./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.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_power.oepc_pso.oepc_rmo.oepc.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_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_power.oepc_pso.oepc_rmo.oepc.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 [2024-06-03 22:14:19,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 22:14:19,915 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 22:14:19,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 22:14:19,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 22:14:19,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 22:14:19,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 22:14:19,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 22:14:19,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 22:14:19,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 22:14:19,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 22:14:19,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 22:14:19,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 22:14:19,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 22:14:19,961 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 22:14:19,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 22:14:19,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 22:14:19,962 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 22:14:19,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 22:14:19,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 22:14:19,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 22:14:19,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 22:14:19,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 22:14:19,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 22:14:19,964 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 22:14:19,964 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 22:14:19,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 22:14:19,965 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 22:14:19,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 22:14:19,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 22:14:19,967 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 22:14:19,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 22:14:19,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 22:14:19,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 22:14:19,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 22:14:19,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 22:14:19,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 22:14:19,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 22:14:19,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 22:14:19,983 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 22:14:19,983 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 22:14:19,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 22:14:19,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 22:14:19,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 22:14:20,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 22:14:20,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 22:14:20,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 22:14:20,266 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 22:14:20,266 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 22:14:20,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 22:14:21,428 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 22:14:21,715 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 22:14:21,716 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 22:14:21,732 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a357e37/6606b5f2f71e4417a32cf6681fece5ad/FLAG6bd3a547d [2024-06-03 22:14:21,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67a357e37/6606b5f2f71e4417a32cf6681fece5ad [2024-06-03 22:14:21,752 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 22:14:21,753 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 22:14:21,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-03 22:14:21,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 22:14:21,921 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 22:14:21,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 22:14:21,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 22:14:21,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 22:14:21,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 10:14:21" (1/2) ... [2024-06-03 22:14:21,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4197c2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:14:21, skipping insertion in model container [2024-06-03 22:14:21,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 10:14:21" (1/2) ... [2024-06-03 22:14:21,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52211e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:14:21, skipping insertion in model container [2024-06-03 22:14:21,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 10:14:21" (2/2) ... [2024-06-03 22:14:21,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4197c2aa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:21, skipping insertion in model container [2024-06-03 22:14:21,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 10:14:21" (2/2) ... [2024-06-03 22:14:21,932 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 22:14:21,996 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 22:14:21,998 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] (((((((((((((((! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd2 >= 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_thd2 >= 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$r_buff0_thd2) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd2 >= 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$r_buff1_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$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) && (2LL - (long long )y$w_buff0) + (long long )y$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$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$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$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$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$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$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_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd2 >= 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$r_buff0_thd2 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y + (long long )y$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_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd2 >= 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_thd2 >= 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_thd2 >= 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$r_buff0_thd2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd2 >= 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$r_buff1_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$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_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd2 >= 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$$choice2 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (4LL - (long long )y$w_buff0) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$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_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd2 >= 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$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$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_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd2 >= 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$r_buff0_thd2 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y - (long long )y$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_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd2 >= 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_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! 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 <= 2) && y$w_buff0 <= 127) && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 % 2 == 0) && y$w_buff1 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__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 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! 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) [2024-06-03 22:14:21,999 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd2 >= 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_thd2 >= 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_thd2) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd2 >= 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_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (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) && (2LL - (long long )y$w_buff0) + (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_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd2 >= 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$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$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_thd2 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd2 >= 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_thd2 >= 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_thd2 >= 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_thd2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd2 >= 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_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (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$$choice0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$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_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd2 >= 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_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (4LL - (long long )y$w_buff0) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd2 >= 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_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd2 >= 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_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$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$$choice2 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! 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$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 % 2 == 0) && y$w_buff1 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$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 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! 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) [2024-06-03 22:14:21,999 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 22:14:21,999 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-03 22:14:22,046 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 22:14:22,433 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 22:14:22,447 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 22:14:22,750 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 22:14:22,791 INFO L206 MainTranslator]: Completed translation [2024-06-03 22:14:22,791 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22 WrapperNode [2024-06-03 22:14:22,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 22:14:22,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 22:14:22,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 22:14:22,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 22:14:22,800 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 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:22,842 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 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:22,928 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 132 [2024-06-03 22:14:22,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 22:14:22,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 22:14:22,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 22:14:22,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 22:14:22,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:22,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:22,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:23,053 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]. [2024-06-03 22:14:23,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:23,053 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:23,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:23,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:23,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:23,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:23,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 22:14:23,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 22:14:23,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 22:14:23,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 22:14:23,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (1/1) ... [2024-06-03 22:14:23,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 22:14:23,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 22:14:23,131 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) [2024-06-03 22:14:23,156 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 [2024-06-03 22:14:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 22:14:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 22:14:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 22:14:23,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 22:14:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 22:14:23,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 22:14:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 22:14:23,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 22:14:23,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 22:14:23,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 22:14:23,173 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 22:14:23,320 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 22:14:23,322 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 22:14:24,108 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 22:14:24,108 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 22:14:24,324 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 22:14:24,324 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 22:14:24,326 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 10:14:24 BoogieIcfgContainer [2024-06-03 22:14:24,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 22:14:24,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 22:14:24,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 22:14:24,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 22:14:24,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 10:14:21" (1/4) ... [2024-06-03 22:14:24,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbcfdf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 10:14:24, skipping insertion in model container [2024-06-03 22:14:24,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 10:14:21" (2/4) ... [2024-06-03 22:14:24,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbcfdf2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 10:14:24, skipping insertion in model container [2024-06-03 22:14:24,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:14:22" (3/4) ... [2024-06-03 22:14:24,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbcfdf2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 10:14:24, skipping insertion in model container [2024-06-03 22:14:24,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 10:14:24" (4/4) ... [2024-06-03 22:14:24,335 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 22:14:24,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 22:14:24,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 22:14:24,352 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 22:14:24,429 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 22:14:24,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 22:14:24,514 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-03 22:14:24,520 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 22:14:24,522 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. [2024-06-03 22:14:24,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 22:14:24,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-03 22:14:24,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 22:14:24,544 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;@226ac9af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 22:14:24,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 22:14:24,551 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 22:14:24,551 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 22:14:24,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 22:14:24,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:14:24,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 22:14:24,553 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)] === [2024-06-03 22:14:24,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:14:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash -429952030, now seen corresponding path program 1 times [2024-06-03 22:14:24,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:14:24,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146128310] [2024-06-03 22:14:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:14:24,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:14:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:14:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:14:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:14:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146128310] [2024-06-03 22:14:28,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146128310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:14:28,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:14:28,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 22:14:28,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054537187] [2024-06-03 22:14:28,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:14:28,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 22:14:28,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:14:28,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 22:14:28,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 22:14:28,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 22:14:28,839 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) [2024-06-03 22:14:28,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:14:28,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 22:14:28,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:14:29,137 INFO L124 PetriNetUnfolderBase]: 216/387 cut-off events. [2024-06-03 22:14:29,139 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-03 22:14:29,144 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 1364 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. [2024-06-03 22:14:29,148 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-03 22:14:29,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 125 flow [2024-06-03 22:14:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 22:14:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 22:14:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-03 22:14:29,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 22:14:29,160 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 48 transitions. [2024-06-03 22:14:29,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 125 flow [2024-06-03 22:14:29,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 22:14:29,165 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-03 22:14:29,167 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} [2024-06-03 22:14:29,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-03 22:14:29,170 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-03 22:14:29,170 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) [2024-06-03 22:14:29,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:14:29,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:14:29,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 22:14:29,171 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)] === [2024-06-03 22:14:29,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:14:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash -867008575, now seen corresponding path program 1 times [2024-06-03 22:14:29,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:14:29,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429138070] [2024-06-03 22:14:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:14:29,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:14:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:14:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:14:31,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:14:31,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429138070] [2024-06-03 22:14:31,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429138070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:14:31,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:14:31,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 22:14:31,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619110499] [2024-06-03 22:14:31,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:14:31,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 22:14:31,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:14:31,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 22:14:31,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 22:14:32,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 22:14:32,012 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) [2024-06-03 22:14:32,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:14:32,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 22:14:32,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:14:32,303 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-03 22:14:32,303 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-03 22:14:32,307 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 1329 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. [2024-06-03 22:14:32,310 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-03 22:14:32,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 167 flow [2024-06-03 22:14:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 22:14:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 22:14:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-03 22:14:32,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-03 22:14:32,314 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2024-06-03 22:14:32,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 167 flow [2024-06-03 22:14:32,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 22:14:32,319 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-03 22:14:32,319 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} [2024-06-03 22:14:32,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-03 22:14:32,321 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-03 22:14:32,322 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) [2024-06-03 22:14:32,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:14:32,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:14:32,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 22:14:32,323 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)] === [2024-06-03 22:14:32,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:14:32,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1107460993, now seen corresponding path program 1 times [2024-06-03 22:14:32,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:14:32,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247190825] [2024-06-03 22:14:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:14:32,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:14:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:14:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:14:34,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:14:34,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247190825] [2024-06-03 22:14:34,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247190825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:14:34,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:14:34,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 22:14:34,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505945161] [2024-06-03 22:14:34,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:14:34,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 22:14:34,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:14:34,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 22:14:34,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 22:14:35,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 22:14:35,002 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) [2024-06-03 22:14:35,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:14:35,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 22:14:35,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:14:35,272 INFO L124 PetriNetUnfolderBase]: 214/384 cut-off events. [2024-06-03 22:14:35,272 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-06-03 22:14:35,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 384 events. 214/384 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 78 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 960. Up to 338 conditions per place. [2024-06-03 22:14:35,276 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2024-06-03 22:14:35,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 259 flow [2024-06-03 22:14:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 22:14:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 22:14:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-03 22:14:35,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-03 22:14:35,279 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 78 transitions. [2024-06-03 22:14:35,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 259 flow [2024-06-03 22:14:35,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 250 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 22:14:35,283 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 164 flow [2024-06-03 22:14:35,283 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} [2024-06-03 22:14:35,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-03 22:14:35,285 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 164 flow [2024-06-03 22:14:35,285 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) [2024-06-03 22:14:35,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:14:35,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:14:35,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 22:14:35,288 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)] === [2024-06-03 22:14:35,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:14:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash 28448672, now seen corresponding path program 1 times [2024-06-03 22:14:35,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:14:35,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832921110] [2024-06-03 22:14:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:14:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:14:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:14:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:14:38,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:14:38,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832921110] [2024-06-03 22:14:38,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832921110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:14:38,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:14:38,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 22:14:38,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971657998] [2024-06-03 22:14:38,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:14:38,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 22:14:38,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:14:38,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 22:14:38,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-03 22:14:38,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 22:14:38,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:14:38,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:14:38,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 22:14:38,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:14:38,683 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-03 22:14:38,684 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2024-06-03 22:14:38,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 401 events. 224/401 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1439 event pairs, 48 based on Foata normal form. 4/405 useless extension candidates. Maximal degree in co-relation 1185. Up to 312 conditions per place. [2024-06-03 22:14:38,687 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 45 selfloop transitions, 19 changer transitions 0/66 dead transitions. [2024-06-03 22:14:38,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 398 flow [2024-06-03 22:14:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 22:14:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 22:14:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-03 22:14:38,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 22:14:38,692 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 164 flow. Second operand 6 states and 96 transitions. [2024-06-03 22:14:38,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 398 flow [2024-06-03 22:14:38,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 394 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-03 22:14:38,696 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 279 flow [2024-06-03 22:14:38,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-06-03 22:14:38,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-03 22:14:38,697 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 279 flow [2024-06-03 22:14:38,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:14:38,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:14:38,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:14:38,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 22:14:38,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 22:14:38,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:14:38,698 INFO L85 PathProgramCache]: Analyzing trace with hash -837623048, now seen corresponding path program 1 times [2024-06-03 22:14:38,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:14:38,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206415504] [2024-06-03 22:14:38,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:14:38,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:14:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:14:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:14:41,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:14:41,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206415504] [2024-06-03 22:14:41,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206415504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:14:41,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:14:41,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 22:14:41,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740475633] [2024-06-03 22:14:41,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:14:41,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 22:14:41,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:14:41,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 22:14:41,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 22:14:41,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 22:14:41,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-03 22:14:41,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:14:41,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 22:14:41,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:14:42,331 INFO L124 PetriNetUnfolderBase]: 225/404 cut-off events. [2024-06-03 22:14:42,332 INFO L125 PetriNetUnfolderBase]: For 897/897 co-relation queries the response was YES. [2024-06-03 22:14:42,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 404 events. 225/404 cut-off events. For 897/897 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1451 event pairs, 29 based on Foata normal form. 6/410 useless extension candidates. Maximal degree in co-relation 1440. Up to 319 conditions per place. [2024-06-03 22:14:42,335 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 50 selfloop transitions, 16 changer transitions 0/68 dead transitions. [2024-06-03 22:14:42,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 476 flow [2024-06-03 22:14:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 22:14:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 22:14:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-03 22:14:42,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2024-06-03 22:14:42,337 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 279 flow. Second operand 7 states and 99 transitions. [2024-06-03 22:14:42,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 476 flow [2024-06-03 22:14:42,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 464 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-03 22:14:42,345 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 313 flow [2024-06-03 22:14:42,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-03 22:14:42,352 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-03 22:14:42,352 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 313 flow [2024-06-03 22:14:42,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-03 22:14:42,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:14:42,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:14:42,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 22:14:42,355 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)] === [2024-06-03 22:14:42,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:14:42,355 INFO L85 PathProgramCache]: Analyzing trace with hash 352855075, now seen corresponding path program 1 times [2024-06-03 22:14:42,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:14:42,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643184808] [2024-06-03 22:14:42,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:14:42,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:14:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:14:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:14:47,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:14:47,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643184808] [2024-06-03 22:14:47,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643184808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:14:47,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:14:47,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 22:14:47,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978347260] [2024-06-03 22:14:47,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:14:47,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 22:14:47,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:14:47,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 22:14:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 22:14:47,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:14:47,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 313 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) [2024-06-03 22:14:47,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:14:47,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:14:47,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:14:47,642 INFO L124 PetriNetUnfolderBase]: 223/401 cut-off events. [2024-06-03 22:14:47,642 INFO L125 PetriNetUnfolderBase]: For 1023/1023 co-relation queries the response was YES. [2024-06-03 22:14:47,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 401 events. 223/401 cut-off events. For 1023/1023 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1427 event pairs, 57 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1523. Up to 389 conditions per place. [2024-06-03 22:14:47,646 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 45 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-06-03 22:14:47,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 427 flow [2024-06-03 22:14:47,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 22:14:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 22:14:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-03 22:14:47,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 22:14:47,648 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 313 flow. Second operand 5 states and 56 transitions. [2024-06-03 22:14:47,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 427 flow [2024-06-03 22:14:47,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 390 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-03 22:14:47,651 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 293 flow [2024-06-03 22:14:47,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-03 22:14:47,652 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-03 22:14:47,652 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 293 flow [2024-06-03 22:14:47,653 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) [2024-06-03 22:14:47,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:14:47,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:14:47,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 22:14:47,653 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)] === [2024-06-03 22:14:47,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:14:47,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1946796671, now seen corresponding path program 1 times [2024-06-03 22:14:47,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:14:47,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350438147] [2024-06-03 22:14:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:14:47,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:14:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:14:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:14:52,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:14:52,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350438147] [2024-06-03 22:14:52,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350438147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:14:52,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:14:52,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 22:14:52,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777715628] [2024-06-03 22:14:52,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:14:52,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 22:14:52,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:14:52,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 22:14:52,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 22:14:52,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:14:52,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 293 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) [2024-06-03 22:14:52,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:14:52,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:14:52,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:14:53,209 INFO L124 PetriNetUnfolderBase]: 221/398 cut-off events. [2024-06-03 22:14:53,209 INFO L125 PetriNetUnfolderBase]: For 1189/1189 co-relation queries the response was YES. [2024-06-03 22:14:53,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 398 events. 221/398 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1428 event pairs, 56 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 1488. Up to 383 conditions per place. [2024-06-03 22:14:53,212 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 44 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2024-06-03 22:14:53,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 411 flow [2024-06-03 22:14:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 22:14:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 22:14:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-03 22:14:53,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 22:14:53,214 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 293 flow. Second operand 6 states and 64 transitions. [2024-06-03 22:14:53,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 411 flow [2024-06-03 22:14:53,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 396 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-03 22:14:53,219 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 299 flow [2024-06-03 22:14:53,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-06-03 22:14:53,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-03 22:14:53,220 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 299 flow [2024-06-03 22:14:53,220 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) [2024-06-03 22:14:53,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:14:53,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:14:53,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 22:14:53,221 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)] === [2024-06-03 22:14:53,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:14:53,222 INFO L85 PathProgramCache]: Analyzing trace with hash -587048160, now seen corresponding path program 1 times [2024-06-03 22:14:53,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:14:53,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478492222] [2024-06-03 22:14:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:14:53,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:14:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:14:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:14:57,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:14:57,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478492222] [2024-06-03 22:14:57,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478492222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:14:57,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:14:57,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 22:14:57,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186742903] [2024-06-03 22:14:57,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:14:57,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 22:14:57,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:14:57,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 22:14:57,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 22:14:57,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:14:57,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 299 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) [2024-06-03 22:14:57,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:14:57,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:14:57,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:14:57,871 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-03 22:14:57,872 INFO L125 PetriNetUnfolderBase]: For 1433/1433 co-relation queries the response was YES. [2024-06-03 22:14:57,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 400 events. 222/400 cut-off events. For 1433/1433 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1432 event pairs, 54 based on Foata normal form. 2/402 useless extension candidates. Maximal degree in co-relation 1542. Up to 354 conditions per place. [2024-06-03 22:14:57,875 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 45 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2024-06-03 22:14:57,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 469 flow [2024-06-03 22:14:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 22:14:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 22:14:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-03 22:14:57,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 22:14:57,877 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 299 flow. Second operand 6 states and 72 transitions. [2024-06-03 22:14:57,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 469 flow [2024-06-03 22:14:57,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 443 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 22:14:57,880 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 324 flow [2024-06-03 22:14:57,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-03 22:14:57,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-03 22:14:57,881 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 324 flow [2024-06-03 22:14:57,882 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) [2024-06-03 22:14:57,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:14:57,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:14:57,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 22:14:57,882 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)] === [2024-06-03 22:14:57,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:14:57,883 INFO L85 PathProgramCache]: Analyzing trace with hash -208648830, now seen corresponding path program 2 times [2024-06-03 22:14:57,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:14:57,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400817089] [2024-06-03 22:14:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:14:57,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:14:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:01,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:01,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400817089] [2024-06-03 22:15:01,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400817089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:01,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:01,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 22:15:01,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554022109] [2024-06-03 22:15:01,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:01,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 22:15:01,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:01,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 22:15:01,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 22:15:02,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:02,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 324 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) [2024-06-03 22:15:02,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:02,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:02,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:02,314 INFO L124 PetriNetUnfolderBase]: 217/390 cut-off events. [2024-06-03 22:15:02,314 INFO L125 PetriNetUnfolderBase]: For 1640/1640 co-relation queries the response was YES. [2024-06-03 22:15:02,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 390 events. 217/390 cut-off events. For 1640/1640 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1365 event pairs, 53 based on Foata normal form. 1/391 useless extension candidates. Maximal degree in co-relation 1548. Up to 375 conditions per place. [2024-06-03 22:15:02,317 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 46 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-06-03 22:15:02,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 446 flow [2024-06-03 22:15:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 22:15:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 22:15:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-03 22:15:02,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 22:15:02,319 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 324 flow. Second operand 6 states and 64 transitions. [2024-06-03 22:15:02,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 446 flow [2024-06-03 22:15:02,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 431 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 22:15:02,323 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 330 flow [2024-06-03 22:15:02,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-06-03 22:15:02,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-03 22:15:02,324 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 330 flow [2024-06-03 22:15:02,324 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) [2024-06-03 22:15:02,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:02,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:02,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 22:15:02,325 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)] === [2024-06-03 22:15:02,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash -221153114, now seen corresponding path program 1 times [2024-06-03 22:15:02,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:02,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401596371] [2024-06-03 22:15:02,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:02,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:06,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401596371] [2024-06-03 22:15:06,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401596371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:06,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:06,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 22:15:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065980980] [2024-06-03 22:15:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:06,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 22:15:06,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:06,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 22:15:06,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 22:15:06,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:06,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 330 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) [2024-06-03 22:15:06,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:06,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:06,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:06,508 INFO L124 PetriNetUnfolderBase]: 215/387 cut-off events. [2024-06-03 22:15:06,509 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-06-03 22:15:06,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 387 events. 215/387 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1357 event pairs, 52 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1568. Up to 369 conditions per place. [2024-06-03 22:15:06,512 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-03 22:15:06,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 468 flow [2024-06-03 22:15:06,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 22:15:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 22:15:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-03 22:15:06,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-03 22:15:06,513 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 330 flow. Second operand 7 states and 72 transitions. [2024-06-03 22:15:06,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 468 flow [2024-06-03 22:15:06,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 434 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 22:15:06,517 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 333 flow [2024-06-03 22:15:06,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-03 22:15:06,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-03 22:15:06,518 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 333 flow [2024-06-03 22:15:06,518 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) [2024-06-03 22:15:06,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:06,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:06,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 22:15:06,519 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)] === [2024-06-03 22:15:06,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1018622264, now seen corresponding path program 1 times [2024-06-03 22:15:06,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:06,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510695624] [2024-06-03 22:15:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:06,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:10,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:10,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510695624] [2024-06-03 22:15:10,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510695624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:10,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:10,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 22:15:10,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153333130] [2024-06-03 22:15:10,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:10,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 22:15:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 22:15:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 22:15:10,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:10,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 333 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) [2024-06-03 22:15:10,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:10,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:10,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:10,739 INFO L124 PetriNetUnfolderBase]: 225/404 cut-off events. [2024-06-03 22:15:10,739 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2024-06-03 22:15:10,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 404 events. 225/404 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1440 event pairs, 50 based on Foata normal form. 3/407 useless extension candidates. Maximal degree in co-relation 1674. Up to 302 conditions per place. [2024-06-03 22:15:10,742 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 45 selfloop transitions, 26 changer transitions 0/73 dead transitions. [2024-06-03 22:15:10,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 589 flow [2024-06-03 22:15:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 22:15:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 22:15:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-03 22:15:10,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-03 22:15:10,744 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 333 flow. Second operand 7 states and 88 transitions. [2024-06-03 22:15:10,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 589 flow [2024-06-03 22:15:10,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 568 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 22:15:10,751 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 436 flow [2024-06-03 22:15:10,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-03 22:15:10,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-03 22:15:10,752 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 436 flow [2024-06-03 22:15:10,753 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) [2024-06-03 22:15:10,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:10,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:10,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 22:15:10,753 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)] === [2024-06-03 22:15:10,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash 152396018, now seen corresponding path program 2 times [2024-06-03 22:15:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:10,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366221369] [2024-06-03 22:15:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:10,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:14,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:14,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366221369] [2024-06-03 22:15:14,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366221369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:14,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:14,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 22:15:14,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086015239] [2024-06-03 22:15:14,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:14,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 22:15:14,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:14,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 22:15:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 22:15:14,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:14,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 436 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) [2024-06-03 22:15:14,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:14,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:14,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:14,958 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-03 22:15:14,959 INFO L125 PetriNetUnfolderBase]: For 2751/2751 co-relation queries the response was YES. [2024-06-03 22:15:14,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 409 events. 