2283 flow. Second operand 11 states and 114 transitions. [2024-06-04 16:07:14,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 208 transitions, 2725 flow [2024-06-04 16:07:15,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 208 transitions, 2588 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-04 16:07:15,209 INFO L231 Difference]: Finished difference. Result has 244 places, 196 transitions, 2220 flow [2024-06-04 16:07:15,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2220, PETRI_PLACES=244, PETRI_TRANSITIONS=196} [2024-06-04 16:07:15,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 16:07:15,209 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 196 transitions, 2220 flow [2024-06-04 16:07:15,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:15,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:07:15,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:07:15,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 16:07:15,210 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:07:15,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:07:15,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1777233011, now seen corresponding path program 11 times [2024-06-04 16:07:15,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:07:15,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457978445] [2024-06-04 16:07:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:07:15,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:07:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:07:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:07:21,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:07:21,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457978445] [2024-06-04 16:07:21,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457978445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:07:21,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:07:21,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:07:21,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848822513] [2024-06-04 16:07:21,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:07:21,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:07:21,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:07:21,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:07:21,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:07:21,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:07:21,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 196 transitions, 2220 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:21,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:07:21,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:07:21,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:07:22,262 INFO L124 PetriNetUnfolderBase]: 547/988 cut-off events. [2024-06-04 16:07:22,262 INFO L125 PetriNetUnfolderBase]: For 90018/90018 co-relation queries the response was YES. [2024-06-04 16:07:22,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6834 conditions, 988 events. 547/988 cut-off events. For 90018/90018 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4960 event pairs, 95 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 6712. Up to 933 conditions per place. [2024-06-04 16:07:22,270 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 22 changer transitions 0/209 dead transitions. [2024-06-04 16:07:22,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 209 transitions, 2673 flow [2024-06-04 16:07:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:07:22,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:07:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-04 16:07:22,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 16:07:22,272 INFO L175 Difference]: Start difference. First operand has 244 places, 196 transitions, 2220 flow. Second operand 11 states and 110 transitions. [2024-06-04 16:07:22,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 209 transitions, 2673 flow [2024-06-04 16:07:22,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 209 transitions, 2512 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-04 16:07:22,524 INFO L231 Difference]: Finished difference. Result has 244 places, 196 transitions, 2109 flow [2024-06-04 16:07:22,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2109, PETRI_PLACES=244, PETRI_TRANSITIONS=196} [2024-06-04 16:07:22,524 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 16:07:22,524 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 196 transitions, 2109 flow [2024-06-04 16:07:22,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:22,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:07:22,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:07:22,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 16:07:22,525 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:07:22,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:07:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash -40254495, now seen corresponding path program 7 times [2024-06-04 16:07:22,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:07:22,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882279192] [2024-06-04 16:07:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:07:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:07:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:07:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:07:27,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:07:27,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882279192] [2024-06-04 16:07:27,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882279192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:07:27,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:07:27,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:07:27,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263701040] [2024-06-04 16:07:27,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:07:27,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:07:27,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:07:27,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:07:27,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:07:27,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:07:27,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 196 transitions, 2109 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:27,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:07:27,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:07:27,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:07:28,139 INFO L124 PetriNetUnfolderBase]: 544/983 cut-off events. [2024-06-04 16:07:28,139 INFO L125 PetriNetUnfolderBase]: For 82819/82819 co-relation queries the response was YES. [2024-06-04 16:07:28,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6445 conditions, 983 events. 544/983 cut-off events. For 82819/82819 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4950 event pairs, 93 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 6324. Up to 938 conditions per place. [2024-06-04 16:07:28,147 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 20 changer transitions 0/208 dead transitions. [2024-06-04 16:07:28,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 208 transitions, 2550 flow [2024-06-04 16:07:28,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:07:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:07:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-04 16:07:28,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-04 16:07:28,148 INFO L175 Difference]: Start difference. First operand has 244 places, 196 transitions, 2109 flow. Second operand 11 states and 106 transitions. [2024-06-04 16:07:28,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 208 transitions, 2550 flow [2024-06-04 16:07:28,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 208 transitions, 2464 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-04 16:07:28,367 INFO L231 Difference]: Finished difference. Result has 245 places, 196 transitions, 2069 flow [2024-06-04 16:07:28,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2023, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2069, PETRI_PLACES=245, PETRI_TRANSITIONS=196} [2024-06-04 16:07:28,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-04 16:07:28,367 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 196 transitions, 2069 flow [2024-06-04 16:07:28,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:28,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:07:28,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:07:28,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 16:07:28,368 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:07:28,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:07:28,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1424153109, now seen corresponding path program 12 times [2024-06-04 16:07:28,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:07:28,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320701331] [2024-06-04 16:07:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:07:28,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:07:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:07:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:07:33,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:07:33,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320701331] [2024-06-04 16:07:33,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320701331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:07:33,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:07:33,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:07:33,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776919724] [2024-06-04 16:07:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:07:33,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:07:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:07:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:07:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:07:33,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:07:33,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 196 transitions, 2069 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:33,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:07:33,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:07:33,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:07:33,948 INFO L124 PetriNetUnfolderBase]: 550/995 cut-off events. [2024-06-04 16:07:33,948 INFO L125 PetriNetUnfolderBase]: For 84214/84216 co-relation queries the response was YES. [2024-06-04 16:07:33,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6482 conditions, 995 events. 550/995 cut-off events. For 84214/84216 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5062 event pairs, 81 based on Foata normal form. 2/997 useless extension candidates. Maximal degree in co-relation 6360. Up to 810 conditions per place. [2024-06-04 16:07:33,956 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 165 selfloop transitions, 45 changer transitions 0/212 dead transitions. [2024-06-04 16:07:33,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 212 transitions, 2779 flow [2024-06-04 16:07:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:07:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:07:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 16:07:33,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 16:07:33,957 INFO L175 Difference]: Start difference. First operand has 245 places, 196 transitions, 2069 flow. Second operand 9 states and 107 transitions. [2024-06-04 16:07:33,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 212 transitions, 2779 flow [2024-06-04 16:07:34,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 212 transitions, 2733 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 16:07:34,190 INFO L231 Difference]: Finished difference. Result has 244 places, 198 transitions, 2181 flow [2024-06-04 16:07:34,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2181, PETRI_PLACES=244, PETRI_TRANSITIONS=198} [2024-06-04 16:07:34,190 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 16:07:34,191 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 198 transitions, 2181 flow [2024-06-04 16:07:34,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:34,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:07:34,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:07:34,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 16:07:34,191 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:07:34,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:07:34,191 INFO L85 PathProgramCache]: Analyzing trace with hash 306389063, now seen corresponding path program 13 times [2024-06-04 16:07:34,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:07:34,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464788023] [2024-06-04 16:07:34,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:07:34,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:07:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:07:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:07:37,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:07:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464788023] [2024-06-04 16:07:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464788023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:07:37,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:07:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:07:37,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542401461] [2024-06-04 16:07:37,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:07:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:07:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:07:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:07:37,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:07:37,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:07:37,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 198 transitions, 2181 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:37,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:07:37,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:07:37,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:07:38,364 INFO L124 PetriNetUnfolderBase]: 554/1003 cut-off events. [2024-06-04 16:07:38,365 INFO L125 PetriNetUnfolderBase]: For 85488/85490 co-relation queries the response was YES. [2024-06-04 16:07:38,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6666 conditions, 1003 events. 554/1003 cut-off events. For 85488/85490 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5094 event pairs, 87 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 6543. Up to 882 conditions per place. [2024-06-04 16:07:38,373 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 178 selfloop transitions, 31 changer transitions 0/211 dead transitions. [2024-06-04 16:07:38,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 211 transitions, 2685 flow [2024-06-04 16:07:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:07:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:07:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 16:07:38,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 16:07:38,375 INFO L175 Difference]: Start difference. First operand has 244 places, 198 transitions, 2181 flow. Second operand 9 states and 97 transitions. [2024-06-04 16:07:38,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 211 transitions, 2685 flow [2024-06-04 16:07:38,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 211 transitions, 2558 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-04 16:07:38,628 INFO L231 Difference]: Finished difference. Result has 246 places, 199 transitions, 2170 flow [2024-06-04 16:07:38,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2170, PETRI_PLACES=246, PETRI_TRANSITIONS=199} [2024-06-04 16:07:38,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-04 16:07:38,629 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 199 transitions, 2170 flow [2024-06-04 16:07:38,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:38,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:07:38,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:07:38,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 16:07:38,629 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:07:38,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:07:38,630 INFO L85 PathProgramCache]: Analyzing trace with hash 306384413, now seen corresponding path program 14 times [2024-06-04 16:07:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:07:38,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442632370] [2024-06-04 16:07:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:07:38,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:07:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:07:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:07:41,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:07:41,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442632370] [2024-06-04 16:07:41,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442632370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:07:41,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:07:41,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:07:41,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151305825] [2024-06-04 16:07:41,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:07:41,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:07:41,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:07:41,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:07:41,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:07:42,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:07:42,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 199 transitions, 2170 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:42,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:07:42,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:07:42,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:07:42,473 INFO L124 PetriNetUnfolderBase]: 551/998 cut-off events. [2024-06-04 16:07:42,474 INFO L125 PetriNetUnfolderBase]: For 76994/76996 co-relation queries the response was YES. [2024-06-04 16:07:42,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6347 conditions, 998 events. 551/998 cut-off events. For 76994/76996 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5073 event pairs, 84 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 6224. Up to 877 conditions per place. [2024-06-04 16:07:42,482 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 179 selfloop transitions, 30 changer transitions 0/211 dead transitions. [2024-06-04 16:07:42,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 211 transitions, 2622 flow [2024-06-04 16:07:42,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:07:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:07:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 16:07:42,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 16:07:42,483 INFO L175 Difference]: Start difference. First operand has 246 places, 199 transitions, 2170 flow. Second operand 9 states and 96 transitions. [2024-06-04 16:07:42,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 211 transitions, 2622 flow [2024-06-04 16:07:42,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 211 transitions, 2516 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 16:07:42,740 INFO L231 Difference]: Finished difference. Result has 248 places, 199 transitions, 2128 flow [2024-06-04 16:07:42,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2128, PETRI_PLACES=248, PETRI_TRANSITIONS=199} [2024-06-04 16:07:42,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-04 16:07:42,740 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 199 transitions, 2128 flow [2024-06-04 16:07:42,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:42,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:07:42,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:07:42,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 16:07:42,741 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:07:42,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:07:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash 306568987, now seen corresponding path program 13 times [2024-06-04 16:07:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:07:42,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828541808] [2024-06-04 16:07:42,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:07:42,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:07:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:07:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:07:47,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:07:47,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828541808] [2024-06-04 16:07:47,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828541808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:07:47,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:07:47,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:07:47,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050506533] [2024-06-04 16:07:47,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:07:47,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:07:47,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:07:47,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:07:47,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:07:47,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:07:47,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 199 transitions, 2128 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:47,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:07:47,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:07:47,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:07:48,321 INFO L124 PetriNetUnfolderBase]: 547/992 cut-off events. [2024-06-04 16:07:48,321 INFO L125 PetriNetUnfolderBase]: For 69252/69254 co-relation queries the response was YES. [2024-06-04 16:07:48,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 992 events. 547/992 cut-off events. For 69252/69254 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5037 event pairs, 86 based on Foata normal form. 2/994 useless extension candidates. Maximal degree in co-relation 5921. Up to 861 conditions per place. [2024-06-04 16:07:48,333 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 177 selfloop transitions, 34 changer transitions 0/213 dead transitions. [2024-06-04 16:07:48,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 213 transitions, 2600 flow [2024-06-04 16:07:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:07:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:07:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 16:07:48,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 16:07:48,335 INFO L175 Difference]: Start difference. First operand has 248 places, 199 transitions, 2128 flow. Second operand 10 states and 107 transitions. [2024-06-04 16:07:48,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 213 transitions, 2600 flow [2024-06-04 16:07:48,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 213 transitions, 2411 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-04 16:07:48,558 INFO L231 Difference]: Finished difference. Result has 250 places, 199 transitions, 2012 flow [2024-06-04 16:07:48,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2012, PETRI_PLACES=250, PETRI_TRANSITIONS=199} [2024-06-04 16:07:48,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-04 16:07:48,559 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 199 transitions, 2012 flow [2024-06-04 16:07:48,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:48,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:07:48,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:07:48,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 16:07:48,559 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:07:48,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:07:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1315265807, now seen corresponding path program 1 times [2024-06-04 16:07:48,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:07:48,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479330989] [2024-06-04 16:07:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:07:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:07:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:07:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:07:53,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:07:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479330989] [2024-06-04 16:07:53,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479330989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:07:53,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:07:53,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:07:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552651599] [2024-06-04 16:07:53,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:07:53,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:07:53,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:07:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:07:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:07:53,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:07:53,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 199 transitions, 2012 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:53,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:07:53,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:07:53,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:07:54,276 INFO L124 PetriNetUnfolderBase]: 603/1098 cut-off events. [2024-06-04 16:07:54,276 INFO L125 PetriNetUnfolderBase]: For 69797/69797 co-relation queries the response was YES. [2024-06-04 16:07:54,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6365 conditions, 1098 events. 603/1098 cut-off events. For 69797/69797 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5694 event pairs, 109 based on Foata normal form. 2/1100 useless extension candidates. Maximal degree in co-relation 6240. Up to 951 conditions per place. [2024-06-04 16:07:54,286 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 29 changer transitions 0/239 dead transitions. [2024-06-04 16:07:54,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 239 transitions, 2738 flow [2024-06-04 16:07:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:07:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:07:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 16:07:54,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 16:07:54,287 INFO L175 Difference]: Start difference. First operand has 250 places, 199 transitions, 2012 flow. Second operand 11 states and 117 transitions. [2024-06-04 16:07:54,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 239 transitions, 2738 flow [2024-06-04 16:07:54,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 239 transitions, 2643 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 16:07:54,516 INFO L231 Difference]: Finished difference. Result has 257 places, 215 transitions, 2176 flow [2024-06-04 16:07:54,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2176, PETRI_PLACES=257, PETRI_TRANSITIONS=215} [2024-06-04 16:07:54,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-04 16:07:54,517 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 215 transitions, 2176 flow [2024-06-04 16:07:54,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:07:54,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:07:54,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:07:54,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 16:07:54,518 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:07:54,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:07:54,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1184575547, now seen corresponding path program 2 times [2024-06-04 16:07:54,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:07:54,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952002577] [2024-06-04 16:07:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:07:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:07:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:08:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:08:00,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:08:00,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952002577] [2024-06-04 16:08:00,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952002577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:08:00,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:08:00,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:08:00,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459196339] [2024-06-04 16:08:00,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:08:00,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:08:00,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:08:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:08:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:08:01,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:08:01,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 215 transitions, 2176 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:01,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:08:01,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:08:01,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:08:01,469 INFO L124 PetriNetUnfolderBase]: 635/1161 cut-off events. [2024-06-04 16:08:01,470 INFO L125 PetriNetUnfolderBase]: For 71677/71677 co-relation queries the response was YES. [2024-06-04 16:08:01,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6740 conditions, 1161 events. 635/1161 cut-off events. For 71677/71677 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6140 event pairs, 104 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 6609. Up to 961 conditions per place. [2024-06-04 16:08:01,480 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 37 changer transitions 0/249 dead transitions. [2024-06-04 16:08:01,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 249 transitions, 2883 flow [2024-06-04 16:08:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:08:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:08:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 16:08:01,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 16:08:01,481 INFO L175 Difference]: Start difference. First operand has 257 places, 215 transitions, 2176 flow. Second operand 11 states and 117 transitions. [2024-06-04 16:08:01,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 249 transitions, 2883 flow [2024-06-04 16:08:01,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 249 transitions, 2829 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-04 16:08:01,693 INFO L231 Difference]: Finished difference. Result has 271 places, 225 transitions, 2368 flow [2024-06-04 16:08:01,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2368, PETRI_PLACES=271, PETRI_TRANSITIONS=225} [2024-06-04 16:08:01,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-04 16:08:01,694 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 225 transitions, 2368 flow [2024-06-04 16:08:01,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:01,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:08:01,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:08:01,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 16:08:01,695 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:08:01,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:08:01,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2055420863, now seen corresponding path program 3 times [2024-06-04 16:08:01,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:08:01,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107992004] [2024-06-04 16:08:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:08:01,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:08:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:08:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:08:06,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:08:06,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107992004] [2024-06-04 16:08:06,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107992004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:08:06,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:08:06,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:08:06,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937425467] [2024-06-04 16:08:06,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:08:06,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:08:06,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:08:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:08:06,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:08:06,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:08:06,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 225 transitions, 2368 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:06,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:08:06,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:08:06,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:08:06,856 INFO L124 PetriNetUnfolderBase]: 639/1169 cut-off events. [2024-06-04 16:08:06,857 INFO L125 PetriNetUnfolderBase]: For 73672/73672 co-relation queries the response was YES. [2024-06-04 16:08:06,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6945 conditions, 1169 events. 