228/409 cut-off events. For 2751/2751 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1467 event pairs, 49 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 1853. Up to 391 conditions per place. [2024-06-03 22:15:14,962 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 58 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-03 22:15:14,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 606 flow [2024-06-03 22:15:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 22:15:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 22:15:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-03 22:15:14,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-03 22:15:14,965 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 436 flow. Second operand 7 states and 72 transitions. [2024-06-03 22:15:14,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 606 flow [2024-06-03 22:15:14,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 591 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-03 22:15:14,970 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 468 flow [2024-06-03 22:15:14,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-06-03 22:15:14,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-03 22:15:14,971 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 468 flow [2024-06-03 22:15:14,971 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) [2024-06-03 22:15:14,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:14,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:14,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 22:15:14,972 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)] === [2024-06-03 22:15:14,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:14,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1733943554, now seen corresponding path program 3 times [2024-06-03 22:15:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090748809] [2024-06-03 22:15:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:14,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:18,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:18,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090748809] [2024-06-03 22:15:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090748809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:18,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:18,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 22:15:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826711991] [2024-06-03 22:15:18,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:18,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 22:15:18,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 22:15:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 22:15:18,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:18,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 468 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) [2024-06-03 22:15:18,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:18,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:18,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:19,244 INFO L124 PetriNetUnfolderBase]: 226/406 cut-off events. [2024-06-03 22:15:19,244 INFO L125 PetriNetUnfolderBase]: For 3140/3140 co-relation queries the response was YES. [2024-06-03 22:15:19,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 406 events. 226/406 cut-off events. For 3140/3140 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1460 event pairs, 49 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1883. Up to 382 conditions per place. [2024-06-03 22:15:19,248 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 55 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-03 22:15:19,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 620 flow [2024-06-03 22:15:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 22:15:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 22:15:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-03 22:15:19,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33035714285714285 [2024-06-03 22:15:19,249 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 468 flow. Second operand 7 states and 74 transitions. [2024-06-03 22:15:19,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 620 flow [2024-06-03 22:15:19,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 597 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 22:15:19,255 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 476 flow [2024-06-03 22:15:19,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=476, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-06-03 22:15:19,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-03 22:15:19,256 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 476 flow [2024-06-03 22:15:19,256 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) [2024-06-03 22:15:19,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:19,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:19,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 22:15:19,257 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)] === [2024-06-03 22:15:19,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:19,257 INFO L85 PathProgramCache]: Analyzing trace with hash -841244666, now seen corresponding path program 1 times [2024-06-03 22:15:19,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:19,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215364162] [2024-06-03 22:15:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:19,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:24,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:24,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215364162] [2024-06-03 22:15:24,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215364162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:24,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:24,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:15:24,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254123174] [2024-06-03 22:15:24,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:24,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:15:24,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:15:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:15:24,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:24,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 476 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) [2024-06-03 22:15:24,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:24,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:24,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:24,529 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-03 22:15:24,529 INFO L125 PetriNetUnfolderBase]: For 3537/3537 co-relation queries the response was YES. [2024-06-03 22:15:24,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 400 events. 222/400 cut-off events. For 3537/3537 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1422 event pairs, 47 based on Foata normal form. 2/402 useless extension candidates. Maximal degree in co-relation 1882. Up to 376 conditions per place. [2024-06-03 22:15:24,533 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-06-03 22:15:24,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 650 flow [2024-06-03 22:15:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:15:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:15:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-03 22:15:24,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-03 22:15:24,534 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 476 flow. Second operand 8 states and 81 transitions. [2024-06-03 22:15:24,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 650 flow [2024-06-03 22:15:24,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 608 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 22:15:24,540 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 477 flow [2024-06-03 22:15:24,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-06-03 22:15:24,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-03 22:15:24,541 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 477 flow [2024-06-03 22:15:24,541 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) [2024-06-03 22:15:24,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:24,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:24,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 22:15:24,542 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)] === [2024-06-03 22:15:24,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:24,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2013188553, now seen corresponding path program 1 times [2024-06-03 22:15:24,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:24,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737710709] [2024-06-03 22:15:24,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:24,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:29,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737710709] [2024-06-03 22:15:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737710709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:29,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:29,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 22:15:29,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216701438] [2024-06-03 22:15:29,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:29,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 22:15:29,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 22:15:29,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-03 22:15:29,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:29,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 477 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) [2024-06-03 22:15:29,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:29,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:29,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:29,404 INFO L124 PetriNetUnfolderBase]: 225/405 cut-off events. [2024-06-03 22:15:29,405 INFO L125 PetriNetUnfolderBase]: For 3841/3841 co-relation queries the response was YES. [2024-06-03 22:15:29,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 405 events. 225/405 cut-off events. For 3841/3841 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1441 event pairs, 47 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1945. Up to 342 conditions per place. [2024-06-03 22:15:29,408 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2024-06-03 22:15:29,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 725 flow [2024-06-03 22:15:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 22:15:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 22:15:29,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-03 22:15:29,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-03 22:15:29,410 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 477 flow. Second operand 7 states and 83 transitions. [2024-06-03 22:15:29,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 725 flow [2024-06-03 22:15:29,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 698 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 22:15:29,417 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 517 flow [2024-06-03 22:15:29,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-06-03 22:15:29,417 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-03 22:15:29,418 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 517 flow [2024-06-03 22:15:29,418 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) [2024-06-03 22:15:29,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:29,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:29,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 22:15:29,419 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)] === [2024-06-03 22:15:29,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:29,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1613147621, now seen corresponding path program 2 times [2024-06-03 22:15:29,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:29,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934416948] [2024-06-03 22:15:29,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:29,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:33,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:33,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934416948] [2024-06-03 22:15:33,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934416948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:33,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:33,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 22:15:33,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913495518] [2024-06-03 22:15:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:33,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 22:15:33,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:33,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 22:15:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 22:15:33,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:33,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 517 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) [2024-06-03 22:15:33,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:33,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:33,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:34,128 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-03 22:15:34,129 INFO L125 PetriNetUnfolderBase]: For 4253/4253 co-relation queries the response was YES. [2024-06-03 22:15:34,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 400 events. 222/400 cut-off events. For 4253/4253 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1414 event pairs, 47 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1959. Up to 353 conditions per place. [2024-06-03 22:15:34,132 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 61 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2024-06-03 22:15:34,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 693 flow [2024-06-03 22:15:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 22:15:34,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 22:15:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 22:15:34,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-03 22:15:34,134 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 517 flow. Second operand 7 states and 79 transitions. [2024-06-03 22:15:34,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 693 flow [2024-06-03 22:15:34,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 668 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-03 22:15:34,141 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 527 flow [2024-06-03 22:15:34,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-06-03 22:15:34,142 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-03 22:15:34,142 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 527 flow [2024-06-03 22:15:34,142 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) [2024-06-03 22:15:34,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:34,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:34,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 22:15:34,143 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)] === [2024-06-03 22:15:34,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1512517786, now seen corresponding path program 1 times [2024-06-03 22:15:34,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:34,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993925041] [2024-06-03 22:15:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:34,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:37,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:37,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993925041] [2024-06-03 22:15:37,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993925041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:37,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:37,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 22:15:37,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891939057] [2024-06-03 22:15:37,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:37,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 22:15:37,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 22:15:37,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 22:15:38,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:38,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 527 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) [2024-06-03 22:15:38,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:38,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:38,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:38,323 INFO L124 PetriNetUnfolderBase]: 230/413 cut-off events. [2024-06-03 22:15:38,324 INFO L125 PetriNetUnfolderBase]: For 4911/4911 co-relation queries the response was YES. [2024-06-03 22:15:38,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 413 events. 230/413 cut-off events. For 4911/4911 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1475 event pairs, 48 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 2076. Up to 301 conditions per place. [2024-06-03 22:15:38,328 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 48 selfloop transitions, 34 changer transitions 0/84 dead transitions. [2024-06-03 22:15:38,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 84 transitions, 809 flow [2024-06-03 22:15:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 22:15:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 22:15:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-03 22:15:38,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-03 22:15:38,329 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 527 flow. Second operand 7 states and 85 transitions. [2024-06-03 22:15:38,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 84 transitions, 809 flow [2024-06-03 22:15:38,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 84 transitions, 771 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 22:15:38,336 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 591 flow [2024-06-03 22:15:38,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=591, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-06-03 22:15:38,337 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-03 22:15:38,337 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 591 flow [2024-06-03 22:15:38,337 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) [2024-06-03 22:15:38,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:38,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:38,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 22:15:38,338 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)] === [2024-06-03 22:15:38,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash -515709535, now seen corresponding path program 1 times [2024-06-03 22:15:38,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:38,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59048639] [2024-06-03 22:15:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:38,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:42,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:42,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59048639] [2024-06-03 22:15:42,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59048639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:42,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:42,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:15:42,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112459337] [2024-06-03 22:15:42,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:42,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:15:42,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:15:42,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:15:42,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:42,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 591 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) [2024-06-03 22:15:42,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:42,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:42,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:42,727 INFO L124 PetriNetUnfolderBase]: 244/436 cut-off events. [2024-06-03 22:15:42,728 INFO L125 PetriNetUnfolderBase]: For 5995/5995 co-relation queries the response was YES. [2024-06-03 22:15:42,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 436 events. 244/436 cut-off events. For 5995/5995 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1587 event pairs, 47 based on Foata normal form. 3/439 useless extension candidates. Maximal degree in co-relation 2246. Up to 271 conditions per place. [2024-06-03 22:15:42,732 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 33 changer transitions 0/95 dead transitions. [2024-06-03 22:15:42,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 929 flow [2024-06-03 22:15:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:15:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:15:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-03 22:15:42,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-03 22:15:42,734 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 591 flow. Second operand 8 states and 101 transitions. [2024-06-03 22:15:42,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 929 flow [2024-06-03 22:15:42,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 899 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 22:15:42,744 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 685 flow [2024-06-03 22:15:42,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2024-06-03 22:15:42,745 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-03 22:15:42,745 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 685 flow [2024-06-03 22:15:42,745 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) [2024-06-03 22:15:42,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:42,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:42,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 22:15:42,746 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)] === [2024-06-03 22:15:42,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:42,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2013336578, now seen corresponding path program 2 times [2024-06-03 22:15:42,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:42,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540286835] [2024-06-03 22:15:42,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:42,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:46,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:46,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:46,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540286835] [2024-06-03 22:15:46,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540286835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:46,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:46,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 22:15:46,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146229370] [2024-06-03 22:15:46,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:46,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 22:15:46,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:46,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 22:15:46,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 22:15:46,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:46,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 685 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) [2024-06-03 22:15:46,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:46,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:46,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:46,988 INFO L124 PetriNetUnfolderBase]: 240/430 cut-off events. [2024-06-03 22:15:46,988 INFO L125 PetriNetUnfolderBase]: For 6306/6306 co-relation queries the response was YES. [2024-06-03 22:15:46,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 430 events. 240/430 cut-off events. For 6306/6306 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1568 event pairs, 45 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 2320. Up to 321 conditions per place. [2024-06-03 22:15:46,991 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2024-06-03 22:15:46,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 979 flow [2024-06-03 22:15:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 22:15:46,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 22:15:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-03 22:15:46,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-03 22:15:46,993 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 685 flow. Second operand 7 states and 90 transitions. [2024-06-03 22:15:46,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 979 flow [2024-06-03 22:15:47,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 95 transitions, 947 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-03 22:15:47,003 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 729 flow [2024-06-03 22:15:47,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-06-03 22:15:47,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-03 22:15:47,004 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 729 flow [2024-06-03 22:15:47,004 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) [2024-06-03 22:15:47,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:47,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:47,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 22:15:47,005 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)] === [2024-06-03 22:15:47,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:47,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1359337130, now seen corresponding path program 3 times [2024-06-03 22:15:47,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:47,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84705854] [2024-06-03 22:15:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:47,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:50,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84705854] [2024-06-03 22:15:50,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84705854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:50,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:50,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 22:15:50,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746776812] [2024-06-03 22:15:50,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:50,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 22:15:50,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:50,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 22:15:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 22:15:50,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:50,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 729 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) [2024-06-03 22:15:50,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:50,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:50,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:50,991 INFO L124 PetriNetUnfolderBase]: 237/425 cut-off events. [2024-06-03 22:15:50,991 INFO L125 PetriNetUnfolderBase]: For 6747/6747 co-relation queries the response was YES. [2024-06-03 22:15:50,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 425 events. 237/425 cut-off events. For 6747/6747 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1537 event pairs, 44 based on Foata normal form. 1/426 useless extension candidates. Maximal degree in co-relation 2371. Up to 404 conditions per place. [2024-06-03 22:15:50,994 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 74 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-06-03 22:15:50,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 87 transitions, 915 flow [2024-06-03 22:15:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 22:15:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 22:15:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-03 22:15:50,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32589285714285715 [2024-06-03 22:15:50,995 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 729 flow. Second operand 7 states and 73 transitions. [2024-06-03 22:15:50,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 87 transitions, 915 flow [2024-06-03 22:15:51,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 834 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-03 22:15:51,002 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 675 flow [2024-06-03 22:15:51,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=675, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-06-03 22:15:51,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-03 22:15:51,003 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 675 flow [2024-06-03 22:15:51,004 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) [2024-06-03 22:15:51,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:51,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:51,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 22:15:51,004 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)] === [2024-06-03 22:15:51,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1359337347, now seen corresponding path program 2 times [2024-06-03 22:15:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:51,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521977160] [2024-06-03 22:15:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:51,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:54,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521977160] [2024-06-03 22:15:54,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521977160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:54,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:54,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:15:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070730357] [2024-06-03 22:15:54,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:54,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:15:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:15:54,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:15:55,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:55,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 675 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) [2024-06-03 22:15:55,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:55,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:55,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:55,391 INFO L124 PetriNetUnfolderBase]: 240/430 cut-off events. [2024-06-03 22:15:55,391 INFO L125 PetriNetUnfolderBase]: For 7272/7272 co-relation queries the response was YES. [2024-06-03 22:15:55,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 430 events. 240/430 cut-off events. For 7272/7272 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1559 event pairs, 43 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 2364. Up to 406 conditions per place. [2024-06-03 22:15:55,396 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-03 22:15:55,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 90 transitions, 883 flow [2024-06-03 22:15:55,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:15:55,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:15:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-03 22:15:55,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-03 22:15:55,397 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 675 flow. Second operand 8 states and 81 transitions. [2024-06-03 22:15:55,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 90 transitions, 883 flow [2024-06-03 22:15:55,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 823 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 22:15:55,408 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 666 flow [2024-06-03 22:15:55,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-06-03 22:15:55,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-03 22:15:55,409 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 666 flow [2024-06-03 22:15:55,409 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) [2024-06-03 22:15:55,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:55,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:55,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 22:15:55,410 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)] === [2024-06-03 22:15:55,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2074704571, now seen corresponding path program 3 times [2024-06-03 22:15:55,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:55,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456310221] [2024-06-03 22:15:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:55,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:15:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:15:59,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:15:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456310221] [2024-06-03 22:15:59,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456310221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:15:59,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:15:59,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:15:59,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074091638] [2024-06-03 22:15:59,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:15:59,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:15:59,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:15:59,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:15:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:15:59,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:15:59,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 666 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) [2024-06-03 22:15:59,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:15:59,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:15:59,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:15:59,461 INFO L124 PetriNetUnfolderBase]: 243/435 cut-off events. [2024-06-03 22:15:59,461 INFO L125 PetriNetUnfolderBase]: For 7941/7941 co-relation queries the response was YES. [2024-06-03 22:15:59,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2467 conditions, 435 events. 243/435 cut-off events. For 7941/7941 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1583 event pairs, 43 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 2421. Up to 414 conditions per place. [2024-06-03 22:15:59,466 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 78 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2024-06-03 22:15:59,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 882 flow [2024-06-03 22:15:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:15:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:15:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-03 22:15:59,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 22:15:59,468 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 666 flow. Second operand 8 states and 80 transitions. [2024-06-03 22:15:59,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 882 flow [2024-06-03 22:15:59,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 849 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 22:15:59,480 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 684 flow [2024-06-03 22:15:59,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2024-06-03 22:15:59,480 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-03 22:15:59,481 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 684 flow [2024-06-03 22:15:59,481 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) [2024-06-03 22:15:59,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:15:59,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:15:59,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 22:15:59,482 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)] === [2024-06-03 22:15:59,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:15:59,483 INFO L85 PathProgramCache]: Analyzing trace with hash -316407745, now seen corresponding path program 4 times [2024-06-03 22:15:59,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:15:59,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851008572] [2024-06-03 22:15:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:15:59,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:15:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:03,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:03,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851008572] [2024-06-03 22:16:03,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851008572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:03,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:03,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:16:03,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058264685] [2024-06-03 22:16:03,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:03,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:16:03,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:03,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:16:03,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:16:03,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:03,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 684 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) [2024-06-03 22:16:03,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:03,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:03,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:03,610 INFO L124 PetriNetUnfolderBase]: 241/432 cut-off events. [2024-06-03 22:16:03,611 INFO L125 PetriNetUnfolderBase]: For 8492/8492 co-relation queries the response was YES. [2024-06-03 22:16:03,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 432 events. 241/432 cut-off events. For 8492/8492 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1577 event pairs, 43 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2435. Up to 396 conditions per place. [2024-06-03 22:16:03,614 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-03 22:16:03,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 908 flow [2024-06-03 22:16:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:16:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:16:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-03 22:16:03,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 22:16:03,616 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 684 flow. Second operand 8 states and 84 transitions. [2024-06-03 22:16:03,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 908 flow [2024-06-03 22:16:03,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 875 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 22:16:03,628 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 720 flow [2024-06-03 22:16:03,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=720, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-06-03 22:16:03,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-03 22:16:03,629 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 720 flow [2024-06-03 22:16:03,629 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) [2024-06-03 22:16:03,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:03,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:03,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 22:16:03,630 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)] === [2024-06-03 22:16:03,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:03,630 INFO L85 PathProgramCache]: Analyzing trace with hash 238264363, now seen corresponding path program 1 times [2024-06-03 22:16:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:03,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639116398] [2024-06-03 22:16:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:03,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:07,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:07,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639116398] [2024-06-03 22:16:07,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639116398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:07,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:07,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:16:07,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535593648] [2024-06-03 22:16:07,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:07,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:16:07,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:16:07,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:16:07,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:07,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 720 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) [2024-06-03 22:16:07,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:07,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:07,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:08,361 INFO L124 PetriNetUnfolderBase]: 252/453 cut-off events. [2024-06-03 22:16:08,361 INFO L125 PetriNetUnfolderBase]: For 10168/10168 co-relation queries the response was YES. [2024-06-03 22:16:08,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2657 conditions, 453 events. 252/453 cut-off events. For 10168/10168 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1700 event pairs, 24 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2609. Up to 299 conditions per place. [2024-06-03 22:16:08,365 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 33 changer transitions 0/106 dead transitions. [2024-06-03 22:16:08,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 1078 flow [2024-06-03 22:16:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:16:08,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:16:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-03 22:16:08,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-03 22:16:08,366 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 720 flow. Second operand 8 states and 95 transitions. [2024-06-03 22:16:08,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 1078 flow [2024-06-03 22:16:08,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 1027 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 22:16:08,377 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 766 flow [2024-06-03 22:16:08,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=766, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2024-06-03 22:16:08,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-03 22:16:08,378 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 766 flow [2024-06-03 22:16:08,378 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) [2024-06-03 22:16:08,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:08,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:08,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 22:16:08,379 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)] === [2024-06-03 22:16:08,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:08,379 INFO L85 PathProgramCache]: Analyzing trace with hash -323483627, now seen corresponding path program 2 times [2024-06-03 22:16:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:08,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832353533] [2024-06-03 22:16:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:08,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:12,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832353533] [2024-06-03 22:16:12,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832353533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:12,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:12,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:16:12,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110875095] [2024-06-03 22:16:12,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:12,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:16:12,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:16:12,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:16:12,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:12,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 766 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) [2024-06-03 22:16:12,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:12,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:12,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:12,998 INFO L124 PetriNetUnfolderBase]: 256/461 cut-off events. [2024-06-03 22:16:12,999 INFO L125 PetriNetUnfolderBase]: For 11137/11137 co-relation queries the response was YES. [2024-06-03 22:16:13,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 461 events. 256/461 cut-off events. For 11137/11137 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1755 event pairs, 43 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 2755. Up to 356 conditions per place. [2024-06-03 22:16:13,003 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 30 changer transitions 0/105 dead transitions. [2024-06-03 22:16:13,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 105 transitions, 1071 flow [2024-06-03 22:16:13,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:16:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:16:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 22:16:13,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 22:16:13,014 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 766 flow. Second operand 8 states and 94 transitions. [2024-06-03 22:16:13,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 105 transitions, 1071 flow [2024-06-03 22:16:13,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 999 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-03 22:16:13,029 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 773 flow [2024-06-03 22:16:13,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=773, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-06-03 22:16:13,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-03 22:16:13,030 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 773 flow [2024-06-03 22:16:13,030 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) [2024-06-03 22:16:13,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:13,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:13,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 22:16:13,031 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)] === [2024-06-03 22:16:13,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:13,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1532025139, now seen corresponding path program 1 times [2024-06-03 22:16:13,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:13,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162710344] [2024-06-03 22:16:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:13,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:17,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:17,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162710344] [2024-06-03 22:16:17,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162710344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:17,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:17,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:16:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630085807] [2024-06-03 22:16:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:17,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:16:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:16:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:16:17,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:17,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 773 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) [2024-06-03 22:16:17,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:17,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:17,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:18,018 INFO L124 PetriNetUnfolderBase]: 254/458 cut-off events. [2024-06-03 22:16:18,018 INFO L125 PetriNetUnfolderBase]: For 11386/11386 co-relation queries the response was YES. [2024-06-03 22:16:18,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 458 events. 254/458 cut-off events. For 11386/11386 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1734 event pairs, 44 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 2706. Up to 352 conditions per place. [2024-06-03 22:16:18,023 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 32 changer transitions 0/100 dead transitions. [2024-06-03 22:16:18,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 995 flow [2024-06-03 22:16:18,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:16:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:16:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-03 22:16:18,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-03 22:16:18,025 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 773 flow. Second operand 8 states and 93 transitions. [2024-06-03 22:16:18,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 995 flow [2024-06-03 22:16:18,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 100 transitions, 921 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 22:16:18,042 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 768 flow [2024-06-03 22:16:18,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=768, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-06-03 22:16:18,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-03 22:16:18,043 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 768 flow [2024-06-03 22:16:18,043 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) [2024-06-03 22:16:18,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:18,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:18,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 22:16:18,044 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)] === [2024-06-03 22:16:18,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1532029913, now seen corresponding path program 3 times [2024-06-03 22:16:18,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:18,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109002950] [2024-06-03 22:16:18,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:18,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:22,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:22,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109002950] [2024-06-03 22:16:22,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109002950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:22,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:22,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:16:22,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426687806] [2024-06-03 22:16:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:16:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:16:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:16:22,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:22,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 768 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) [2024-06-03 22:16:22,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:22,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:22,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:22,840 INFO L124 PetriNetUnfolderBase]: 251/453 cut-off events. [2024-06-03 22:16:22,840 INFO L125 PetriNetUnfolderBase]: For 11875/11875 co-relation queries the response was YES. [2024-06-03 22:16:22,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2680 conditions, 453 events. 251/453 cut-off events. For 11875/11875 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1706 event pairs, 42 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2630. Up to 400 conditions per place. [2024-06-03 22:16:22,843 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 83 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-03 22:16:22,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 101 transitions, 994 flow [2024-06-03 22:16:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:16:22,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:16:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-03 22:16:22,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-03 22:16:22,844 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 768 flow. Second operand 8 states and 87 transitions. [2024-06-03 22:16:22,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 101 transitions, 994 flow [2024-06-03 22:16:22,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 891 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 22:16:22,857 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 701 flow [2024-06-03 22:16:22,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=701, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-06-03 22:16:22,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-03 22:16:22,858 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 701 flow [2024-06-03 22:16:22,858 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) [2024-06-03 22:16:22,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:22,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:22,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 22:16:22,859 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)] === [2024-06-03 22:16:22,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1416733783, now seen corresponding path program 1 times [2024-06-03 22:16:22,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:22,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655558329] [2024-06-03 22:16:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:22,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:26,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:26,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655558329] [2024-06-03 22:16:26,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655558329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:26,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:26,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:16:26,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615952805] [2024-06-03 22:16:26,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:26,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:16:26,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:26,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:16:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:16:26,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:26,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 701 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) [2024-06-03 22:16:26,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:26,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:26,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:27,178 INFO L124 PetriNetUnfolderBase]: 257/463 cut-off events. [2024-06-03 22:16:27,179 INFO L125 PetriNetUnfolderBase]: For 12724/12724 co-relation queries the response was YES. [2024-06-03 22:16:27,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 463 events. 257/463 cut-off events. For 12724/12724 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1757 event pairs, 45 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2629. Up to 301 conditions per place. [2024-06-03 22:16:27,183 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 43 changer transitions 0/109 dead transitions. [2024-06-03 22:16:27,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 109 transitions, 1093 flow [2024-06-03 22:16:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:16:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:16:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-03 22:16:27,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-03 22:16:27,185 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 701 flow. Second operand 8 states and 102 transitions. [2024-06-03 22:16:27,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 109 transitions, 1093 flow [2024-06-03 22:16:27,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 1057 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 22:16:27,204 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 786 flow [2024-06-03 22:16:27,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=786, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2024-06-03 22:16:27,210 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-03 22:16:27,210 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 786 flow [2024-06-03 22:16:27,210 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) [2024-06-03 22:16:27,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:27,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:27,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 22:16:27,211 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)] === [2024-06-03 22:16:27,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:27,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1416554045, now seen corresponding path program 1 times [2024-06-03 22:16:27,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:27,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224901630] [2024-06-03 22:16:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:27,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:32,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:32,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224901630] [2024-06-03 22:16:32,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224901630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:32,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:32,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:16:32,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870009249] [2024-06-03 22:16:32,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:32,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:16:32,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:32,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:16:32,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:16:32,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:32,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 786 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) [2024-06-03 22:16:32,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:32,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:32,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:32,475 INFO L124 PetriNetUnfolderBase]: 285/509 cut-off events. [2024-06-03 22:16:32,475 INFO L125 PetriNetUnfolderBase]: For 15729/15729 co-relation queries the response was YES. [2024-06-03 22:16:32,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3013 conditions, 509 events. 