639/1169 cut-off events. For 73672/73672 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6213 event pairs, 79 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 6807. Up to 907 conditions per place. [2024-06-04 16:08:06,867 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 198 selfloop transitions, 42 changer transitions 0/242 dead transitions. [2024-06-04 16:08:06,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 242 transitions, 2922 flow [2024-06-04 16:08:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:08:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:08:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-04 16:08:06,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-04 16:08:06,868 INFO L175 Difference]: Start difference. First operand has 271 places, 225 transitions, 2368 flow. Second operand 10 states and 102 transitions. [2024-06-04 16:08:06,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 242 transitions, 2922 flow [2024-06-04 16:08:07,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 242 transitions, 2852 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-04 16:08:07,143 INFO L231 Difference]: Finished difference. Result has 278 places, 226 transitions, 2430 flow [2024-06-04 16:08:07,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2300, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2430, PETRI_PLACES=278, PETRI_TRANSITIONS=226} [2024-06-04 16:08:07,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-04 16:08:07,144 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 226 transitions, 2430 flow [2024-06-04 16:08:07,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:07,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:08:07,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:08:07,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 16:08:07,144 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:08:07,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:08:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1155868791, now seen corresponding path program 4 times [2024-06-04 16:08:07,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:08:07,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061901146] [2024-06-04 16:08:07,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:08:07,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:08:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:08:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:08:12,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:08:12,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061901146] [2024-06-04 16:08:12,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061901146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:08:12,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:08:12,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:08:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381827901] [2024-06-04 16:08:12,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:08:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:08:12,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:08:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:08:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:08:12,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:08:12,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 226 transitions, 2430 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:12,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:08:12,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:08:12,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:08:13,099 INFO L124 PetriNetUnfolderBase]: 650/1190 cut-off events. [2024-06-04 16:08:13,099 INFO L125 PetriNetUnfolderBase]: For 83288/83288 co-relation queries the response was YES. [2024-06-04 16:08:13,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7367 conditions, 1190 events. 650/1190 cut-off events. For 83288/83288 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6367 event pairs, 110 based on Foata normal form. 2/1192 useless extension candidates. Maximal degree in co-relation 7228. Up to 1013 conditions per place. [2024-06-04 16:08:13,111 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 43 changer transitions 0/244 dead transitions. [2024-06-04 16:08:13,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 244 transitions, 3222 flow [2024-06-04 16:08:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:08:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:08:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 16:08:13,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 16:08:13,115 INFO L175 Difference]: Start difference. First operand has 278 places, 226 transitions, 2430 flow. Second operand 10 states and 112 transitions. [2024-06-04 16:08:13,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 244 transitions, 3222 flow [2024-06-04 16:08:13,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 244 transitions, 3102 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 16:08:13,486 INFO L231 Difference]: Finished difference. Result has 280 places, 228 transitions, 2480 flow [2024-06-04 16:08:13,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2480, PETRI_PLACES=280, PETRI_TRANSITIONS=228} [2024-06-04 16:08:13,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-04 16:08:13,486 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 228 transitions, 2480 flow [2024-06-04 16:08:13,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:13,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:08:13,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:08:13,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 16:08:13,487 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:08:13,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:08:13,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1580500299, now seen corresponding path program 5 times [2024-06-04 16:08:13,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:08:13,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249337372] [2024-06-04 16:08:13,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:08:13,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:08:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:08:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:08:17,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:08:17,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249337372] [2024-06-04 16:08:17,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249337372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:08:17,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:08:17,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:08:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35393167] [2024-06-04 16:08:17,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:08:17,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:08:17,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:08:17,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:08:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:08:18,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:08:18,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 228 transitions, 2480 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:18,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:08:18,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:08:18,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:08:18,498 INFO L124 PetriNetUnfolderBase]: 647/1185 cut-off events. [2024-06-04 16:08:18,499 INFO L125 PetriNetUnfolderBase]: For 75917/75917 co-relation queries the response was YES. [2024-06-04 16:08:18,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7066 conditions, 1185 events. 647/1185 cut-off events. For 75917/75917 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6325 event pairs, 111 based on Foata normal form. 2/1187 useless extension candidates. Maximal degree in co-relation 6926. Up to 1027 conditions per place. [2024-06-04 16:08:18,510 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 198 selfloop transitions, 43 changer transitions 0/243 dead transitions. [2024-06-04 16:08:18,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 243 transitions, 3008 flow [2024-06-04 16:08:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:08:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:08:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 16:08:18,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 16:08:18,512 INFO L175 Difference]: Start difference. First operand has 280 places, 228 transitions, 2480 flow. Second operand 10 states and 111 transitions. [2024-06-04 16:08:18,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 243 transitions, 3008 flow [2024-06-04 16:08:18,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 243 transitions, 2881 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-04 16:08:18,847 INFO L231 Difference]: Finished difference. Result has 284 places, 228 transitions, 2445 flow [2024-06-04 16:08:18,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2445, PETRI_PLACES=284, PETRI_TRANSITIONS=228} [2024-06-04 16:08:18,848 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 16:08:18,848 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 228 transitions, 2445 flow [2024-06-04 16:08:18,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:18,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:08:18,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:08:18,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 16:08:18,849 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:08:18,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:08:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1580500082, now seen corresponding path program 1 times [2024-06-04 16:08:18,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:08:18,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601159747] [2024-06-04 16:08:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:08:18,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:08:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:08:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:08:23,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:08:23,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601159747] [2024-06-04 16:08:23,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601159747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:08:23,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:08:23,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:08:23,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677063637] [2024-06-04 16:08:23,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:08:23,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:08:23,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:08:23,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:08:23,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:08:23,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:08:23,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 228 transitions, 2445 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:23,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:08:23,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:08:23,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:08:24,205 INFO L124 PetriNetUnfolderBase]: 645/1182 cut-off events. [2024-06-04 16:08:24,205 INFO L125 PetriNetUnfolderBase]: For 67293/67293 co-relation queries the response was YES. [2024-06-04 16:08:24,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6883 conditions, 1182 events. 645/1182 cut-off events. For 67293/67293 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6296 event pairs, 110 based on Foata normal form. 1/1183 useless extension candidates. Maximal degree in co-relation 6741. Up to 1022 conditions per place. [2024-06-04 16:08:24,217 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 43 changer transitions 0/241 dead transitions. [2024-06-04 16:08:24,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 241 transitions, 2965 flow [2024-06-04 16:08:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:08:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:08:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 16:08:24,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 16:08:24,218 INFO L175 Difference]: Start difference. First operand has 284 places, 228 transitions, 2445 flow. Second operand 9 states and 104 transitions. [2024-06-04 16:08:24,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 241 transitions, 2965 flow [2024-06-04 16:08:24,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 241 transitions, 2852 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 16:08:24,502 INFO L231 Difference]: Finished difference. Result has 284 places, 228 transitions, 2429 flow [2024-06-04 16:08:24,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2429, PETRI_PLACES=284, PETRI_TRANSITIONS=228} [2024-06-04 16:08:24,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 16:08:24,503 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 228 transitions, 2429 flow [2024-06-04 16:08:24,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:24,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:08:24,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:08:24,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 16:08:24,504 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:08:24,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:08:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1152149721, now seen corresponding path program 6 times [2024-06-04 16:08:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:08:24,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511774505] [2024-06-04 16:08:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:08:24,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:08:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:08:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:08:28,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:08:28,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511774505] [2024-06-04 16:08:28,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511774505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:08:28,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:08:28,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:08:28,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981334947] [2024-06-04 16:08:28,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:08:28,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:08:28,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:08:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:08:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:08:28,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:08:28,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 228 transitions, 2429 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:28,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:08:28,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:08:28,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:08:29,322 INFO L124 PetriNetUnfolderBase]: 649/1190 cut-off events. [2024-06-04 16:08:29,322 INFO L125 PetriNetUnfolderBase]: For 73646/73646 co-relation queries the response was YES. [2024-06-04 16:08:29,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6971 conditions, 1190 events. 649/1190 cut-off events. For 73646/73646 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6372 event pairs, 116 based on Foata normal form. 2/1192 useless extension candidates. Maximal degree in co-relation 6828. Up to 1042 conditions per place. [2024-06-04 16:08:29,334 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 32 changer transitions 0/244 dead transitions. [2024-06-04 16:08:29,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 244 transitions, 2985 flow [2024-06-04 16:08:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:08:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:08:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 16:08:29,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 16:08:29,335 INFO L175 Difference]: Start difference. First operand has 284 places, 228 transitions, 2429 flow. Second operand 10 states and 105 transitions. [2024-06-04 16:08:29,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 244 transitions, 2985 flow [2024-06-04 16:08:29,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 244 transitions, 2858 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 16:08:29,679 INFO L231 Difference]: Finished difference. Result has 286 places, 229 transitions, 2410 flow [2024-06-04 16:08:29,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2302, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2410, PETRI_PLACES=286, PETRI_TRANSITIONS=229} [2024-06-04 16:08:29,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-04 16:08:29,680 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 229 transitions, 2410 flow [2024-06-04 16:08:29,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:29,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:08:29,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:08:29,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 16:08:29,680 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:08:29,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:08:29,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1889479997, now seen corresponding path program 7 times [2024-06-04 16:08:29,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:08:29,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768209948] [2024-06-04 16:08:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:08:29,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:08:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:08:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:08:35,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:08:35,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768209948] [2024-06-04 16:08:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768209948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:08:35,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:08:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:08:35,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046204735] [2024-06-04 16:08:35,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:08:35,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:08:35,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:08:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:08:35,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:08:35,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:08:35,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 229 transitions, 2410 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:35,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:08:35,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:08:35,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:08:36,109 INFO L124 PetriNetUnfolderBase]: 653/1198 cut-off events. [2024-06-04 16:08:36,109 INFO L125 PetriNetUnfolderBase]: For 75793/75793 co-relation queries the response was YES. [2024-06-04 16:08:36,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7037 conditions, 1198 events. 653/1198 cut-off events. For 75793/75793 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6434 event pairs, 110 based on Foata normal form. 2/1200 useless extension candidates. Maximal degree in co-relation 6893. Up to 1056 conditions per place. [2024-06-04 16:08:36,121 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 34 changer transitions 0/245 dead transitions. [2024-06-04 16:08:36,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 245 transitions, 2974 flow [2024-06-04 16:08:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:08:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:08:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 16:08:36,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 16:08:36,122 INFO L175 Difference]: Start difference. First operand has 286 places, 229 transitions, 2410 flow. Second operand 10 states and 107 transitions. [2024-06-04 16:08:36,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 245 transitions, 2974 flow [2024-06-04 16:08:36,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 245 transitions, 2876 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 16:08:36,494 INFO L231 Difference]: Finished difference. Result has 288 places, 230 transitions, 2426 flow [2024-06-04 16:08:36,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2312, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2426, PETRI_PLACES=288, PETRI_TRANSITIONS=230} [2024-06-04 16:08:36,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-04 16:08:36,494 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 230 transitions, 2426 flow [2024-06-04 16:08:36,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:36,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:08:36,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:08:36,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 16:08:36,495 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:08:36,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:08:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash -66821027, now seen corresponding path program 8 times [2024-06-04 16:08:36,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:08:36,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220166298] [2024-06-04 16:08:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:08:36,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:08:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:08:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:08:41,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:08:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220166298] [2024-06-04 16:08:41,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220166298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:08:41,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:08:41,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:08:41,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712001548] [2024-06-04 16:08:41,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:08:41,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:08:41,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:08:41,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:08:41,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:08:41,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:08:41,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 230 transitions, 2426 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:41,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:08:41,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:08:41,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:08:42,161 INFO L124 PetriNetUnfolderBase]: 657/1205 cut-off events. [2024-06-04 16:08:42,161 INFO L125 PetriNetUnfolderBase]: For 77504/77506 co-relation queries the response was YES. [2024-06-04 16:08:42,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7090 conditions, 1205 events. 657/1205 cut-off events. For 77504/77506 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6481 event pairs, 81 based on Foata normal form. 4/1209 useless extension candidates. Maximal degree in co-relation 6945. Up to 1030 conditions per place. [2024-06-04 16:08:42,173 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 35 changer transitions 0/249 dead transitions. [2024-06-04 16:08:42,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 249 transitions, 3013 flow [2024-06-04 16:08:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:08:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:08:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 16:08:42,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 16:08:42,174 INFO L175 Difference]: Start difference. First operand has 288 places, 230 transitions, 2426 flow. Second operand 10 states and 108 transitions. [2024-06-04 16:08:42,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 249 transitions, 3013 flow [2024-06-04 16:08:42,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 249 transitions, 2909 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 16:08:42,575 INFO L231 Difference]: Finished difference. Result has 290 places, 231 transitions, 2440 flow [2024-06-04 16:08:42,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2440, PETRI_PLACES=290, PETRI_TRANSITIONS=231} [2024-06-04 16:08:42,576 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-04 16:08:42,576 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 231 transitions, 2440 flow [2024-06-04 16:08:42,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:42,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:08:42,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:08:42,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 16:08:42,576 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:08:42,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:08:42,577 INFO L85 PathProgramCache]: Analyzing trace with hash -63096377, now seen corresponding path program 9 times [2024-06-04 16:08:42,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:08:42,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593251586] [2024-06-04 16:08:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:08:42,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:08:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:08:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:08:48,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:08:48,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593251586] [2024-06-04 16:08:48,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593251586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:08:48,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:08:48,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:08:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869191302] [2024-06-04 16:08:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:08:48,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:08:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:08:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:08:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:08:48,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:08:48,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 231 transitions, 2440 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:48,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:08:48,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:08:48,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:08:49,349 INFO L124 PetriNetUnfolderBase]: 661/1213 cut-off events. [2024-06-04 16:08:49,349 INFO L125 PetriNetUnfolderBase]: For 79253/79255 co-relation queries the response was YES. [2024-06-04 16:08:49,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7154 conditions, 1213 events. 661/1213 cut-off events. For 79253/79255 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6584 event pairs, 116 based on Foata normal form. 4/1217 useless extension candidates. Maximal degree in co-relation 7008. Up to 1073 conditions per place. [2024-06-04 16:08:49,362 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 40 changer transitions 0/250 dead transitions. [2024-06-04 16:08:49,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 250 transitions, 3043 flow [2024-06-04 16:08:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:08:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:08:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 16:08:49,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 16:08:49,363 INFO L175 Difference]: Start difference. First operand has 290 places, 231 transitions, 2440 flow. Second operand 10 states and 111 transitions. [2024-06-04 16:08:49,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 250 transitions, 3043 flow [2024-06-04 16:08:49,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 250 transitions, 2935 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 16:08:49,935 INFO L231 Difference]: Finished difference. Result has 292 places, 232 transitions, 2463 flow [2024-06-04 16:08:49,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2463, PETRI_PLACES=292, PETRI_TRANSITIONS=232} [2024-06-04 16:08:49,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-04 16:08:49,935 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 232 transitions, 2463 flow [2024-06-04 16:08:49,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:49,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:08:49,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:08:49,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 16:08:49,936 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:08:49,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:08:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1208640626, now seen corresponding path program 2 times [2024-06-04 16:08:49,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:08:49,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493437624] [2024-06-04 16:08:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:08:49,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:08:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:08:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:08:55,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:08:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493437624] [2024-06-04 16:08:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493437624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:08:55,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:08:55,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:08:55,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390679722] [2024-06-04 16:08:55,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:08:55,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:08:55,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:08:55,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:08:55,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:08:55,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:08:55,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 232 transitions, 2463 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:55,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:08:55,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:08:55,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:08:55,987 INFO L124 PetriNetUnfolderBase]: 659/1210 cut-off events. [2024-06-04 16:08:55,987 INFO L125 PetriNetUnfolderBase]: For 70096/70098 co-relation queries the response was YES. [2024-06-04 16:08:55,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 1210 events. 