285/509 cut-off events. For 15729/15729 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1977 event pairs, 43 based on Foata normal form. 6/515 useless extension candidates. Maximal degree in co-relation 2962. Up to 252 conditions per place. [2024-06-03 22:16:32,480 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 77 selfloop transitions, 41 changer transitions 0/120 dead transitions. [2024-06-03 22:16:32,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 120 transitions, 1254 flow [2024-06-03 22:16:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:16:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:16:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-03 22:16:32,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-03 22:16:32,485 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 786 flow. Second operand 9 states and 118 transitions. [2024-06-03 22:16:32,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 120 transitions, 1254 flow [2024-06-03 22:16:32,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 1157 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 22:16:32,510 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 844 flow [2024-06-03 22:16:32,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=844, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2024-06-03 22:16:32,511 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-03 22:16:32,511 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 844 flow [2024-06-03 22:16:32,511 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) [2024-06-03 22:16:32,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:32,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:32,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 22:16:32,512 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)] === [2024-06-03 22:16:32,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:32,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1416554293, now seen corresponding path program 2 times [2024-06-03 22:16:32,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:32,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820005136] [2024-06-03 22:16:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:32,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:36,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:36,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820005136] [2024-06-03 22:16:36,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820005136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:36,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:36,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:16:36,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020317757] [2024-06-03 22:16:36,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:36,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:16:36,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:36,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:16:36,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:16:36,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:36,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 844 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) [2024-06-03 22:16:36,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:36,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:36,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:37,047 INFO L124 PetriNetUnfolderBase]: 293/522 cut-off events. [2024-06-03 22:16:37,047 INFO L125 PetriNetUnfolderBase]: For 15460/15460 co-relation queries the response was YES. [2024-06-03 22:16:37,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 522 events. 293/522 cut-off events. For 15460/15460 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2046 event pairs, 44 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 3160. Up to 352 conditions per place. [2024-06-03 22:16:37,051 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 68 selfloop transitions, 48 changer transitions 0/118 dead transitions. [2024-06-03 22:16:37,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 118 transitions, 1276 flow [2024-06-03 22:16:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:16:37,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:16:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 22:16:37,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 22:16:37,053 INFO L175 Difference]: Start difference. First operand has 106 places, 100 transitions, 844 flow. Second operand 8 states and 97 transitions. [2024-06-03 22:16:37,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 118 transitions, 1276 flow [2024-06-03 22:16:37,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 118 transitions, 1227 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-03 22:16:37,072 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 962 flow [2024-06-03 22:16:37,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=962, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2024-06-03 22:16:37,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-03 22:16:37,072 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 962 flow [2024-06-03 22:16:37,073 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) [2024-06-03 22:16:37,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:37,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:37,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 22:16:37,073 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)] === [2024-06-03 22:16:37,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:37,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1416560803, now seen corresponding path program 3 times [2024-06-03 22:16:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:37,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431384960] [2024-06-03 22:16:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:37,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:40,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:40,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431384960] [2024-06-03 22:16:40,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431384960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:40,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:40,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:16:40,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798071953] [2024-06-03 22:16:40,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:40,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:16:40,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:16:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:16:41,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:41,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 104 transitions, 962 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) [2024-06-03 22:16:41,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:41,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:41,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:41,300 INFO L124 PetriNetUnfolderBase]: 291/519 cut-off events. [2024-06-03 22:16:41,300 INFO L125 PetriNetUnfolderBase]: For 16338/16338 co-relation queries the response was YES. [2024-06-03 22:16:41,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3315 conditions, 519 events. 291/519 cut-off events. For 16338/16338 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2031 event pairs, 44 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 3260. Up to 351 conditions per place. [2024-06-03 22:16:41,304 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 45 changer transitions 0/117 dead transitions. [2024-06-03 22:16:41,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 117 transitions, 1294 flow [2024-06-03 22:16:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:16:41,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:16:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-03 22:16:41,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 22:16:41,310 INFO L175 Difference]: Start difference. First operand has 111 places, 104 transitions, 962 flow. Second operand 8 states and 96 transitions. [2024-06-03 22:16:41,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 117 transitions, 1294 flow [2024-06-03 22:16:41,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 117 transitions, 1221 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-03 22:16:41,327 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 984 flow [2024-06-03 22:16:41,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=984, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-03 22:16:41,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-03 22:16:41,328 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 984 flow [2024-06-03 22:16:41,328 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) [2024-06-03 22:16:41,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:41,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:41,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 22:16:41,328 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)] === [2024-06-03 22:16:41,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:41,329 INFO L85 PathProgramCache]: Analyzing trace with hash 423965033, now seen corresponding path program 4 times [2024-06-03 22:16:41,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:41,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074192017] [2024-06-03 22:16:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:41,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:45,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:45,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074192017] [2024-06-03 22:16:45,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074192017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:45,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:45,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:16:45,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76349522] [2024-06-03 22:16:45,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:45,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:16:45,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:45,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:16:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:16:45,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:45,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 984 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) [2024-06-03 22:16:45,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:45,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:45,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:45,674 INFO L124 PetriNetUnfolderBase]: 294/524 cut-off events. [2024-06-03 22:16:45,674 INFO L125 PetriNetUnfolderBase]: For 17508/17508 co-relation queries the response was YES. [2024-06-03 22:16:45,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 524 events. 294/524 cut-off events. For 17508/17508 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2055 event pairs, 44 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 3340. Up to 500 conditions per place. [2024-06-03 22:16:45,677 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 99 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2024-06-03 22:16:45,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 114 transitions, 1255 flow [2024-06-03 22:16:45,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:16:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:16:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-03 22:16:45,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-03 22:16:45,679 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 984 flow. Second operand 8 states and 81 transitions. [2024-06-03 22:16:45,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 114 transitions, 1255 flow [2024-06-03 22:16:45,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 1143 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 22:16:45,703 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 936 flow [2024-06-03 22:16:45,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=936, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2024-06-03 22:16:45,704 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-03 22:16:45,704 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 936 flow [2024-06-03 22:16:45,704 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) [2024-06-03 22:16:45,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:45,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:45,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 22:16:45,705 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)] === [2024-06-03 22:16:45,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:45,705 INFO L85 PathProgramCache]: Analyzing trace with hash -801642749, now seen corresponding path program 2 times [2024-06-03 22:16:45,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:45,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521281741] [2024-06-03 22:16:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:45,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:50,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:50,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521281741] [2024-06-03 22:16:50,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521281741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:50,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:50,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:16:50,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014006002] [2024-06-03 22:16:50,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:50,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:16:50,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:50,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:16:50,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:16:50,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:50,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 936 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) [2024-06-03 22:16:50,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:50,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:50,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:50,543 INFO L124 PetriNetUnfolderBase]: 300/534 cut-off events. [2024-06-03 22:16:50,544 INFO L125 PetriNetUnfolderBase]: For 19059/19059 co-relation queries the response was YES. [2024-06-03 22:16:50,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3403 conditions, 534 events. 300/534 cut-off events. For 19059/19059 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2097 event pairs, 41 based on Foata normal form. 2/536 useless extension candidates. Maximal degree in co-relation 3346. Up to 502 conditions per place. [2024-06-03 22:16:50,547 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2024-06-03 22:16:50,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 1216 flow [2024-06-03 22:16:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:16:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:16:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-03 22:16:50,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 22:16:50,548 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 936 flow. Second operand 9 states and 90 transitions. [2024-06-03 22:16:50,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 1216 flow [2024-06-03 22:16:50,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 119 transitions, 1173 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-03 22:16:50,569 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 952 flow [2024-06-03 22:16:50,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=119, PETRI_TRANSITIONS=108} [2024-06-03 22:16:50,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-03 22:16:50,570 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 952 flow [2024-06-03 22:16:50,570 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) [2024-06-03 22:16:50,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:50,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:50,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 22:16:50,570 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)] === [2024-06-03 22:16:50,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:50,571 INFO L85 PathProgramCache]: Analyzing trace with hash -982528569, now seen corresponding path program 3 times [2024-06-03 22:16:50,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:50,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427362791] [2024-06-03 22:16:50,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:50,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:54,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:54,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427362791] [2024-06-03 22:16:54,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427362791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:54,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:54,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:16:54,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145707069] [2024-06-03 22:16:54,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:16:54,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:54,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:16:54,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:16:55,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:16:55,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 952 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) [2024-06-03 22:16:55,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:16:55,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:16:55,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:16:55,502 INFO L124 PetriNetUnfolderBase]: 306/544 cut-off events. [2024-06-03 22:16:55,503 INFO L125 PetriNetUnfolderBase]: For 20396/20396 co-relation queries the response was YES. [2024-06-03 22:16:55,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3510 conditions, 544 events. 306/544 cut-off events. For 20396/20396 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2155 event pairs, 41 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3452. Up to 503 conditions per place. [2024-06-03 22:16:55,508 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2024-06-03 22:16:55,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 122 transitions, 1244 flow [2024-06-03 22:16:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:16:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:16:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-03 22:16:55,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-03 22:16:55,509 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 952 flow. Second operand 9 states and 93 transitions. [2024-06-03 22:16:55,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 122 transitions, 1244 flow [2024-06-03 22:16:55,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 122 transitions, 1203 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 22:16:55,532 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 980 flow [2024-06-03 22:16:55,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=980, PETRI_PLACES=121, PETRI_TRANSITIONS=110} [2024-06-03 22:16:55,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-03 22:16:55,533 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 980 flow [2024-06-03 22:16:55,533 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) [2024-06-03 22:16:55,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:16:55,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:16:55,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 22:16:55,533 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)] === [2024-06-03 22:16:55,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:16:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash 528492435, now seen corresponding path program 4 times [2024-06-03 22:16:55,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:16:55,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165321037] [2024-06-03 22:16:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:16:55,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:16:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:16:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:16:59,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:16:59,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165321037] [2024-06-03 22:16:59,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165321037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:16:59,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:16:59,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:16:59,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099488207] [2024-06-03 22:16:59,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:16:59,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:16:59,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:16:59,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:16:59,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:17:00,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:00,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 110 transitions, 980 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) [2024-06-03 22:17:00,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:00,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:00,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:00,512 INFO L124 PetriNetUnfolderBase]: 312/554 cut-off events. [2024-06-03 22:17:00,512 INFO L125 PetriNetUnfolderBase]: For 21772/21772 co-relation queries the response was YES. [2024-06-03 22:17:00,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 554 events. 312/554 cut-off events. For 21772/21772 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2199 event pairs, 41 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3558. Up to 518 conditions per place. [2024-06-03 22:17:00,515 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2024-06-03 22:17:00,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 123 transitions, 1276 flow [2024-06-03 22:17:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:17:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:17:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 22:17:00,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-03 22:17:00,517 INFO L175 Difference]: Start difference. First operand has 121 places, 110 transitions, 980 flow. Second operand 9 states and 92 transitions. [2024-06-03 22:17:00,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 123 transitions, 1276 flow [2024-06-03 22:17:00,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 123 transitions, 1225 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-03 22:17:00,539 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 1002 flow [2024-06-03 22:17:00,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1002, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-06-03 22:17:00,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-03 22:17:00,540 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 1002 flow [2024-06-03 22:17:00,540 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) [2024-06-03 22:17:00,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:00,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:00,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 22:17:00,541 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)] === [2024-06-03 22:17:00,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:00,541 INFO L85 PathProgramCache]: Analyzing trace with hash -990803027, now seen corresponding path program 5 times [2024-06-03 22:17:00,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:00,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145810444] [2024-06-03 22:17:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:04,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:04,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145810444] [2024-06-03 22:17:04,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145810444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:04,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:04,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:17:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751085016] [2024-06-03 22:17:04,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:04,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:17:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:04,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:17:04,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:17:04,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:04,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 1002 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) [2024-06-03 22:17:04,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:04,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:04,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:04,830 INFO L124 PetriNetUnfolderBase]: 315/559 cut-off events. [2024-06-03 22:17:04,830 INFO L125 PetriNetUnfolderBase]: For 22424/22424 co-relation queries the response was YES. [2024-06-03 22:17:04,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 559 events. 315/559 cut-off events. For 22424/22424 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2241 event pairs, 45 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 3618. Up to 525 conditions per place. [2024-06-03 22:17:04,834 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 105 selfloop transitions, 18 changer transitions 0/125 dead transitions. [2024-06-03 22:17:04,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 125 transitions, 1400 flow [2024-06-03 22:17:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:17:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:17:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-03 22:17:04,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33203125 [2024-06-03 22:17:04,836 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 1002 flow. Second operand 8 states and 85 transitions. [2024-06-03 22:17:04,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 125 transitions, 1400 flow [2024-06-03 22:17:04,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 125 transitions, 1345 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 22:17:04,871 INFO L231 Difference]: Finished difference. Result has 124 places, 116 transitions, 1054 flow [2024-06-03 22:17:04,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1054, PETRI_PLACES=124, PETRI_TRANSITIONS=116} [2024-06-03 22:17:04,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-03 22:17:04,871 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 116 transitions, 1054 flow [2024-06-03 22:17:04,872 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) [2024-06-03 22:17:04,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:04,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:04,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 22:17:04,872 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)] === [2024-06-03 22:17:04,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:04,873 INFO L85 PathProgramCache]: Analyzing trace with hash -810220387, now seen corresponding path program 6 times [2024-06-03 22:17:04,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:04,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109245772] [2024-06-03 22:17:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:04,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:08,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:08,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109245772] [2024-06-03 22:17:08,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109245772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:08,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:08,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:17:08,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532141635] [2024-06-03 22:17:08,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:08,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:17:08,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:17:08,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:17:08,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:08,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 116 transitions, 1054 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) [2024-06-03 22:17:08,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:08,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:08,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:09,219 INFO L124 PetriNetUnfolderBase]: 313/556 cut-off events. [2024-06-03 22:17:09,219 INFO L125 PetriNetUnfolderBase]: For 22871/22871 co-relation queries the response was YES. [2024-06-03 22:17:09,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3634 conditions, 556 events. 313/556 cut-off events. For 22871/22871 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2229 event pairs, 45 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 3573. Up to 523 conditions per place. [2024-06-03 22:17:09,222 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 104 selfloop transitions, 18 changer transitions 0/124 dead transitions. [2024-06-03 22:17:09,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 124 transitions, 1316 flow [2024-06-03 22:17:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:17:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:17:09,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-03 22:17:09,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 22:17:09,223 INFO L175 Difference]: Start difference. First operand has 124 places, 116 transitions, 1054 flow. Second operand 8 states and 84 transitions. [2024-06-03 22:17:09,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 124 transitions, 1316 flow [2024-06-03 22:17:09,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 124 transitions, 1254 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-03 22:17:09,247 INFO L231 Difference]: Finished difference. Result has 128 places, 116 transitions, 1033 flow [2024-06-03 22:17:09,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1033, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2024-06-03 22:17:09,248 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-03 22:17:09,248 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 1033 flow [2024-06-03 22:17:09,248 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) [2024-06-03 22:17:09,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:09,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:09,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 22:17:09,249 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)] === [2024-06-03 22:17:09,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1038114779, now seen corresponding path program 5 times [2024-06-03 22:17:09,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:09,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495744181] [2024-06-03 22:17:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:09,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:14,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495744181] [2024-06-03 22:17:14,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495744181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:17:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081105373] [2024-06-03 22:17:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:14,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:17:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:14,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:17:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:17:14,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:14,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 1033 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) [2024-06-03 22:17:14,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:14,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:14,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:14,919 INFO L124 PetriNetUnfolderBase]: 309/550 cut-off events. [2024-06-03 22:17:14,920 INFO L125 PetriNetUnfolderBase]: For 23249/23249 co-relation queries the response was YES. [2024-06-03 22:17:14,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 550 events. 309/550 cut-off events. For 23249/23249 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2188 event pairs, 40 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 3481. Up to 482 conditions per place. [2024-06-03 22:17:14,924 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 102 selfloop transitions, 26 changer transitions 0/130 dead transitions. [2024-06-03 22:17:14,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 1349 flow [2024-06-03 22:17:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:17:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:17:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 22:17:14,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 22:17:14,937 INFO L175 Difference]: Start difference. First operand has 128 places, 116 transitions, 1033 flow. Second operand 9 states and 97 transitions. [2024-06-03 22:17:14,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 1349 flow [2024-06-03 22:17:14,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1308 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 22:17:14,980 INFO L231 Difference]: Finished difference. Result has 130 places, 118 transitions, 1087 flow [2024-06-03 22:17:14,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1087, PETRI_PLACES=130, PETRI_TRANSITIONS=118} [2024-06-03 22:17:14,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-03 22:17:14,981 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 118 transitions, 1087 flow [2024-06-03 22:17:14,981 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) [2024-06-03 22:17:14,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:14,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:14,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 22:17:14,982 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)] === [2024-06-03 22:17:14,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash -982220987, now seen corresponding path program 1 times [2024-06-03 22:17:14,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:14,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400199062] [2024-06-03 22:17:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:14,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:20,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:20,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400199062] [2024-06-03 22:17:20,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400199062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:20,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:20,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:17:20,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7601991] [2024-06-03 22:17:20,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:20,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:17:20,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:20,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:17:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:17:20,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:20,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 118 transitions, 1087 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) [2024-06-03 22:17:20,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:20,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:20,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:21,346 INFO L124 PetriNetUnfolderBase]: 306/545 cut-off events. [2024-06-03 22:17:21,346 INFO L125 PetriNetUnfolderBase]: For 23226/23226 co-relation queries the response was YES. [2024-06-03 22:17:21,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 545 events. 306/545 cut-off events. For 23226/23226 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2160 event pairs, 39 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3457. Up to 515 conditions per place. [2024-06-03 22:17:21,350 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 114 selfloop transitions, 13 changer transitions 0/129 dead transitions. [2024-06-03 22:17:21,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 129 transitions, 1365 flow [2024-06-03 22:17:21,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:17:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:17:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-03 22:17:21,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-03 22:17:21,351 INFO L175 Difference]: Start difference. First operand has 130 places, 118 transitions, 1087 flow. Second operand 9 states and 88 transitions. [2024-06-03 22:17:21,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 129 transitions, 1365 flow [2024-06-03 22:17:21,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 129 transitions, 1288 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-03 22:17:21,383 INFO L231 Difference]: Finished difference. Result has 132 places, 118 transitions, 1040 flow [2024-06-03 22:17:21,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1040, PETRI_PLACES=132, PETRI_TRANSITIONS=118} [2024-06-03 22:17:21,383 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-03 22:17:21,383 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 118 transitions, 1040 flow [2024-06-03 22:17:21,383 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) [2024-06-03 22:17:21,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:21,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:21,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 22:17:21,384 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)] === [2024-06-03 22:17:21,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:21,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1823488987, now seen corresponding path program 1 times [2024-06-03 22:17:21,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:21,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344565128] [2024-06-03 22:17:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:21,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:25,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:25,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344565128] [2024-06-03 22:17:25,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344565128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:25,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:25,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:17:25,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221350349] [2024-06-03 22:17:25,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:25,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:17:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:25,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:17:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:17:25,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:25,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 118 transitions, 1040 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:17:25,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:25,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:25,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:26,069 INFO L124 PetriNetUnfolderBase]: 310/553 cut-off events. [2024-06-03 22:17:26,069 INFO L125 PetriNetUnfolderBase]: For 23986/23986 co-relation queries the response was YES. [2024-06-03 22:17:26,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 553 events. 310/553 cut-off events. For 23986/23986 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2219 event pairs, 24 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 3439. Up to 361 conditions per place. [2024-06-03 22:17:26,073 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 104 selfloop transitions, 28 changer transitions 0/134 dead transitions. [2024-06-03 22:17:26,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 134 transitions, 1424 flow [2024-06-03 22:17:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:17:26,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:17:26,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 22:17:26,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-03 22:17:26,074 INFO L175 Difference]: Start difference. First operand has 132 places, 118 transitions, 1040 flow. Second operand 8 states and 89 transitions. [2024-06-03 22:17:26,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 134 transitions, 1424 flow [2024-06-03 22:17:26,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 134 transitions, 1387 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 22:17:26,114 INFO L231 Difference]: Finished difference. Result has 132 places, 119 transitions, 1071 flow [2024-06-03 22:17:26,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1071, PETRI_PLACES=132, PETRI_TRANSITIONS=119} [2024-06-03 22:17:26,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-03 22:17:26,114 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 1071 flow [2024-06-03 22:17:26,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:17:26,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:26,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:26,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 22:17:26,115 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)] === [2024-06-03 22:17:26,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:26,116 INFO L85 PathProgramCache]: Analyzing trace with hash -334977345, now seen corresponding path program 2 times [2024-06-03 22:17:26,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:26,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895050815] [2024-06-03 22:17:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:26,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:30,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:30,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895050815] [2024-06-03 22:17:30,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895050815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:30,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:30,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:17:30,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103161163] [2024-06-03 22:17:30,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:30,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:17:30,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:30,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:17:30,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:17:30,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:30,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 119 transitions, 1071 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:17:30,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:30,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:30,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:30,816 INFO L124 PetriNetUnfolderBase]: 328/587 cut-off events. [2024-06-03 22:17:30,816 INFO L125 PetriNetUnfolderBase]: For 28461/28461 co-relation queries the response was YES. [2024-06-03 22:17:30,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 587 events. 328/587 cut-off events. For 28461/28461 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2427 event pairs, 45 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3773. Up to 439 conditions per place. [2024-06-03 22:17:30,820 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 101 selfloop transitions, 33 changer transitions 0/136 dead transitions. [2024-06-03 22:17:30,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 136 transitions, 1477 flow [2024-06-03 22:17:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:17:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:17:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 22:17:30,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 22:17:30,821 INFO L175 Difference]: Start difference. First operand has 132 places, 119 transitions, 1071 flow. Second operand 8 states and 94 transitions. [2024-06-03 22:17:30,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 136 transitions, 1477 flow [2024-06-03 22:17:30,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 136 transitions, 1412 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-03 22:17:30,858 INFO L231 Difference]: Finished difference. Result has 136 places, 122 transitions, 1115 flow [2024-06-03 22:17:30,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1115, PETRI_PLACES=136, PETRI_TRANSITIONS=122} [2024-06-03 22:17:30,859 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-03 22:17:30,859 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 122 transitions, 1115 flow [2024-06-03 22:17:30,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:17:30,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:30,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:30,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 22:17:30,860 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)] === [2024-06-03 22:17:30,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:30,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1201860157, now seen corresponding path program 3 times [2024-06-03 22:17:30,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:30,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161188033] [2024-06-03 22:17:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:30,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:35,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:35,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161188033] [2024-06-03 22:17:35,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161188033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:35,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:35,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:17:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398081006] [2024-06-03 22:17:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:35,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:17:35,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:17:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:17:35,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:35,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 122 transitions, 1115 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:17:35,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:35,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:35,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:35,573 INFO L124 PetriNetUnfolderBase]: 325/582 cut-off events. [2024-06-03 22:17:35,573 INFO L125 PetriNetUnfolderBase]: For 28233/28233 co-relation queries the response was YES. [2024-06-03 22:17:35,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3783 conditions, 582 events. 325/582 cut-off events. For 28233/28233 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2395 event pairs, 46 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3716. Up to 470 conditions per place. [2024-06-03 22:17:35,576 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 33 changer transitions 0/134 dead transitions. [2024-06-03 22:17:35,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 134 transitions, 1407 flow [2024-06-03 22:17:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:17:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:17:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 22:17:35,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 22:17:35,578 INFO L175 Difference]: Start difference. First operand has 136 places, 122 transitions, 1115 flow. Second operand 8 states and 94 transitions. [2024-06-03 22:17:35,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 134 transitions, 1407 flow [2024-06-03 22:17:35,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 134 transitions, 1362 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 22:17:35,623 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 1140 flow [2024-06-03 22:17:35,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1140, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-03 22:17:35,624 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-03 22:17:35,624 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 1140 flow [2024-06-03 22:17:35,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:17:35,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:35,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:35,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 22:17:35,626 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)] === [2024-06-03 22:17:35,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:35,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1819673972, now seen corresponding path program 1 times [2024-06-03 22:17:35,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:35,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067785445] [2024-06-03 22:17:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:35,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:40,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:40,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067785445] [2024-06-03 22:17:40,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067785445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:40,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:40,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:17:40,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045211410] [2024-06-03 22:17:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:40,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:17:40,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:17:40,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:17:40,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:40,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 1140 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) [2024-06-03 22:17:40,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:40,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:40,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:40,587 INFO L124 PetriNetUnfolderBase]: 328/587 cut-off events. [2024-06-03 22:17:40,587 INFO L125 PetriNetUnfolderBase]: For 28636/28636 co-relation queries the response was YES. [2024-06-03 22:17:40,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3876 conditions, 587 events. 328/587 cut-off events. For 28636/28636 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2433 event pairs, 47 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 3807. Up to 476 conditions per place. [2024-06-03 22:17:40,591 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 39 changer transitions 0/138 dead transitions. [2024-06-03 22:17:40,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 138 transitions, 1472 flow [2024-06-03 22:17:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:17:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:17:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 22:17:40,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-03 22:17:40,593 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 1140 flow. Second operand 9 states and 101 transitions. [2024-06-03 22:17:40,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 138 transitions, 1472 flow [2024-06-03 22:17:40,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 138 transitions, 1406 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-03 22:17:40,636 INFO L231 Difference]: Finished difference. Result has 145 places, 126 transitions, 1229 flow [2024-06-03 22:17:40,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1229, PETRI_PLACES=145, PETRI_TRANSITIONS=126} [2024-06-03 22:17:40,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-03 22:17:40,637 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 126 transitions, 1229 flow [2024-06-03 22:17:40,637 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) [2024-06-03 22:17:40,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:40,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:40,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 22:17:40,638 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)] === [2024-06-03 22:17:40,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1115024197, now seen corresponding path program 4 times [2024-06-03 22:17:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:40,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163386876] [2024-06-03 22:17:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:45,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163386876] [2024-06-03 22:17:45,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163386876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:45,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:45,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:17:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405613683] [2024-06-03 22:17:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:45,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:17:45,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:45,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:17:45,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:17:45,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:45,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 126 transitions, 1229 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) [2024-06-03 22:17:45,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:45,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:45,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:46,023 INFO L124 PetriNetUnfolderBase]: 325/582 cut-off events. [2024-06-03 22:17:46,023 INFO L125 PetriNetUnfolderBase]: For 29063/29063 co-relation queries the response was YES. [2024-06-03 22:17:46,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3886 conditions, 582 events. 325/582 cut-off events. For 29063/29063 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2399 event pairs, 45 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3814. Up to 464 conditions per place. [2024-06-03 22:17:46,027 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 34 changer transitions 0/139 dead transitions. [2024-06-03 22:17:46,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 139 transitions, 1533 flow [2024-06-03 22:17:46,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:17:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:17:46,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 22:17:46,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-03 22:17:46,031 INFO L175 Difference]: Start difference. First operand has 145 places, 126 transitions, 1229 flow. Second operand 9 states and 101 transitions. [2024-06-03 22:17:46,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 139 transitions, 1533 flow [2024-06-03 22:17:46,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 139 transitions, 1473 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 22:17:46,078 INFO L231 Difference]: Finished difference. Result has 149 places, 126 transitions, 1243 flow [2024-06-03 22:17:46,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1243, PETRI_PLACES=149, PETRI_TRANSITIONS=126} [2024-06-03 22:17:46,079 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-03 22:17:46,079 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 126 transitions, 1243 flow [2024-06-03 22:17:46,079 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) [2024-06-03 22:17:46,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:46,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:46,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 22:17:46,080 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)] === [2024-06-03 22:17:46,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1115024042, now seen corresponding path program 2 times [2024-06-03 22:17:46,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:46,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661997978] [2024-06-03 22:17:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:50,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:50,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661997978] [2024-06-03 22:17:50,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661997978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:50,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:50,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:17:50,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378919209] [2024-06-03 22:17:50,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:50,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:17:50,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:50,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:17:50,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:17:50,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:50,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 126 transitions, 1243 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) [2024-06-03 22:17:50,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:50,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:50,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:50,960 INFO L124 PetriNetUnfolderBase]: 323/579 cut-off events. [2024-06-03 22:17:50,960 INFO L125 PetriNetUnfolderBase]: For 28480/28480 co-relation queries the response was YES. [2024-06-03 22:17:50,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 579 events. 323/579 cut-off events. For 28480/28480 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2384 event pairs, 46 based on Foata normal form. 1/580 useless extension candidates. Maximal degree in co-relation 3794. Up to 459 conditions per place. [2024-06-03 22:17:50,964 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 44 changer transitions 0/138 dead transitions. [2024-06-03 22:17:50,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 138 transitions, 1543 flow [2024-06-03 22:17:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:17:50,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:17:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 22:17:50,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-03 22:17:50,966 INFO L175 Difference]: Start difference. First operand has 149 places, 126 transitions, 1243 flow. Second operand 9 states and 103 transitions. [2024-06-03 22:17:50,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 138 transitions, 1543 flow [2024-06-03 22:17:51,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 138 transitions, 1463 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 22:17:51,014 INFO L231 Difference]: Finished difference. Result has 149 places, 126 transitions, 1256 flow [2024-06-03 22:17:51,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1256, PETRI_PLACES=149, PETRI_TRANSITIONS=126} [2024-06-03 22:17:51,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-03 22:17:51,015 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 126 transitions, 1256 flow [2024-06-03 22:17:51,015 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) [2024-06-03 22:17:51,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:51,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:51,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 22:17:51,015 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)] === [2024-06-03 22:17:51,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1681299427, now seen corresponding path program 5 times [2024-06-03 22:17:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:51,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35158890] [2024-06-03 22:17:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:17:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:17:55,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:17:55,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35158890] [2024-06-03 22:17:55,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35158890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:17:55,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:17:55,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:17:55,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359622840] [2024-06-03 22:17:55,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:17:55,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:17:55,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:17:55,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:17:55,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:17:55,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:17:55,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 126 transitions, 1256 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:17:55,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:17:55,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:17:55,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:17:55,952 INFO L124 PetriNetUnfolderBase]: 327/587 cut-off events. [2024-06-03 22:17:55,952 INFO L125 PetriNetUnfolderBase]: For 29414/29414 co-relation queries the response was YES. [2024-06-03 22:17:55,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3899 conditions, 587 events. 327/587 cut-off events. For 29414/29414 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2432 event pairs, 24 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3826. Up to 431 conditions per place. [2024-06-03 22:17:55,956 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 106 selfloop transitions, 36 changer transitions 0/144 dead transitions. [2024-06-03 22:17:55,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 144 transitions, 1675 flow [2024-06-03 22:17:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:17:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:17:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 22:17:55,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 22:17:55,957 INFO L175 Difference]: Start difference. First operand has 149 places, 126 transitions, 1256 flow. Second operand 8 states and 97 transitions. [2024-06-03 22:17:55,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 144 transitions, 1675 flow [2024-06-03 22:17:56,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 144 transitions, 1568 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 22:17:56,009 INFO L231 Difference]: Finished difference. Result has 149 places, 127 transitions, 1232 flow [2024-06-03 22:17:56,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=149, PETRI_TRANSITIONS=127} [2024-06-03 22:17:56,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-03 22:17:56,010 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 127 transitions, 1232 flow [2024-06-03 22:17:56,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:17:56,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:17:56,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:17:56,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 22:17:56,010 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)] === [2024-06-03 22:17:56,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:17:56,011 INFO L85 PathProgramCache]: Analyzing trace with hash -969222841, now seen corresponding path program 6 times [2024-06-03 22:17:56,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:17:56,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267227451] [2024-06-03 22:17:56,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:17:56,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:17:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:00,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:00,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267227451] [2024-06-03 22:18:00,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267227451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:00,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:00,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:18:00,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761381758] [2024-06-03 22:18:00,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:00,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:18:00,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:00,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:18:00,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:18:00,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:00,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 127 transitions, 1232 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:18:00,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:00,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:00,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:00,699 INFO L124 PetriNetUnfolderBase]: 324/582 cut-off events. [2024-06-03 22:18:00,699 INFO L125 PetriNetUnfolderBase]: For 28743/28743 co-relation queries the response was YES. [2024-06-03 22:18:00,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3810 conditions, 582 events. 324/582 cut-off events. For 28743/28743 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2414 event pairs, 44 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3736. Up to 470 conditions per place. [2024-06-03 22:18:00,703 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 35 changer transitions 0/142 dead transitions. [2024-06-03 22:18:00,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 142 transitions, 1548 flow [2024-06-03 22:18:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:18:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:18:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-03 22:18:00,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 22:18:00,704 INFO L175 Difference]: Start difference. First operand has 149 places, 127 transitions, 1232 flow. Second operand 8 states and 96 transitions. [2024-06-03 22:18:00,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 142 transitions, 1548 flow [2024-06-03 22:18:00,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 142 transitions, 1437 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 22:18:00,752 INFO L231 Difference]: Finished difference. Result has 149 places, 127 transitions, 1195 flow [2024-06-03 22:18:00,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1195, PETRI_PLACES=149, PETRI_TRANSITIONS=127} [2024-06-03 22:18:00,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-03 22:18:00,752 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 127 transitions, 1195 flow [2024-06-03 22:18:00,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:18:00,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:00,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:00,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 22:18:00,753 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)] === [2024-06-03 22:18:00,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash -969072956, now seen corresponding path program 3 times [2024-06-03 22:18:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630605045] [2024-06-03 22:18:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:05,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630605045] [2024-06-03 22:18:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630605045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:05,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:05,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:18:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130395648] [2024-06-03 22:18:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:05,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:18:05,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:05,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:18:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:18:05,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:05,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 127 transitions, 1195 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) [2024-06-03 22:18:05,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:05,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:05,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:05,687 INFO L124 PetriNetUnfolderBase]: 327/587 cut-off events. [2024-06-03 22:18:05,687 INFO L125 PetriNetUnfolderBase]: For 28852/28852 co-relation queries the response was YES. [2024-06-03 22:18:05,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3773 conditions, 587 events. 327/587 cut-off events. For 28852/28852 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2439 event pairs, 45 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 3700. Up to 476 conditions per place. [2024-06-03 22:18:05,691 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 45 changer transitions 0/144 dead transitions. [2024-06-03 22:18:05,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 144 transitions, 1543 flow [2024-06-03 22:18:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:18:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:18:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 22:18:05,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-03 22:18:05,693 INFO L175 Difference]: Start difference. First operand has 149 places, 127 transitions, 1195 flow. Second operand 9 states and 104 transitions. [2024-06-03 22:18:05,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 144 transitions, 1543 flow [2024-06-03 22:18:05,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1462 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 22:18:05,744 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1241 flow [2024-06-03 22:18:05,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1241, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-03 22:18:05,744 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-03 22:18:05,744 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1241 flow [2024-06-03 22:18:05,745 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) [2024-06-03 22:18:05,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:05,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:05,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 22:18:05,745 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)] === [2024-06-03 22:18:05,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:05,745 INFO L85 PathProgramCache]: Analyzing trace with hash -969078691, now seen corresponding path program 7 times [2024-06-03 22:18:05,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:05,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503690342] [2024-06-03 22:18:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:05,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:10,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:10,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503690342] [2024-06-03 22:18:10,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503690342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:10,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:10,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:18:10,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340104028] [2024-06-03 22:18:10,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:10,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:18:10,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:18:10,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:18:10,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:10,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1241 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) [2024-06-03 22:18:10,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:10,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:10,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:11,064 INFO L124 PetriNetUnfolderBase]: 334/600 cut-off events. [2024-06-03 22:18:11,064 INFO L125 PetriNetUnfolderBase]: For 31139/31139 co-relation queries the response was YES. [2024-06-03 22:18:11,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3846 conditions, 600 events. 334/600 cut-off events. For 31139/31139 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2521 event pairs, 44 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3773. Up to 481 conditions per place. [2024-06-03 22:18:11,068 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2024-06-03 22:18:11,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 148 transitions, 1596 flow [2024-06-03 22:18:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:18:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:18:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 22:18:11,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-03 22:18:11,069 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1241 flow. Second operand 9 states and 104 transitions. [2024-06-03 22:18:11,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 148 transitions, 1596 flow [2024-06-03 22:18:11,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 148 transitions, 1457 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 22:18:11,122 INFO L231 Difference]: Finished difference. Result has 153 places, 132 transitions, 1211 flow [2024-06-03 22:18:11,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1211, PETRI_PLACES=153, PETRI_TRANSITIONS=132} [2024-06-03 22:18:11,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-03 22:18:11,122 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 132 transitions, 1211 flow [2024-06-03 22:18:11,122 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) [2024-06-03 22:18:11,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:11,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:11,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 22:18:11,123 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)] === [2024-06-03 22:18:11,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:11,123 INFO L85 PathProgramCache]: Analyzing trace with hash -969072739, now seen corresponding path program 1 times [2024-06-03 22:18:11,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:11,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866208500] [2024-06-03 22:18:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:15,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:15,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866208500] [2024-06-03 22:18:15,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866208500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:15,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:15,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:18:15,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071101064] [2024-06-03 22:18:15,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:15,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:18:15,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:15,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:18:15,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:18:15,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:15,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 132 transitions, 1211 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) [2024-06-03 22:18:15,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:15,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:15,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:16,157 INFO L124 PetriNetUnfolderBase]: 346/620 cut-off events. [2024-06-03 22:18:16,157 INFO L125 PetriNetUnfolderBase]: For 34877/34877 co-relation queries the response was YES. [2024-06-03 22:18:16,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3942 conditions, 620 events. 346/620 cut-off events. For 34877/34877 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2628 event pairs, 45 based on Foata normal form. 4/624 useless extension candidates. Maximal degree in co-relation 3868. Up to 308 conditions per place. [2024-06-03 22:18:16,161 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 95 selfloop transitions, 60 changer transitions 0/157 dead transitions. [2024-06-03 22:18:16,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 1819 flow [2024-06-03 22:18:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:18:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:18:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-03 22:18:16,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-03 22:18:16,162 INFO L175 Difference]: Start difference. First operand has 153 places, 132 transitions, 1211 flow. Second operand 9 states and 118 transitions. [2024-06-03 22:18:16,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 1819 flow [2024-06-03 22:18:16,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 157 transitions, 1755 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 22:18:16,220 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 1320 flow [2024-06-03 22:18:16,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1320, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2024-06-03 22:18:16,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-03 22:18:16,220 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 1320 flow [2024-06-03 22:18:16,220 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) [2024-06-03 22:18:16,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:16,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:16,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 22:18:16,221 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)] === [2024-06-03 22:18:16,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:16,221 INFO L85 PathProgramCache]: Analyzing trace with hash -969078536, now seen corresponding path program 4 times [2024-06-03 22:18:16,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:16,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127213421] [2024-06-03 22:18:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:16,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:20,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:20,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127213421] [2024-06-03 22:18:20,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127213421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:20,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:20,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 22:18:20,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57608142] [2024-06-03 22:18:20,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:20,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 22:18:20,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:20,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 22:18:20,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 22:18:20,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:20,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 1320 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:18:20,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:20,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:20,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:20,685 INFO L124 PetriNetUnfolderBase]: 349/625 cut-off events. [2024-06-03 22:18:20,686 INFO L125 PetriNetUnfolderBase]: For 31604/31604 co-relation queries the response was YES. [2024-06-03 22:18:20,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4095 conditions, 625 events. 349/625 cut-off events. For 31604/31604 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2655 event pairs, 45 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 4021. Up to 477 conditions per place. [2024-06-03 22:18:20,689 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 54 changer transitions 0/155 dead transitions. [2024-06-03 22:18:20,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 155 transitions, 1800 flow [2024-06-03 22:18:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 22:18:20,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 22:18:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-03 22:18:20,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-03 22:18:20,692 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 1320 flow. Second operand 8 states and 103 transitions. [2024-06-03 22:18:20,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 155 transitions, 1800 flow [2024-06-03 22:18:20,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 155 transitions, 1655 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-03 22:18:20,751 INFO L231 Difference]: Finished difference. Result has 157 places, 137 transitions, 1323 flow [2024-06-03 22:18:20,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1323, PETRI_PLACES=157, PETRI_TRANSITIONS=137} [2024-06-03 22:18:20,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-03 22:18:20,751 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 137 transitions, 1323 flow [2024-06-03 22:18:20,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 22:18:20,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:20,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:20,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 22:18:20,752 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)] === [2024-06-03 22:18:20,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1675783225, now seen corresponding path program 2 times [2024-06-03 22:18:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:20,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392928019] [2024-06-03 22:18:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:20,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:26,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:26,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392928019] [2024-06-03 22:18:26,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392928019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:26,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:26,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:18:26,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806379529] [2024-06-03 22:18:26,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:26,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:18:26,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:26,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:18:26,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:18:26,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:26,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 137 transitions, 1323 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) [2024-06-03 22:18:26,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:26,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:26,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:26,474 INFO L124 PetriNetUnfolderBase]: 365/651 cut-off events. [2024-06-03 22:18:26,474 INFO L125 PetriNetUnfolderBase]: For 36220/36220 co-relation queries the response was YES. [2024-06-03 22:18:26,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 651 events. 365/651 cut-off events. For 36220/36220 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2802 event pairs, 41 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4247. Up to 315 conditions per place. [2024-06-03 22:18:26,480 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 62 changer transitions 0/161 dead transitions. [2024-06-03 22:18:26,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 161 transitions, 1967 flow [2024-06-03 22:18:26,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:18:26,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:18:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 22:18:26,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 22:18:26,482 INFO L175 Difference]: Start difference. First operand has 157 places, 137 transitions, 1323 flow. Second operand 9 states and 114 transitions. [2024-06-03 22:18:26,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 161 transitions, 1967 flow [2024-06-03 22:18:26,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 161 transitions, 1794 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 22:18:26,547 INFO L231 Difference]: Finished difference. Result has 160 places, 141 transitions, 1362 flow [2024-06-03 22:18:26,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1362, PETRI_PLACES=160, PETRI_TRANSITIONS=141} [2024-06-03 22:18:26,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-03 22:18:26,548 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 141 transitions, 1362 flow [2024-06-03 22:18:26,548 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) [2024-06-03 22:18:26,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:26,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:26,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 22:18:26,548 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)] === [2024-06-03 22:18:26,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:26,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1830602843, now seen corresponding path program 8 times [2024-06-03 22:18:26,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:26,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542422669] [2024-06-03 22:18:26,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:26,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:31,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:31,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542422669] [2024-06-03 22:18:31,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542422669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:31,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:31,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:18:31,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94223493] [2024-06-03 22:18:31,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:31,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:18:31,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:18:31,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:18:31,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:31,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 141 transitions, 1362 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) [2024-06-03 22:18:31,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:31,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:31,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:32,085 INFO L124 PetriNetUnfolderBase]: 372/664 cut-off events. [2024-06-03 22:18:32,086 INFO L125 PetriNetUnfolderBase]: For 38178/38178 co-relation queries the response was YES. [2024-06-03 22:18:32,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 664 events. 372/664 cut-off events. For 38178/38178 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2892 event pairs, 47 based on Foata normal form. 2/666 useless extension candidates. Maximal degree in co-relation 4376. Up to 550 conditions per place. [2024-06-03 22:18:32,091 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 116 selfloop transitions, 39 changer transitions 0/157 dead transitions. [2024-06-03 22:18:32,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 157 transitions, 1735 flow [2024-06-03 22:18:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:18:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:18:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 22:18:32,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 22:18:32,098 INFO L175 Difference]: Start difference. First operand has 160 places, 141 transitions, 1362 flow. Second operand 9 states and 99 transitions. [2024-06-03 22:18:32,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 157 transitions, 1735 flow [2024-06-03 22:18:32,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 157 transitions, 1632 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-03 22:18:32,170 INFO L231 Difference]: Finished difference. Result has 164 places, 144 transitions, 1376 flow [2024-06-03 22:18:32,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1376, PETRI_PLACES=164, PETRI_TRANSITIONS=144} [2024-06-03 22:18:32,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-03 22:18:32,170 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 144 transitions, 1376 flow [2024-06-03 22:18:32,170 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) [2024-06-03 22:18:32,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:32,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:32,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 22:18:32,171 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)] === [2024-06-03 22:18:32,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:32,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1830597108, now seen corresponding path program 5 times [2024-06-03 22:18:32,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:32,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261509314] [2024-06-03 22:18:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:32,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:36,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261509314] [2024-06-03 22:18:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261509314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:36,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:36,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:18:36,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864502805] [2024-06-03 22:18:36,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:36,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:18:36,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:36,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:18:36,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:18:36,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:36,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 144 transitions, 1376 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) [2024-06-03 22:18:36,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:36,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:36,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:37,256 INFO L124 PetriNetUnfolderBase]: 375/669 cut-off events. [2024-06-03 22:18:37,256 INFO L125 PetriNetUnfolderBase]: For 38232/38232 co-relation queries the response was YES. [2024-06-03 22:18:37,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 669 events. 375/669 cut-off events. For 38232/38232 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2920 event pairs, 46 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 4369. Up to 558 conditions per place. [2024-06-03 22:18:37,261 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 40 changer transitions 0/158 dead transitions. [2024-06-03 22:18:37,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 158 transitions, 1745 flow [2024-06-03 22:18:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:18:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:18:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 22:18:37,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-03 22:18:37,262 INFO L175 Difference]: Start difference. First operand has 164 places, 144 transitions, 1376 flow. Second operand 9 states and 101 transitions. [2024-06-03 22:18:37,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 158 transitions, 1745 flow [2024-06-03 22:18:37,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 158 transitions, 1690 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 22:18:37,326 INFO L231 Difference]: Finished difference. Result has 168 places, 146 transitions, 1439 flow [2024-06-03 22:18:37,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1439, PETRI_PLACES=168, PETRI_TRANSITIONS=146} [2024-06-03 22:18:37,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-03 22:18:37,327 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 146 transitions, 1439 flow [2024-06-03 22:18:37,327 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) [2024-06-03 22:18:37,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:37,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:37,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 22:18:37,327 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)] === [2024-06-03 22:18:37,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:37,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1830395298, now seen corresponding path program 6 times [2024-06-03 22:18:37,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:37,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738704248] [2024-06-03 22:18:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:37,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:41,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:41,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738704248] [2024-06-03 22:18:41,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738704248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:41,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:41,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:18:41,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159044408] [2024-06-03 22:18:41,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:41,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:18:41,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:41,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:18:41,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:18:41,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:41,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 146 transitions, 1439 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) [2024-06-03 22:18:41,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:41,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:41,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:42,051 INFO L124 PetriNetUnfolderBase]: 378/674 cut-off events. [2024-06-03 22:18:42,051 INFO L125 PetriNetUnfolderBase]: For 39743/39743 co-relation queries the response was YES. [2024-06-03 22:18:42,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4534 conditions, 674 events. 378/674 cut-off events. For 39743/39743 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2942 event pairs, 48 based on Foata normal form. 1/675 useless extension candidates. Maximal degree in co-relation 4455. Up to 563 conditions per place. [2024-06-03 22:18:42,055 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 41 changer transitions 0/160 dead transitions. [2024-06-03 22:18:42,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 160 transitions, 1816 flow [2024-06-03 22:18:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:18:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:18:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 22:18:42,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-03 22:18:42,056 INFO L175 Difference]: Start difference. First operand has 168 places, 146 transitions, 1439 flow. Second operand 9 states and 100 transitions. [2024-06-03 22:18:42,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 160 transitions, 1816 flow [2024-06-03 22:18:42,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 160 transitions, 1721 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 22:18:42,133 INFO L231 Difference]: Finished difference. Result has 170 places, 148 transitions, 1468 flow [2024-06-03 22:18:42,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1468, PETRI_PLACES=170, PETRI_TRANSITIONS=148} [2024-06-03 22:18:42,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-03 22:18:42,133 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 148 transitions, 1468 flow [2024-06-03 22:18:42,133 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) [2024-06-03 22:18:42,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:42,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:42,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 22:18:42,134 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)] === [2024-06-03 22:18:42,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:42,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1830395081, now seen corresponding path program 3 times [2024-06-03 22:18:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:42,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108778859] [2024-06-03 22:18:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:42,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:46,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:46,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108778859] [2024-06-03 22:18:46,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108778859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:46,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:46,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:18:46,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120228765] [2024-06-03 22:18:46,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:46,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:18:46,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:46,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:18:46,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:18:47,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:47,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 148 transitions, 1468 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) [2024-06-03 22:18:47,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:47,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:47,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:47,486 INFO L124 PetriNetUnfolderBase]: 384/684 cut-off events. [2024-06-03 22:18:47,486 INFO L125 PetriNetUnfolderBase]: For 42476/42476 co-relation queries the response was YES. [2024-06-03 22:18:47,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4630 conditions, 684 events. 384/684 cut-off events. For 42476/42476 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3000 event pairs, 42 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 4550. Up to 331 conditions per place. [2024-06-03 22:18:47,491 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 70 changer transitions 0/170 dead transitions. [2024-06-03 22:18:47,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 170 transitions, 2117 flow [2024-06-03 22:18:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:18:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:18:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 22:18:47,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 22:18:47,492 INFO L175 Difference]: Start difference. First operand has 170 places, 148 transitions, 1468 flow. Second operand 9 states and 114 transitions. [2024-06-03 22:18:47,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 170 transitions, 2117 flow [2024-06-03 22:18:47,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 170 transitions, 2016 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 22:18:47,571 INFO L231 Difference]: Finished difference. Result has 172 places, 150 transitions, 1547 flow [2024-06-03 22:18:47,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=172, PETRI_TRANSITIONS=150} [2024-06-03 22:18:47,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-03 22:18:47,572 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 150 transitions, 1547 flow [2024-06-03 22:18:47,572 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) [2024-06-03 22:18:47,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:47,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:47,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 22:18:47,572 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)] === [2024-06-03 22:18:47,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:47,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1830387641, now seen corresponding path program 4 times [2024-06-03 22:18:47,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:47,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023041011] [2024-06-03 22:18:47,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:47,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:52,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023041011] [2024-06-03 22:18:52,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023041011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:52,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:52,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:18:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124598056] [2024-06-03 22:18:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:52,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:18:52,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:18:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:18:52,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:52,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 150 transitions, 1547 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) [2024-06-03 22:18:52,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:52,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:52,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:52,517 INFO L124 PetriNetUnfolderBase]: 380/678 cut-off events. [2024-06-03 22:18:52,517 INFO L125 PetriNetUnfolderBase]: For 40840/40840 co-relation queries the response was YES. [2024-06-03 22:18:52,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4595 conditions, 678 events. 380/678 cut-off events. For 40840/40840 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2949 event pairs, 40 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4514. Up to 330 conditions per place. [2024-06-03 22:18:52,522 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 74 changer transitions 0/168 dead transitions. [2024-06-03 22:18:52,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 168 transitions, 2049 flow [2024-06-03 22:18:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:18:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:18:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 22:18:52,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 22:18:52,523 INFO L175 Difference]: Start difference. First operand has 172 places, 150 transitions, 1547 flow. Second operand 9 states and 112 transitions. [2024-06-03 22:18:52,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 168 transitions, 2049 flow [2024-06-03 22:18:52,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 168 transitions, 1861 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-03 22:18:52,602 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 1513 flow [2024-06-03 22:18:52,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1513, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2024-06-03 22:18:52,603 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-03 22:18:52,603 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 1513 flow [2024-06-03 22:18:52,603 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) [2024-06-03 22:18:52,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:52,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:52,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 22:18:52,603 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)] === [2024-06-03 22:18:52,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:52,604 INFO L85 PathProgramCache]: Analyzing trace with hash 909942583, now seen corresponding path program 5 times [2024-06-03 22:18:52,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:52,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684660885] [2024-06-03 22:18:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:52,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:18:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:18:57,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:18:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684660885] [2024-06-03 22:18:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684660885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:18:57,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:18:57,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:18:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922905238] [2024-06-03 22:18:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:18:57,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:18:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:18:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:18:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:18:57,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:18:57,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 1513 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) [2024-06-03 22:18:57,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:18:57,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:18:57,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:18:57,622 INFO L124 PetriNetUnfolderBase]: 386/688 cut-off events. [2024-06-03 22:18:57,622 INFO L125 PetriNetUnfolderBase]: For 43026/43026 co-relation queries the response was YES. [2024-06-03 22:18:57,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4641 conditions, 688 events. 386/688 cut-off events. For 43026/43026 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3013 event pairs, 43 based on Foata normal form. 2/690 useless extension candidates. Maximal degree in co-relation 4559. Up to 648 conditions per place. [2024-06-03 22:18:57,628 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 147 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2024-06-03 22:18:57,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 164 transitions, 1904 flow [2024-06-03 22:18:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:18:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:18:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 22:18:57,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-03 22:18:57,629 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 1513 flow. Second operand 9 states and 92 transitions. [2024-06-03 22:18:57,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 164 transitions, 1904 flow [2024-06-03 22:18:57,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 164 transitions, 1748 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 22:18:57,706 INFO L231 Difference]: Finished difference. Result has 175 places, 152 transitions, 1437 flow [2024-06-03 22:18:57,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1437, PETRI_PLACES=175, PETRI_TRANSITIONS=152} [2024-06-03 22:18:57,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-03 22:18:57,707 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 152 transitions, 1437 flow [2024-06-03 22:18:57,708 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) [2024-06-03 22:18:57,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:18:57,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:18:57,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 22:18:57,708 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)] === [2024-06-03 22:18:57,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:18:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash 909675673, now seen corresponding path program 6 times [2024-06-03 22:18:57,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:18:57,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071582646] [2024-06-03 22:18:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:18:57,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:18:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:02,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:02,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071582646] [2024-06-03 22:19:02,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071582646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:02,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:02,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:02,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106348827] [2024-06-03 22:19:02,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:02,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:02,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:02,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 152 transitions, 1437 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) [2024-06-03 22:19:02,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:02,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:02,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:02,841 INFO L124 PetriNetUnfolderBase]: 402/714 cut-off events. [2024-06-03 22:19:02,841 INFO L125 PetriNetUnfolderBase]: For 48117/48117 co-relation queries the response was YES. [2024-06-03 22:19:02,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 714 events. 402/714 cut-off events. For 48117/48117 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3149 event pairs, 43 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 4754. Up to 645 conditions per place. [2024-06-03 22:19:02,846 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 23 changer transitions 0/170 dead transitions. [2024-06-03 22:19:02,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 170 transitions, 2001 flow [2024-06-03 22:19:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 22:19:02,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 22:19:02,847 INFO L175 Difference]: Start difference. First operand has 175 places, 152 transitions, 1437 flow. Second operand 9 states and 97 transitions. [2024-06-03 22:19:02,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 170 transitions, 2001 flow [2024-06-03 22:19:02,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 170 transitions, 1942 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 22:19:02,923 INFO L231 Difference]: Finished difference. Result has 177 places, 156 transitions, 1519 flow [2024-06-03 22:19:02,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1519, PETRI_PLACES=177, PETRI_TRANSITIONS=156} [2024-06-03 22:19:02,924 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-03 22:19:02,924 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 156 transitions, 1519 flow [2024-06-03 22:19:02,924 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) [2024-06-03 22:19:02,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:02,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:02,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 22:19:02,924 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)] === [2024-06-03 22:19:02,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:02,925 INFO L85 PathProgramCache]: Analyzing trace with hash 909675456, now seen corresponding path program 7 times [2024-06-03 22:19:02,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:02,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616205467] [2024-06-03 22:19:02,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:02,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:07,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:07,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616205467] [2024-06-03 22:19:07,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616205467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:07,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:07,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:07,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251046475] [2024-06-03 22:19:07,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:07,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:07,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:07,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:07,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:07,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 156 transitions, 1519 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) [2024-06-03 22:19:07,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:07,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:07,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:07,454 INFO L124 PetriNetUnfolderBase]: 405/719 cut-off events. [2024-06-03 22:19:07,454 INFO L125 PetriNetUnfolderBase]: For 48208/48208 co-relation queries the response was YES. [2024-06-03 22:19:07,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4906 conditions, 719 events. 405/719 cut-off events. For 48208/48208 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3184 event pairs, 50 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 4822. Up to 692 conditions per place. [2024-06-03 22:19:07,459 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 15 changer transitions 0/167 dead transitions. [2024-06-03 22:19:07,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 167 transitions, 1906 flow [2024-06-03 22:19:07,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-03 22:19:07,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090277777777778 [2024-06-03 22:19:07,460 INFO L175 Difference]: Start difference. First operand has 177 places, 156 transitions, 1519 flow. Second operand 9 states and 89 transitions. [2024-06-03 22:19:07,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 167 transitions, 1906 flow [2024-06-03 22:19:07,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 167 transitions, 1842 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-03 22:19:07,548 INFO L231 Difference]: Finished difference. Result has 181 places, 158 transitions, 1531 flow [2024-06-03 22:19:07,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1531, PETRI_PLACES=181, PETRI_TRANSITIONS=158} [2024-06-03 22:19:07,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-03 22:19:07,549 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 158 transitions, 1531 flow [2024-06-03 22:19:07,549 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) [2024-06-03 22:19:07,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:07,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:07,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 22:19:07,549 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)] === [2024-06-03 22:19:07,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash 909683113, now seen corresponding path program 7 times [2024-06-03 22:19:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:07,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283100208] [2024-06-03 22:19:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:12,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:12,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283100208] [2024-06-03 22:19:12,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283100208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:12,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:12,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:12,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813109193] [2024-06-03 22:19:12,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:12,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:12,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:12,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:12,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:12,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 158 transitions, 1531 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) [2024-06-03 22:19:12,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:12,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:12,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:12,563 INFO L124 PetriNetUnfolderBase]: 401/713 cut-off events. [2024-06-03 22:19:12,563 INFO L125 PetriNetUnfolderBase]: For 47589/47589 co-relation queries the response was YES. [2024-06-03 22:19:12,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4726 conditions, 713 events. 