659/1210 cut-off events. For 70096/70098 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6547 event pairs, 116 based on Foata normal form. 3/1213 useless extension candidates. Maximal degree in co-relation 6816. Up to 1067 conditions per place. [2024-06-04 16:08:56,000 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 43 changer transitions 0/250 dead transitions. [2024-06-04 16:08:56,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 250 transitions, 3026 flow [2024-06-04 16:08:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:08:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:08:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 16:08:56,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 16:08:56,001 INFO L175 Difference]: Start difference. First operand has 292 places, 232 transitions, 2463 flow. Second operand 10 states and 112 transitions. [2024-06-04 16:08:56,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 250 transitions, 3026 flow [2024-06-04 16:08:56,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 250 transitions, 2895 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 16:08:56,389 INFO L231 Difference]: Finished difference. Result has 294 places, 232 transitions, 2426 flow [2024-06-04 16:08:56,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2426, PETRI_PLACES=294, PETRI_TRANSITIONS=232} [2024-06-04 16:08:56,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-04 16:08:56,389 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 232 transitions, 2426 flow [2024-06-04 16:08:56,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:08:56,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:08:56,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:08:56,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 16:08:56,390 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:08:56,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:08:56,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1208790573, now seen corresponding path program 10 times [2024-06-04 16:08:56,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:08:56,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519918596] [2024-06-04 16:08:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:08:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:08:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:09:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:09:01,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:09:01,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519918596] [2024-06-04 16:09:01,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519918596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:09:01,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:09:01,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:09:01,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892505225] [2024-06-04 16:09:01,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:09:01,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:09:01,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:09:01,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:09:01,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:09:01,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:09:01,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 232 transitions, 2426 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:01,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:09:01,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:09:01,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:09:02,321 INFO L124 PetriNetUnfolderBase]: 663/1218 cut-off events. [2024-06-04 16:09:02,321 INFO L125 PetriNetUnfolderBase]: For 76338/76340 co-relation queries the response was YES. [2024-06-04 16:09:02,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7004 conditions, 1218 events. 663/1218 cut-off events. For 76338/76340 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6600 event pairs, 118 based on Foata normal form. 4/1222 useless extension candidates. Maximal degree in co-relation 6856. Up to 1084 conditions per place. [2024-06-04 16:09:02,332 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 215 selfloop transitions, 34 changer transitions 0/251 dead transitions. [2024-06-04 16:09:02,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 251 transitions, 3025 flow [2024-06-04 16:09:02,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:09:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:09:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 16:09:02,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 16:09:02,333 INFO L175 Difference]: Start difference. First operand has 294 places, 232 transitions, 2426 flow. Second operand 10 states and 109 transitions. [2024-06-04 16:09:02,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 251 transitions, 3025 flow [2024-06-04 16:09:02,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 251 transitions, 2741 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-06-04 16:09:02,771 INFO L231 Difference]: Finished difference. Result has 292 places, 233 transitions, 2262 flow [2024-06-04 16:09:02,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2262, PETRI_PLACES=292, PETRI_TRANSITIONS=233} [2024-06-04 16:09:02,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-04 16:09:02,772 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 233 transitions, 2262 flow [2024-06-04 16:09:02,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:02,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:09:02,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:09:02,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 16:09:02,772 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:09:02,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:09:02,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1527728247, now seen corresponding path program 11 times [2024-06-04 16:09:02,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:09:02,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82896937] [2024-06-04 16:09:02,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:09:02,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:09:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:09:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:09:07,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:09:07,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82896937] [2024-06-04 16:09:07,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82896937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:09:07,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:09:07,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:09:07,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147390208] [2024-06-04 16:09:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:09:07,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:09:07,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:09:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:09:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:09:07,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:09:07,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 233 transitions, 2262 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:07,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:09:07,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:09:07,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:09:08,197 INFO L124 PetriNetUnfolderBase]: 667/1226 cut-off events. [2024-06-04 16:09:08,197 INFO L125 PetriNetUnfolderBase]: For 76955/76957 co-relation queries the response was YES. [2024-06-04 16:09:08,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6837 conditions, 1226 events. 667/1226 cut-off events. For 76955/76957 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6676 event pairs, 116 based on Foata normal form. 4/1230 useless extension candidates. Maximal degree in co-relation 6691. Up to 1070 conditions per place. [2024-06-04 16:09:08,210 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 40 changer transitions 0/252 dead transitions. [2024-06-04 16:09:08,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 252 transitions, 2869 flow [2024-06-04 16:09:08,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:09:08,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:09:08,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 16:09:08,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 16:09:08,211 INFO L175 Difference]: Start difference. First operand has 292 places, 233 transitions, 2262 flow. Second operand 10 states and 112 transitions. [2024-06-04 16:09:08,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 252 transitions, 2869 flow [2024-06-04 16:09:08,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 252 transitions, 2752 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 16:09:08,626 INFO L231 Difference]: Finished difference. Result has 293 places, 234 transitions, 2279 flow [2024-06-04 16:09:08,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2279, PETRI_PLACES=293, PETRI_TRANSITIONS=234} [2024-06-04 16:09:08,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-04 16:09:08,627 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 234 transitions, 2279 flow [2024-06-04 16:09:08,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:08,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:09:08,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:09:08,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 16:09:08,628 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:09:08,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:09:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash -211832809, now seen corresponding path program 12 times [2024-06-04 16:09:08,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:09:08,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908479928] [2024-06-04 16:09:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:09:08,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:09:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:09:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:09:13,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:09:13,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908479928] [2024-06-04 16:09:13,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908479928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:09:13,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:09:13,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:09:13,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904629283] [2024-06-04 16:09:13,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:09:13,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:09:13,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:09:13,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:09:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:09:13,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:09:13,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 234 transitions, 2279 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:13,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:09:13,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:09:13,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:09:13,963 INFO L124 PetriNetUnfolderBase]: 671/1237 cut-off events. [2024-06-04 16:09:13,964 INFO L125 PetriNetUnfolderBase]: For 78834/78834 co-relation queries the response was YES. [2024-06-04 16:09:13,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6894 conditions, 1237 events. 671/1237 cut-off events. For 78834/78834 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6755 event pairs, 114 based on Foata normal form. 2/1239 useless extension candidates. Maximal degree in co-relation 6748. Up to 1083 conditions per place. [2024-06-04 16:09:13,976 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 40 changer transitions 0/251 dead transitions. [2024-06-04 16:09:13,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 251 transitions, 2879 flow [2024-06-04 16:09:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:09:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:09:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 16:09:13,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 16:09:13,977 INFO L175 Difference]: Start difference. First operand has 293 places, 234 transitions, 2279 flow. Second operand 10 states and 108 transitions. [2024-06-04 16:09:13,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 251 transitions, 2879 flow [2024-06-04 16:09:14,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 251 transitions, 2755 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 16:09:14,375 INFO L231 Difference]: Finished difference. Result has 295 places, 235 transitions, 2291 flow [2024-06-04 16:09:14,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2291, PETRI_PLACES=295, PETRI_TRANSITIONS=235} [2024-06-04 16:09:14,375 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-04 16:09:14,375 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 235 transitions, 2291 flow [2024-06-04 16:09:14,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:14,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:09:14,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:09:14,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 16:09:14,376 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:09:14,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:09:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1064540567, now seen corresponding path program 1 times [2024-06-04 16:09:14,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:09:14,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507114470] [2024-06-04 16:09:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:09:14,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:09:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:09:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:09:19,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:09:19,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507114470] [2024-06-04 16:09:19,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507114470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:09:19,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:09:19,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:09:19,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646317948] [2024-06-04 16:09:19,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:09:19,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:09:19,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:09:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:09:19,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:09:20,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:09:20,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 235 transitions, 2291 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:20,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:09:20,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:09:20,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:09:20,736 INFO L124 PetriNetUnfolderBase]: 691/1280 cut-off events. [2024-06-04 16:09:20,736 INFO L125 PetriNetUnfolderBase]: For 120014/120016 co-relation queries the response was YES. [2024-06-04 16:09:20,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7006 conditions, 1280 events. 691/1280 cut-off events. For 120014/120016 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7057 event pairs, 130 based on Foata normal form. 12/1292 useless extension candidates. Maximal degree in co-relation 6859. Up to 1101 conditions per place. [2024-06-04 16:09:20,749 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 213 selfloop transitions, 36 changer transitions 7/258 dead transitions. [2024-06-04 16:09:20,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 258 transitions, 2922 flow [2024-06-04 16:09:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:09:20,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:09:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 16:09:20,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 16:09:20,750 INFO L175 Difference]: Start difference. First operand has 295 places, 235 transitions, 2291 flow. Second operand 10 states and 115 transitions. [2024-06-04 16:09:20,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 258 transitions, 2922 flow [2024-06-04 16:09:21,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 258 transitions, 2796 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 16:09:21,147 INFO L231 Difference]: Finished difference. Result has 297 places, 233 transitions, 2221 flow [2024-06-04 16:09:21,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2221, PETRI_PLACES=297, PETRI_TRANSITIONS=233} [2024-06-04 16:09:21,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-04 16:09:21,148 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 233 transitions, 2221 flow [2024-06-04 16:09:21,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:21,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:09:21,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:09:21,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 16:09:21,148 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:09:21,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:09:21,148 INFO L85 PathProgramCache]: Analyzing trace with hash -211838389, now seen corresponding path program 13 times [2024-06-04 16:09:21,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:09:21,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142083356] [2024-06-04 16:09:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:09:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:09:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:09:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:09:26,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:09:26,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142083356] [2024-06-04 16:09:26,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142083356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:09:26,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:09:26,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:09:26,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080870962] [2024-06-04 16:09:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:09:26,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:09:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:09:26,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:09:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:09:26,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:09:26,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 233 transitions, 2221 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:26,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:09:26,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:09:26,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:09:26,791 INFO L124 PetriNetUnfolderBase]: 669/1239 cut-off events. [2024-06-04 16:09:26,792 INFO L125 PetriNetUnfolderBase]: For 80734/80734 co-relation queries the response was YES. [2024-06-04 16:09:26,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6814 conditions, 1239 events. 669/1239 cut-off events. For 80734/80734 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6814 event pairs, 114 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 6666. Up to 1071 conditions per place. [2024-06-04 16:09:26,804 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 41 changer transitions 0/250 dead transitions. [2024-06-04 16:09:26,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 250 transitions, 2817 flow [2024-06-04 16:09:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:09:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:09:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 16:09:26,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 16:09:26,805 INFO L175 Difference]: Start difference. First operand has 297 places, 233 transitions, 2221 flow. Second operand 10 states and 109 transitions. [2024-06-04 16:09:26,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 250 transitions, 2817 flow [2024-06-04 16:09:27,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 250 transitions, 2741 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 16:09:27,202 INFO L231 Difference]: Finished difference. Result has 298 places, 234 transitions, 2285 flow [2024-06-04 16:09:27,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2285, PETRI_PLACES=298, PETRI_TRANSITIONS=234} [2024-06-04 16:09:27,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 16:09:27,203 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 234 transitions, 2285 flow [2024-06-04 16:09:27,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:27,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:09:27,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:09:27,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 16:09:27,203 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:09:27,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:09:27,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1770575165, now seen corresponding path program 14 times [2024-06-04 16:09:27,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:09:27,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740298071] [2024-06-04 16:09:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:09:27,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:09:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:09:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:09:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:09:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740298071] [2024-06-04 16:09:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740298071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:09:32,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:09:32,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:09:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912757117] [2024-06-04 16:09:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:09:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:09:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:09:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:09:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:09:32,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:09:32,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 234 transitions, 2285 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:32,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:09:32,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:09:32,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:09:32,868 INFO L124 PetriNetUnfolderBase]: 673/1247 cut-off events. [2024-06-04 16:09:32,868 INFO L125 PetriNetUnfolderBase]: For 81421/81421 co-relation queries the response was YES. [2024-06-04 16:09:32,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6953 conditions, 1247 events. 673/1247 cut-off events. For 81421/81421 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6850 event pairs, 114 based on Foata normal form. 2/1249 useless extension candidates. Maximal degree in co-relation 6804. Up to 1093 conditions per place. [2024-06-04 16:09:32,881 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 38 changer transitions 0/251 dead transitions. [2024-06-04 16:09:32,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 251 transitions, 2881 flow [2024-06-04 16:09:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:09:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:09:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 16:09:32,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 16:09:32,882 INFO L175 Difference]: Start difference. First operand has 298 places, 234 transitions, 2285 flow. Second operand 10 states and 106 transitions. [2024-06-04 16:09:32,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 251 transitions, 2881 flow [2024-06-04 16:09:33,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 251 transitions, 2751 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 16:09:33,269 INFO L231 Difference]: Finished difference. Result has 300 places, 235 transitions, 2291 flow [2024-06-04 16:09:33,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2291, PETRI_PLACES=300, PETRI_TRANSITIONS=235} [2024-06-04 16:09:33,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-04 16:09:33,270 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 235 transitions, 2291 flow [2024-06-04 16:09:33,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:33,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:09:33,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:09:33,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 16:09:33,271 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:09:33,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:09:33,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1563771995, now seen corresponding path program 15 times [2024-06-04 16:09:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:09:33,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687920978] [2024-06-04 16:09:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:09:33,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:09:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:09:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:09:38,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:09:38,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687920978] [2024-06-04 16:09:38,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687920978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:09:38,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:09:38,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:09:38,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315539511] [2024-06-04 16:09:38,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:09:38,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:09:38,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:09:38,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:09:38,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:09:38,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:09:38,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 235 transitions, 2291 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:38,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:09:38,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:09:38,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:09:39,149 INFO L124 PetriNetUnfolderBase]: 677/1255 cut-off events. [2024-06-04 16:09:39,149 INFO L125 PetriNetUnfolderBase]: For 84268/84268 co-relation queries the response was YES. [2024-06-04 16:09:39,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6996 conditions, 1255 events. 677/1255 cut-off events. For 84268/84268 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6925 event pairs, 110 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 6846. Up to 1033 conditions per place. [2024-06-04 16:09:39,158 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 55 changer transitions 0/252 dead transitions. [2024-06-04 16:09:39,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 252 transitions, 2899 flow [2024-06-04 16:09:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:09:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:09:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 16:09:39,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 16:09:39,160 INFO L175 Difference]: Start difference. First operand has 300 places, 235 transitions, 2291 flow. Second operand 10 states and 110 transitions. [2024-06-04 16:09:39,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 252 transitions, 2899 flow [2024-06-04 16:09:39,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 252 transitions, 2773 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 16:09:39,532 INFO L231 Difference]: Finished difference. Result has 302 places, 236 transitions, 2337 flow [2024-06-04 16:09:39,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2337, PETRI_PLACES=302, PETRI_TRANSITIONS=236} [2024-06-04 16:09:39,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-04 16:09:39,533 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 236 transitions, 2337 flow [2024-06-04 16:09:39,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:39,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:09:39,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:09:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 16:09:39,533 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:09:39,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:09:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1764853309, now seen corresponding path program 2 times [2024-06-04 16:09:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:09:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748606304] [2024-06-04 16:09:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:09:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:09:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:09:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:09:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:09:44,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748606304] [2024-06-04 16:09:44,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748606304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:09:44,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:09:44,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:09:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988149489] [2024-06-04 16:09:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:09:44,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:09:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:09:44,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:09:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:09:44,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:09:44,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 236 transitions, 2337 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:44,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:09:44,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:09:44,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:09:44,822 INFO L124 PetriNetUnfolderBase]: 693/1291 cut-off events. [2024-06-04 16:09:44,823 INFO L125 PetriNetUnfolderBase]: For 126745/126745 co-relation queries the response was YES. [2024-06-04 16:09:44,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7129 conditions, 1291 events. 