401/713 cut-off events. For 47589/47589 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3153 event pairs, 43 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4640. Up to 647 conditions per place. [2024-06-03 22:19:12,568 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 147 selfloop transitions, 22 changer transitions 0/171 dead transitions. [2024-06-03 22:19:12,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 171 transitions, 1897 flow [2024-06-03 22:19:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 22:19:12,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 22:19:12,569 INFO L175 Difference]: Start difference. First operand has 181 places, 158 transitions, 1531 flow. Second operand 9 states and 97 transitions. [2024-06-03 22:19:12,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 171 transitions, 1897 flow [2024-06-03 22:19:12,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 171 transitions, 1822 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-03 22:19:12,652 INFO L231 Difference]: Finished difference. Result has 183 places, 158 transitions, 1505 flow [2024-06-03 22:19:12,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1505, PETRI_PLACES=183, PETRI_TRANSITIONS=158} [2024-06-03 22:19:12,653 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-03 22:19:12,653 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 158 transitions, 1505 flow [2024-06-03 22:19:12,653 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) [2024-06-03 22:19:12,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:12,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:12,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 22:19:12,654 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)] === [2024-06-03 22:19:12,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:12,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1923055591, now seen corresponding path program 8 times [2024-06-03 22:19:12,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:12,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514616863] [2024-06-03 22:19:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:12,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:16,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:16,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514616863] [2024-06-03 22:19:16,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514616863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:16,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:16,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:16,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522921951] [2024-06-03 22:19:16,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:16,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:16,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 158 transitions, 1505 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) [2024-06-03 22:19:16,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:16,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:16,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:17,284 INFO L124 PetriNetUnfolderBase]: 407/723 cut-off events. [2024-06-03 22:19:17,284 INFO L125 PetriNetUnfolderBase]: For 49343/49343 co-relation queries the response was YES. [2024-06-03 22:19:17,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4812 conditions, 723 events. 407/723 cut-off events. For 49343/49343 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3209 event pairs, 47 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 4725. Up to 659 conditions per place. [2024-06-03 22:19:17,290 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 23 changer transitions 0/176 dead transitions. [2024-06-03 22:19:17,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 176 transitions, 2095 flow [2024-06-03 22:19:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 22:19:17,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-03 22:19:17,291 INFO L175 Difference]: Start difference. First operand has 183 places, 158 transitions, 1505 flow. Second operand 9 states and 100 transitions. [2024-06-03 22:19:17,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 176 transitions, 2095 flow [2024-06-03 22:19:17,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 2039 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 22:19:17,372 INFO L231 Difference]: Finished difference. Result has 184 places, 162 transitions, 1598 flow [2024-06-03 22:19:17,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=175, 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=9, PETRI_FLOW=1598, PETRI_PLACES=184, PETRI_TRANSITIONS=162} [2024-06-03 22:19:17,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-03 22:19:17,372 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 162 transitions, 1598 flow [2024-06-03 22:19:17,373 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) [2024-06-03 22:19:17,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:17,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:17,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 22:19:17,373 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)] === [2024-06-03 22:19:17,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash 652973136, now seen corresponding path program 8 times [2024-06-03 22:19:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:17,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029830804] [2024-06-03 22:19:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:17,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:21,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:21,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029830804] [2024-06-03 22:19:21,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029830804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:21,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:21,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:21,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349115156] [2024-06-03 22:19:21,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:21,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:21,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:21,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:21,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:21,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:21,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 162 transitions, 1598 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) [2024-06-03 22:19:21,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:21,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:21,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:22,340 INFO L124 PetriNetUnfolderBase]: 410/728 cut-off events. [2024-06-03 22:19:22,340 INFO L125 PetriNetUnfolderBase]: For 49384/49384 co-relation queries the response was YES. [2024-06-03 22:19:22,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 728 events. 410/728 cut-off events. For 49384/49384 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3244 event pairs, 52 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 4798. Up to 692 conditions per place. [2024-06-03 22:19:22,346 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 20 changer transitions 0/173 dead transitions. [2024-06-03 22:19:22,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 173 transitions, 2001 flow [2024-06-03 22:19:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 22:19:22,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-03 22:19:22,347 INFO L175 Difference]: Start difference. First operand has 184 places, 162 transitions, 1598 flow. Second operand 9 states and 92 transitions. [2024-06-03 22:19:22,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 173 transitions, 2001 flow [2024-06-03 22:19:22,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 173 transitions, 1930 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-03 22:19:22,443 INFO L231 Difference]: Finished difference. Result has 188 places, 164 transitions, 1617 flow [2024-06-03 22:19:22,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1617, PETRI_PLACES=188, PETRI_TRANSITIONS=164} [2024-06-03 22:19:22,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-03 22:19:22,444 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 164 transitions, 1617 flow [2024-06-03 22:19:22,444 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) [2024-06-03 22:19:22,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:22,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:22,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 22:19:22,445 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)] === [2024-06-03 22:19:22,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash 653182603, now seen corresponding path program 9 times [2024-06-03 22:19:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509647960] [2024-06-03 22:19:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:27,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509647960] [2024-06-03 22:19:27,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509647960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:27,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:27,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:27,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078038680] [2024-06-03 22:19:27,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:27,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:27,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:27,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:27,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:27,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:27,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 164 transitions, 1617 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) [2024-06-03 22:19:27,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:27,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:27,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:27,708 INFO L124 PetriNetUnfolderBase]: 416/738 cut-off events. [2024-06-03 22:19:27,708 INFO L125 PetriNetUnfolderBase]: For 52484/52484 co-relation queries the response was YES. [2024-06-03 22:19:27,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4941 conditions, 738 events. 416/738 cut-off events. For 52484/52484 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3301 event pairs, 48 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4851. Up to 670 conditions per place. [2024-06-03 22:19:27,714 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 26 changer transitions 0/179 dead transitions. [2024-06-03 22:19:27,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 179 transitions, 2164 flow [2024-06-03 22:19:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:27,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 22:19:27,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-03 22:19:27,716 INFO L175 Difference]: Start difference. First operand has 188 places, 164 transitions, 1617 flow. Second operand 9 states and 98 transitions. [2024-06-03 22:19:27,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 179 transitions, 2164 flow [2024-06-03 22:19:27,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 179 transitions, 2097 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-03 22:19:27,804 INFO L231 Difference]: Finished difference. Result has 190 places, 166 transitions, 1650 flow [2024-06-03 22:19:27,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1650, PETRI_PLACES=190, PETRI_TRANSITIONS=166} [2024-06-03 22:19:27,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-03 22:19:27,805 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 166 transitions, 1650 flow [2024-06-03 22:19:27,805 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) [2024-06-03 22:19:27,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:27,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:27,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 22:19:27,806 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)] === [2024-06-03 22:19:27,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:27,806 INFO L85 PathProgramCache]: Analyzing trace with hash 653175163, now seen corresponding path program 10 times [2024-06-03 22:19:27,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:27,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592064664] [2024-06-03 22:19:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:27,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:32,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:32,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592064664] [2024-06-03 22:19:32,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592064664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:32,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:32,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:32,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692984580] [2024-06-03 22:19:32,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:32,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:32,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:32,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:32,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 166 transitions, 1650 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) [2024-06-03 22:19:32,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:32,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:32,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:33,394 INFO L124 PetriNetUnfolderBase]: 412/732 cut-off events. [2024-06-03 22:19:33,394 INFO L125 PetriNetUnfolderBase]: For 50283/50283 co-relation queries the response was YES. [2024-06-03 22:19:33,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 732 events. 412/732 cut-off events. For 50283/50283 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3284 event pairs, 47 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 4710. Up to 667 conditions per place. [2024-06-03 22:19:33,400 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 25 changer transitions 0/179 dead transitions. [2024-06-03 22:19:33,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 179 transitions, 2032 flow [2024-06-03 22:19:33,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 22:19:33,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 22:19:33,401 INFO L175 Difference]: Start difference. First operand has 190 places, 166 transitions, 1650 flow. Second operand 9 states and 99 transitions. [2024-06-03 22:19:33,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 179 transitions, 2032 flow [2024-06-03 22:19:33,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 179 transitions, 1917 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-03 22:19:33,494 INFO L231 Difference]: Finished difference. Result has 192 places, 166 transitions, 1590 flow [2024-06-03 22:19:33,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1590, PETRI_PLACES=192, PETRI_TRANSITIONS=166} [2024-06-03 22:19:33,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-03 22:19:33,494 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 166 transitions, 1590 flow [2024-06-03 22:19:33,495 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) [2024-06-03 22:19:33,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:33,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:33,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 22:19:33,495 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)] === [2024-06-03 22:19:33,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:33,495 INFO L85 PathProgramCache]: Analyzing trace with hash 652967401, now seen corresponding path program 9 times [2024-06-03 22:19:33,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:33,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222469753] [2024-06-03 22:19:33,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:33,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:38,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:38,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222469753] [2024-06-03 22:19:38,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222469753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:38,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:38,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:38,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171890294] [2024-06-03 22:19:38,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:38,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:38,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:38,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:38,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:38,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:38,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 166 transitions, 1590 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) [2024-06-03 22:19:38,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:38,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:38,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:38,835 INFO L124 PetriNetUnfolderBase]: 409/727 cut-off events. [2024-06-03 22:19:38,836 INFO L125 PetriNetUnfolderBase]: For 47356/47356 co-relation queries the response was YES. [2024-06-03 22:19:38,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4571 conditions, 727 events. 409/727 cut-off events. For 47356/47356 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3253 event pairs, 49 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 4480. Up to 697 conditions per place. [2024-06-03 22:19:38,841 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 160 selfloop transitions, 14 changer transitions 0/176 dead transitions. [2024-06-03 22:19:38,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 176 transitions, 1960 flow [2024-06-03 22:19:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-03 22:19:38,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090277777777778 [2024-06-03 22:19:38,843 INFO L175 Difference]: Start difference. First operand has 192 places, 166 transitions, 1590 flow. Second operand 9 states and 89 transitions. [2024-06-03 22:19:38,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 176 transitions, 1960 flow [2024-06-03 22:19:38,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 176 transitions, 1894 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-03 22:19:38,937 INFO L231 Difference]: Finished difference. Result has 192 places, 166 transitions, 1556 flow [2024-06-03 22:19:38,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1556, PETRI_PLACES=192, PETRI_TRANSITIONS=166} [2024-06-03 22:19:38,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-03 22:19:38,938 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 166 transitions, 1556 flow [2024-06-03 22:19:38,938 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) [2024-06-03 22:19:38,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:38,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:38,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 22:19:38,938 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)] === [2024-06-03 22:19:38,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 653174946, now seen corresponding path program 9 times [2024-06-03 22:19:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:38,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697301656] [2024-06-03 22:19:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:38,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:43,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697301656] [2024-06-03 22:19:43,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697301656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:43,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:43,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:43,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605351062] [2024-06-03 22:19:43,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:43,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:43,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:43,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:43,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:43,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 166 transitions, 1556 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) [2024-06-03 22:19:43,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:43,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:43,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:44,350 INFO L124 PetriNetUnfolderBase]: 407/724 cut-off events. [2024-06-03 22:19:44,350 INFO L125 PetriNetUnfolderBase]: For 44633/44633 co-relation queries the response was YES. [2024-06-03 22:19:44,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4465 conditions, 724 events. 407/724 cut-off events. For 44633/44633 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3233 event pairs, 50 based on Foata normal form. 1/725 useless extension candidates. Maximal degree in co-relation 4373. Up to 688 conditions per place. [2024-06-03 22:19:44,354 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 153 selfloop transitions, 20 changer transitions 0/175 dead transitions. [2024-06-03 22:19:44,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 175 transitions, 1922 flow [2024-06-03 22:19:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 22:19:44,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-03 22:19:44,355 INFO L175 Difference]: Start difference. First operand has 192 places, 166 transitions, 1556 flow. Second operand 9 states and 92 transitions. [2024-06-03 22:19:44,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 175 transitions, 1922 flow [2024-06-03 22:19:44,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 175 transitions, 1783 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-03 22:19:44,459 INFO L231 Difference]: Finished difference. Result has 189 places, 166 transitions, 1462 flow [2024-06-03 22:19:44,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1462, PETRI_PLACES=189, PETRI_TRANSITIONS=166} [2024-06-03 22:19:44,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-03 22:19:44,460 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 166 transitions, 1462 flow [2024-06-03 22:19:44,460 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) [2024-06-03 22:19:44,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:44,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:44,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 22:19:44,460 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)] === [2024-06-03 22:19:44,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1338834570, now seen corresponding path program 1 times [2024-06-03 22:19:44,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:44,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192170127] [2024-06-03 22:19:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:44,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:48,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:48,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192170127] [2024-06-03 22:19:48,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192170127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:48,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:48,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:48,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934298358] [2024-06-03 22:19:48,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:48,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:48,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:48,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:48,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:48,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:48,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 166 transitions, 1462 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) [2024-06-03 22:19:48,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:48,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:48,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:48,909 INFO L124 PetriNetUnfolderBase]: 411/732 cut-off events. [2024-06-03 22:19:48,909 INFO L125 PetriNetUnfolderBase]: For 47725/47725 co-relation queries the response was YES. [2024-06-03 22:19:48,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4408 conditions, 732 events. 411/732 cut-off events. For 47725/47725 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3290 event pairs, 33 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 4316. Up to 372 conditions per place. [2024-06-03 22:19:48,915 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 129 selfloop transitions, 53 changer transitions 0/184 dead transitions. [2024-06-03 22:19:48,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 184 transitions, 2000 flow [2024-06-03 22:19:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 22:19:48,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 22:19:48,916 INFO L175 Difference]: Start difference. First operand has 189 places, 166 transitions, 1462 flow. Second operand 9 states and 99 transitions. [2024-06-03 22:19:48,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 184 transitions, 2000 flow [2024-06-03 22:19:49,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 184 transitions, 1885 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-03 22:19:49,012 INFO L231 Difference]: Finished difference. Result has 189 places, 167 transitions, 1463 flow [2024-06-03 22:19:49,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1463, PETRI_PLACES=189, PETRI_TRANSITIONS=167} [2024-06-03 22:19:49,012 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-03 22:19:49,012 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 167 transitions, 1463 flow [2024-06-03 22:19:49,012 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) [2024-06-03 22:19:49,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:49,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:49,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 22:19:49,013 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)] === [2024-06-03 22:19:49,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:49,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1396927020, now seen corresponding path program 2 times [2024-06-03 22:19:49,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:49,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778328009] [2024-06-03 22:19:49,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:49,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:53,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:53,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778328009] [2024-06-03 22:19:53,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778328009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:53,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:53,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:53,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758433937] [2024-06-03 22:19:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:53,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:53,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:53,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:53,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:53,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:53,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 167 transitions, 1463 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) [2024-06-03 22:19:53,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:53,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:53,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:53,869 INFO L124 PetriNetUnfolderBase]: 422/753 cut-off events. [2024-06-03 22:19:53,870 INFO L125 PetriNetUnfolderBase]: For 53416/53416 co-relation queries the response was YES. [2024-06-03 22:19:53,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 753 events. 422/753 cut-off events. For 53416/53416 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3434 event pairs, 52 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 4531. Up to 505 conditions per place. [2024-06-03 22:19:53,875 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 59 changer transitions 0/185 dead transitions. [2024-06-03 22:19:53,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 185 transitions, 2013 flow [2024-06-03 22:19:53,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-03 22:19:53,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-03 22:19:53,877 INFO L175 Difference]: Start difference. First operand has 189 places, 167 transitions, 1463 flow. Second operand 9 states and 106 transitions. [2024-06-03 22:19:53,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 185 transitions, 2013 flow [2024-06-03 22:19:53,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 185 transitions, 1919 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 22:19:53,986 INFO L231 Difference]: Finished difference. Result has 192 places, 169 transitions, 1509 flow [2024-06-03 22:19:53,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1509, PETRI_PLACES=192, PETRI_TRANSITIONS=169} [2024-06-03 22:19:53,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-03 22:19:53,987 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 169 transitions, 1509 flow [2024-06-03 22:19:53,987 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) [2024-06-03 22:19:53,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:53,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:53,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 22:19:53,987 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)] === [2024-06-03 22:19:53,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:53,988 INFO L85 PathProgramCache]: Analyzing trace with hash -321301366, now seen corresponding path program 3 times [2024-06-03 22:19:53,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:53,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147378675] [2024-06-03 22:19:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:53,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:19:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:19:58,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:19:58,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147378675] [2024-06-03 22:19:58,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147378675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:19:58,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:19:58,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:19:58,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969749938] [2024-06-03 22:19:58,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:19:58,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:19:58,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:19:58,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:19:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:19:58,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:19:58,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 169 transitions, 1509 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) [2024-06-03 22:19:58,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:19:58,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:19:58,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:19:58,506 INFO L124 PetriNetUnfolderBase]: 433/774 cut-off events. [2024-06-03 22:19:58,506 INFO L125 PetriNetUnfolderBase]: For 59748/59748 co-relation queries the response was YES. [2024-06-03 22:19:58,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4879 conditions, 774 events. 433/774 cut-off events. For 59748/59748 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3588 event pairs, 55 based on Foata normal form. 2/776 useless extension candidates. Maximal degree in co-relation 4786. Up to 568 conditions per place. [2024-06-03 22:19:58,512 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 62 changer transitions 0/186 dead transitions. [2024-06-03 22:19:58,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 186 transitions, 2059 flow [2024-06-03 22:19:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:19:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:19:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 22:19:58,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 22:19:58,513 INFO L175 Difference]: Start difference. First operand has 192 places, 169 transitions, 1509 flow. Second operand 9 states and 108 transitions. [2024-06-03 22:19:58,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 186 transitions, 2059 flow [2024-06-03 22:19:58,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 186 transitions, 1987 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 22:19:58,641 INFO L231 Difference]: Finished difference. Result has 196 places, 171 transitions, 1581 flow [2024-06-03 22:19:58,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1581, PETRI_PLACES=196, PETRI_TRANSITIONS=171} [2024-06-03 22:19:58,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-03 22:19:58,642 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 171 transitions, 1581 flow [2024-06-03 22:19:58,642 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) [2024-06-03 22:19:58,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:19:58,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:19:58,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 22:19:58,643 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)] === [2024-06-03 22:19:58,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:19:58,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1794241590, now seen corresponding path program 4 times [2024-06-03 22:19:58,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:19:58,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716719338] [2024-06-03 22:19:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:19:58,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:19:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:02,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716719338] [2024-06-03 22:20:02,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716719338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:02,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:02,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:20:02,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566704019] [2024-06-03 22:20:02,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:02,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:20:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:02,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:20:02,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:20:02,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:02,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 171 transitions, 1581 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) [2024-06-03 22:20:02,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:02,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:02,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:03,130 INFO L124 PetriNetUnfolderBase]: 430/769 cut-off events. [2024-06-03 22:20:03,130 INFO L125 PetriNetUnfolderBase]: For 56948/56948 co-relation queries the response was YES. [2024-06-03 22:20:03,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4862 conditions, 769 events. 430/769 cut-off events. For 56948/56948 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3568 event pairs, 56 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 4767. Up to 580 conditions per place. [2024-06-03 22:20:03,136 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 62 changer transitions 0/184 dead transitions. [2024-06-03 22:20:03,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 184 transitions, 1975 flow [2024-06-03 22:20:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:20:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:20:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 22:20:03,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 22:20:03,141 INFO L175 Difference]: Start difference. First operand has 196 places, 171 transitions, 1581 flow. Second operand 9 states and 107 transitions. [2024-06-03 22:20:03,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 184 transitions, 1975 flow [2024-06-03 22:20:03,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 184 transitions, 1896 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 22:20:03,258 INFO L231 Difference]: Finished difference. Result has 200 places, 171 transitions, 1630 flow [2024-06-03 22:20:03,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1630, PETRI_PLACES=200, PETRI_TRANSITIONS=171} [2024-06-03 22:20:03,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-03 22:20:03,258 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 171 transitions, 1630 flow [2024-06-03 22:20:03,259 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) [2024-06-03 22:20:03,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:03,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:03,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 22:20:03,259 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)] === [2024-06-03 22:20:03,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1079566550, now seen corresponding path program 1 times [2024-06-03 22:20:03,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:03,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607142123] [2024-06-03 22:20:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:03,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:09,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:09,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607142123] [2024-06-03 22:20:09,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607142123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:09,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:09,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:20:09,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784708327] [2024-06-03 22:20:09,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:09,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:20:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:20:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:20:09,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:09,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 171 transitions, 1630 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) [2024-06-03 22:20:09,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:09,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:09,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:09,730 INFO L124 PetriNetUnfolderBase]: 436/779 cut-off events. [2024-06-03 22:20:09,730 INFO L125 PetriNetUnfolderBase]: For 58590/58590 co-relation queries the response was YES. [2024-06-03 22:20:09,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 779 events. 436/779 cut-off events. For 58590/58590 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3626 event pairs, 50 based on Foata normal form. 2/781 useless extension candidates. Maximal degree in co-relation 4922. Up to 388 conditions per place. [2024-06-03 22:20:09,740 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 68 changer transitions 0/193 dead transitions. [2024-06-03 22:20:09,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 193 transitions, 2348 flow [2024-06-03 22:20:09,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:20:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:20:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-03 22:20:09,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-03 22:20:09,742 INFO L175 Difference]: Start difference. First operand has 200 places, 171 transitions, 1630 flow. Second operand 10 states and 127 transitions. [2024-06-03 22:20:09,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 193 transitions, 2348 flow [2024-06-03 22:20:09,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 193 transitions, 2222 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-03 22:20:09,870 INFO L231 Difference]: Finished difference. Result has 202 places, 173 transitions, 1661 flow [2024-06-03 22:20:09,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1661, PETRI_PLACES=202, PETRI_TRANSITIONS=173} [2024-06-03 22:20:09,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-03 22:20:09,871 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 173 transitions, 1661 flow [2024-06-03 22:20:09,872 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) [2024-06-03 22:20:09,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:09,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:09,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 22:20:09,872 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)] === [2024-06-03 22:20:09,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:09,872 INFO L85 PathProgramCache]: Analyzing trace with hash 897846336, now seen corresponding path program 2 times [2024-06-03 22:20:09,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:09,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934797425] [2024-06-03 22:20:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:09,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:14,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:14,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934797425] [2024-06-03 22:20:14,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934797425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:14,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:14,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:20:14,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089612857] [2024-06-03 22:20:14,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:14,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:20:14,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:14,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:20:14,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:20:15,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:15,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 173 transitions, 1661 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) [2024-06-03 22:20:15,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:15,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:15,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:15,539 INFO L124 PetriNetUnfolderBase]: 442/789 cut-off events. [2024-06-03 22:20:15,539 INFO L125 PetriNetUnfolderBase]: For 60430/60430 co-relation queries the response was YES. [2024-06-03 22:20:15,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5126 conditions, 789 events. 442/789 cut-off events. For 60430/60430 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3678 event pairs, 49 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 5028. Up to 548 conditions per place. [2024-06-03 22:20:15,545 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 61 changer transitions 0/195 dead transitions. [2024-06-03 22:20:15,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 195 transitions, 2121 flow [2024-06-03 22:20:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:20:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:20:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 22:20:15,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 22:20:15,546 INFO L175 Difference]: Start difference. First operand has 202 places, 173 transitions, 1661 flow. Second operand 10 states and 118 transitions. [2024-06-03 22:20:15,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 195 transitions, 2121 flow [2024-06-03 22:20:15,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 195 transitions, 1971 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 22:20:15,671 INFO L231 Difference]: Finished difference. Result has 206 places, 177 transitions, 1731 flow [2024-06-03 22:20:15,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1731, PETRI_PLACES=206, PETRI_TRANSITIONS=177} [2024-06-03 22:20:15,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-03 22:20:15,671 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 177 transitions, 1731 flow [2024-06-03 22:20:15,671 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) [2024-06-03 22:20:15,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:15,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 22:20:15,672 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)] === [2024-06-03 22:20:15,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash 897846150, now seen corresponding path program 5 times [2024-06-03 22:20:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124203218] [2024-06-03 22:20:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:19,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:19,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124203218] [2024-06-03 22:20:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124203218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:19,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:19,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:20:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303589893] [2024-06-03 22:20:19,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:19,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:20:19,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:20:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:20:20,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:20,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 177 transitions, 1731 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) [2024-06-03 22:20:20,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:20,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:20,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:20,484 INFO L124 PetriNetUnfolderBase]: 446/797 cut-off events. [2024-06-03 22:20:20,484 INFO L125 PetriNetUnfolderBase]: For 62181/62181 co-relation queries the response was YES. [2024-06-03 22:20:20,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5283 conditions, 797 events. 446/797 cut-off events. For 62181/62181 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3725 event pairs, 58 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 5182. Up to 680 conditions per place. [2024-06-03 22:20:20,490 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 40 changer transitions 0/192 dead transitions. [2024-06-03 22:20:20,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 192 transitions, 2152 flow [2024-06-03 22:20:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:20:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:20:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 22:20:20,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-03 22:20:20,492 INFO L175 Difference]: Start difference. First operand has 206 places, 177 transitions, 1731 flow. Second operand 10 states and 109 transitions. [2024-06-03 22:20:20,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 192 transitions, 2152 flow [2024-06-03 22:20:20,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 192 transitions, 2078 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 22:20:20,613 INFO L231 Difference]: Finished difference. Result has 210 places, 178 transitions, 1752 flow [2024-06-03 22:20:20,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=210, PETRI_TRANSITIONS=178} [2024-06-03 22:20:20,614 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-03 22:20:20,614 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 178 transitions, 1752 flow [2024-06-03 22:20:20,614 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) [2024-06-03 22:20:20,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:20,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:20,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 22:20:20,615 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)] === [2024-06-03 22:20:20,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:20,615 INFO L85 PathProgramCache]: Analyzing trace with hash -206005360, now seen corresponding path program 3 times [2024-06-03 22:20:20,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:20,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167234605] [2024-06-03 22:20:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:20,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:25,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:25,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167234605] [2024-06-03 22:20:25,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167234605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:25,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:25,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:20:25,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024712615] [2024-06-03 22:20:25,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:25,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:20:25,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:20:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:20:25,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:25,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 178 transitions, 1752 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) [2024-06-03 22:20:25,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:25,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:25,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:25,679 INFO L124 PetriNetUnfolderBase]: 442/791 cut-off events. [2024-06-03 22:20:25,679 INFO L125 PetriNetUnfolderBase]: For 58824/58824 co-relation queries the response was YES. [2024-06-03 22:20:25,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5100 conditions, 791 events. 442/791 cut-off events. For 58824/58824 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3695 event pairs, 49 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 4998. Up to 535 conditions per place. [2024-06-03 22:20:25,685 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 66 changer transitions 0/195 dead transitions. [2024-06-03 22:20:25,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 195 transitions, 2176 flow [2024-06-03 22:20:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:20:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:20:25,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 22:20:25,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 22:20:25,686 INFO L175 Difference]: Start difference. First operand has 210 places, 178 transitions, 1752 flow. Second operand 9 states and 112 transitions. [2024-06-03 22:20:25,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 195 transitions, 2176 flow [2024-06-03 22:20:25,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 195 transitions, 2090 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 22:20:25,799 INFO L231 Difference]: Finished difference. Result has 211 places, 178 transitions, 1803 flow [2024-06-03 22:20:25,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1803, PETRI_PLACES=211, PETRI_TRANSITIONS=178} [2024-06-03 22:20:25,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-03 22:20:25,799 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 178 transitions, 1803 flow [2024-06-03 22:20:25,799 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) [2024-06-03 22:20:25,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:25,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:25,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 22:20:25,800 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)] === [2024-06-03 22:20:25,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:25,800 INFO L85 PathProgramCache]: Analyzing trace with hash -206005546, now seen corresponding path program 6 times [2024-06-03 22:20:25,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:25,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136783952] [2024-06-03 22:20:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:25,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:30,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:30,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136783952] [2024-06-03 22:20:30,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136783952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:30,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:30,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:20:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578066012] [2024-06-03 22:20:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:20:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:20:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:20:30,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:30,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 178 transitions, 1803 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) [2024-06-03 22:20:30,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:30,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:30,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:30,746 INFO L124 PetriNetUnfolderBase]: 446/799 cut-off events. [2024-06-03 22:20:30,746 INFO L125 PetriNetUnfolderBase]: For 60611/60611 co-relation queries the response was YES. [2024-06-03 22:20:30,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5225 conditions, 799 events. 446/799 cut-off events. For 60611/60611 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3757 event pairs, 57 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 5122. Up to 673 conditions per place. [2024-06-03 22:20:30,753 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 44 changer transitions 0/192 dead transitions. [2024-06-03 22:20:30,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 192 transitions, 2224 flow [2024-06-03 22:20:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:20:30,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:20:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 22:20:30,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-03 22:20:30,754 INFO L175 Difference]: Start difference. First operand has 211 places, 178 transitions, 1803 flow. Second operand 9 states and 103 transitions. [2024-06-03 22:20:30,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 192 transitions, 2224 flow [2024-06-03 22:20:30,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 192 transitions, 2071 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 22:20:30,873 INFO L231 Difference]: Finished difference. Result has 212 places, 179 transitions, 1755 flow [2024-06-03 22:20:30,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1755, PETRI_PLACES=212, PETRI_TRANSITIONS=179} [2024-06-03 22:20:30,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-03 22:20:30,874 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 179 transitions, 1755 flow [2024-06-03 22:20:30,874 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) [2024-06-03 22:20:30,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:30,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:30,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 22:20:30,875 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)] === [2024-06-03 22:20:30,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:30,875 INFO L85 PathProgramCache]: Analyzing trace with hash -206010196, now seen corresponding path program 7 times [2024-06-03 22:20:30,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:30,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190417600] [2024-06-03 22:20:30,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:30,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:35,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190417600] [2024-06-03 22:20:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190417600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:35,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:35,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:20:35,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114882093] [2024-06-03 22:20:35,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:35,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:20:35,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:20:35,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:20:35,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:35,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 179 transitions, 1755 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) [2024-06-03 22:20:35,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:35,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:35,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:35,643 INFO L124 PetriNetUnfolderBase]: 443/794 cut-off events. [2024-06-03 22:20:35,643 INFO L125 PetriNetUnfolderBase]: For 56492/56492 co-relation queries the response was YES. [2024-06-03 22:20:35,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 794 events. 443/794 cut-off events. For 56492/56492 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3728 event pairs, 54 based on Foata normal form. 2/796 useless extension candidates. Maximal degree in co-relation 4892. Up to 642 conditions per place. [2024-06-03 22:20:35,650 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 144 selfloop transitions, 47 changer transitions 0/193 dead transitions. [2024-06-03 22:20:35,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 193 transitions, 2169 flow [2024-06-03 22:20:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:20:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:20:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 22:20:35,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 22:20:35,651 INFO L175 Difference]: Start difference. First operand has 212 places, 179 transitions, 1755 flow. Second operand 9 states and 105 transitions. [2024-06-03 22:20:35,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 193 transitions, 2169 flow [2024-06-03 22:20:35,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 193 transitions, 2075 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 22:20:35,791 INFO L231 Difference]: Finished difference. Result has 214 places, 179 transitions, 1759 flow [2024-06-03 22:20:35,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1759, PETRI_PLACES=214, PETRI_TRANSITIONS=179} [2024-06-03 22:20:35,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-03 22:20:35,791 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 179 transitions, 1759 flow [2024-06-03 22:20:35,792 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) [2024-06-03 22:20:35,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:35,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:35,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 22:20:35,792 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)] === [2024-06-03 22:20:35,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1084929492, now seen corresponding path program 8 times [2024-06-03 22:20:35,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:35,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228877543] [2024-06-03 22:20:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:35,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:39,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:39,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228877543] [2024-06-03 22:20:39,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228877543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:39,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:39,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:20:39,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910520309] [2024-06-03 22:20:39,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:39,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:20:39,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:39,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:20:39,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:20:39,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:39,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 179 transitions, 1759 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) [2024-06-03 22:20:39,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:39,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:39,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:40,309 INFO L124 PetriNetUnfolderBase]: 447/802 cut-off events. [2024-06-03 22:20:40,309 INFO L125 PetriNetUnfolderBase]: For 58057/58057 co-relation queries the response was YES. [2024-06-03 22:20:40,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5043 conditions, 802 events. 447/802 cut-off events. For 58057/58057 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3799 event pairs, 34 based on Foata normal form. 2/804 useless extension candidates. Maximal degree in co-relation 4938. Up to 516 conditions per place. [2024-06-03 22:20:40,316 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 132 selfloop transitions, 65 changer transitions 0/199 dead transitions. [2024-06-03 22:20:40,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 199 transitions, 2354 flow [2024-06-03 22:20:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:20:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:20:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 22:20:40,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-03 22:20:40,317 INFO L175 Difference]: Start difference. First operand has 214 places, 179 transitions, 1759 flow. Second operand 9 states and 109 transitions. [2024-06-03 22:20:40,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 199 transitions, 2354 flow [2024-06-03 22:20:40,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 199 transitions, 2207 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 22:20:40,439 INFO L231 Difference]: Finished difference. Result has 215 places, 180 transitions, 1753 flow [2024-06-03 22:20:40,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1753, PETRI_PLACES=215, PETRI_TRANSITIONS=180} [2024-06-03 22:20:40,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-03 22:20:40,439 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 180 transitions, 1753 flow [2024-06-03 22:20:40,440 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) [2024-06-03 22:20:40,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:40,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:40,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 22:20:40,440 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)] === [2024-06-03 22:20:40,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:40,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1084809522, now seen corresponding path program 9 times [2024-06-03 22:20:40,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:40,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136771358] [2024-06-03 22:20:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:40,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:44,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:44,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136771358] [2024-06-03 22:20:44,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136771358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:44,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:44,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:20:44,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27920248] [2024-06-03 22:20:44,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:44,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:20:44,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:44,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:20:44,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:20:44,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:44,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 180 transitions, 1753 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) [2024-06-03 22:20:44,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:44,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:44,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:45,032 INFO L124 PetriNetUnfolderBase]: 451/810 cut-off events. [2024-06-03 22:20:45,032 INFO L125 PetriNetUnfolderBase]: For 59597/59597 co-relation queries the response was YES. [2024-06-03 22:20:45,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 810 events. 451/810 cut-off events. For 59597/59597 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3823 event pairs, 58 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 4920. Up to 621 conditions per place. [2024-06-03 22:20:45,039 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 67 changer transitions 0/197 dead transitions. [2024-06-03 22:20:45,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 197 transitions, 2190 flow [2024-06-03 22:20:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:20:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:20:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 22:20:45,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 22:20:45,041 INFO L175 Difference]: Start difference. First operand has 215 places, 180 transitions, 1753 flow. Second operand 9 states and 108 transitions. [2024-06-03 22:20:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 197 transitions, 2190 flow [2024-06-03 22:20:45,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 197 transitions, 1997 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 22:20:45,184 INFO L231 Difference]: Finished difference. Result has 216 places, 181 transitions, 1709 flow [2024-06-03 22:20:45,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1709, PETRI_PLACES=216, PETRI_TRANSITIONS=181} [2024-06-03 22:20:45,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-03 22:20:45,185 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 181 transitions, 1709 flow [2024-06-03 22:20:45,185 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) [2024-06-03 22:20:45,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:45,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:45,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 22:20:45,185 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)] === [2024-06-03 22:20:45,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1084814172, now seen corresponding path program 10 times [2024-06-03 22:20:45,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:45,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927896026] [2024-06-03 22:20:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:45,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:49,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:49,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:49,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927896026] [2024-06-03 22:20:49,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927896026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:49,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:49,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:20:49,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510619636] [2024-06-03 22:20:49,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:49,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:20:49,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:20:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:20:49,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:49,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 181 transitions, 1709 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) [2024-06-03 22:20:49,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:49,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:49,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:49,698 INFO L124 PetriNetUnfolderBase]: 455/818 cut-off events. [2024-06-03 22:20:49,699 INFO L125 PetriNetUnfolderBase]: For 60947/60947 co-relation queries the response was YES. [2024-06-03 22:20:49,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4938 conditions, 818 events. 455/818 cut-off events. For 60947/60947 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3898 event pairs, 58 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 4833. Up to 615 conditions per place. [2024-06-03 22:20:49,705 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 67 changer transitions 0/199 dead transitions. [2024-06-03 22:20:49,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 199 transitions, 2150 flow [2024-06-03 22:20:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:20:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:20:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 22:20:49,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-03 22:20:49,706 INFO L175 Difference]: Start difference. First operand has 216 places, 181 transitions, 1709 flow. Second operand 9 states and 109 transitions. [2024-06-03 22:20:49,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 199 transitions, 2150 flow [2024-06-03 22:20:49,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 199 transitions, 2016 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 22:20:49,838 INFO L231 Difference]: Finished difference. Result has 218 places, 182 transitions, 1722 flow [2024-06-03 22:20:49,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1722, PETRI_PLACES=218, PETRI_TRANSITIONS=182} [2024-06-03 22:20:49,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-03 22:20:49,839 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 182 transitions, 1722 flow [2024-06-03 22:20:49,839 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) [2024-06-03 22:20:49,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:49,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:49,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 22:20:49,839 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)] === [2024-06-03 22:20:49,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1080161196, now seen corresponding path program 4 times [2024-06-03 22:20:49,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:49,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265763706] [2024-06-03 22:20:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:20:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:20:55,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:20:55,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265763706] [2024-06-03 22:20:55,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265763706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:20:55,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:20:55,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:20:55,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608288981] [2024-06-03 22:20:55,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:20:55,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:20:55,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:20:55,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:20:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:20:55,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:20:55,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 182 transitions, 1722 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) [2024-06-03 22:20:55,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:20:55,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:20:55,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:20:56,370 INFO L124 PetriNetUnfolderBase]: 461/828 cut-off events. [2024-06-03 22:20:56,370 INFO L125 PetriNetUnfolderBase]: For 62721/62721 co-relation queries the response was YES. [2024-06-03 22:20:56,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 828 events. 461/828 cut-off events. For 62721/62721 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3960 event pairs, 50 based on Foata normal form. 2/830 useless extension candidates. Maximal degree in co-relation 4913. Up to 432 conditions per place. [2024-06-03 22:20:56,376 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 83 changer transitions 0/206 dead transitions. [2024-06-03 22:20:56,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 206 transitions, 2366 flow [2024-06-03 22:20:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:20:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:20:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-03 22:20:56,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-03 22:20:56,378 INFO L175 Difference]: Start difference. First operand has 218 places, 182 transitions, 1722 flow. Second operand 10 states and 126 transitions. [2024-06-03 22:20:56,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 206 transitions, 2366 flow [2024-06-03 22:20:56,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 206 transitions, 2230 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 22:20:56,523 INFO L231 Difference]: Finished difference. Result has 221 places, 184 transitions, 1787 flow [2024-06-03 22:20:56,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1787, PETRI_PLACES=221, PETRI_TRANSITIONS=184} [2024-06-03 22:20:56,524 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-03 22:20:56,524 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 184 transitions, 1787 flow [2024-06-03 22:20:56,524 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) [2024-06-03 22:20:56,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:20:56,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:20:56,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 22:20:56,524 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)] === [2024-06-03 22:20:56,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:20:56,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1080167892, now seen corresponding path program 11 times [2024-06-03 22:20:56,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:20:56,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116051858] [2024-06-03 22:20:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:20:56,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:20:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:01,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:01,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116051858] [2024-06-03 22:21:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116051858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:01,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:21:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704589100] [2024-06-03 22:21:01,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:01,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:21:01,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:01,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:21:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:21:01,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:21:01,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 184 transitions, 1787 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) [2024-06-03 22:21:01,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:21:01,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:21:01,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:21:01,865 INFO L124 PetriNetUnfolderBase]: 465/836 cut-off events. [2024-06-03 22:21:01,865 INFO L125 PetriNetUnfolderBase]: For 64519/64519 co-relation queries the response was YES. [2024-06-03 22:21:01,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 836 events. 465/836 cut-off events. For 64519/64519 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4010 event pairs, 62 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 5018. Up to 641 conditions per place. [2024-06-03 22:21:01,872 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 132 selfloop transitions, 68 changer transitions 0/202 dead transitions. [2024-06-03 22:21:01,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 202 transitions, 2236 flow [2024-06-03 22:21:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:21:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:21:01,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 22:21:01,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 22:21:01,874 INFO L175 Difference]: Start difference. First operand has 221 places, 184 transitions, 1787 flow. Second operand 10 states and 116 transitions. [2024-06-03 22:21:01,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 202 transitions, 2236 flow [2024-06-03 22:21:02,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 202 transitions, 2050 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 22:21:02,010 INFO L231 Difference]: Finished difference. Result has 223 places, 185 transitions, 1754 flow [2024-06-03 22:21:02,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1754, PETRI_PLACES=223, PETRI_TRANSITIONS=185} [2024-06-03 22:21:02,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-03 22:21:02,010 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 185 transitions, 1754 flow [2024-06-03 22:21:02,011 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) [2024-06-03 22:21:02,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:21:02,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:21:02,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 22:21:02,011 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)] === [2024-06-03 22:21:02,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:21:02,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1080345522, now seen corresponding path program 12 times [2024-06-03 22:21:02,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:21:02,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694330552] [2024-06-03 22:21:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:21:02,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:21:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:06,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:06,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694330552] [2024-06-03 22:21:06,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694330552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:06,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:06,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:21:06,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382550255] [2024-06-03 22:21:06,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:06,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:21:06,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:06,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:21:06,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:21:06,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:21:06,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 185 transitions, 1754 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) [2024-06-03 22:21:06,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:21:06,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:21:06,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:21:06,917 INFO L124 PetriNetUnfolderBase]: 469/844 cut-off events. [2024-06-03 22:21:06,917 INFO L125 PetriNetUnfolderBase]: For 65895/65895 co-relation queries the response was YES. [2024-06-03 22:21:06,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 844 events. 469/844 cut-off events. For 65895/65895 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4060 event pairs, 38 based on Foata normal form. 2/846 useless extension candidates. Maximal degree in co-relation 5001. Up to 607 conditions per place. [2024-06-03 22:21:06,924 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 70 changer transitions 0/208 dead transitions. [2024-06-03 22:21:06,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 208 transitions, 2389 flow [2024-06-03 22:21:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:21:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:21:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 22:21:06,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-03 22:21:06,925 INFO L175 Difference]: Start difference. First operand has 223 places, 185 transitions, 1754 flow. Second operand 10 states and 122 transitions. [2024-06-03 22:21:06,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 208 transitions, 2389 flow [2024-06-03 22:21:07,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 208 transitions, 2245 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-03 22:21:07,076 INFO L231 Difference]: Finished difference. Result has 225 places, 186 transitions, 1769 flow [2024-06-03 22:21:07,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1769, PETRI_PLACES=225, PETRI_TRANSITIONS=186} [2024-06-03 22:21:07,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-03 22:21:07,077 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 186 transitions, 1769 flow [2024-06-03 22:21:07,077 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) [2024-06-03 22:21:07,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:21:07,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:21:07,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 22:21:07,078 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)] === [2024-06-03 22:21:07,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:21:07,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1080167706, now seen corresponding path program 5 times [2024-06-03 22:21:07,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:21:07,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469926198] [2024-06-03 22:21:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:21:07,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:21:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:12,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:12,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469926198] [2024-06-03 22:21:12,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469926198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:12,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:12,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:21:12,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283110355] [2024-06-03 22:21:12,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:12,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:21:12,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:12,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:21:12,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:21:12,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:21:12,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 186 transitions, 1769 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) [2024-06-03 22:21:12,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:21:12,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:21:12,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:21:12,879 INFO L124 PetriNetUnfolderBase]: 475/854 cut-off events. [2024-06-03 22:21:12,880 INFO L125 PetriNetUnfolderBase]: For 66020/66020 co-relation queries the response was YES. [2024-06-03 22:21:12,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 854 events. 475/854 cut-off events. For 66020/66020 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4129 event pairs, 50 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5064. Up to 613 conditions per place. [2024-06-03 22:21:12,885 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 71 changer transitions 0/210 dead transitions. [2024-06-03 22:21:12,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 210 transitions, 2265 flow [2024-06-03 22:21:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:21:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:21:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 22:21:12,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 22:21:12,886 INFO L175 Difference]: Start difference. First operand has 225 places, 186 transitions, 1769 flow. Second operand 10 states and 123 transitions. [2024-06-03 22:21:12,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 210 transitions, 2265 flow [2024-06-03 22:21:13,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 210 transitions, 2117 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 22:21:13,040 INFO L231 Difference]: Finished difference. Result has 226 places, 188 transitions, 1802 flow [2024-06-03 22:21:13,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1802, PETRI_PLACES=226, PETRI_TRANSITIONS=188} [2024-06-03 22:21:13,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-03 22:21:13,041 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 188 transitions, 1802 flow [2024-06-03 22:21:13,041 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) [2024-06-03 22:21:13,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:21:13,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:21:13,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 22:21:13,042 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)] === [2024-06-03 22:21:13,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:21:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash 23337844, now seen corresponding path program 13 times [2024-06-03 22:21:13,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:21:13,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988489932] [2024-06-03 22:21:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:21:13,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:21:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:17,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:17,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988489932] [2024-06-03 22:21:17,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988489932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:17,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:17,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 22:21:17,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047540021] [2024-06-03 22:21:17,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:17,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 22:21:17,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:17,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 22:21:17,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-03 22:21:17,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:21:17,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 188 transitions, 1802 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) [2024-06-03 22:21:17,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:21:17,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:21:17,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:21:17,809 INFO L124 PetriNetUnfolderBase]: 479/862 cut-off events. [2024-06-03 22:21:17,809 INFO L125 PetriNetUnfolderBase]: For 67860/67860 co-relation queries the response was YES. [2024-06-03 22:21:17,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 862 events. 479/862 cut-off events. For 67860/67860 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4182 event pairs, 62 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 5130. Up to 702 conditions per place. [2024-06-03 22:21:17,816 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 65 changer transitions 0/208 dead transitions. [2024-06-03 22:21:17,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 208 transitions, 2269 flow [2024-06-03 22:21:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 22:21:17,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 22:21:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 22:21:17,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-03 22:21:17,818 INFO L175 Difference]: Start difference. First operand has 226 places, 188 transitions, 1802 flow. Second operand 9 states and 110 transitions. [2024-06-03 22:21:17,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 208 transitions, 2269 flow [2024-06-03 22:21:17,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 208 transitions, 2069 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 22:21:17,963 INFO L231 Difference]: Finished difference. Result has 227 places, 189 transitions, 1747 flow [2024-06-03 22:21:17,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1747, PETRI_PLACES=227, PETRI_TRANSITIONS=189} [2024-06-03 22:21:17,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-03 22:21:17,964 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 189 transitions, 1747 flow [2024-06-03 22:21:17,964 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) [2024-06-03 22:21:17,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:21:17,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:21:17,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 22:21:17,964 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)] === [2024-06-03 22:21:17,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:21:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1080340686, now seen corresponding path program 6 times [2024-06-03 22:21:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:21:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138378108] [2024-06-03 22:21:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:21:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:21:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:23,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:23,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138378108] [2024-06-03 22:21:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138378108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:23,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:23,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:21:23,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226748285] [2024-06-03 22:21:23,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:23,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:21:23,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:23,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:21:23,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:21:23,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:21:23,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 189 transitions, 1747 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) [2024-06-03 22:21:23,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:21:23,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:21:23,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:21:24,378 INFO L124 PetriNetUnfolderBase]: 485/872 cut-off events. [2024-06-03 22:21:24,378 INFO L125 PetriNetUnfolderBase]: For 69227/69227 co-relation queries the response was YES. [2024-06-03 22:21:24,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5236 conditions, 872 events. 485/872 cut-off events. For 69227/69227 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4251 event pairs, 50 based on Foata normal form. 2/874 useless extension candidates. Maximal degree in co-relation 5126. Up to 529 conditions per place. [2024-06-03 22:21:24,386 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 89 changer transitions 0/217 dead transitions. [2024-06-03 22:21:24,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 217 transitions, 2435 flow [2024-06-03 22:21:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:21:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:21:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-03 22:21:24,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-03 22:21:24,387 INFO L175 Difference]: Start difference. First operand has 227 places, 189 transitions, 1747 flow. Second operand 10 states and 131 transitions. [2024-06-03 22:21:24,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 217 transitions, 2435 flow [2024-06-03 22:21:24,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 217 transitions, 2301 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 22:21:24,546 INFO L231 Difference]: Finished difference. Result has 230 places, 191 transitions, 1830 flow [2024-06-03 22:21:24,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1830, PETRI_PLACES=230, PETRI_TRANSITIONS=191} [2024-06-03 22:21:24,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-03 22:21:24,546 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 191 transitions, 1830 flow [2024-06-03 22:21:24,547 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) [2024-06-03 22:21:24,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:21:24,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:21:24,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 22:21:24,547 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)] === [2024-06-03 22:21:24,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:21:24,547 INFO L85 PathProgramCache]: Analyzing trace with hash -913934112, now seen corresponding path program 14 times [2024-06-03 22:21:24,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:21:24,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784198929] [2024-06-03 22:21:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:21:24,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:21:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:29,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:29,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784198929] [2024-06-03 22:21:29,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784198929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:29,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:29,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:21:29,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455268376] [2024-06-03 22:21:29,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:29,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:21:29,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:21:29,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:21:29,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:21:29,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 191 transitions, 1830 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) [2024-06-03 22:21:29,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:21:29,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:21:29,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:21:29,912 INFO L124 PetriNetUnfolderBase]: 489/880 cut-off events. [2024-06-03 22:21:29,912 INFO L125 PetriNetUnfolderBase]: For 71180/71180 co-relation queries the response was YES. [2024-06-03 22:21:29,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5374 conditions, 880 events. 489/880 cut-off events. For 71180/71180 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4308 event pairs, 62 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 5263. Up to 691 conditions per place. [2024-06-03 22:21:29,920 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 137 selfloop transitions, 67 changer transitions 0/206 dead transitions. [2024-06-03 22:21:29,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 206 transitions, 2281 flow [2024-06-03 22:21:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:21:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:21:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 22:21:29,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 22:21:29,922 INFO L175 Difference]: Start difference. First operand has 230 places, 191 transitions, 1830 flow. Second operand 10 states and 111 transitions. [2024-06-03 22:21:29,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 206 transitions, 2281 flow [2024-06-03 22:21:30,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 206 transitions, 2057 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 22:21:30,083 INFO L231 Difference]: Finished difference. Result has 232 places, 192 transitions, 1757 flow [2024-06-03 22:21:30,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=232, PETRI_TRANSITIONS=192} [2024-06-03 22:21:30,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-03 22:21:30,083 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 192 transitions, 1757 flow [2024-06-03 22:21:30,084 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) [2024-06-03 22:21:30,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:21:30,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:21:30,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 22:21:30,084 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)] === [2024-06-03 22:21:30,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:21:30,084 INFO L85 PathProgramCache]: Analyzing trace with hash -913933926, now seen corresponding path program 7 times [2024-06-03 22:21:30,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:21:30,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105121116] [2024-06-03 22:21:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:21:30,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:21:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:35,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105121116] [2024-06-03 22:21:35,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105121116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:35,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:35,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:21:35,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225933312] [2024-06-03 22:21:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:21:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:21:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:21:35,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:21:35,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 192 transitions, 1757 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) [2024-06-03 22:21:35,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:21:35,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:21:35,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:21:35,971 INFO L124 PetriNetUnfolderBase]: 505/906 cut-off events. [2024-06-03 22:21:35,972 INFO L125 PetriNetUnfolderBase]: For 79451/79451 co-relation queries the response was YES. [2024-06-03 22:21:35,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5592 conditions, 906 events. 505/906 cut-off events. For 79451/79451 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4446 event pairs, 53 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 5480. Up to 662 conditions per place. [2024-06-03 22:21:35,980 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 63 changer transitions 0/217 dead transitions. [2024-06-03 22:21:35,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 217 transitions, 2461 flow [2024-06-03 22:21:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:21:35,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:21:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 22:21:35,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 22:21:35,981 INFO L175 Difference]: Start difference. First operand has 232 places, 192 transitions, 1757 flow. Second operand 10 states and 123 transitions. [2024-06-03 22:21:35,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 217 transitions, 2461 flow [2024-06-03 22:21:36,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 217 transitions, 2321 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 22:21:36,160 INFO L231 Difference]: Finished difference. Result has 234 places, 196 transitions, 1812 flow [2024-06-03 22:21:36,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1812, PETRI_PLACES=234, PETRI_TRANSITIONS=196} [2024-06-03 22:21:36,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-03 22:21:36,160 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 196 transitions, 1812 flow [2024-06-03 22:21:36,160 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) [2024-06-03 22:21:36,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:21:36,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:21:36,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 22:21:36,161 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)] === [2024-06-03 22:21:36,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:21:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash 189751300, now seen corresponding path program 8 times [2024-06-03 22:21:36,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:21:36,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144975278] [2024-06-03 22:21:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:21:36,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:21:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:41,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:41,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144975278] [2024-06-03 22:21:41,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144975278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:41,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:41,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:21:41,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915615147] [2024-06-03 22:21:41,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:41,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:21:41,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:41,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:21:41,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:21:41,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:21:41,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 196 transitions, 1812 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) [2024-06-03 22:21:41,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:21:41,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:21:41,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:21:41,790 INFO L124 PetriNetUnfolderBase]: 501/900 cut-off events. [2024-06-03 22:21:41,790 INFO L125 PetriNetUnfolderBase]: For 74132/74132 co-relation queries the response was YES. [2024-06-03 22:21:41,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 900 events. 501/900 cut-off events. For 74132/74132 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4420 event pairs, 53 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 5325. Up to 668 conditions per place. [2024-06-03 22:21:41,798 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 60 changer transitions 0/215 dead transitions. [2024-06-03 22:21:41,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 215 transitions, 2280 flow [2024-06-03 22:21:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:21:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:21:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 22:21:41,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-03 22:21:41,800 INFO L175 Difference]: Start difference. First operand has 234 places, 196 transitions, 1812 flow. Second operand 10 states and 119 transitions. [2024-06-03 22:21:41,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 215 transitions, 2280 flow [2024-06-03 22:21:41,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 215 transitions, 2169 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-03 22:21:41,977 INFO L231 Difference]: Finished difference. Result has 238 places, 196 transitions, 1826 flow [2024-06-03 22:21:41,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1826, PETRI_PLACES=238, PETRI_TRANSITIONS=196} [2024-06-03 22:21:41,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-03 22:21:41,978 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 196 transitions, 1826 flow [2024-06-03 22:21:41,978 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) [2024-06-03 22:21:41,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:21:41,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:21:41,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 22:21:41,978 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)] === [2024-06-03 22:21:41,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:21:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash 196007410, now seen corresponding path program 9 times [2024-06-03 22:21:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:21:41,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069987436] [2024-06-03 22:21:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:21:41,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:21:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:47,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:47,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069987436] [2024-06-03 22:21:47,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069987436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:47,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:47,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:21:47,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063257547] [2024-06-03 22:21:47,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:47,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:21:47,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:47,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:21:47,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:21:47,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:21:47,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 196 transitions, 1826 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) [2024-06-03 22:21:47,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:21:47,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:21:47,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:21:48,314 INFO L124 PetriNetUnfolderBase]: 507/910 cut-off events. [2024-06-03 22:21:48,315 INFO L125 PetriNetUnfolderBase]: For 75724/75724 co-relation queries the response was YES. [2024-06-03 22:21:48,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5591 conditions, 910 events. 507/910 cut-off events. For 75724/75724 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4469 event pairs, 53 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 5476. Up to 678 conditions per place. [2024-06-03 22:21:48,323 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 61 changer transitions 0/217 dead transitions. [2024-06-03 22:21:48,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 217 transitions, 2332 flow [2024-06-03 22:21:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:21:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:21:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 22:21:48,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 22:21:48,324 INFO L175 Difference]: Start difference. First operand has 238 places, 196 transitions, 1826 flow. Second operand 10 states and 118 transitions. [2024-06-03 22:21:48,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 217 transitions, 2332 flow [2024-06-03 22:21:48,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 217 transitions, 2207 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 22:21:48,489 INFO L231 Difference]: Finished difference. Result has 239 places, 198 transitions, 1866 flow [2024-06-03 22:21:48,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1866, PETRI_PLACES=239, PETRI_TRANSITIONS=198} [2024-06-03 22:21:48,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-03 22:21:48,490 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 198 transitions, 1866 flow [2024-06-03 22:21:48,490 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) [2024-06-03 22:21:48,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:21:48,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:21:48,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 22:21:48,490 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)] === [2024-06-03 22:21:48,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:21:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash 196238050, now seen corresponding path program 10 times [2024-06-03 22:21:48,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:21:48,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965762127] [2024-06-03 22:21:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:21:48,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:21:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:53,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:53,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965762127] [2024-06-03 22:21:53,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965762127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:53,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:53,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:21:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853507253] [2024-06-03 22:21:53,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:53,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:21:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:21:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:21:53,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:21:53,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 198 transitions, 1866 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) [2024-06-03 22:21:53,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:21:53,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:21:53,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:21:54,472 INFO L124 PetriNetUnfolderBase]: 513/920 cut-off events. [2024-06-03 22:21:54,472 INFO L125 PetriNetUnfolderBase]: For 77769/77769 co-relation queries the response was YES. [2024-06-03 22:21:54,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5687 conditions, 920 events. 513/920 cut-off events. For 77769/77769 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4525 event pairs, 54 based on Foata normal form. 2/922 useless extension candidates. Maximal degree in co-relation 5571. Up to 688 conditions per place. [2024-06-03 22:21:54,480 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 63 changer transitions 0/218 dead transitions. [2024-06-03 22:21:54,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 218 transitions, 2376 flow [2024-06-03 22:21:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:21:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:21:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 22:21:54,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 22:21:54,481 INFO L175 Difference]: Start difference. First operand has 239 places, 198 transitions, 1866 flow. Second operand 10 states and 116 transitions. [2024-06-03 22:21:54,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 218 transitions, 2376 flow [2024-06-03 22:21:54,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 218 transitions, 2233 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 22:21:54,670 INFO L231 Difference]: Finished difference. Result has 241 places, 200 transitions, 1896 flow [2024-06-03 22:21:54,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1896, PETRI_PLACES=241, PETRI_TRANSITIONS=200} [2024-06-03 22:21:54,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-03 22:21:54,670 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 200 transitions, 1896 flow [2024-06-03 22:21:54,671 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) [2024-06-03 22:21:54,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:21:54,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:21:54,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 22:21:54,671 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)] === [2024-06-03 22:21:54,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:21:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash 196246978, now seen corresponding path program 1 times [2024-06-03 22:21:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:21:54,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947008215] [2024-06-03 22:21:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:21:54,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:21:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:21:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:21:59,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:21:59,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947008215] [2024-06-03 22:21:59,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947008215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:21:59,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:21:59,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:21:59,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936150009] [2024-06-03 22:21:59,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:21:59,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:21:59,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:21:59,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:21:59,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:22:00,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:22:00,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 200 transitions, 1896 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) [2024-06-03 22:22:00,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:22:00,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:22:00,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:22:00,570 INFO L124 PetriNetUnfolderBase]: 521/936 cut-off events. [2024-06-03 22:22:00,570 INFO L125 PetriNetUnfolderBase]: For 87862/87862 co-relation queries the response was YES. [2024-06-03 22:22:00,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5827 conditions, 936 events. 