693/1291 cut-off events. For 126745/126745 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7149 event pairs, 122 based on Foata normal form. 10/1301 useless extension candidates. Maximal degree in co-relation 6978. Up to 1093 conditions per place. [2024-06-04 16:09:44,835 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 207 selfloop transitions, 38 changer transitions 11/258 dead transitions. [2024-06-04 16:09:44,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 258 transitions, 2961 flow [2024-06-04 16:09:44,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:09:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:09:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 16:09:44,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 16:09:44,836 INFO L175 Difference]: Start difference. First operand has 302 places, 236 transitions, 2337 flow. Second operand 11 states and 120 transitions. [2024-06-04 16:09:44,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 258 transitions, 2961 flow [2024-06-04 16:09:45,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 258 transitions, 2799 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 16:09:45,263 INFO L231 Difference]: Finished difference. Result has 305 places, 233 transitions, 2232 flow [2024-06-04 16:09:45,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2232, PETRI_PLACES=305, PETRI_TRANSITIONS=233} [2024-06-04 16:09:45,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-04 16:09:45,264 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 233 transitions, 2232 flow [2024-06-04 16:09:45,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:45,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:09:45,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:09:45,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 16:09:45,265 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:09:45,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:09:45,265 INFO L85 PathProgramCache]: Analyzing trace with hash -4902663, now seen corresponding path program 3 times [2024-06-04 16:09:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:09:45,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514562167] [2024-06-04 16:09:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:09:45,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:09:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:09:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:09:49,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:09:49,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514562167] [2024-06-04 16:09:49,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514562167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:09:49,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:09:49,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:09:49,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963055496] [2024-06-04 16:09:49,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:09:49,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:09:49,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:09:49,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:09:49,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:09:50,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:09:50,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 233 transitions, 2232 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:50,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:09:50,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:09:50,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:09:50,914 INFO L124 PetriNetUnfolderBase]: 708/1328 cut-off events. [2024-06-04 16:09:50,914 INFO L125 PetriNetUnfolderBase]: For 171456/171456 co-relation queries the response was YES. [2024-06-04 16:09:50,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8204 conditions, 1328 events. 708/1328 cut-off events. For 171456/171456 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7383 event pairs, 123 based on Foata normal form. 8/1336 useless extension candidates. Maximal degree in co-relation 8052. Up to 917 conditions per place. [2024-06-04 16:09:50,924 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 57 changer transitions 9/259 dead transitions. [2024-06-04 16:09:50,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 259 transitions, 3110 flow [2024-06-04 16:09:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:09:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:09:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 16:09:50,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 16:09:50,925 INFO L175 Difference]: Start difference. First operand has 305 places, 233 transitions, 2232 flow. Second operand 11 states and 126 transitions. [2024-06-04 16:09:50,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 259 transitions, 3110 flow [2024-06-04 16:09:51,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 259 transitions, 3026 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 16:09:51,590 INFO L231 Difference]: Finished difference. Result has 303 places, 229 transitions, 2232 flow [2024-06-04 16:09:51,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2232, PETRI_PLACES=303, PETRI_TRANSITIONS=229} [2024-06-04 16:09:51,590 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-04 16:09:51,591 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 229 transitions, 2232 flow [2024-06-04 16:09:51,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:51,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:09:51,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:09:51,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 16:09:51,591 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:09:51,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:09:51,592 INFO L85 PathProgramCache]: Analyzing trace with hash -4911963, now seen corresponding path program 4 times [2024-06-04 16:09:51,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:09:51,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790714745] [2024-06-04 16:09:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:09:51,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:09:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:09:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:09:56,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:09:56,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790714745] [2024-06-04 16:09:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790714745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:09:56,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:09:56,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:09:56,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928678945] [2024-06-04 16:09:56,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:09:56,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:09:56,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:09:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:09:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:09:56,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:09:56,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 229 transitions, 2232 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:56,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:09:56,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:09:56,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:09:57,470 INFO L124 PetriNetUnfolderBase]: 684/1284 cut-off events. [2024-06-04 16:09:57,470 INFO L125 PetriNetUnfolderBase]: For 180115/180115 co-relation queries the response was YES. [2024-06-04 16:09:57,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8043 conditions, 1284 events. 684/1284 cut-off events. For 180115/180115 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7119 event pairs, 127 based on Foata normal form. 10/1294 useless extension candidates. Maximal degree in co-relation 7892. Up to 988 conditions per place. [2024-06-04 16:09:57,481 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 53 changer transitions 14/251 dead transitions. [2024-06-04 16:09:57,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 251 transitions, 2842 flow [2024-06-04 16:09:57,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:09:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:09:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 16:09:57,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 16:09:57,482 INFO L175 Difference]: Start difference. First operand has 303 places, 229 transitions, 2232 flow. Second operand 11 states and 123 transitions. [2024-06-04 16:09:57,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 251 transitions, 2842 flow [2024-06-04 16:09:58,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 251 transitions, 2724 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 16:09:58,110 INFO L231 Difference]: Finished difference. Result has 302 places, 223 transitions, 2177 flow [2024-06-04 16:09:58,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2177, PETRI_PLACES=302, PETRI_TRANSITIONS=223} [2024-06-04 16:09:58,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-04 16:09:58,110 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 223 transitions, 2177 flow [2024-06-04 16:09:58,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:09:58,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:09:58,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:09:58,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 16:09:58,111 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:09:58,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:09:58,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1571123645, now seen corresponding path program 16 times [2024-06-04 16:09:58,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:09:58,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826240908] [2024-06-04 16:09:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:09:58,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:09:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:10:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:10:04,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:10:04,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826240908] [2024-06-04 16:10:04,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826240908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:10:04,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:10:04,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:10:04,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454645133] [2024-06-04 16:10:04,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:10:04,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:10:04,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:10:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:10:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:10:04,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:10:04,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 223 transitions, 2177 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:04,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:10:04,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:10:04,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:10:04,811 INFO L124 PetriNetUnfolderBase]: 656/1228 cut-off events. [2024-06-04 16:10:04,812 INFO L125 PetriNetUnfolderBase]: For 133415/133415 co-relation queries the response was YES. [2024-06-04 16:10:04,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7824 conditions, 1228 events. 656/1228 cut-off events. For 133415/133415 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6743 event pairs, 129 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 7674. Up to 1044 conditions per place. [2024-06-04 16:10:04,824 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 47 changer transitions 0/240 dead transitions. [2024-06-04 16:10:04,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 240 transitions, 2763 flow [2024-06-04 16:10:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:10:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:10:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 16:10:04,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 16:10:04,825 INFO L175 Difference]: Start difference. First operand has 302 places, 223 transitions, 2177 flow. Second operand 10 states and 109 transitions. [2024-06-04 16:10:04,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 240 transitions, 2763 flow [2024-06-04 16:10:05,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 240 transitions, 2637 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 16:10:05,423 INFO L231 Difference]: Finished difference. Result has 295 places, 224 transitions, 2209 flow [2024-06-04 16:10:05,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2209, PETRI_PLACES=295, PETRI_TRANSITIONS=224} [2024-06-04 16:10:05,423 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-04 16:10:05,423 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 224 transitions, 2209 flow [2024-06-04 16:10:05,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:05,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:10:05,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:10:05,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 16:10:05,424 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:10:05,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:10:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1481263777, now seen corresponding path program 5 times [2024-06-04 16:10:05,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:10:05,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66729799] [2024-06-04 16:10:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:10:05,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:10:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:10:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:10:11,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:10:11,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66729799] [2024-06-04 16:10:11,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66729799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:10:11,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:10:11,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:10:11,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530899727] [2024-06-04 16:10:11,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:10:11,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:10:11,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:10:11,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:10:11,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:10:11,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:10:11,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 224 transitions, 2209 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:11,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:10:11,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:10:11,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:10:12,179 INFO L124 PetriNetUnfolderBase]: 672/1264 cut-off events. [2024-06-04 16:10:12,179 INFO L125 PetriNetUnfolderBase]: For 168964/168964 co-relation queries the response was YES. [2024-06-04 16:10:12,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7893 conditions, 1264 events. 672/1264 cut-off events. For 168964/168964 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6986 event pairs, 131 based on Foata normal form. 10/1274 useless extension candidates. Maximal degree in co-relation 7746. Up to 990 conditions per place. [2024-06-04 16:10:12,192 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 49 changer transitions 11/246 dead transitions. [2024-06-04 16:10:12,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 246 transitions, 2805 flow [2024-06-04 16:10:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:10:12,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:10:12,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 16:10:12,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 16:10:12,193 INFO L175 Difference]: Start difference. First operand has 295 places, 224 transitions, 2209 flow. Second operand 11 states and 123 transitions. [2024-06-04 16:10:12,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 246 transitions, 2805 flow [2024-06-04 16:10:12,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 246 transitions, 2657 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 16:10:12,836 INFO L231 Difference]: Finished difference. Result has 298 places, 221 transitions, 2138 flow [2024-06-04 16:10:12,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2138, PETRI_PLACES=298, PETRI_TRANSITIONS=221} [2024-06-04 16:10:12,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 16:10:12,836 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 221 transitions, 2138 flow [2024-06-04 16:10:12,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:12,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:10:12,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:10:12,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 16:10:12,837 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:10:12,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:10:12,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1800795661, now seen corresponding path program 17 times [2024-06-04 16:10:12,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:10:12,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333103276] [2024-06-04 16:10:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:10:12,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:10:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:10:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:10:17,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:10:17,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333103276] [2024-06-04 16:10:17,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333103276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:10:17,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:10:17,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:10:17,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771572062] [2024-06-04 16:10:17,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:10:17,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:10:17,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:10:17,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:10:17,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:10:18,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:10:18,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 221 transitions, 2138 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:18,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:10:18,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:10:18,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:10:18,782 INFO L124 PetriNetUnfolderBase]: 650/1222 cut-off events. [2024-06-04 16:10:18,782 INFO L125 PetriNetUnfolderBase]: For 131456/131456 co-relation queries the response was YES. [2024-06-04 16:10:18,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 1222 events. 650/1222 cut-off events. For 131456/131456 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6746 event pairs, 123 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 7564. Up to 907 conditions per place. [2024-06-04 16:10:18,794 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 52 changer transitions 0/243 dead transitions. [2024-06-04 16:10:18,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 243 transitions, 2984 flow [2024-06-04 16:10:18,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:10:18,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:10:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 16:10:18,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 16:10:18,795 INFO L175 Difference]: Start difference. First operand has 298 places, 221 transitions, 2138 flow. Second operand 10 states and 116 transitions. [2024-06-04 16:10:18,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 243 transitions, 2984 flow [2024-06-04 16:10:19,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 243 transitions, 2878 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 16:10:19,309 INFO L231 Difference]: Finished difference. Result has 295 places, 222 transitions, 2206 flow [2024-06-04 16:10:19,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2206, PETRI_PLACES=295, PETRI_TRANSITIONS=222} [2024-06-04 16:10:19,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-04 16:10:19,309 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 222 transitions, 2206 flow [2024-06-04 16:10:19,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:19,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:10:19,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:10:19,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 16:10:19,310 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:10:19,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:10:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash -5171433, now seen corresponding path program 6 times [2024-06-04 16:10:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:10:19,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773539535] [2024-06-04 16:10:19,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:10:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:10:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:10:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:10:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:10:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773539535] [2024-06-04 16:10:24,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773539535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:10:24,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:10:24,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:10:24,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022198813] [2024-06-04 16:10:24,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:10:24,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:10:24,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:10:24,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:10:24,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:10:24,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:10:24,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 222 transitions, 2206 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:24,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:10:24,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:10:24,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:10:25,363 INFO L124 PetriNetUnfolderBase]: 637/1199 cut-off events. [2024-06-04 16:10:25,363 INFO L125 PetriNetUnfolderBase]: For 118830/118830 co-relation queries the response was YES. [2024-06-04 16:10:25,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6605 conditions, 1199 events. 637/1199 cut-off events. For 118830/118830 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6606 event pairs, 112 based on Foata normal form. 10/1209 useless extension candidates. Maximal degree in co-relation 6458. Up to 933 conditions per place. [2024-06-04 16:10:25,380 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 49 changer transitions 11/244 dead transitions. [2024-06-04 16:10:25,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 244 transitions, 2798 flow [2024-06-04 16:10:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:10:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:10:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 16:10:25,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 16:10:25,381 INFO L175 Difference]: Start difference. First operand has 295 places, 222 transitions, 2206 flow. Second operand 11 states and 121 transitions. [2024-06-04 16:10:25,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 244 transitions, 2798 flow [2024-06-04 16:10:25,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 244 transitions, 2638 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 16:10:25,730 INFO L231 Difference]: Finished difference. Result has 298 places, 219 transitions, 2123 flow [2024-06-04 16:10:25,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2123, PETRI_PLACES=298, PETRI_TRANSITIONS=219} [2024-06-04 16:10:25,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 16:10:25,730 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 219 transitions, 2123 flow [2024-06-04 16:10:25,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:25,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:10:25,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:10:25,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 16:10:25,731 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:10:25,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:10:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1107435335, now seen corresponding path program 18 times [2024-06-04 16:10:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:10:25,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359935701] [2024-06-04 16:10:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:10:25,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:10:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:10:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:10:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:10:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359935701] [2024-06-04 16:10:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359935701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:10:31,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:10:31,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:10:31,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766134974] [2024-06-04 16:10:31,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:10:31,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:10:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:10:31,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:10:31,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:10:31,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:10:31,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 219 transitions, 2123 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:31,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:10:31,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:10:31,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:10:31,764 INFO L124 PetriNetUnfolderBase]: 615/1157 cut-off events. [2024-06-04 16:10:31,764 INFO L125 PetriNetUnfolderBase]: For 80182/80184 co-relation queries the response was YES. [2024-06-04 16:10:31,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6416 conditions, 1157 events. 615/1157 cut-off events. For 80182/80184 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6366 event pairs, 113 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 6268. Up to 953 conditions per place. [2024-06-04 16:10:31,775 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 49 changer transitions 0/235 dead transitions. [2024-06-04 16:10:31,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 235 transitions, 2703 flow [2024-06-04 16:10:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:10:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:10:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 16:10:31,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 16:10:31,776 INFO L175 Difference]: Start difference. First operand has 298 places, 219 transitions, 2123 flow. Second operand 10 states and 111 transitions. [2024-06-04 16:10:31,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 235 transitions, 2703 flow [2024-06-04 16:10:32,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 235 transitions, 2601 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 16:10:32,090 INFO L231 Difference]: Finished difference. Result has 294 places, 220 transitions, 2187 flow [2024-06-04 16:10:32,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2187, PETRI_PLACES=294, PETRI_TRANSITIONS=220} [2024-06-04 16:10:32,091 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-04 16:10:32,091 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 220 transitions, 2187 flow [2024-06-04 16:10:32,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:32,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:10:32,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:10:32,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 16:10:32,091 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:10:32,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:10:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash -94568725, now seen corresponding path program 7 times [2024-06-04 16:10:32,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:10:32,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542265365] [2024-06-04 16:10:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:10:32,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:10:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:10:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:10:37,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:10:37,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542265365] [2024-06-04 16:10:37,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542265365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:10:37,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:10:37,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:10:37,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619291494] [2024-06-04 16:10:37,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:10:37,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:10:37,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:10:37,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:10:37,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:10:37,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:10:37,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 220 transitions, 2187 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:37,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:10:37,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:10:37,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:10:37,748 INFO L124 PetriNetUnfolderBase]: 631/1193 cut-off events. [2024-06-04 16:10:37,748 INFO L125 PetriNetUnfolderBase]: For 118984/118986 co-relation queries the response was YES. [2024-06-04 16:10:37,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 1193 events. 631/1193 cut-off events. For 118984/118986 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6591 event pairs, 115 based on Foata normal form. 10/1203 useless extension candidates. Maximal degree in co-relation 6409. Up to 935 conditions per place. [2024-06-04 16:10:37,760 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 45 changer transitions 16/241 dead transitions. [2024-06-04 16:10:37,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 241 transitions, 2773 flow [2024-06-04 16:10:37,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:10:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:10:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 16:10:37,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 16:10:37,761 INFO L175 Difference]: Start difference. First operand has 294 places, 220 transitions, 2187 flow. Second operand 11 states and 124 transitions. [2024-06-04 16:10:37,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 241 transitions, 2773 flow [2024-06-04 16:10:38,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 241 transitions, 2617 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-04 16:10:38,115 INFO L231 Difference]: Finished difference. Result has 297 places, 214 transitions, 2084 flow [2024-06-04 16:10:38,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2084, PETRI_PLACES=297, PETRI_TRANSITIONS=214} [2024-06-04 16:10:38,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-04 16:10:38,115 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 214 transitions, 2084 flow [2024-06-04 16:10:38,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:38,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:10:38,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:10:38,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 16:10:38,116 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:10:38,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:10:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash 908133545, now seen corresponding path program 19 times [2024-06-04 16:10:38,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:10:38,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472716400] [2024-06-04 16:10:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:10:38,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:10:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:10:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:10:42,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:10:42,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472716400] [2024-06-04 16:10:42,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472716400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:10:42,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:10:42,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:10:42,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693597346] [2024-06-04 16:10:42,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:10:42,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:10:42,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:10:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:10:42,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:10:43,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:10:43,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 214 transitions, 2084 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:43,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:10:43,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:10:43,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:10:43,629 INFO L124 PetriNetUnfolderBase]: 599/1133 cut-off events. [2024-06-04 16:10:43,629 INFO L125 PetriNetUnfolderBase]: For 80341/80343 co-relation queries the response was YES. [2024-06-04 16:10:43,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 1133 events. 599/1133 cut-off events. For 80341/80343 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6239 event pairs, 115 based on Foata normal form. 2/1135 useless extension candidates. Maximal degree in co-relation 6157. Up to 955 conditions per place. [2024-06-04 16:10:43,639 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 42 changer transitions 0/229 dead transitions. [2024-06-04 16:10:43,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 229 transitions, 2648 flow [2024-06-04 16:10:43,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:10:43,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:10:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 16:10:43,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 16:10:43,640 INFO L175 Difference]: Start difference. First operand has 297 places, 214 transitions, 2084 flow. Second operand 10 states and 106 transitions. [2024-06-04 16:10:43,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 229 transitions, 2648 flow [2024-06-04 16:10:43,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 229 transitions, 2542 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 16:10:43,985 INFO L231 Difference]: Finished difference. Result has 290 places, 215 transitions, 2132 flow [2024-06-04 16:10:43,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2132, PETRI_PLACES=290, PETRI_TRANSITIONS=215} [2024-06-04 16:10:43,985 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-04 16:10:43,985 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 215 transitions, 2132 flow [2024-06-04 16:10:43,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:43,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:10:43,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:10:43,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 16:10:43,986 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:10:43,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:10:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash -754524723, now seen corresponding path program 20 times [2024-06-04 16:10:43,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:10:43,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310028517] [2024-06-04 16:10:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:10:43,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:10:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:10:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:10:49,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:10:49,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310028517] [2024-06-04 16:10:49,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310028517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:10:49,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:10:49,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:10:49,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122006959] [2024-06-04 16:10:49,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:10:49,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:10:49,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:10:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:10:49,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:10:50,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:10:50,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 215 transitions, 2132 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:50,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:10:50,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:10:50,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:10:50,518 INFO L124 PetriNetUnfolderBase]: 603/1141 cut-off events. [2024-06-04 16:10:50,518 INFO L125 PetriNetUnfolderBase]: For 79170/79172 co-relation queries the response was YES. [2024-06-04 16:10:50,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6409 conditions, 1141 events. 603/1141 cut-off events. For 79170/79172 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6293 event pairs, 115 based on Foata normal form. 2/1143 useless extension candidates. Maximal degree in co-relation 6263. Up to 963 conditions per place. [2024-06-04 16:10:50,529 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 187 selfloop transitions, 41 changer transitions 0/230 dead transitions. [2024-06-04 16:10:50,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 230 transitions, 2694 flow [2024-06-04 16:10:50,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:10:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:10:50,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 16:10:50,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 16:10:50,530 INFO L175 Difference]: Start difference. First operand has 290 places, 215 transitions, 2132 flow. Second operand 10 states and 105 transitions. [2024-06-04 16:10:50,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 230 transitions, 2694 flow [2024-06-04 16:10:50,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 230 transitions, 2552 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-04 16:10:50,873 INFO L231 Difference]: Finished difference. Result has 292 places, 216 transitions, 2142 flow [2024-06-04 16:10:50,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2142, PETRI_PLACES=292, PETRI_TRANSITIONS=216} [2024-06-04 16:10:50,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-04 16:10:50,873 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 216 transitions, 2142 flow [2024-06-04 16:10:50,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:50,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:10:50,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:10:50,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 16:10:50,874 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:10:50,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:10:50,874 INFO L85 PathProgramCache]: Analyzing trace with hash -555222933, now seen corresponding path program 21 times [2024-06-04 16:10:50,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:10:50,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692866263] [2024-06-04 16:10:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:10:50,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:10:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:10:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:10:55,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:10:55,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692866263] [2024-06-04 16:10:55,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692866263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:10:55,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:10:55,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:10:55,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090419103] [2024-06-04 16:10:55,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:10:55,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:10:55,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:10:55,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:10:55,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:10:56,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:10:56,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 216 transitions, 2142 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:56,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:10:56,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:10:56,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:10:56,653 INFO L124 PetriNetUnfolderBase]: 607/1149 cut-off events. [2024-06-04 16:10:56,653 INFO L125 PetriNetUnfolderBase]: For 81064/81066 co-relation queries the response was YES. [2024-06-04 16:10:56,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1149 events. 607/1149 cut-off events. For 81064/81066 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6362 event pairs, 115 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 6309. Up to 962 conditions per place. [2024-06-04 16:10:56,665 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 187 selfloop transitions, 43 changer transitions 0/232 dead transitions. [2024-06-04 16:10:56,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 232 transitions, 2716 flow [2024-06-04 16:10:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:10:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:10:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 16:10:56,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 16:10:56,665 INFO L175 Difference]: Start difference. First operand has 292 places, 216 transitions, 2142 flow. Second operand 10 states and 107 transitions. [2024-06-04 16:10:56,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 232 transitions, 2716 flow [2024-06-04 16:10:57,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 232 transitions, 2574 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-04 16:10:57,020 INFO L231 Difference]: Finished difference. Result has 294 places, 217 transitions, 2158 flow [2024-06-04 16:10:57,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2158, PETRI_PLACES=294, PETRI_TRANSITIONS=217} [2024-06-04 16:10:57,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-04 16:10:57,020 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 217 transitions, 2158 flow [2024-06-04 16:10:57,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:10:57,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:10:57,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:10:57,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 16:10:57,021 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:10:57,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:10:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1503677723, now seen corresponding path program 22 times [2024-06-04 16:10:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:10:57,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114735003] [2024-06-04 16:10:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:10:57,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:10:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:11:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:11:01,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:11:01,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114735003] [2024-06-04 16:11:01,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114735003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:11:01,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:11:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:11:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428852516] [2024-06-04 16:11:01,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:11:01,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:11:01,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:11:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:11:01,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:11:01,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:11:01,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 217 transitions, 2158 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:01,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:11:01,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:11:01,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:11:02,431 INFO L124 PetriNetUnfolderBase]: 611/1155 cut-off events. [2024-06-04 16:11:02,432 INFO L125 PetriNetUnfolderBase]: For 82959/82959 co-relation queries the response was YES. [2024-06-04 16:11:02,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 1155 events. 611/1155 cut-off events. For 82959/82959 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6374 event pairs, 146 based on Foata normal form. 2/1157 useless extension candidates. Maximal degree in co-relation 6361. Up to 1040 conditions per place. [2024-06-04 16:11:02,440 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 35 changer transitions 0/231 dead transitions. [2024-06-04 16:11:02,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 231 transitions, 2724 flow [2024-06-04 16:11:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:11:02,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:11:02,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 16:11:02,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 16:11:02,442 INFO L175 Difference]: Start difference. First operand has 294 places, 217 transitions, 2158 flow. Second operand 10 states and 108 transitions. [2024-06-04 16:11:02,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 231 transitions, 2724 flow [2024-06-04 16:11:02,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 231 transitions, 2576 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-04 16:11:02,810 INFO L231 Difference]: Finished difference. Result has 296 places, 218 transitions, 2154 flow [2024-06-04 16:11:02,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2154, PETRI_PLACES=296, PETRI_TRANSITIONS=218} [2024-06-04 16:11:02,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-04 16:11:02,811 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 218 transitions, 2154 flow [2024-06-04 16:11:02,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:02,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:11:02,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:11:02,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 16:11:02,811 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:11:02,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:11:02,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1114786985, now seen corresponding path program 23 times [2024-06-04 16:11:02,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:11:02,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141445469] [2024-06-04 16:11:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:11:02,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:11:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:11:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:11:07,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:11:07,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141445469] [2024-06-04 16:11:07,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141445469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:11:07,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:11:07,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:11:07,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038470170] [2024-06-04 16:11:07,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:11:07,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:11:07,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:11:07,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:11:07,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:11:07,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:11:07,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 218 transitions, 2154 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:07,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:11:07,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:11:07,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:11:08,390 INFO L124 PetriNetUnfolderBase]: 615/1165 cut-off events. [2024-06-04 16:11:08,390 INFO L125 PetriNetUnfolderBase]: For 84714/84716 co-relation queries the response was YES. [2024-06-04 16:11:08,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6544 conditions, 1165 events. 615/1165 cut-off events. For 84714/84716 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6470 event pairs, 117 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 6395. Up to 969 conditions per place. [2024-06-04 16:11:08,398 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 47 changer transitions 0/234 dead transitions. [2024-06-04 16:11:08,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 234 transitions, 2740 flow [2024-06-04 16:11:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:11:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:11:08,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 16:11:08,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 16:11:08,399 INFO L175 Difference]: Start difference. First operand has 296 places, 218 transitions, 2154 flow. Second operand 10 states and 110 transitions. [2024-06-04 16:11:08,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 234 transitions, 2740 flow [2024-06-04 16:11:08,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 234 transitions, 2606 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-04 16:11:08,763 INFO L231 Difference]: Finished difference. Result has 298 places, 219 transitions, 2190 flow [2024-06-04 16:11:08,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2190, PETRI_PLACES=298, PETRI_TRANSITIONS=219} [2024-06-04 16:11:08,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 16:11:08,763 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 219 transitions, 2190 flow [2024-06-04 16:11:08,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:08,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:11:08,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:11:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 16:11:08,764 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:11:08,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:11:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash 527853389, now seen corresponding path program 8 times [2024-06-04 16:11:08,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:11:08,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460893188] [2024-06-04 16:11:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:11:08,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:11:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:11:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:11:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:11:14,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460893188] [2024-06-04 16:11:14,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460893188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:11:14,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:11:14,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:11:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926446575] [2024-06-04 16:11:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:11:14,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:11:14,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:11:14,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:11:14,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:11:14,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:11:14,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 219 transitions, 2190 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:14,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:11:14,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:11:14,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:11:15,570 INFO L124 PetriNetUnfolderBase]: 631/1201 cut-off events. [2024-06-04 16:11:15,570 INFO L125 PetriNetUnfolderBase]: For 126534/126536 co-relation queries the response was YES. [2024-06-04 16:11:15,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6617 conditions, 1201 events. 631/1201 cut-off events. For 126534/126536 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6682 event pairs, 123 based on Foata normal form. 10/1211 useless extension candidates. Maximal degree in co-relation 6467. Up to 944 conditions per place. [2024-06-04 16:11:15,579 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 49 changer transitions 11/240 dead transitions. [2024-06-04 16:11:15,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 240 transitions, 2774 flow [2024-06-04 16:11:15,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:11:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:11:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 16:11:15,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 16:11:15,580 INFO L175 Difference]: Start difference. First operand has 298 places, 219 transitions, 2190 flow. Second operand 11 states and 124 transitions. [2024-06-04 16:11:15,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 240 transitions, 2774 flow [2024-06-04 16:11:15,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 240 transitions, 2614 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-04 16:11:15,966 INFO L231 Difference]: Finished difference. Result has 301 places, 216 transitions, 2110 flow [2024-06-04 16:11:15,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2110, PETRI_PLACES=301, PETRI_TRANSITIONS=216} [2024-06-04 16:11:15,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 16:11:15,967 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 216 transitions, 2110 flow [2024-06-04 16:11:15,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:15,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:11:15,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:11:15,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 16:11:15,967 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:11:15,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:11:15,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1115063691, now seen corresponding path program 9 times [2024-06-04 16:11:15,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:11:15,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197040719] [2024-06-04 16:11:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:11:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:11:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:11:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:11:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:11:20,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197040719] [2024-06-04 16:11:20,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197040719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:11:20,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:11:20,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:11:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283172033] [2024-06-04 16:11:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:11:20,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:11:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:11:20,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:11:20,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:11:20,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:11:20,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 216 transitions, 2110 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:20,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:11:20,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:11:20,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:11:21,574 INFO L124 PetriNetUnfolderBase]: 646/1238 cut-off events. [2024-06-04 16:11:21,575 INFO L125 PetriNetUnfolderBase]: For 169697/169699 co-relation queries the response was YES. [2024-06-04 16:11:21,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7704 conditions, 1238 events. 646/1238 cut-off events. For 169697/169699 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6900 event pairs, 130 based on Foata normal form. 8/1246 useless extension candidates. Maximal degree in co-relation 7553. Up to 922 conditions per place. [2024-06-04 16:11:21,587 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 48 changer transitions 7/241 dead transitions. [2024-06-04 16:11:21,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 241 transitions, 2944 flow [2024-06-04 16:11:21,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:11:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:11:21,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 16:11:21,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 16:11:21,588 INFO L175 Difference]: Start difference. First operand has 301 places, 216 transitions, 2110 flow. Second operand 11 states and 126 transitions. [2024-06-04 16:11:21,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 241 transitions, 2944 flow [2024-06-04 16:11:22,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 241 transitions, 2781 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 16:11:22,153 INFO L231 Difference]: Finished difference. Result has 299 places, 214 transitions, 2036 flow [2024-06-04 16:11:22,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2036, PETRI_PLACES=299, PETRI_TRANSITIONS=214} [2024-06-04 16:11:22,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-04 16:11:22,153 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 214 transitions, 2036 flow [2024-06-04 16:11:22,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:22,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:11:22,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:11:22,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 16:11:22,154 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:11:22,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:11:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1503683303, now seen corresponding path program 24 times [2024-06-04 16:11:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:11:22,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496856049] [2024-06-04 16:11:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:11:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:11:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:11:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:11:26,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:11:26,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496856049] [2024-06-04 16:11:26,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496856049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:11:26,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:11:26,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:11:26,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549123160] [2024-06-04 16:11:26,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:11:26,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:11:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:11:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:11:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:11:27,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:11:27,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 214 transitions, 2036 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:27,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:11:27,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:11:27,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:11:27,549 INFO L124 PetriNetUnfolderBase]: 668/1278 cut-off events. [2024-06-04 16:11:27,549 INFO L125 PetriNetUnfolderBase]: For 208151/208151 co-relation queries the response was YES. [2024-06-04 16:11:27,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9410 conditions, 1278 events. 668/1278 cut-off events. For 208151/208151 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7136 event pairs, 177 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 9259. Up to 1081 conditions per place. [2024-06-04 16:11:27,568 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 36 changer transitions 0/234 dead transitions. [2024-06-04 16:11:27,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 234 transitions, 2942 flow [2024-06-04 16:11:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:11:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:11:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 16:11:27,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 16:11:27,569 INFO L175 Difference]: Start difference. First operand has 299 places, 214 transitions, 2036 flow. Second operand 10 states and 113 transitions. [2024-06-04 16:11:27,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 234 transitions, 2942 flow [2024-06-04 16:11:28,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 234 transitions, 2842 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 16:11:28,383 INFO L231 Difference]: Finished difference. Result has 297 places, 216 transitions, 2162 flow [2024-06-04 16:11:28,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2162, PETRI_PLACES=297, PETRI_TRANSITIONS=216} [2024-06-04 16:11:28,383 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-04 16:11:28,383 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 216 transitions, 2162 flow [2024-06-04 16:11:28,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:28,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:11:28,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:11:28,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 16:11:28,384 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:11:28,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:11:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1503467977, now seen corresponding path program 10 times [2024-06-04 16:11:28,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:11:28,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164343420] [2024-06-04 16:11:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:11:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:11:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:11:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:11:32,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:11:32,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164343420] [2024-06-04 16:11:32,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164343420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:11:32,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:11:32,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:11:32,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662204593] [2024-06-04 16:11:32,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:11:32,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:11:32,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:11:32,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:11:32,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:11:33,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:11:33,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 216 transitions, 2162 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:33,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:11:33,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:11:33,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:11:33,622 INFO L124 PetriNetUnfolderBase]: 684/1314 cut-off events. [2024-06-04 16:11:33,622 INFO L125 PetriNetUnfolderBase]: For 246873/246873 co-relation queries the response was YES. [2024-06-04 16:11:33,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9525 conditions, 1314 events. 