521/936 cut-off events. For 87862/87862 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4667 event pairs, 54 based on Foata normal form. 4/940 useless extension candidates. Maximal degree in co-relation 5710. Up to 700 conditions per place. [2024-06-03 22:22:00,578 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 58 changer transitions 0/219 dead transitions. [2024-06-03 22:22:00,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 219 transitions, 2420 flow [2024-06-03 22:22:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:22:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:22:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 22:22:00,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 22:22:00,579 INFO L175 Difference]: Start difference. First operand has 241 places, 200 transitions, 1896 flow. Second operand 10 states and 116 transitions. [2024-06-03 22:22:00,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 219 transitions, 2420 flow [2024-06-03 22:22:00,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 219 transitions, 2285 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-03 22:22:00,771 INFO L231 Difference]: Finished difference. Result has 244 places, 202 transitions, 1938 flow [2024-06-03 22:22:00,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1938, PETRI_PLACES=244, PETRI_TRANSITIONS=202} [2024-06-03 22:22:00,771 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-03 22:22:00,771 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 202 transitions, 1938 flow [2024-06-03 22:22:00,771 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) [2024-06-03 22:22:00,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:22:00,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:22:00,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 22:22:00,772 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)] === [2024-06-03 22:22:00,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:22:00,772 INFO L85 PathProgramCache]: Analyzing trace with hash 196000900, now seen corresponding path program 11 times [2024-06-03 22:22:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:22:00,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280849777] [2024-06-03 22:22:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:22:00,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:22:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:22:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:22:05,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:22:05,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280849777] [2024-06-03 22:22:05,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280849777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:22:05,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:22:05,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:22:05,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016891172] [2024-06-03 22:22:05,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:22:05,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:22:05,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:22:05,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:22:05,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:22:05,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:22:05,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 202 transitions, 1938 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) [2024-06-03 22:22:05,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:22:05,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:22:05,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:22:06,265 INFO L124 PetriNetUnfolderBase]: 527/946 cut-off events. [2024-06-03 22:22:06,265 INFO L125 PetriNetUnfolderBase]: For 82097/82097 co-relation queries the response was YES. [2024-06-03 22:22:06,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 946 events. 527/946 cut-off events. For 82097/82097 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4721 event pairs, 53 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 5786. Up to 697 conditions per place. [2024-06-03 22:22:06,274 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 155 selfloop transitions, 66 changer transitions 0/223 dead transitions. [2024-06-03 22:22:06,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 223 transitions, 2464 flow [2024-06-03 22:22:06,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:22:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:22:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 22:22:06,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-03 22:22:06,275 INFO L175 Difference]: Start difference. First operand has 244 places, 202 transitions, 1938 flow. Second operand 10 states and 119 transitions. [2024-06-03 22:22:06,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 223 transitions, 2464 flow [2024-06-03 22:22:06,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 223 transitions, 2301 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 22:22:06,451 INFO L231 Difference]: Finished difference. Result has 246 places, 204 transitions, 1958 flow [2024-06-03 22:22:06,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1958, PETRI_PLACES=246, PETRI_TRANSITIONS=204} [2024-06-03 22:22:06,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-03 22:22:06,452 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 204 transitions, 1958 flow [2024-06-03 22:22:06,452 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) [2024-06-03 22:22:06,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:22:06,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:22:06,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 22:22:06,452 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)] === [2024-06-03 22:22:06,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:22:06,453 INFO L85 PathProgramCache]: Analyzing trace with hash -907678002, now seen corresponding path program 15 times [2024-06-03 22:22:06,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:22:06,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959134293] [2024-06-03 22:22:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:22:06,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:22:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:22:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:22:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:22:10,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959134293] [2024-06-03 22:22:10,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959134293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:22:10,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:22:10,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:22:10,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478340032] [2024-06-03 22:22:10,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:22:10,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:22:10,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:22:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:22:10,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:22:10,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:22:10,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 204 transitions, 1958 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) [2024-06-03 22:22:10,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:22:10,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:22:10,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:22:11,385 INFO L124 PetriNetUnfolderBase]: 531/954 cut-off events. [2024-06-03 22:22:11,386 INFO L125 PetriNetUnfolderBase]: For 83448/83448 co-relation queries the response was YES. [2024-06-03 22:22:11,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5900 conditions, 954 events. 531/954 cut-off events. For 83448/83448 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4768 event pairs, 70 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 5781. Up to 837 conditions per place. [2024-06-03 22:22:11,393 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 42 changer transitions 0/219 dead transitions. [2024-06-03 22:22:11,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 219 transitions, 2437 flow [2024-06-03 22:22:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:22:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:22:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 22:22:11,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 22:22:11,395 INFO L175 Difference]: Start difference. First operand has 246 places, 204 transitions, 1958 flow. Second operand 10 states and 108 transitions. [2024-06-03 22:22:11,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 219 transitions, 2437 flow [2024-06-03 22:22:11,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 219 transitions, 2276 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-03 22:22:11,579 INFO L231 Difference]: Finished difference. Result has 248 places, 205 transitions, 1900 flow [2024-06-03 22:22:11,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1900, PETRI_PLACES=248, PETRI_TRANSITIONS=205} [2024-06-03 22:22:11,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-03 22:22:11,580 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 205 transitions, 1900 flow [2024-06-03 22:22:11,580 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) [2024-06-03 22:22:11,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:22:11,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:22:11,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 22:22:11,580 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)] === [2024-06-03 22:22:11,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:22:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1226165502, now seen corresponding path program 2 times [2024-06-03 22:22:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:22:11,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168437469] [2024-06-03 22:22:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:22:11,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:22:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:22:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:22:17,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:22:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168437469] [2024-06-03 22:22:17,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168437469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:22:17,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:22:17,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:22:17,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571925958] [2024-06-03 22:22:17,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:22:17,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:22:17,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:22:17,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:22:17,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:22:17,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:22:17,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 205 transitions, 1900 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) [2024-06-03 22:22:17,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:22:17,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:22:17,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:22:17,829 INFO L124 PetriNetUnfolderBase]: 538/967 cut-off events. [2024-06-03 22:22:17,830 INFO L125 PetriNetUnfolderBase]: For 85144/85144 co-relation queries the response was YES. [2024-06-03 22:22:17,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5897 conditions, 967 events. 538/967 cut-off events. For 85144/85144 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4871 event pairs, 59 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 5777. Up to 910 conditions per place. [2024-06-03 22:22:17,839 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 24 changer transitions 0/223 dead transitions. [2024-06-03 22:22:17,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 223 transitions, 2421 flow [2024-06-03 22:22:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:22:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:22:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-03 22:22:17,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-03 22:22:17,840 INFO L175 Difference]: Start difference. First operand has 248 places, 205 transitions, 1900 flow. Second operand 10 states and 103 transitions. [2024-06-03 22:22:17,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 223 transitions, 2421 flow [2024-06-03 22:22:18,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 223 transitions, 2329 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 22:22:18,045 INFO L231 Difference]: Finished difference. Result has 252 places, 210 transitions, 1934 flow [2024-06-03 22:22:18,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1934, PETRI_PLACES=252, PETRI_TRANSITIONS=210} [2024-06-03 22:22:18,046 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-03 22:22:18,046 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 210 transitions, 1934 flow [2024-06-03 22:22:18,046 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) [2024-06-03 22:22:18,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:22:18,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:22:18,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 22:22:18,046 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)] === [2024-06-03 22:22:18,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:22:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1990455934, now seen corresponding path program 12 times [2024-06-03 22:22:18,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:22:18,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503418857] [2024-06-03 22:22:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:22:18,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:22:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:22:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:22:23,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:22:23,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503418857] [2024-06-03 22:22:23,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503418857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:22:23,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:22:23,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:22:23,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372542228] [2024-06-03 22:22:23,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:22:23,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:22:23,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:22:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:22:23,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:22:23,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:22:23,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 210 transitions, 1934 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) [2024-06-03 22:22:23,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:22:23,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:22:23,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:22:24,165 INFO L124 PetriNetUnfolderBase]: 544/977 cut-off events. [2024-06-03 22:22:24,165 INFO L125 PetriNetUnfolderBase]: For 87299/87299 co-relation queries the response was YES. [2024-06-03 22:22:24,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 977 events. 544/977 cut-off events. For 87299/87299 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4896 event pairs, 65 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 5921. Up to 904 conditions per place. [2024-06-03 22:22:24,175 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 29 changer transitions 0/225 dead transitions. [2024-06-03 22:22:24,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 225 transitions, 2460 flow [2024-06-03 22:22:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:22:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:22:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 22:22:24,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 22:22:24,177 INFO L175 Difference]: Start difference. First operand has 252 places, 210 transitions, 1934 flow. Second operand 10 states and 106 transitions. [2024-06-03 22:22:24,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 225 transitions, 2460 flow [2024-06-03 22:22:24,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 225 transitions, 2411 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-03 22:22:24,357 INFO L231 Difference]: Finished difference. Result has 257 places, 212 transitions, 1998 flow [2024-06-03 22:22:24,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1998, PETRI_PLACES=257, PETRI_TRANSITIONS=212} [2024-06-03 22:22:24,357 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-03 22:22:24,357 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 212 transitions, 1998 flow [2024-06-03 22:22:24,357 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) [2024-06-03 22:22:24,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:22:24,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:22:24,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 22:22:24,358 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)] === [2024-06-03 22:22:24,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:22:24,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1195838556, now seen corresponding path program 3 times [2024-06-03 22:22:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:22:24,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190746143] [2024-06-03 22:22:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:22:24,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:22:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:22:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:22:29,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:22:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190746143] [2024-06-03 22:22:29,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190746143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:22:29,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:22:29,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:22:29,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849823940] [2024-06-03 22:22:29,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:22:29,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:22:29,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:22:29,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:22:29,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:22:29,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:22:29,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 212 transitions, 1998 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) [2024-06-03 22:22:29,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:22:29,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:22:29,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:22:30,274 INFO L124 PetriNetUnfolderBase]: 548/985 cut-off events. [2024-06-03 22:22:30,274 INFO L125 PetriNetUnfolderBase]: For 89192/89192 co-relation queries the response was YES. [2024-06-03 22:22:30,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6124 conditions, 985 events. 548/985 cut-off events. For 89192/89192 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4977 event pairs, 61 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 6000. Up to 910 conditions per place. [2024-06-03 22:22:30,288 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 194 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2024-06-03 22:22:30,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 226 transitions, 2506 flow [2024-06-03 22:22:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:22:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:22:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 22:22:30,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 22:22:30,289 INFO L175 Difference]: Start difference. First operand has 257 places, 212 transitions, 1998 flow. Second operand 10 states and 105 transitions. [2024-06-03 22:22:30,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 226 transitions, 2506 flow [2024-06-03 22:22:30,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 226 transitions, 2415 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 22:22:30,484 INFO L231 Difference]: Finished difference. Result has 259 places, 213 transitions, 2001 flow [2024-06-03 22:22:30,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=259, PETRI_TRANSITIONS=213} [2024-06-03 22:22:30,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-03 22:22:30,484 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 213 transitions, 2001 flow [2024-06-03 22:22:30,484 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) [2024-06-03 22:22:30,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:22:30,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:22:30,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 22:22:30,485 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)] === [2024-06-03 22:22:30,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:22:30,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1637145950, now seen corresponding path program 4 times [2024-06-03 22:22:30,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:22:30,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070087219] [2024-06-03 22:22:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:22:30,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:22:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:22:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:22:35,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:22:35,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070087219] [2024-06-03 22:22:35,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070087219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:22:35,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:22:35,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:22:35,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388397003] [2024-06-03 22:22:35,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:22:35,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:22:35,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:22:35,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:22:35,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:22:35,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:22:35,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 213 transitions, 2001 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) [2024-06-03 22:22:35,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:22:35,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:22:35,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:22:35,959 INFO L124 PetriNetUnfolderBase]: 552/993 cut-off events. [2024-06-03 22:22:35,959 INFO L125 PetriNetUnfolderBase]: For 91225/91225 co-relation queries the response was YES. [2024-06-03 22:22:35,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 993 events. 552/993 cut-off events. For 91225/91225 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4996 event pairs, 67 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 6056. Up to 952 conditions per place. [2024-06-03 22:22:35,974 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 206 selfloop transitions, 18 changer transitions 0/226 dead transitions. [2024-06-03 22:22:35,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 226 transitions, 2507 flow [2024-06-03 22:22:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:22:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:22:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-03 22:22:35,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-03 22:22:35,977 INFO L175 Difference]: Start difference. First operand has 259 places, 213 transitions, 2001 flow. Second operand 10 states and 98 transitions. [2024-06-03 22:22:35,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 226 transitions, 2507 flow [2024-06-03 22:22:36,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 226 transitions, 2423 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-03 22:22:36,293 INFO L231 Difference]: Finished difference. Result has 261 places, 214 transitions, 1990 flow [2024-06-03 22:22:36,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1990, PETRI_PLACES=261, PETRI_TRANSITIONS=214} [2024-06-03 22:22:36,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-03 22:22:36,293 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 214 transitions, 1990 flow [2024-06-03 22:22:36,293 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) [2024-06-03 22:22:36,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:22:36,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:22:36,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 22:22:36,294 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)] === [2024-06-03 22:22:36,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:22:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1637137022, now seen corresponding path program 13 times [2024-06-03 22:22:36,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:22:36,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524717109] [2024-06-03 22:22:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:22:36,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:22:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:22:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:22:41,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:22:41,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524717109] [2024-06-03 22:22:41,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524717109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:22:41,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:22:41,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:22:41,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887296175] [2024-06-03 22:22:41,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:22:41,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:22:41,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:22:41,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:22:41,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:22:41,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:22:41,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 214 transitions, 1990 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) [2024-06-03 22:22:41,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:22:41,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:22:41,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:22:41,600 INFO L124 PetriNetUnfolderBase]: 558/1003 cut-off events. [2024-06-03 22:22:41,600 INFO L125 PetriNetUnfolderBase]: For 93087/93087 co-relation queries the response was YES. [2024-06-03 22:22:41,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6214 conditions, 1003 events. 558/1003 cut-off events. For 93087/93087 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5090 event pairs, 66 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 6088. Up to 952 conditions per place. [2024-06-03 22:22:41,611 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 20 changer transitions 0/229 dead transitions. [2024-06-03 22:22:41,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 229 transitions, 2528 flow [2024-06-03 22:22:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:22:41,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:22:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-03 22:22:41,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-03 22:22:41,612 INFO L175 Difference]: Start difference. First operand has 261 places, 214 transitions, 1990 flow. Second operand 10 states and 101 transitions. [2024-06-03 22:22:41,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 229 transitions, 2528 flow [2024-06-03 22:22:41,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 229 transitions, 2467 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 22:22:41,842 INFO L231 Difference]: Finished difference. Result has 263 places, 216 transitions, 2028 flow [2024-06-03 22:22:41,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2028, PETRI_PLACES=263, PETRI_TRANSITIONS=216} [2024-06-03 22:22:41,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 22:22:41,843 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 216 transitions, 2028 flow [2024-06-03 22:22:41,843 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) [2024-06-03 22:22:41,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:22:41,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:22:41,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 22:22:41,843 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)] === [2024-06-03 22:22:41,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:22:41,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1864823852, now seen corresponding path program 14 times [2024-06-03 22:22:41,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:22:41,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904391595] [2024-06-03 22:22:41,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:22:41,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:22:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:22:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:22:47,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:22:47,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904391595] [2024-06-03 22:22:47,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904391595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:22:47,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:22:47,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:22:47,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400357546] [2024-06-03 22:22:47,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:22:47,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:22:47,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:22:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:22:47,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:22:47,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:22:47,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 216 transitions, 2028 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) [2024-06-03 22:22:47,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:22:47,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:22:47,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:22:48,111 INFO L124 PetriNetUnfolderBase]: 564/1013 cut-off events. [2024-06-03 22:22:48,111 INFO L125 PetriNetUnfolderBase]: For 95116/95116 co-relation queries the response was YES. [2024-06-03 22:22:48,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6292 conditions, 1013 events. 564/1013 cut-off events. For 95116/95116 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5172 event pairs, 64 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 6165. Up to 936 conditions per place. [2024-06-03 22:22:48,121 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 28 changer transitions 0/232 dead transitions. [2024-06-03 22:22:48,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 232 transitions, 2580 flow [2024-06-03 22:22:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:22:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:22:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 22:22:48,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 22:22:48,122 INFO L175 Difference]: Start difference. First operand has 263 places, 216 transitions, 2028 flow. Second operand 10 states and 105 transitions. [2024-06-03 22:22:48,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 232 transitions, 2580 flow [2024-06-03 22:22:48,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 232 transitions, 2503 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-03 22:22:48,341 INFO L231 Difference]: Finished difference. Result has 265 places, 218 transitions, 2070 flow [2024-06-03 22:22:48,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2070, PETRI_PLACES=265, PETRI_TRANSITIONS=218} [2024-06-03 22:22:48,341 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-03 22:22:48,341 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 218 transitions, 2070 flow [2024-06-03 22:22:48,342 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) [2024-06-03 22:22:48,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:22:48,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:22:48,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 22:22:48,342 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)] === [2024-06-03 22:22:48,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:22:48,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1232661180, now seen corresponding path program 15 times [2024-06-03 22:22:48,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:22:48,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016013762] [2024-06-03 22:22:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:22:48,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:22:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:22:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:22:54,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:22:54,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016013762] [2024-06-03 22:22:54,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016013762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:22:54,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:22:54,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:22:54,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354269949] [2024-06-03 22:22:54,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:22:54,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:22:54,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:22:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:22:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:22:54,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:22:54,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 218 transitions, 2070 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) [2024-06-03 22:22:54,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:22:54,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:22:54,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:22:54,791 INFO L124 PetriNetUnfolderBase]: 570/1023 cut-off events. [2024-06-03 22:22:54,791 INFO L125 PetriNetUnfolderBase]: For 97270/97270 co-relation queries the response was YES. [2024-06-03 22:22:54,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6392 conditions, 1023 events. 570/1023 cut-off events. For 97270/97270 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5225 event pairs, 71 based on Foata normal form. 2/1025 useless extension candidates. Maximal degree in co-relation 6264. Up to 950 conditions per place. [2024-06-03 22:22:54,801 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 28 changer transitions 0/234 dead transitions. [2024-06-03 22:22:54,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 234 transitions, 2630 flow [2024-06-03 22:22:54,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:22:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:22:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 22:22:54,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 22:22:54,802 INFO L175 Difference]: Start difference. First operand has 265 places, 218 transitions, 2070 flow. Second operand 10 states and 108 transitions. [2024-06-03 22:22:54,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 234 transitions, 2630 flow [2024-06-03 22:22:55,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 234 transitions, 2533 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-03 22:22:55,047 INFO L231 Difference]: Finished difference. Result has 267 places, 220 transitions, 2096 flow [2024-06-03 22:22:55,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2096, PETRI_PLACES=267, PETRI_TRANSITIONS=220} [2024-06-03 22:22:55,048 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-03 22:22:55,048 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 220 transitions, 2096 flow [2024-06-03 22:22:55,048 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) [2024-06-03 22:22:55,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:22:55,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:22:55,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 22:22:55,049 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)] === [2024-06-03 22:22:55,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:22:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash 751302998, now seen corresponding path program 5 times [2024-06-03 22:22:55,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:22:55,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922313411] [2024-06-03 22:22:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:22:55,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:22:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:00,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:00,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922313411] [2024-06-03 22:23:00,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922313411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:00,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:00,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:23:00,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516269312] [2024-06-03 22:23:00,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:00,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:23:00,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:00,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:23:00,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:23:00,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:00,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 220 transitions, 2096 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) [2024-06-03 22:23:00,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:00,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:00,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:01,001 INFO L124 PetriNetUnfolderBase]: 574/1031 cut-off events. [2024-06-03 22:23:01,002 INFO L125 PetriNetUnfolderBase]: For 99485/99485 co-relation queries the response was YES. [2024-06-03 22:23:01,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6442 conditions, 1031 events. 574/1031 cut-off events. For 99485/99485 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5259 event pairs, 71 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 6313. Up to 993 conditions per place. [2024-06-03 22:23:01,012 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 216 selfloop transitions, 15 changer transitions 0/233 dead transitions. [2024-06-03 22:23:01,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 233 transitions, 2616 flow [2024-06-03 22:23:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:01,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-03 22:23:01,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-03 22:23:01,013 INFO L175 Difference]: Start difference. First operand has 267 places, 220 transitions, 2096 flow. Second operand 10 states and 96 transitions. [2024-06-03 22:23:01,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 233 transitions, 2616 flow [2024-06-03 22:23:01,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 233 transitions, 2515 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 22:23:01,257 INFO L231 Difference]: Finished difference. Result has 269 places, 221 transitions, 2063 flow [2024-06-03 22:23:01,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=269, PETRI_TRANSITIONS=221} [2024-06-03 22:23:01,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-03 22:23:01,258 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 221 transitions, 2063 flow [2024-06-03 22:23:01,258 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) [2024-06-03 22:23:01,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:01,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:01,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 22:23:01,259 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)] === [2024-06-03 22:23:01,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:01,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1983962674, now seen corresponding path program 16 times [2024-06-03 22:23:01,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:01,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110882438] [2024-06-03 22:23:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:01,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:06,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:06,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110882438] [2024-06-03 22:23:06,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110882438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:06,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:06,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:23:06,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001392229] [2024-06-03 22:23:06,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:06,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:23:06,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:23:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:23:06,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:06,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 221 transitions, 2063 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) [2024-06-03 22:23:06,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:06,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:06,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:07,160 INFO L124 PetriNetUnfolderBase]: 583/1046 cut-off events. [2024-06-03 22:23:07,161 INFO L125 PetriNetUnfolderBase]: For 101829/101829 co-relation queries the response was YES. [2024-06-03 22:23:07,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 1046 events. 583/1046 cut-off events. For 101829/101829 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5387 event pairs, 61 based on Foata normal form. 2/1048 useless extension candidates. Maximal degree in co-relation 6379. Up to 924 conditions per place. [2024-06-03 22:23:07,171 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 195 selfloop transitions, 43 changer transitions 0/240 dead transitions. [2024-06-03 22:23:07,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 240 transitions, 2662 flow [2024-06-03 22:23:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 22:23:07,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 22:23:07,174 INFO L175 Difference]: Start difference. First operand has 269 places, 221 transitions, 2063 flow. Second operand 10 states and 111 transitions. [2024-06-03 22:23:07,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 240 transitions, 2662 flow [2024-06-03 22:23:07,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 240 transitions, 2604 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 22:23:07,428 INFO L231 Difference]: Finished difference. Result has 272 places, 225 transitions, 2205 flow [2024-06-03 22:23:07,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2205, PETRI_PLACES=272, PETRI_TRANSITIONS=225} [2024-06-03 22:23:07,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-03 22:23:07,429 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 225 transitions, 2205 flow [2024-06-03 22:23:07,429 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) [2024-06-03 22:23:07,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:07,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:07,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 22:23:07,429 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)] === [2024-06-03 22:23:07,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash -819354102, now seen corresponding path program 16 times [2024-06-03 22:23:07,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:07,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537501128] [2024-06-03 22:23:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:07,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:11,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:11,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537501128] [2024-06-03 22:23:11,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537501128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:11,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:11,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:23:11,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037639038] [2024-06-03 22:23:11,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:11,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:23:11,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:23:11,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:23:11,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:11,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 225 transitions, 2205 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) [2024-06-03 22:23:11,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:11,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:11,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:12,226 INFO L124 PetriNetUnfolderBase]: 587/1054 cut-off events. [2024-06-03 22:23:12,227 INFO L125 PetriNetUnfolderBase]: For 103800/103800 co-relation queries the response was YES. [2024-06-03 22:23:12,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 1054 events. 587/1054 cut-off events. For 103800/103800 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5417 event pairs, 75 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 6512. Up to 1012 conditions per place. [2024-06-03 22:23:12,237 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 214 selfloop transitions, 21 changer transitions 0/237 dead transitions. [2024-06-03 22:23:12,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 237 transitions, 2714 flow [2024-06-03 22:23:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-03 22:23:12,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 22:23:12,238 INFO L175 Difference]: Start difference. First operand has 272 places, 225 transitions, 2205 flow. Second operand 10 states and 100 transitions. [2024-06-03 22:23:12,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 237 transitions, 2714 flow [2024-06-03 22:23:12,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 237 transitions, 2599 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-03 22:23:12,547 INFO L231 Difference]: Finished difference. Result has 275 places, 226 transitions, 2153 flow [2024-06-03 22:23:12,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2153, PETRI_PLACES=275, PETRI_TRANSITIONS=226} [2024-06-03 22:23:12,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-03 22:23:12,548 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 226 transitions, 2153 flow [2024-06-03 22:23:12,548 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) [2024-06-03 22:23:12,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:12,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:12,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 22:23:12,548 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)] === [2024-06-03 22:23:12,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:12,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1226411580, now seen corresponding path program 17 times [2024-06-03 22:23:12,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:12,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435330165] [2024-06-03 22:23:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:12,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:17,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:17,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435330165] [2024-06-03 22:23:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435330165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:17,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:17,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:23:17,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105289278] [2024-06-03 22:23:17,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:17,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:23:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:17,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:23:17,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:23:17,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:17,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 226 transitions, 2153 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) [2024-06-03 22:23:17,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:17,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:17,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:18,139 INFO L124 PetriNetUnfolderBase]: 603/1080 cut-off events. [2024-06-03 22:23:18,139 INFO L125 PetriNetUnfolderBase]: For 116497/116497 co-relation queries the response was YES. [2024-06-03 22:23:18,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7029 conditions, 1080 events. 603/1080 cut-off events. For 116497/116497 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5581 event pairs, 71 based on Foata normal form. 2/1082 useless extension candidates. Maximal degree in co-relation 6896. Up to 987 conditions per place. [2024-06-03 22:23:18,150 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 33 changer transitions 0/245 dead transitions. [2024-06-03 22:23:18,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 245 transitions, 3013 flow [2024-06-03 22:23:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-03 22:23:18,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 22:23:18,151 INFO L175 Difference]: Start difference. First operand has 275 places, 226 transitions, 2153 flow. Second operand 10 states and 110 transitions. [2024-06-03 22:23:18,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 245 transitions, 3013 flow [2024-06-03 22:23:18,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 245 transitions, 2961 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-03 22:23:18,492 INFO L231 Difference]: Finished difference. Result has 277 places, 230 transitions, 2308 flow [2024-06-03 22:23:18,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2308, PETRI_PLACES=277, PETRI_TRANSITIONS=230} [2024-06-03 22:23:18,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-03 22:23:18,493 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 230 transitions, 2308 flow [2024-06-03 22:23:18,493 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) [2024-06-03 22:23:18,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:18,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:18,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 22:23:18,493 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)] === [2024-06-03 22:23:18,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:18,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1226405070, now seen corresponding path program 18 times [2024-06-03 22:23:18,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:18,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074320719] [2024-06-03 22:23:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:18,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:23,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:23,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074320719] [2024-06-03 22:23:23,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074320719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:23,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:23,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:23:23,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803222838] [2024-06-03 22:23:23,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:23,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:23:23,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:23,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:23:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:23:23,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:23,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 230 transitions, 2308 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) [2024-06-03 22:23:23,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:23,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:23,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:24,143 INFO L124 PetriNetUnfolderBase]: 599/1074 cut-off events. [2024-06-03 22:23:24,143 INFO L125 PetriNetUnfolderBase]: For 108462/108462 co-relation queries the response was YES. [2024-06-03 22:23:24,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6819 conditions, 1074 events. 599/1074 cut-off events. For 108462/108462 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5552 event pairs, 69 based on Foata normal form. 2/1076 useless extension candidates. Maximal degree in co-relation 6685. Up to 1001 conditions per place. [2024-06-03 22:23:24,152 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 28 changer transitions 0/244 dead transitions. [2024-06-03 22:23:24,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 244 transitions, 2830 flow [2024-06-03 22:23:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 22:23:24,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 22:23:24,153 INFO L175 Difference]: Start difference. First operand has 277 places, 230 transitions, 2308 flow. Second operand 10 states and 108 transitions. [2024-06-03 22:23:24,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 244 transitions, 2830 flow [2024-06-03 22:23:24,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 244 transitions, 2691 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-03 22:23:24,462 INFO L231 Difference]: Finished difference. Result has 281 places, 230 transitions, 2230 flow [2024-06-03 22:23:24,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2230, PETRI_PLACES=281, PETRI_TRANSITIONS=230} [2024-06-03 22:23:24,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-03 22:23:24,462 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 230 transitions, 2230 flow [2024-06-03 22:23:24,463 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) [2024-06-03 22:23:24,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:24,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:24,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 22:23:24,463 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)] === [2024-06-03 22:23:24,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash 742714820, now seen corresponding path program 19 times [2024-06-03 22:23:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:24,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246525078] [2024-06-03 22:23:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:24,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246525078] [2024-06-03 22:23:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246525078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:29,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:29,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:23:29,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111639129] [2024-06-03 22:23:29,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:29,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:23:29,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:29,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:23:29,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:23:29,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:29,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 230 transitions, 2230 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) [2024-06-03 22:23:29,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:29,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:29,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:29,858 INFO L124 PetriNetUnfolderBase]: 605/1084 cut-off events. [2024-06-03 22:23:29,858 INFO L125 PetriNetUnfolderBase]: For 109835/109835 co-relation queries the response was YES. [2024-06-03 22:23:29,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1084 events. 605/1084 cut-off events. For 109835/109835 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5618 event pairs, 67 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 6722. Up to 976 conditions per place. [2024-06-03 22:23:29,869 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 37 changer transitions 0/247 dead transitions. [2024-06-03 22:23:29,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 247 transitions, 3036 flow [2024-06-03 22:23:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 22:23:29,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-03 22:23:29,870 INFO L175 Difference]: Start difference. First operand has 281 places, 230 transitions, 2230 flow. Second operand 10 states and 107 transitions. [2024-06-03 22:23:29,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 247 transitions, 3036 flow [2024-06-03 22:23:30,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 247 transitions, 2968 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 22:23:30,167 INFO L231 Difference]: Finished difference. Result has 282 places, 232 transitions, 2311 flow [2024-06-03 22:23:30,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2311, PETRI_PLACES=282, PETRI_TRANSITIONS=232} [2024-06-03 22:23:30,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-03 22:23:30,168 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 232 transitions, 2311 flow [2024-06-03 22:23:30,168 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) [2024-06-03 22:23:30,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:30,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:30,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 22:23:30,169 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)] === [2024-06-03 22:23:30,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1226411766, now seen corresponding path program 17 times [2024-06-03 22:23:30,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:30,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539282987] [2024-06-03 22:23:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:30,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:34,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:34,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539282987] [2024-06-03 22:23:34,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539282987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:34,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:34,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:23:34,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490344680] [2024-06-03 22:23:34,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:34,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:23:34,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:23:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:23:34,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:34,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 232 transitions, 2311 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) [2024-06-03 22:23:34,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:34,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:34,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:35,114 INFO L124 PetriNetUnfolderBase]: 609/1092 cut-off events. [2024-06-03 22:23:35,114 INFO L125 PetriNetUnfolderBase]: For 112113/112113 co-relation queries the response was YES. [2024-06-03 22:23:35,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6940 conditions, 1092 events. 