684/1314 cut-off events. For 246873/246873 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7416 event pairs, 189 based on Foata normal form. 10/1324 useless extension candidates. Maximal degree in co-relation 9375. Up to 1153 conditions per place. [2024-06-04 16:11:33,635 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 29 changer transitions 16/235 dead transitions. [2024-06-04 16:11:33,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 235 transitions, 2724 flow [2024-06-04 16:11:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:11:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:11:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 16:11:33,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 16:11:33,636 INFO L175 Difference]: Start difference. First operand has 297 places, 216 transitions, 2162 flow. Second operand 11 states and 121 transitions. [2024-06-04 16:11:33,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 235 transitions, 2724 flow [2024-06-04 16:11:34,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 235 transitions, 2593 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-04 16:11:34,517 INFO L231 Difference]: Finished difference. Result has 301 places, 210 transitions, 2052 flow [2024-06-04 16:11:34,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2052, PETRI_PLACES=301, PETRI_TRANSITIONS=210} [2024-06-04 16:11:34,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 16:11:34,517 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 210 transitions, 2052 flow [2024-06-04 16:11:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:34,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:11:34,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:11:34,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 16:11:34,518 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:11:34,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:11:34,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1190816193, now seen corresponding path program 11 times [2024-06-04 16:11:34,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:11:34,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509099126] [2024-06-04 16:11:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:11:34,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:11:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:11:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:11:39,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:11:39,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509099126] [2024-06-04 16:11:39,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509099126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:11:39,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:11:39,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:11:39,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972123716] [2024-06-04 16:11:39,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:11:39,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:11:39,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:11:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:11:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:11:39,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:11:39,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 210 transitions, 2052 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:39,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:11:39,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:11:39,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:11:40,058 INFO L124 PetriNetUnfolderBase]: 689/1333 cut-off events. [2024-06-04 16:11:40,058 INFO L125 PetriNetUnfolderBase]: For 291595/291595 co-relation queries the response was YES. [2024-06-04 16:11:40,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10563 conditions, 1333 events. 689/1333 cut-off events. For 291595/291595 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7552 event pairs, 194 based on Foata normal form. 8/1341 useless extension candidates. Maximal degree in co-relation 10412. Up to 1131 conditions per place. [2024-06-04 16:11:40,076 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 28 changer transitions 7/234 dead transitions. [2024-06-04 16:11:40,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 234 transitions, 2866 flow [2024-06-04 16:11:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:11:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:11:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 16:11:40,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 16:11:40,078 INFO L175 Difference]: Start difference. First operand has 301 places, 210 transitions, 2052 flow. Second operand 11 states and 125 transitions. [2024-06-04 16:11:40,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 234 transitions, 2866 flow [2024-06-04 16:11:41,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 234 transitions, 2788 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-04 16:11:41,109 INFO L231 Difference]: Finished difference. Result has 295 places, 208 transitions, 2025 flow [2024-06-04 16:11:41,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2025, PETRI_PLACES=295, PETRI_TRANSITIONS=208} [2024-06-04 16:11:41,109 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-04 16:11:41,109 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 208 transitions, 2025 flow [2024-06-04 16:11:41,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:41,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:11:41,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:11:41,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 16:11:41,110 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:11:41,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:11:41,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1496058667, now seen corresponding path program 12 times [2024-06-04 16:11:41,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:11:41,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353500681] [2024-06-04 16:11:41,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:11:41,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:11:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:11:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:11:45,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:11:45,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353500681] [2024-06-04 16:11:45,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353500681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:11:45,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:11:45,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:11:45,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492659674] [2024-06-04 16:11:45,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:11:45,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:11:45,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:11:45,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:11:45,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:11:45,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:11:45,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 208 transitions, 2025 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:45,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:11:45,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:11:45,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:11:46,553 INFO L124 PetriNetUnfolderBase]: 687/1331 cut-off events. [2024-06-04 16:11:46,553 INFO L125 PetriNetUnfolderBase]: For 285862/285862 co-relation queries the response was YES. [2024-06-04 16:11:46,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10412 conditions, 1331 events. 687/1331 cut-off events. For 285862/285862 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7553 event pairs, 206 based on Foata normal form. 10/1341 useless extension candidates. Maximal degree in co-relation 10264. Up to 1196 conditions per place. [2024-06-04 16:11:46,566 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 25 changer transitions 12/228 dead transitions. [2024-06-04 16:11:46,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 228 transitions, 2579 flow [2024-06-04 16:11:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:11:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:11:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 16:11:46,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 16:11:46,567 INFO L175 Difference]: Start difference. First operand has 295 places, 208 transitions, 2025 flow. Second operand 11 states and 122 transitions. [2024-06-04 16:11:46,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 228 transitions, 2579 flow [2024-06-04 16:11:47,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 228 transitions, 2523 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 16:11:47,600 INFO L231 Difference]: Finished difference. Result has 294 places, 204 transitions, 1993 flow [2024-06-04 16:11:47,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1969, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1993, PETRI_PLACES=294, PETRI_TRANSITIONS=204} [2024-06-04 16:11:47,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-04 16:11:47,601 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 204 transitions, 1993 flow [2024-06-04 16:11:47,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:47,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:11:47,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:11:47,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 16:11:47,601 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:11:47,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:11:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1115054391, now seen corresponding path program 13 times [2024-06-04 16:11:47,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:11:47,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031283661] [2024-06-04 16:11:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:11:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:11:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:11:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:11:52,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:11:52,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031283661] [2024-06-04 16:11:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031283661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:11:52,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:11:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:11:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753305083] [2024-06-04 16:11:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:11:52,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:11:52,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:11:52,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:11:52,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:11:52,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:11:52,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 204 transitions, 1993 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:52,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:11:52,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:11:52,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:11:53,220 INFO L124 PetriNetUnfolderBase]: 678/1318 cut-off events. [2024-06-04 16:11:53,220 INFO L125 PetriNetUnfolderBase]: For 282314/282316 co-relation queries the response was YES. [2024-06-04 16:11:53,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10305 conditions, 1318 events. 678/1318 cut-off events. For 282314/282316 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7472 event pairs, 171 based on Foata normal form. 10/1328 useless extension candidates. Maximal degree in co-relation 10158. Up to 1069 conditions per place. [2024-06-04 16:11:53,233 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 45 changer transitions 12/225 dead transitions. [2024-06-04 16:11:53,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 225 transitions, 2547 flow [2024-06-04 16:11:53,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:11:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:11:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 16:11:53,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 16:11:53,234 INFO L175 Difference]: Start difference. First operand has 294 places, 204 transitions, 1993 flow. Second operand 11 states and 123 transitions. [2024-06-04 16:11:53,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 225 transitions, 2547 flow [2024-06-04 16:11:53,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 225 transitions, 2480 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-04 16:11:53,997 INFO L231 Difference]: Finished difference. Result has 289 places, 200 transitions, 1993 flow [2024-06-04 16:11:53,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1993, PETRI_PLACES=289, PETRI_TRANSITIONS=200} [2024-06-04 16:11:53,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-04 16:11:53,997 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 200 transitions, 1993 flow [2024-06-04 16:11:53,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:53,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:11:53,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:11:53,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 16:11:53,998 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:11:53,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:11:53,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1496326073, now seen corresponding path program 25 times [2024-06-04 16:11:53,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:11:53,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620773446] [2024-06-04 16:11:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:11:53,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:11:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:11:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:11:58,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:11:58,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620773446] [2024-06-04 16:11:58,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620773446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:11:58,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:11:58,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:11:58,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698718513] [2024-06-04 16:11:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:11:58,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:11:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:11:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:11:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:11:58,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:11:58,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 200 transitions, 1993 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:11:58,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:11:58,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:11:58,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:11:59,342 INFO L124 PetriNetUnfolderBase]: 657/1273 cut-off events. [2024-06-04 16:11:59,342 INFO L125 PetriNetUnfolderBase]: For 238267/238267 co-relation queries the response was YES. [2024-06-04 16:11:59,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10238 conditions, 1273 events. 657/1273 cut-off events. For 238267/238267 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7135 event pairs, 202 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 10092. Up to 1183 conditions per place. [2024-06-04 16:11:59,352 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 27 changer transitions 0/214 dead transitions. [2024-06-04 16:11:59,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 214 transitions, 2527 flow [2024-06-04 16:11:59,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:11:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:11:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 16:11:59,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 16:11:59,354 INFO L175 Difference]: Start difference. First operand has 289 places, 200 transitions, 1993 flow. Second operand 10 states and 106 transitions. [2024-06-04 16:11:59,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 214 transitions, 2527 flow [2024-06-04 16:12:00,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 214 transitions, 2431 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 16:12:00,182 INFO L231 Difference]: Finished difference. Result has 284 places, 201 transitions, 2027 flow [2024-06-04 16:12:00,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2027, PETRI_PLACES=284, PETRI_TRANSITIONS=201} [2024-06-04 16:12:00,182 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 16:12:00,182 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 201 transitions, 2027 flow [2024-06-04 16:12:00,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:00,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:12:00,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:12:00,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 16:12:00,183 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:12:00,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:12:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash 907983815, now seen corresponding path program 26 times [2024-06-04 16:12:00,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:12:00,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274514841] [2024-06-04 16:12:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:12:00,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:12:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:12:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:12:04,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:12:04,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274514841] [2024-06-04 16:12:04,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274514841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:12:04,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:12:04,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:12:04,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389827076] [2024-06-04 16:12:04,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:12:04,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:12:04,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:12:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:12:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:12:04,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:12:04,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 201 transitions, 2027 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:04,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:12:04,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:12:04,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:12:05,336 INFO L124 PetriNetUnfolderBase]: 654/1270 cut-off events. [2024-06-04 16:12:05,336 INFO L125 PetriNetUnfolderBase]: For 221248/221250 co-relation queries the response was YES. [2024-06-04 16:12:05,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9836 conditions, 1270 events. 654/1270 cut-off events. For 221248/221250 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7098 event pairs, 162 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 9692. Up to 1092 conditions per place. [2024-06-04 16:12:05,349 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 173 selfloop transitions, 40 changer transitions 0/215 dead transitions. [2024-06-04 16:12:05,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 215 transitions, 2491 flow [2024-06-04 16:12:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:12:05,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:12:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-04 16:12:05,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-04 16:12:05,350 INFO L175 Difference]: Start difference. First operand has 284 places, 201 transitions, 2027 flow. Second operand 10 states and 104 transitions. [2024-06-04 16:12:05,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 215 transitions, 2491 flow [2024-06-04 16:12:06,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 215 transitions, 2371 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-04 16:12:06,175 INFO L231 Difference]: Finished difference. Result has 286 places, 201 transitions, 1991 flow [2024-06-04 16:12:06,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1991, PETRI_PLACES=286, PETRI_TRANSITIONS=201} [2024-06-04 16:12:06,175 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-04 16:12:06,175 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 201 transitions, 1991 flow [2024-06-04 16:12:06,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:06,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:12:06,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:12:06,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 16:12:06,176 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:12:06,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:12:06,177 INFO L85 PathProgramCache]: Analyzing trace with hash -748947017, now seen corresponding path program 14 times [2024-06-04 16:12:06,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:12:06,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075555234] [2024-06-04 16:12:06,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:12:06,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:12:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:12:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:12:11,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:12:11,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075555234] [2024-06-04 16:12:11,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075555234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:12:11,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:12:11,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:12:11,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793674735] [2024-06-04 16:12:11,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:12:11,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:12:11,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:12:11,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:12:11,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:12:11,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:12:11,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 201 transitions, 1991 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:11,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:12:11,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:12:11,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:12:12,179 INFO L124 PetriNetUnfolderBase]: 641/1247 cut-off events. [2024-06-04 16:12:12,179 INFO L125 PetriNetUnfolderBase]: For 213418/213420 co-relation queries the response was YES. [2024-06-04 16:12:12,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8699 conditions, 1247 events. 641/1247 cut-off events. For 213418/213420 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6984 event pairs, 159 based on Foata normal form. 10/1257 useless extension candidates. Maximal degree in co-relation 8554. Up to 1025 conditions per place. [2024-06-04 16:12:12,193 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 168 selfloop transitions, 40 changer transitions 11/221 dead transitions. [2024-06-04 16:12:12,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 221 transitions, 2531 flow [2024-06-04 16:12:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:12:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:12:12,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 16:12:12,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 16:12:12,194 INFO L175 Difference]: Start difference. First operand has 286 places, 201 transitions, 1991 flow. Second operand 11 states and 118 transitions. [2024-06-04 16:12:12,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 221 transitions, 2531 flow [2024-06-04 16:12:12,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 221 transitions, 2311 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-06-04 16:12:12,825 INFO L231 Difference]: Finished difference. Result has 285 places, 198 transitions, 1835 flow [2024-06-04 16:12:12,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1835, PETRI_PLACES=285, PETRI_TRANSITIONS=198} [2024-06-04 16:12:12,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-04 16:12:12,825 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 198 transitions, 1835 flow [2024-06-04 16:12:12,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:12,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:12:12,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:12:12,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 16:12:12,825 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:12:12,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:12:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1806357237, now seen corresponding path program 15 times [2024-06-04 16:12:12,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:12:12,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710737979] [2024-06-04 16:12:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:12:12,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:12:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:12:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:12:17,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:12:17,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710737979] [2024-06-04 16:12:17,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710737979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:12:17,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:12:17,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:12:17,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779198698] [2024-06-04 16:12:17,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:12:17,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:12:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:12:17,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:12:17,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:12:17,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:12:17,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 198 transitions, 1835 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:17,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:12:17,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:12:17,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:12:18,295 INFO L124 PetriNetUnfolderBase]: 602/1172 cut-off events. [2024-06-04 16:12:18,295 INFO L125 PetriNetUnfolderBase]: For 164039/164039 co-relation queries the response was YES. [2024-06-04 16:12:18,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7097 conditions, 1172 events. 602/1172 cut-off events. For 164039/164039 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6513 event pairs, 165 based on Foata normal form. 10/1182 useless extension candidates. Maximal degree in co-relation 6955. Up to 1046 conditions per place. [2024-06-04 16:12:18,307 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 23 changer transitions 11/217 dead transitions. [2024-06-04 16:12:18,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 217 transitions, 2361 flow [2024-06-04 16:12:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:12:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:12:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 16:12:18,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 16:12:18,308 INFO L175 Difference]: Start difference. First operand has 285 places, 198 transitions, 1835 flow. Second operand 11 states and 118 transitions. [2024-06-04 16:12:18,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 217 transitions, 2361 flow [2024-06-04 16:12:18,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 217 transitions, 2277 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 16:12:18,767 INFO L231 Difference]: Finished difference. Result has 282 places, 195 transitions, 1781 flow [2024-06-04 16:12:18,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1781, PETRI_PLACES=282, PETRI_TRANSITIONS=195} [2024-06-04 16:12:18,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-04 16:12:18,767 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 195 transitions, 1781 flow [2024-06-04 16:12:18,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:18,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:12:18,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:12:18,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 16:12:18,768 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:12:18,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:12:18,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1248164695, now seen corresponding path program 27 times [2024-06-04 16:12:18,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:12:18,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816610499] [2024-06-04 16:12:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:12:18,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:12:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:12:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:12:22,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:12:22,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816610499] [2024-06-04 16:12:22,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816610499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:12:22,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:12:22,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:12:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096119567] [2024-06-04 16:12:22,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:12:22,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:12:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:12:22,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:12:22,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:12:22,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:12:22,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 195 transitions, 1781 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:22,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:12:22,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:12:22,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:12:23,383 INFO L124 PetriNetUnfolderBase]: 560/1094 cut-off events. [2024-06-04 16:12:23,383 INFO L125 PetriNetUnfolderBase]: For 112066/112066 co-relation queries the response was YES. [2024-06-04 16:12:23,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5462 conditions, 1094 events. 560/1094 cut-off events. For 112066/112066 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6074 event pairs, 149 based on Foata normal form. 12/1106 useless extension candidates. Maximal degree in co-relation 5321. Up to 988 conditions per place. [2024-06-04 16:12:23,394 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 22 changer transitions 5/212 dead transitions. [2024-06-04 16:12:23,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 212 transitions, 2285 flow [2024-06-04 16:12:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:12:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:12:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 16:12:23,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 16:12:23,395 INFO L175 Difference]: Start difference. First operand has 282 places, 195 transitions, 1781 flow. Second operand 11 states and 115 transitions. [2024-06-04 16:12:23,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 212 transitions, 2285 flow [2024-06-04 16:12:23,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 212 transitions, 2185 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-04 16:12:23,648 INFO L231 Difference]: Finished difference. Result has 279 places, 194 transitions, 1723 flow [2024-06-04 16:12:23,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1723, PETRI_PLACES=279, PETRI_TRANSITIONS=194} [2024-06-04 16:12:23,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-04 16:12:23,648 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 194 transitions, 1723 flow [2024-06-04 16:12:23,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:23,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:12:23,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:12:23,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 16:12:23,649 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:12:23,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:12:23,649 INFO L85 PathProgramCache]: Analyzing trace with hash -934188759, now seen corresponding path program 16 times [2024-06-04 16:12:23,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:12:23,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445930901] [2024-06-04 16:12:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:12:23,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:12:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:12:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:12:28,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:12:28,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445930901] [2024-06-04 16:12:28,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445930901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:12:28,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:12:28,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:12:28,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261815505] [2024-06-04 16:12:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:12:28,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:12:28,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:12:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:12:28,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:12:28,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:12:28,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 194 transitions, 1723 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:28,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:12:28,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:12:28,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:12:28,652 INFO L124 PetriNetUnfolderBase]: 560/1102 cut-off events. [2024-06-04 16:12:28,652 INFO L125 PetriNetUnfolderBase]: For 88514/88514 co-relation queries the response was YES. [2024-06-04 16:12:28,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5359 conditions, 1102 events. 560/1102 cut-off events. For 88514/88514 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6140 event pairs, 147 based on Foata normal form. 8/1110 useless extension candidates. Maximal degree in co-relation 5219. Up to 978 conditions per place. [2024-06-04 16:12:28,663 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 18 changer transitions 10/212 dead transitions. [2024-06-04 16:12:28,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 212 transitions, 2229 flow [2024-06-04 16:12:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:12:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:12:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 16:12:28,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 16:12:28,664 INFO L175 Difference]: Start difference. First operand has 279 places, 194 transitions, 1723 flow. Second operand 10 states and 109 transitions. [2024-06-04 16:12:28,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 212 transitions, 2229 flow [2024-06-04 16:12:28,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 212 transitions, 2171 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 16:12:28,901 INFO L231 Difference]: Finished difference. Result has 279 places, 191 transitions, 1681 flow [2024-06-04 16:12:28,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1681, PETRI_PLACES=279, PETRI_TRANSITIONS=191} [2024-06-04 16:12:28,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-04 16:12:28,902 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 191 transitions, 1681 flow [2024-06-04 16:12:28,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:28,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:12:28,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:12:28,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 16:12:28,902 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:12:28,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:12:28,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1248156759, now seen corresponding path program 17 times [2024-06-04 16:12:28,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:12:28,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095972254] [2024-06-04 16:12:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:12:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:12:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:12:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:12:33,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:12:33,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095972254] [2024-06-04 16:12:33,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095972254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:12:33,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:12:33,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:12:33,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036301458] [2024-06-04 16:12:33,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:12:33,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:12:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:12:33,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:12:33,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:12:33,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:12:33,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 191 transitions, 1681 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:33,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:12:33,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:12:33,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:12:34,252 INFO L124 PetriNetUnfolderBase]: 551/1079 cut-off events. [2024-06-04 16:12:34,252 INFO L125 PetriNetUnfolderBase]: For 96220/96220 co-relation queries the response was YES. [2024-06-04 16:12:34,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 1079 events. 551/1079 cut-off events. For 96220/96220 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5983 event pairs, 149 based on Foata normal form. 10/1089 useless extension candidates. Maximal degree in co-relation 5117. Up to 978 conditions per place. [2024-06-04 16:12:34,262 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 19 changer transitions 9/212 dead transitions. [2024-06-04 16:12:34,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 212 transitions, 2207 flow [2024-06-04 16:12:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:12:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:12:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-04 16:12:34,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-04 16:12:34,262 INFO L175 Difference]: Start difference. First operand has 279 places, 191 transitions, 1681 flow. Second operand 12 states and 121 transitions. [2024-06-04 16:12:34,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 212 transitions, 2207 flow [2024-06-04 16:12:34,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 212 transitions, 2098 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 16:12:34,530 INFO L231 Difference]: Finished difference. Result has 278 places, 190 transitions, 1615 flow [2024-06-04 16:12:34,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1615, PETRI_PLACES=278, PETRI_TRANSITIONS=190} [2024-06-04 16:12:34,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-04 16:12:34,530 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 190 transitions, 1615 flow [2024-06-04 16:12:34,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:34,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:12:34,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:12:34,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 16:12:34,530 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:12:34,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:12:34,531 INFO L85 PathProgramCache]: Analyzing trace with hash -923146869, now seen corresponding path program 18 times [2024-06-04 16:12:34,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:12:34,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274116327] [2024-06-04 16:12:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:12:34,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:12:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:12:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:12:38,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:12:38,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274116327] [2024-06-04 16:12:38,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274116327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:12:38,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:12:38,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 16:12:38,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890360144] [2024-06-04 16:12:38,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:12:38,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 16:12:38,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:12:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 16:12:38,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:12:38,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:12:38,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 190 transitions, 1615 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:38,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:12:38,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:12:38,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:12:39,052 INFO L124 PetriNetUnfolderBase]: 559/1103 cut-off events. [2024-06-04 16:12:39,052 INFO L125 PetriNetUnfolderBase]: For 123242/123242 co-relation queries the response was YES. [2024-06-04 16:12:39,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6033 conditions, 1103 events. 559/1103 cut-off events. For 123242/123242 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6120 event pairs, 153 based on Foata normal form. 8/1111 useless extension candidates. Maximal degree in co-relation 5893. Up to 927 conditions per place. [2024-06-04 16:12:39,062 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 14 changer transitions 11/212 dead transitions. [2024-06-04 16:12:39,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 212 transitions, 2349 flow [2024-06-04 16:12:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:12:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:12:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 16:12:39,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-04 16:12:39,063 INFO L175 Difference]: Start difference. First operand has 278 places, 190 transitions, 1615 flow. Second operand 11 states and 116 transitions. [2024-06-04 16:12:39,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 212 transitions, 2349 flow [2024-06-04 16:12:39,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 212 transitions, 2291 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 16:12:39,385 INFO L231 Difference]: Finished difference. Result has 276 places, 186 transitions, 1569 flow [2024-06-04 16:12:39,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1569, PETRI_PLACES=276, PETRI_TRANSITIONS=186} [2024-06-04 16:12:39,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-04 16:12:39,386 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 186 transitions, 1569 flow [2024-06-04 16:12:39,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:39,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:12:39,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:12:39,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 16:12:39,386 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:12:39,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:12:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1247897289, now seen corresponding path program 19 times [2024-06-04 16:12:39,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:12:39,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270714911] [2024-06-04 16:12:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:12:39,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:12:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:12:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:12:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:12:48,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270714911] [2024-06-04 16:12:48,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270714911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:12:48,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:12:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:12:48,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010983768] [2024-06-04 16:12:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:12:48,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:12:48,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:12:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:12:48,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:12:48,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:12:48,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 186 transitions, 1569 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:48,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:12:48,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:12:48,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:12:49,424 INFO L124 PetriNetUnfolderBase]: 552/1090 cut-off events. [2024-06-04 16:12:49,425 INFO L125 PetriNetUnfolderBase]: For 132816/132816 co-relation queries the response was YES. [2024-06-04 16:12:49,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5947 conditions, 1090 events. 552/1090 cut-off events. For 132816/132816 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6040 event pairs, 163 based on Foata normal form. 10/1100 useless extension candidates. Maximal degree in co-relation 5808. Up to 1000 conditions per place. [2024-06-04 16:12:49,435 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 15 changer transitions 9/204 dead transitions. [2024-06-04 16:12:49,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 204 transitions, 2055 flow [2024-06-04 16:12:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 16:12:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 16:12:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-04 16:12:49,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-04 16:12:49,436 INFO L175 Difference]: Start difference. First operand has 276 places, 186 transitions, 1569 flow. Second operand 12 states and 116 transitions. [2024-06-04 16:12:49,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 204 transitions, 2055 flow [2024-06-04 16:12:49,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 204 transitions, 2019 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 16:12:49,773 INFO L231 Difference]: Finished difference. Result has 272 places, 183 transitions, 1551 flow [2024-06-04 16:12:49,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1551, PETRI_PLACES=272, PETRI_TRANSITIONS=183} [2024-06-04 16:12:49,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-04 16:12:49,773 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 183 transitions, 1551 flow [2024-06-04 16:12:49,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:49,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:12:49,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:12:49,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 16:12:49,774 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:12:49,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:12:49,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1247887989, now seen corresponding path program 20 times [2024-06-04 16:12:49,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:12:49,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289217307] [2024-06-04 16:12:49,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:12:49,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:12:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:12:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:12:54,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:12:54,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289217307] [2024-06-04 16:12:54,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289217307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:12:54,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:12:54,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:12:54,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125889260] [2024-06-04 16:12:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:12:54,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:12:54,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:12:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:12:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:12:54,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:12:54,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 183 transitions, 1551 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:54,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:12:54,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:12:54,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:12:55,264 INFO L124 PetriNetUnfolderBase]: 526/1044 cut-off events. [2024-06-04 16:12:55,265 INFO L125 PetriNetUnfolderBase]: For 99426/99426 co-relation queries the response was YES. [2024-06-04 16:12:55,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5294 conditions, 1044 events. 526/1044 cut-off events. For 99426/99426 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5736 event pairs, 151 based on Foata normal form. 8/1052 useless extension candidates. Maximal degree in co-relation 5158. Up to 964 conditions per place. [2024-06-04 16:12:55,273 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 176 selfloop transitions, 12 changer transitions 10/200 dead transitions. [2024-06-04 16:12:55,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 200 transitions, 2017 flow [2024-06-04 16:12:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:12:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:12:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-04 16:12:55,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-04 16:12:55,274 INFO L175 Difference]: Start difference. First operand has 272 places, 183 transitions, 1551 flow. Second operand 11 states and 108 transitions. [2024-06-04 16:12:55,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 200 transitions, 2017 flow [2024-06-04 16:12:55,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 200 transitions, 1981 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 16:12:55,543 INFO L231 Difference]: Finished difference. Result has 269 places, 180 transitions, 1524 flow [2024-06-04 16:12:55,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1524, PETRI_PLACES=269, PETRI_TRANSITIONS=180} [2024-06-04 16:12:55,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-04 16:12:55,543 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 180 transitions, 1524 flow [2024-06-04 16:12:55,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:12:55,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:12:55,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:12:55,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 16:12:55,544 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:12:55,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:12:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash -706461052, now seen corresponding path program 1 times [2024-06-04 16:12:55,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:12:55,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758783681] [2024-06-04 16:12:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:12:55,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:12:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:13:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:13:00,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:13:00,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758783681] [2024-06-04 16:13:00,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758783681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:13:00,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:13:00,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:13:00,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393721667] [2024-06-04 16:13:00,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:13:00,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:13:00,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:13:00,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:13:00,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:13:00,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:13:00,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 180 transitions, 1524 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:00,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:13:00,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:13:00,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:13:00,893 INFO L124 PetriNetUnfolderBase]: 515/1023 cut-off events. [2024-06-04 16:13:00,894 INFO L125 PetriNetUnfolderBase]: For 90052/90052 co-relation queries the response was YES. [2024-06-04 16:13:00,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5159 conditions, 1023 events. 515/1023 cut-off events. For 90052/90052 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5600 event pairs, 78 based on Foata normal form. 6/1029 useless extension candidates. Maximal degree in co-relation 5024. Up to 729 conditions per place. [2024-06-04 16:13:00,903 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 141 selfloop transitions, 25 changer transitions 32/200 dead transitions. [2024-06-04 16:13:00,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 200 transitions, 1968 flow [2024-06-04 16:13:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:13:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:13:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-04 16:13:00,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-04 16:13:00,904 INFO L175 Difference]: Start difference. First operand has 269 places, 180 transitions, 1524 flow. Second operand 11 states and 111 transitions. [2024-06-04 16:13:00,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 200 transitions, 1968 flow [2024-06-04 16:13:01,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 200 transitions, 1938 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 16:13:01,148 INFO L231 Difference]: Finished difference. Result has 265 places, 162 transitions, 1368 flow [2024-06-04 16:13:01,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1368, PETRI_PLACES=265, PETRI_TRANSITIONS=162} [2024-06-04 16:13:01,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-04 16:13:01,149 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 162 transitions, 1368 flow [2024-06-04 16:13:01,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:01,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:13:01,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:13:01,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 16:13:01,149 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:13:01,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:13:01,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1472195788, now seen corresponding path program 2 times [2024-06-04 16:13:01,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:13:01,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070894600] [2024-06-04 16:13:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:13:01,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:13:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:13:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:13:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:13:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070894600] [2024-06-04 16:13:05,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070894600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:13:05,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:13:05,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:13:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970999560] [2024-06-04 16:13:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:13:05,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:13:05,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:13:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:13:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:13:06,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:13:06,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 162 transitions, 1368 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:06,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:13:06,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:13:06,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:13:06,697 INFO L124 PetriNetUnfolderBase]: 469/943 cut-off events. [2024-06-04 16:13:06,697 INFO L125 PetriNetUnfolderBase]: For 120335/120335 co-relation queries the response was YES. [2024-06-04 16:13:06,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 943 events. 469/943 cut-off events. For 120335/120335 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5029 event pairs, 103 based on Foata normal form. 6/949 useless extension candidates. Maximal degree in co-relation 5455. Up to 684 conditions per place. [2024-06-04 16:13:06,705 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 35 changer transitions 11/184 dead transitions. [2024-06-04 16:13:06,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 184 transitions, 2006 flow [2024-06-04 16:13:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:13:06,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:13:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 16:13:06,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 16:13:06,706 INFO L175 Difference]: Start difference. First operand has 265 places, 162 transitions, 1368 flow. Second operand 11 states and 122 transitions. [2024-06-04 16:13:06,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 184 transitions, 2006 flow [2024-06-04 16:13:06,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 184 transitions, 1928 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-04 16:13:06,974 INFO L231 Difference]: Finished difference. Result has 247 places, 158 transitions, 1345 flow [2024-06-04 16:13:06,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1345, PETRI_PLACES=247, PETRI_TRANSITIONS=158} [2024-06-04 16:13:06,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-04 16:13:06,974 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 158 transitions, 1345 flow [2024-06-04 16:13:06,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:06,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:13:06,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:13:06,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 16:13:06,975 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:13:06,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:13:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash 367775966, now seen corresponding path program 3 times [2024-06-04 16:13:06,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:13:06,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470284114] [2024-06-04 16:13:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:13:06,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:13:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:13:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:13:11,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:13:11,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470284114] [2024-06-04 16:13:11,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470284114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:13:11,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:13:11,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 16:13:11,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380874281] [2024-06-04 16:13:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:13:11,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:13:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:13:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:13:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:13:11,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 16:13:11,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 158 transitions, 1345 flow. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:11,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:13:11,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 16:13:11,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:13:12,361 INFO L124 PetriNetUnfolderBase]: 457/923 cut-off events. [2024-06-04 16:13:12,361 INFO L125 PetriNetUnfolderBase]: For 110206/110206 co-relation queries the response was YES. [2024-06-04 16:13:12,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 923 events. 457/923 cut-off events. For 110206/110206 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4892 event pairs, 101 based on Foata normal form. 6/929 useless extension candidates. Maximal degree in co-relation 5318. Up to 751 conditions per place. [2024-06-04 16:13:12,369 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 21 changer transitions 22/176 dead transitions. [2024-06-04 16:13:12,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 176 transitions, 1737 flow [2024-06-04 16:13:12,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:13:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:13:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 16:13:12,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 16:13:12,370 INFO L175 Difference]: Start difference. First operand has 247 places, 158 transitions, 1345 flow. Second operand 11 states and 122 transitions. [2024-06-04 16:13:12,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 176 transitions, 1737 flow [2024-06-04 16:13:12,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 176 transitions, 1665 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 16:13:12,630 INFO L231 Difference]: Finished difference. Result has 244 places, 149 transitions, 1233 flow [2024-06-04 16:13:12,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1233, PETRI_PLACES=244, PETRI_TRANSITIONS=149} [2024-06-04 16:13:12,631 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 16:13:12,631 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 149 transitions, 1233 flow [2024-06-04 16:13:12,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:12,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:13:12,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:13:12,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 16:13:12,631 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:13:12,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:13:12,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1472368768, now seen corresponding path program 4 times [2024-06-04 16:13:12,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:13:12,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287889195] [2024-06-04 16:13:12,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:13:12,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:13:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:13:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:13:17,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:13:17,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287889195] [2024-06-04 16:13:17,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287889195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:13:17,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:13:17,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:13:17,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162149811] [2024-06-04 16:13:17,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:13:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:13:17,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:13:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:13:17,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:13:17,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:13:17,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 149 transitions, 1233 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:17,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:13:17,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:13:17,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:13:18,450 INFO L124 PetriNetUnfolderBase]: 427/869 cut-off events. [2024-06-04 16:13:18,450 INFO L125 PetriNetUnfolderBase]: For 104341/104341 co-relation queries the response was YES. [2024-06-04 16:13:18,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5160 conditions, 869 events. 427/869 cut-off events. For 104341/104341 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4559 event pairs, 95 based on Foata normal form. 6/875 useless extension candidates. Maximal degree in co-relation 5050. Up to 630 conditions per place. [2024-06-04 16:13:18,456 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 32 changer transitions 11/171 dead transitions. [2024-06-04 16:13:18,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 171 transitions, 1837 flow [2024-06-04 16:13:18,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:13:18,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:13:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 16:13:18,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 16:13:18,456 INFO L175 Difference]: Start difference. First operand has 244 places, 149 transitions, 1233 flow. Second operand 11 states and 120 transitions. [2024-06-04 16:13:18,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 171 transitions, 1837 flow [2024-06-04 16:13:18,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 171 transitions, 1771 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-04 16:13:18,678 INFO L231 Difference]: Finished difference. Result has 234 places, 145 transitions, 1203 flow [2024-06-04 16:13:18,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1203, PETRI_PLACES=234, PETRI_TRANSITIONS=145} [2024-06-04 16:13:18,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-04 16:13:18,678 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 145 transitions, 1203 flow [2024-06-04 16:13:18,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:18,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:13:18,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:13:18,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 16:13:18,679 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:13:18,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:13:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1472375526, now seen corresponding path program 1 times [2024-06-04 16:13:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:13:18,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151753865] [2024-06-04 16:13:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:13:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:13:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:13:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:13:23,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:13:23,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151753865] [2024-06-04 16:13:23,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151753865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:13:23,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:13:23,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:13:23,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879859669] [2024-06-04 16:13:23,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:13:23,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:13:23,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:13:23,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:13:23,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:13:23,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:13:23,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 145 transitions, 1203 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:23,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:13:23,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:13:23,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:13:24,084 INFO L124 PetriNetUnfolderBase]: 397/811 cut-off events. [2024-06-04 16:13:24,084 INFO L125 PetriNetUnfolderBase]: For 75602/75602 co-relation queries the response was YES. [2024-06-04 16:13:24,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4230 conditions, 811 events. 397/811 cut-off events. For 75602/75602 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4190 event pairs, 87 based on Foata normal form. 8/819 useless extension candidates. Maximal degree in co-relation 4125. Up to 630 conditions per place. [2024-06-04 16:13:24,090 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 28 changer transitions 14/163 dead transitions. [2024-06-04 16:13:24,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 163 transitions, 1607 flow [2024-06-04 16:13:24,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:13:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:13:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 16:13:24,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 16:13:24,091 INFO L175 Difference]: Start difference. First operand has 234 places, 145 transitions, 1203 flow. Second operand 11 states and 115 transitions. [2024-06-04 16:13:24,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 163 transitions, 1607 flow [2024-06-04 16:13:24,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 163 transitions, 1541 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 16:13:24,238 INFO L231 Difference]: Finished difference. Result has 232 places, 140 transitions, 1150 flow [2024-06-04 16:13:24,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1150, PETRI_PLACES=232, PETRI_TRANSITIONS=140} [2024-06-04 16:13:24,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-04 16:13:24,238 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 140 transitions, 1150 flow [2024-06-04 16:13:24,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:24,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:13:24,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:13:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 16:13:24,239 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:13:24,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:13:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1755509008, now seen corresponding path program 5 times [2024-06-04 16:13:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:13:24,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558878396] [2024-06-04 16:13:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:13:24,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:13:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:13:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:13:28,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:13:28,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558878396] [2024-06-04 16:13:28,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558878396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:13:28,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:13:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:13:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984730333] [2024-06-04 16:13:28,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:13:28,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:13:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:13:28,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:13:28,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:13:29,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:13:29,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 140 transitions, 1150 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:29,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:13:29,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:13:29,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:13:29,554 INFO L124 PetriNetUnfolderBase]: 386/790 cut-off events. [2024-06-04 16:13:29,554 INFO L125 PetriNetUnfolderBase]: For 66868/66868 co-relation queries the response was YES. [2024-06-04 16:13:29,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4075 conditions, 790 events. 386/790 cut-off events. For 66868/66868 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4054 event pairs, 79 based on Foata normal form. 6/796 useless extension candidates. Maximal degree in co-relation 3971. Up to 624 conditions per place. [2024-06-04 16:13:29,559 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 18 changer transitions 26/158 dead transitions. [2024-06-04 16:13:29,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 158 transitions, 1510 flow [2024-06-04 16:13:29,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:13:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:13:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 16:13:29,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 16:13:29,560 INFO L175 Difference]: Start difference. First operand has 232 places, 140 transitions, 1150 flow. Second operand 11 states and 112 transitions. [2024-06-04 16:13:29,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 158 transitions, 1510 flow [2024-06-04 16:13:29,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 158 transitions, 1420 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-04 16:13:29,720 INFO L231 Difference]: Finished difference. Result has 224 places, 126 transitions, 986 flow [2024-06-04 16:13:29,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=986, PETRI_PLACES=224, PETRI_TRANSITIONS=126} [2024-06-04 16:13:29,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-04 16:13:29,721 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 126 transitions, 986 flow [2024-06-04 16:13:29,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:29,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:13:29,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:13:29,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 16:13:29,721 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:13:29,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:13:29,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1071377016, now seen corresponding path program 6 times [2024-06-04 16:13:29,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:13:29,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310975936] [2024-06-04 16:13:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:13:29,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:13:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:13:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:13:34,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:13:34,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310975936] [2024-06-04 16:13:34,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310975936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:13:34,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:13:34,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:13:34,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134661711] [2024-06-04 16:13:34,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:13:34,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:13:34,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:13:34,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:13:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:13:35,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:13:35,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 126 transitions, 986 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:35,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:13:35,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:13:35,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:13:35,457 INFO L124 PetriNetUnfolderBase]: 325/660 cut-off events. [2024-06-04 16:13:35,457 INFO L125 PetriNetUnfolderBase]: For 64907/64907 co-relation queries the response was YES. [2024-06-04 16:13:35,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3432 conditions, 660 events. 325/660 cut-off events. For 64907/64907 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3240 event pairs, 67 based on Foata normal form. 6/666 useless extension candidates. Maximal degree in co-relation 3331. Up to 549 conditions per place. [2024-06-04 16:13:35,461 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 14 changer transitions 19/143 dead transitions. [2024-06-04 16:13:35,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 143 transitions, 1308 flow [2024-06-04 16:13:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:13:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:13:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-04 16:13:35,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-04 16:13:35,462 INFO L175 Difference]: Start difference. First operand has 224 places, 126 transitions, 986 flow. Second operand 11 states and 106 transitions. [2024-06-04 16:13:35,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 143 transitions, 1308 flow [2024-06-04 16:13:35,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 143 transitions, 1196 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-06-04 16:13:35,590 INFO L231 Difference]: Finished difference. Result has 210 places, 119 transitions, 855 flow [2024-06-04 16:13:35,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=855, PETRI_PLACES=210, PETRI_TRANSITIONS=119} [2024-06-04 16:13:35,590 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-04 16:13:35,591 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 119 transitions, 855 flow [2024-06-04 16:13:35,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:35,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:13:35,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:13:35,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 16:13:35,591 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:13:35,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:13:35,591 INFO L85 PathProgramCache]: Analyzing trace with hash 110468386, now seen corresponding path program 7 times [2024-06-04 16:13:35,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:13:35,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915088083] [2024-06-04 16:13:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:13:35,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:13:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:13:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:13:41,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:13:41,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915088083] [2024-06-04 16:13:41,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915088083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:13:41,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:13:41,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:13:41,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287133933] [2024-06-04 16:13:41,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:13:41,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:13:41,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:13:41,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:13:41,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:13:41,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:13:41,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 119 transitions, 855 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:41,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:13:41,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:13:41,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:13:41,996 INFO L124 PetriNetUnfolderBase]: 301/616 cut-off events. [2024-06-04 16:13:41,996 INFO L125 PetriNetUnfolderBase]: For 58354/58354 co-relation queries the response was YES. [2024-06-04 16:13:41,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 616 events. 301/616 cut-off events. For 58354/58354 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2955 event pairs, 59 based on Foata normal form. 6/622 useless extension candidates. Maximal degree in co-relation 3043. Up to 508 conditions per place. [2024-06-04 16:13:42,000 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 16 changer transitions 15/136 dead transitions. [2024-06-04 16:13:42,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 136 transitions, 1165 flow [2024-06-04 16:13:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:13:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:13:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-04 16:13:42,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-04 16:13:42,001 INFO L175 Difference]: Start difference. First operand has 210 places, 119 transitions, 855 flow. Second operand 11 states and 106 transitions. [2024-06-04 16:13:42,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 136 transitions, 1165 flow [2024-06-04 16:13:42,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 136 transitions, 1127 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 16:13:42,119 INFO L231 Difference]: Finished difference. Result has 201 places, 114 transitions, 820 flow [2024-06-04 16:13:42,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=820, PETRI_PLACES=201, PETRI_TRANSITIONS=114} [2024-06-04 16:13:42,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-04 16:13:42,119 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 114 transitions, 820 flow [2024-06-04 16:13:42,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:42,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:13:42,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:13:42,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 16:13:42,120 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:13:42,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:13:42,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1401298144, now seen corresponding path program 8 times [2024-06-04 16:13:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:13:42,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294463625] [2024-06-04 16:13:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:13:42,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:13:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:13:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:13:47,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:13:47,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294463625] [2024-06-04 16:13:47,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294463625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:13:47,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:13:47,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:13:47,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782204545] [2024-06-04 16:13:47,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:13:47,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:13:47,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:13:47,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:13:47,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:13:47,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:13:47,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 114 transitions, 820 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:47,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:13:47,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:13:47,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:13:48,019 INFO L124 PetriNetUnfolderBase]: 285/588 cut-off events. [2024-06-04 16:13:48,019 INFO L125 PetriNetUnfolderBase]: For 52451/52451 co-relation queries the response was YES. [2024-06-04 16:13:48,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 588 events. 285/588 cut-off events. For 52451/52451 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2788 event pairs, 60 based on Foata normal form. 6/594 useless extension candidates. Maximal degree in co-relation 2905. Up to 487 conditions per place. [2024-06-04 16:13:48,023 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 18 changer transitions 11/131 dead transitions. [2024-06-04 16:13:48,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 131 transitions, 1124 flow [2024-06-04 16:13:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:13:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:13:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-04 16:13:48,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-04 16:13:48,024 INFO L175 Difference]: Start difference. First operand has 201 places, 114 transitions, 820 flow. Second operand 11 states and 106 transitions. [2024-06-04 16:13:48,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 131 transitions, 1124 flow [2024-06-04 16:13:48,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 131 transitions, 1084 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 16:13:48,111 INFO L231 Difference]: Finished difference. Result has 195 places, 111 transitions, 793 flow [2024-06-04 16:13:48,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=793, PETRI_PLACES=195, PETRI_TRANSITIONS=111} [2024-06-04 16:13:48,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-04 16:13:48,111 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 111 transitions, 793 flow [2024-06-04 16:13:48,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:48,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:13:48,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:13:48,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 16:13:48,112 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:13:48,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:13:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash 114342390, now seen corresponding path program 9 times [2024-06-04 16:13:48,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:13:48,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951691502] [2024-06-04 16:13:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:13:48,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:13:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:13:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:13:53,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:13:53,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951691502] [2024-06-04 16:13:53,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951691502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:13:53,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:13:53,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:13:53,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573684841] [2024-06-04 16:13:53,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:13:53,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:13:53,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:13:53,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:13:53,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:13:53,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:13:53,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 111 transitions, 793 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:53,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:13:53,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:13:53,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:13:54,314 INFO L124 PetriNetUnfolderBase]: 283/586 cut-off events. [2024-06-04 16:13:54,315 INFO L125 PetriNetUnfolderBase]: For 48212/48212 co-relation queries the response was YES. [2024-06-04 16:13:54,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2926 conditions, 586 events. 283/586 cut-off events. For 48212/48212 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2793 event pairs, 60 based on Foata normal form. 6/592 useless extension candidates. Maximal degree in co-relation 2837. Up to 485 conditions per place. [2024-06-04 16:13:54,318 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 96 selfloop transitions, 14 changer transitions 18/130 dead transitions. [2024-06-04 16:13:54,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 130 transitions, 1100 flow [2024-06-04 16:13:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:13:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:13:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-04 16:13:54,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29829545454545453 [2024-06-04 16:13:54,319 INFO L175 Difference]: Start difference. First operand has 195 places, 111 transitions, 793 flow. Second operand 11 states and 105 transitions. [2024-06-04 16:13:54,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 130 transitions, 1100 flow [2024-06-04 16:13:54,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 130 transitions, 1041 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 16:13:54,418 INFO L231 Difference]: Finished difference. Result has 193 places, 107 transitions, 731 flow [2024-06-04 16:13:54,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=731, PETRI_PLACES=193, PETRI_TRANSITIONS=107} [2024-06-04 16:13:54,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-04 16:13:54,419 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 107 transitions, 731 flow [2024-06-04 16:13:54,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:13:54,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:13:54,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:13:54,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 16:13:54,420 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:13:54,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:13:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash 684988506, now seen corresponding path program 10 times [2024-06-04 16:13:54,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:13:54,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706070257] [2024-06-04 16:13:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:13:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:13:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:14:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:14:01,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:14:01,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706070257] [2024-06-04 16:14:01,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706070257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:14:01,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:14:01,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:14:01,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097484025] [2024-06-04 16:14:01,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:14:01,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:14:01,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:14:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:14:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:14:01,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:14:01,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 107 transitions, 731 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:14:01,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:14:01,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:14:01,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:14:01,709 INFO L124 PetriNetUnfolderBase]: 265/552 cut-off events. [2024-06-04 16:14:01,709 INFO L125 PetriNetUnfolderBase]: For 48145/48145 co-relation queries the response was YES. [2024-06-04 16:14:01,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2776 conditions, 552 events. 265/552 cut-off events. For 48145/48145 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2578 event pairs, 59 based on Foata normal form. 6/558 useless extension candidates. Maximal degree in co-relation 2687. Up to 464 conditions per place. [2024-06-04 16:14:01,713 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 16 changer transitions 8/121 dead transitions. [2024-06-04 16:14:01,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 121 transitions, 1003 flow [2024-06-04 16:14:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:14:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:14:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-04 16:14:01,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-04 16:14:01,714 INFO L175 Difference]: Start difference. First operand has 193 places, 107 transitions, 731 flow. Second operand 11 states and 104 transitions. [2024-06-04 16:14:01,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 121 transitions, 1003 flow [2024-06-04 16:14:01,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 121 transitions, 944 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-04 16:14:01,799 INFO L231 Difference]: Finished difference. Result has 186 places, 105 transitions, 696 flow [2024-06-04 16:14:01,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=696, PETRI_PLACES=186, PETRI_TRANSITIONS=105} [2024-06-04 16:14:01,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-04 16:14:01,799 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 105 transitions, 696 flow [2024-06-04 16:14:01,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:14:01,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:14:01,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:14:01,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 16:14:01,800 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:14:01,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:14:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash 951387998, now seen corresponding path program 11 times [2024-06-04 16:14:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:14:01,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567690822] [2024-06-04 16:14:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:14:01,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:14:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:14:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:14:06,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:14:06,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567690822] [2024-06-04 16:14:06,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567690822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:14:06,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:14:06,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 16:14:06,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198545026] [2024-06-04 16:14:06,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:14:06,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 16:14:06,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:14:06,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 16:14:06,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 16:14:07,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-04 16:14:07,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 105 transitions, 696 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:14:07,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:14:07,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-04 16:14:07,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:14:07,711 INFO L124 PetriNetUnfolderBase]: 259/542 cut-off events. [2024-06-04 16:14:07,711 INFO L125 PetriNetUnfolderBase]: For 45344/45344 co-relation queries the response was YES. [2024-06-04 16:14:07,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2667 conditions, 542 events. 259/542 cut-off events. For 45344/45344 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2521 event pairs, 57 based on Foata normal form. 6/548 useless extension candidates. Maximal degree in co-relation 2583. Up to 433 conditions per place. [2024-06-04 16:14:07,715 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 90 selfloop transitions, 19 changer transitions 11/122 dead transitions. [2024-06-04 16:14:07,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 122 transitions, 982 flow [2024-06-04 16:14:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 16:14:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 16:14:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-04 16:14:07,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-04 16:14:07,716 INFO L175 Difference]: Start difference. First operand has 186 places, 105 transitions, 696 flow. Second operand 11 states and 108 transitions. [2024-06-04 16:14:07,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 122 transitions, 982 flow [2024-06-04 16:14:07,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 122 transitions, 946 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 16:14:07,789 INFO L231 Difference]: Finished difference. Result has 184 places, 102 transitions, 686 flow [2024-06-04 16:14:07,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=686, PETRI_PLACES=184, PETRI_TRANSITIONS=102} [2024-06-04 16:14:07,790 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-04 16:14:07,790 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 102 transitions, 686 flow [2024-06-04 16:14:07,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:14:07,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:14:07,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:14:07,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 16:14:07,790 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:14:07,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:14:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1119881050, now seen corresponding path program 12 times [2024-06-04 16:14:07,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:14:07,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188542831] [2024-06-04 16:14:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:14:07,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:14:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15