609/1092 cut-off events. For 112113/112113 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5689 event pairs, 79 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 6803. Up to 1050 conditions per place. [2024-06-03 22:23:35,125 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 221 selfloop transitions, 21 changer transitions 0/244 dead transitions. [2024-06-03 22:23:35,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 244 transitions, 2836 flow [2024-06-03 22:23:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-03 22:23:35,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 22:23:35,126 INFO L175 Difference]: Start difference. First operand has 282 places, 232 transitions, 2311 flow. Second operand 10 states and 100 transitions. [2024-06-03 22:23:35,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 244 transitions, 2836 flow [2024-06-03 22:23:35,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 244 transitions, 2499 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-03 22:23:35,440 INFO L231 Difference]: Finished difference. Result has 281 places, 233 transitions, 2039 flow [2024-06-03 22:23:35,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2039, PETRI_PLACES=281, PETRI_TRANSITIONS=233} [2024-06-03 22:23:35,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-03 22:23:35,441 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 233 transitions, 2039 flow [2024-06-03 22:23:35,441 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) [2024-06-03 22:23:35,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:35,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:35,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 22:23:35,441 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)] === [2024-06-03 22:23:35,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1004766726, now seen corresponding path program 18 times [2024-06-03 22:23:35,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:35,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237735682] [2024-06-03 22:23:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:35,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:40,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:40,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237735682] [2024-06-03 22:23:40,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237735682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:40,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:40,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:23:40,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036236458] [2024-06-03 22:23:40,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:40,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:23:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:40,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:23:40,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:23:40,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:40,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 233 transitions, 2039 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) [2024-06-03 22:23:40,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:40,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:40,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:40,594 INFO L124 PetriNetUnfolderBase]: 606/1087 cut-off events. [2024-06-03 22:23:40,594 INFO L125 PetriNetUnfolderBase]: For 101900/101900 co-relation queries the response was YES. [2024-06-03 22:23:40,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6304 conditions, 1087 events. 606/1087 cut-off events. For 101900/101900 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5660 event pairs, 77 based on Foata normal form. 2/1089 useless extension candidates. Maximal degree in co-relation 6168. Up to 1054 conditions per place. [2024-06-03 22:23:40,604 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 16 changer transitions 0/244 dead transitions. [2024-06-03 22:23:40,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 244 transitions, 2547 flow [2024-06-03 22:23:40,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-03 22:23:40,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.303125 [2024-06-03 22:23:40,606 INFO L175 Difference]: Start difference. First operand has 281 places, 233 transitions, 2039 flow. Second operand 10 states and 97 transitions. [2024-06-03 22:23:40,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 244 transitions, 2547 flow [2024-06-03 22:23:41,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 244 transitions, 2489 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 22:23:41,005 INFO L231 Difference]: Finished difference. Result has 283 places, 233 transitions, 2017 flow [2024-06-03 22:23:41,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2017, PETRI_PLACES=283, PETRI_TRANSITIONS=233} [2024-06-03 22:23:41,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-03 22:23:41,006 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 233 transitions, 2017 flow [2024-06-03 22:23:41,006 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) [2024-06-03 22:23:41,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:41,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:41,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 22:23:41,006 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)] === [2024-06-03 22:23:41,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1864584284, now seen corresponding path program 6 times [2024-06-03 22:23:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:41,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719699274] [2024-06-03 22:23:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:46,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:46,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719699274] [2024-06-03 22:23:46,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719699274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:46,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:46,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:23:46,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336855426] [2024-06-03 22:23:46,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:46,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:23:46,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:46,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:23:46,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:23:46,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:46,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 233 transitions, 2017 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) [2024-06-03 22:23:46,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:46,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:46,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:46,850 INFO L124 PetriNetUnfolderBase]: 603/1082 cut-off events. [2024-06-03 22:23:46,850 INFO L125 PetriNetUnfolderBase]: For 92365/92365 co-relation queries the response was YES. [2024-06-03 22:23:46,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6027 conditions, 1082 events. 603/1082 cut-off events. For 92365/92365 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5623 event pairs, 71 based on Foata normal form. 2/1084 useless extension candidates. Maximal degree in co-relation 5890. Up to 1034 conditions per place. [2024-06-03 22:23:46,860 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 223 selfloop transitions, 21 changer transitions 0/246 dead transitions. [2024-06-03 22:23:46,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 246 transitions, 2537 flow [2024-06-03 22:23:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-03 22:23:46,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-03 22:23:46,861 INFO L175 Difference]: Start difference. First operand has 283 places, 233 transitions, 2017 flow. Second operand 10 states and 101 transitions. [2024-06-03 22:23:46,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 246 transitions, 2537 flow [2024-06-03 22:23:47,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 246 transitions, 2433 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-03 22:23:47,119 INFO L231 Difference]: Finished difference. Result has 284 places, 233 transitions, 1959 flow [2024-06-03 22:23:47,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1959, PETRI_PLACES=284, PETRI_TRANSITIONS=233} [2024-06-03 22:23:47,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-03 22:23:47,119 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 233 transitions, 1959 flow [2024-06-03 22:23:47,119 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) [2024-06-03 22:23:47,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:47,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:47,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 22:23:47,120 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)] === [2024-06-03 22:23:47,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:47,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2082866322, now seen corresponding path program 20 times [2024-06-03 22:23:47,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:47,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776110187] [2024-06-03 22:23:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:47,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:51,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776110187] [2024-06-03 22:23:51,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776110187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:51,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:51,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:23:51,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9617948] [2024-06-03 22:23:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:51,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:23:51,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:23:51,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:23:52,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:52,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 233 transitions, 1959 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) [2024-06-03 22:23:52,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:52,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:52,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:52,617 INFO L124 PetriNetUnfolderBase]: 599/1076 cut-off events. [2024-06-03 22:23:52,618 INFO L125 PetriNetUnfolderBase]: For 82563/82563 co-relation queries the response was YES. [2024-06-03 22:23:52,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 1076 events. 599/1076 cut-off events. For 82563/82563 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5609 event pairs, 67 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 5569. Up to 998 conditions per place. [2024-06-03 22:23:52,628 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 28 changer transitions 0/247 dead transitions. [2024-06-03 22:23:52,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 247 transitions, 2487 flow [2024-06-03 22:23:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 22:23:52,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 22:23:52,629 INFO L175 Difference]: Start difference. First operand has 284 places, 233 transitions, 1959 flow. Second operand 10 states and 106 transitions. [2024-06-03 22:23:52,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 247 transitions, 2487 flow [2024-06-03 22:23:52,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 247 transitions, 2358 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-03 22:23:52,863 INFO L231 Difference]: Finished difference. Result has 285 places, 233 transitions, 1891 flow [2024-06-03 22:23:52,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1891, PETRI_PLACES=285, PETRI_TRANSITIONS=233} [2024-06-03 22:23:52,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-03 22:23:52,863 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 233 transitions, 1891 flow [2024-06-03 22:23:52,863 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) [2024-06-03 22:23:52,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:52,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:52,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 22:23:52,864 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)] === [2024-06-03 22:23:52,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1445799716, now seen corresponding path program 1 times [2024-06-03 22:23:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:52,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708248005] [2024-06-03 22:23:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:23:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:23:58,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:23:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708248005] [2024-06-03 22:23:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708248005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:23:58,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:23:58,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:23:58,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691508352] [2024-06-03 22:23:58,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:23:58,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:23:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:23:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:23:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:23:58,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:23:58,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 233 transitions, 1891 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) [2024-06-03 22:23:58,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:23:58,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:23:58,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:23:58,885 INFO L124 PetriNetUnfolderBase]: 633/1150 cut-off events. [2024-06-03 22:23:58,885 INFO L125 PetriNetUnfolderBase]: For 163308/163308 co-relation queries the response was YES. [2024-06-03 22:23:58,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6716 conditions, 1150 events. 633/1150 cut-off events. For 163308/163308 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6028 event pairs, 91 based on Foata normal form. 8/1158 useless extension candidates. Maximal degree in co-relation 6578. Up to 570 conditions per place. [2024-06-03 22:23:58,896 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 149 selfloop transitions, 90 changer transitions 18/259 dead transitions. [2024-06-03 22:23:58,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 259 transitions, 2717 flow [2024-06-03 22:23:58,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:23:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:23:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 22:23:58,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-03 22:23:58,897 INFO L175 Difference]: Start difference. First operand has 285 places, 233 transitions, 1891 flow. Second operand 10 states and 117 transitions. [2024-06-03 22:23:58,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 259 transitions, 2717 flow [2024-06-03 22:23:59,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 259 transitions, 2598 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 22:23:59,305 INFO L231 Difference]: Finished difference. Result has 285 places, 229 transitions, 1934 flow [2024-06-03 22:23:59,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1934, PETRI_PLACES=285, PETRI_TRANSITIONS=229} [2024-06-03 22:23:59,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-03 22:23:59,306 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 229 transitions, 1934 flow [2024-06-03 22:23:59,306 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) [2024-06-03 22:23:59,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:23:59,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:23:59,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 22:23:59,306 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)] === [2024-06-03 22:23:59,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:23:59,307 INFO L85 PathProgramCache]: Analyzing trace with hash 358641154, now seen corresponding path program 2 times [2024-06-03 22:23:59,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:23:59,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88058111] [2024-06-03 22:23:59,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:23:59,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:23:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:24:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:24:03,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:24:03,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88058111] [2024-06-03 22:24:03,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88058111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:24:03,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:24:03,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:24:03,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094479944] [2024-06-03 22:24:03,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:24:03,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:24:03,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:24:03,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:24:03,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:24:04,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:24:04,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 229 transitions, 1934 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) [2024-06-03 22:24:04,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:24:04,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:24:04,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:24:04,559 INFO L124 PetriNetUnfolderBase]: 646/1181 cut-off events. [2024-06-03 22:24:04,559 INFO L125 PetriNetUnfolderBase]: For 225810/225810 co-relation queries the response was YES. [2024-06-03 22:24:04,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7944 conditions, 1181 events. 646/1181 cut-off events. For 225810/225810 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6189 event pairs, 98 based on Foata normal form. 8/1189 useless extension candidates. Maximal degree in co-relation 7806. Up to 589 conditions per place. [2024-06-03 22:24:04,570 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 104 changer transitions 13/256 dead transitions. [2024-06-03 22:24:04,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 256 transitions, 2740 flow [2024-06-03 22:24:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:24:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:24:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-03 22:24:04,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-03 22:24:04,571 INFO L175 Difference]: Start difference. First operand has 285 places, 229 transitions, 1934 flow. Second operand 10 states and 131 transitions. [2024-06-03 22:24:04,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 256 transitions, 2740 flow [2024-06-03 22:24:05,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 256 transitions, 2625 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 22:24:05,082 INFO L231 Difference]: Finished difference. Result has 280 places, 226 transitions, 2020 flow [2024-06-03 22:24:05,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2020, PETRI_PLACES=280, PETRI_TRANSITIONS=226} [2024-06-03 22:24:05,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-03 22:24:05,082 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 226 transitions, 2020 flow [2024-06-03 22:24:05,082 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) [2024-06-03 22:24:05,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:24:05,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:24:05,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 22:24:05,083 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)] === [2024-06-03 22:24:05,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:24:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash 213087132, now seen corresponding path program 3 times [2024-06-03 22:24:05,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:24:05,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457427878] [2024-06-03 22:24:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:24:05,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:24:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:24:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:24:09,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:24:09,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457427878] [2024-06-03 22:24:09,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457427878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:24:09,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:24:09,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:24:09,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885811205] [2024-06-03 22:24:09,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:24:09,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:24:09,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:24:09,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:24:09,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:24:09,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:24:09,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 226 transitions, 2020 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) [2024-06-03 22:24:09,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:24:09,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:24:09,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:24:10,211 INFO L124 PetriNetUnfolderBase]: 636/1163 cut-off events. [2024-06-03 22:24:10,212 INFO L125 PetriNetUnfolderBase]: For 213768/213768 co-relation queries the response was YES. [2024-06-03 22:24:10,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8048 conditions, 1163 events. 636/1163 cut-off events. For 213768/213768 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6079 event pairs, 94 based on Foata normal form. 8/1171 useless extension candidates. Maximal degree in co-relation 7913. Up to 589 conditions per place. [2024-06-03 22:24:10,223 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 135 selfloop transitions, 105 changer transitions 10/252 dead transitions. [2024-06-03 22:24:10,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 252 transitions, 2810 flow [2024-06-03 22:24:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:24:10,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:24:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-03 22:24:10,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 22:24:10,225 INFO L175 Difference]: Start difference. First operand has 280 places, 226 transitions, 2020 flow. Second operand 10 states and 130 transitions. [2024-06-03 22:24:10,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 252 transitions, 2810 flow [2024-06-03 22:24:10,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 252 transitions, 2586 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 22:24:10,948 INFO L231 Difference]: Finished difference. Result has 276 places, 224 transitions, 2000 flow [2024-06-03 22:24:10,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2000, PETRI_PLACES=276, PETRI_TRANSITIONS=224} [2024-06-03 22:24:10,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-03 22:24:10,949 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 224 transitions, 2000 flow [2024-06-03 22:24:10,949 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) [2024-06-03 22:24:10,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:24:10,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:24:10,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 22:24:10,949 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)] === [2024-06-03 22:24:10,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:24:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash 358790884, now seen corresponding path program 4 times [2024-06-03 22:24:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:24:10,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110582173] [2024-06-03 22:24:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:24:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:24:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:24:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:24:15,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:24:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110582173] [2024-06-03 22:24:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110582173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:24:15,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:24:15,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:24:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412472058] [2024-06-03 22:24:15,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:24:15,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:24:15,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:24:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:24:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:24:15,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:24:15,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 224 transitions, 2000 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) [2024-06-03 22:24:15,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:24:15,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:24:15,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:24:16,220 INFO L124 PetriNetUnfolderBase]: 605/1102 cut-off events. [2024-06-03 22:24:16,220 INFO L125 PetriNetUnfolderBase]: For 165629/165629 co-relation queries the response was YES. [2024-06-03 22:24:16,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6805 conditions, 1102 events. 605/1102 cut-off events. For 165629/165629 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5710 event pairs, 87 based on Foata normal form. 10/1112 useless extension candidates. Maximal degree in co-relation 6671. Up to 589 conditions per place. [2024-06-03 22:24:16,230 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 129 selfloop transitions, 101 changer transitions 13/245 dead transitions. [2024-06-03 22:24:16,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 245 transitions, 2548 flow [2024-06-03 22:24:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:24:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:24:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-03 22:24:16,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-03 22:24:16,231 INFO L175 Difference]: Start difference. First operand has 276 places, 224 transitions, 2000 flow. Second operand 10 states and 126 transitions. [2024-06-03 22:24:16,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 245 transitions, 2548 flow [2024-06-03 22:24:16,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 245 transitions, 2334 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 22:24:16,581 INFO L231 Difference]: Finished difference. Result has 274 places, 218 transitions, 1954 flow [2024-06-03 22:24:16,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1954, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2024-06-03 22:24:16,582 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-03 22:24:16,582 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 1954 flow [2024-06-03 22:24:16,582 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) [2024-06-03 22:24:16,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:24:16,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:24:16,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 22:24:16,582 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)] === [2024-06-03 22:24:16,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:24:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash 355066234, now seen corresponding path program 5 times [2024-06-03 22:24:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:24:16,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377966047] [2024-06-03 22:24:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:24:16,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:24:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:24:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:24:21,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:24:21,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377966047] [2024-06-03 22:24:21,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377966047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:24:21,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:24:21,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:24:21,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756144376] [2024-06-03 22:24:21,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:24:21,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:24:21,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:24:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:24:21,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:24:21,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:24:21,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 1954 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) [2024-06-03 22:24:21,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:24:21,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:24:21,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:24:21,894 INFO L124 PetriNetUnfolderBase]: 618/1133 cut-off events. [2024-06-03 22:24:21,894 INFO L125 PetriNetUnfolderBase]: For 205766/205766 co-relation queries the response was YES. [2024-06-03 22:24:21,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7870 conditions, 1133 events. 618/1133 cut-off events. For 205766/205766 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5892 event pairs, 94 based on Foata normal form. 8/1141 useless extension candidates. Maximal degree in co-relation 7737. Up to 493 conditions per place. [2024-06-03 22:24:21,905 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 132 selfloop transitions, 91 changer transitions 20/245 dead transitions. [2024-06-03 22:24:21,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 245 transitions, 2726 flow [2024-06-03 22:24:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:24:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:24:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-03 22:24:21,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-03 22:24:21,906 INFO L175 Difference]: Start difference. First operand has 274 places, 218 transitions, 1954 flow. Second operand 10 states and 127 transitions. [2024-06-03 22:24:21,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 245 transitions, 2726 flow [2024-06-03 22:24:22,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 245 transitions, 2495 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-03 22:24:22,419 INFO L231 Difference]: Finished difference. Result has 269 places, 210 transitions, 1858 flow [2024-06-03 22:24:22,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1858, PETRI_PLACES=269, PETRI_TRANSITIONS=210} [2024-06-03 22:24:22,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-03 22:24:22,419 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 210 transitions, 1858 flow [2024-06-03 22:24:22,419 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) [2024-06-03 22:24:22,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:24:22,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:24:22,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 22:24:22,420 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)] === [2024-06-03 22:24:22,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:24:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2085633286, now seen corresponding path program 6 times [2024-06-03 22:24:22,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:24:22,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59186934] [2024-06-03 22:24:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:24:22,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:24:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:24:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:24:27,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:24:27,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59186934] [2024-06-03 22:24:27,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59186934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:24:27,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:24:27,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:24:27,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305495455] [2024-06-03 22:24:27,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:24:27,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:24:27,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:24:27,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:24:27,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:24:27,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:24:27,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 210 transitions, 1858 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) [2024-06-03 22:24:27,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:24:27,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:24:27,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:24:27,996 INFO L124 PetriNetUnfolderBase]: 600/1099 cut-off events. [2024-06-03 22:24:27,996 INFO L125 PetriNetUnfolderBase]: For 216492/216492 co-relation queries the response was YES. [2024-06-03 22:24:28,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7686 conditions, 1099 events. 600/1099 cut-off events. For 216492/216492 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5668 event pairs, 86 based on Foata normal form. 10/1109 useless extension candidates. Maximal degree in co-relation 7555. Up to 821 conditions per place. [2024-06-03 22:24:28,006 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 58 changer transitions 14/232 dead transitions. [2024-06-03 22:24:28,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 232 transitions, 2382 flow [2024-06-03 22:24:28,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:24:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:24:28,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 22:24:28,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 22:24:28,007 INFO L175 Difference]: Start difference. First operand has 269 places, 210 transitions, 1858 flow. Second operand 11 states and 125 transitions. [2024-06-03 22:24:28,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 232 transitions, 2382 flow [2024-06-03 22:24:28,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 232 transitions, 2186 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-03 22:24:28,370 INFO L231 Difference]: Finished difference. Result has 258 places, 207 transitions, 1761 flow [2024-06-03 22:24:28,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1761, PETRI_PLACES=258, PETRI_TRANSITIONS=207} [2024-06-03 22:24:28,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-03 22:24:28,370 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 207 transitions, 1761 flow [2024-06-03 22:24:28,370 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) [2024-06-03 22:24:28,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:24:28,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:24:28,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 22:24:28,371 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)] === [2024-06-03 22:24:28,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:24:28,371 INFO L85 PathProgramCache]: Analyzing trace with hash 747276724, now seen corresponding path program 7 times [2024-06-03 22:24:28,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:24:28,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362203118] [2024-06-03 22:24:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:24:28,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:24:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:24:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:24:33,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:24:33,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362203118] [2024-06-03 22:24:33,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362203118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:24:33,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:24:33,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:24:33,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606979322] [2024-06-03 22:24:33,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:24:33,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:24:33,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:24:33,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:24:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:24:33,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:24:33,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 207 transitions, 1761 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) [2024-06-03 22:24:33,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:24:33,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:24:33,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:24:33,975 INFO L124 PetriNetUnfolderBase]: 561/1026 cut-off events. [2024-06-03 22:24:33,975 INFO L125 PetriNetUnfolderBase]: For 144144/144144 co-relation queries the response was YES. [2024-06-03 22:24:33,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6232 conditions, 1026 events. 561/1026 cut-off events. For 144144/144144 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5222 event pairs, 67 based on Foata normal form. 10/1036 useless extension candidates. Maximal degree in co-relation 6107. Up to 747 conditions per place. [2024-06-03 22:24:33,985 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 58 changer transitions 14/229 dead transitions. [2024-06-03 22:24:33,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 229 transitions, 2279 flow [2024-06-03 22:24:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:24:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:24:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 22:24:33,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 22:24:33,986 INFO L175 Difference]: Start difference. First operand has 258 places, 207 transitions, 1761 flow. Second operand 11 states and 125 transitions. [2024-06-03 22:24:33,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 229 transitions, 2279 flow [2024-06-03 22:24:34,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 229 transitions, 2159 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 22:24:34,256 INFO L231 Difference]: Finished difference. Result has 256 places, 204 transitions, 1742 flow [2024-06-03 22:24:34,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1742, PETRI_PLACES=256, PETRI_TRANSITIONS=204} [2024-06-03 22:24:34,257 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-03 22:24:34,257 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 204 transitions, 1742 flow [2024-06-03 22:24:34,257 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) [2024-06-03 22:24:34,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:24:34,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:24:34,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 22:24:34,257 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)] === [2024-06-03 22:24:34,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:24:34,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1386313780, now seen corresponding path program 8 times [2024-06-03 22:24:34,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:24:34,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310928208] [2024-06-03 22:24:34,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:24:34,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:24:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:24:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:24:40,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:24:40,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310928208] [2024-06-03 22:24:40,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310928208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:24:40,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:24:40,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:24:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855758003] [2024-06-03 22:24:40,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:24:40,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:24:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:24:40,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:24:40,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:24:40,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:24:40,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 204 transitions, 1742 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) [2024-06-03 22:24:40,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:24:40,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:24:40,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:24:40,947 INFO L124 PetriNetUnfolderBase]: 549/1006 cut-off events. [2024-06-03 22:24:40,947 INFO L125 PetriNetUnfolderBase]: For 131920/131920 co-relation queries the response was YES. [2024-06-03 22:24:40,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6137 conditions, 1006 events. 549/1006 cut-off events. For 131920/131920 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5100 event pairs, 79 based on Foata normal form. 8/1014 useless extension candidates. Maximal degree in co-relation 6013. Up to 531 conditions per place. [2024-06-03 22:24:40,955 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 90 changer transitions 13/227 dead transitions. [2024-06-03 22:24:40,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 227 transitions, 2254 flow [2024-06-03 22:24:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:24:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:24:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 22:24:40,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 22:24:40,956 INFO L175 Difference]: Start difference. First operand has 256 places, 204 transitions, 1742 flow. Second operand 11 states and 131 transitions. [2024-06-03 22:24:40,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 227 transitions, 2254 flow [2024-06-03 22:24:41,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 227 transitions, 2134 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 22:24:41,202 INFO L231 Difference]: Finished difference. Result has 254 places, 201 transitions, 1786 flow [2024-06-03 22:24:41,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1786, PETRI_PLACES=254, PETRI_TRANSITIONS=201} [2024-06-03 22:24:41,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 22:24:41,203 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 201 transitions, 1786 flow [2024-06-03 22:24:41,203 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) [2024-06-03 22:24:41,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:24:41,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:24:41,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 22:24:41,203 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)] === [2024-06-03 22:24:41,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:24:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2091347206, now seen corresponding path program 9 times [2024-06-03 22:24:41,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:24:41,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528833061] [2024-06-03 22:24:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:24:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:24:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:24:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:24:45,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:24:45,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528833061] [2024-06-03 22:24:45,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528833061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:24:45,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:24:45,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:24:45,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162267970] [2024-06-03 22:24:45,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:24:45,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:24:45,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:24:45,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:24:45,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:24:46,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:24:46,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 201 transitions, 1786 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) [2024-06-03 22:24:46,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:24:46,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:24:46,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:24:46,541 INFO L124 PetriNetUnfolderBase]: 571/1052 cut-off events. [2024-06-03 22:24:46,542 INFO L125 PetriNetUnfolderBase]: For 175264/175264 co-relation queries the response was YES. [2024-06-03 22:24:46,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7266 conditions, 1052 events. 571/1052 cut-off events. For 175264/175264 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5396 event pairs, 74 based on Foata normal form. 8/1060 useless extension candidates. Maximal degree in co-relation 7143. Up to 691 conditions per place. [2024-06-03 22:24:46,551 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 57 changer transitions 13/228 dead transitions. [2024-06-03 22:24:46,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 228 transitions, 2510 flow [2024-06-03 22:24:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:24:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:24:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-03 22:24:46,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 22:24:46,552 INFO L175 Difference]: Start difference. First operand has 254 places, 201 transitions, 1786 flow. Second operand 10 states and 125 transitions. [2024-06-03 22:24:46,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 228 transitions, 2510 flow [2024-06-03 22:24:46,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 228 transitions, 2318 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 22:24:46,919 INFO L231 Difference]: Finished difference. Result has 249 places, 198 transitions, 1699 flow [2024-06-03 22:24:46,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1699, PETRI_PLACES=249, PETRI_TRANSITIONS=198} [2024-06-03 22:24:46,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-03 22:24:46,919 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 198 transitions, 1699 flow [2024-06-03 22:24:46,920 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) [2024-06-03 22:24:46,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:24:46,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:24:46,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 22:24:46,920 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)] === [2024-06-03 22:24:46,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:24:46,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2091197476, now seen corresponding path program 10 times [2024-06-03 22:24:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:24:46,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627605863] [2024-06-03 22:24:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:24:46,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:24:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:24:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:24:51,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:24:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627605863] [2024-06-03 22:24:51,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627605863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:24:51,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:24:51,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:24:51,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809823008] [2024-06-03 22:24:51,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:24:51,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:24:51,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:24:51,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:24:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:24:51,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:24:51,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 198 transitions, 1699 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) [2024-06-03 22:24:51,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:24:51,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:24:51,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:24:52,377 INFO L124 PetriNetUnfolderBase]: 558/1029 cut-off events. [2024-06-03 22:24:52,377 INFO L125 PetriNetUnfolderBase]: For 168086/168086 co-relation queries the response was YES. [2024-06-03 22:24:52,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1029 events. 558/1029 cut-off events. For 168086/168086 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5257 event pairs, 83 based on Foata normal form. 10/1039 useless extension candidates. Maximal degree in co-relation 6737. Up to 747 conditions per place. [2024-06-03 22:24:52,386 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 147 selfloop transitions, 56 changer transitions 14/219 dead transitions. [2024-06-03 22:24:52,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 219 transitions, 2195 flow [2024-06-03 22:24:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:24:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:24:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 22:24:52,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-03 22:24:52,387 INFO L175 Difference]: Start difference. First operand has 249 places, 198 transitions, 1699 flow. Second operand 10 states and 117 transitions. [2024-06-03 22:24:52,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 219 transitions, 2195 flow [2024-06-03 22:24:52,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 219 transitions, 2078 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 22:24:52,680 INFO L231 Difference]: Finished difference. Result has 246 places, 195 transitions, 1677 flow [2024-06-03 22:24:52,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1677, PETRI_PLACES=246, PETRI_TRANSITIONS=195} [2024-06-03 22:24:52,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-03 22:24:52,681 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 195 transitions, 1677 flow [2024-06-03 22:24:52,681 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) [2024-06-03 22:24:52,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:24:52,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:24:52,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 22:24:52,682 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)] === [2024-06-03 22:24:52,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:24:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash 887606936, now seen corresponding path program 11 times [2024-06-03 22:24:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:24:52,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653002981] [2024-06-03 22:24:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:24:52,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:24:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:24:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:24:57,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:24:57,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653002981] [2024-06-03 22:24:57,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653002981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:24:57,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:24:57,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:24:57,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597551374] [2024-06-03 22:24:57,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:24:57,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:24:57,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:24:57,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:24:57,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:24:57,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:24:57,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 195 transitions, 1677 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) [2024-06-03 22:24:57,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:24:57,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:24:57,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:24:57,985 INFO L124 PetriNetUnfolderBase]: 524/963 cut-off events. [2024-06-03 22:24:57,985 INFO L125 PetriNetUnfolderBase]: For 118698/118698 co-relation queries the response was YES. [2024-06-03 22:24:57,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 963 events. 524/963 cut-off events. For 118698/118698 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4810 event pairs, 61 based on Foata normal form. 8/971 useless extension candidates. Maximal degree in co-relation 5761. Up to 691 conditions per place. [2024-06-03 22:24:57,993 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 144 selfloop transitions, 53 changer transitions 16/215 dead transitions. [2024-06-03 22:24:57,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 215 transitions, 2157 flow [2024-06-03 22:24:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:24:57,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:24:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 22:24:57,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-03 22:24:57,994 INFO L175 Difference]: Start difference. First operand has 246 places, 195 transitions, 1677 flow. Second operand 10 states and 114 transitions. [2024-06-03 22:24:57,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 215 transitions, 2157 flow [2024-06-03 22:24:58,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 215 transitions, 2041 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 22:24:58,218 INFO L231 Difference]: Finished difference. Result has 244 places, 191 transitions, 1646 flow [2024-06-03 22:24:58,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1646, PETRI_PLACES=244, PETRI_TRANSITIONS=191} [2024-06-03 22:24:58,219 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-03 22:24:58,219 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 191 transitions, 1646 flow [2024-06-03 22:24:58,219 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) [2024-06-03 22:24:58,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:24:58,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:24:58,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 22:24:58,220 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)] === [2024-06-03 22:24:58,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:24:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash 581227518, now seen corresponding path program 12 times [2024-06-03 22:24:58,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:24:58,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933503793] [2024-06-03 22:24:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:24:58,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:24:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:25:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:25:02,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:25:02,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933503793] [2024-06-03 22:25:02,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933503793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:25:02,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:25:02,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:25:02,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851180695] [2024-06-03 22:25:02,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:25:02,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:25:02,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:25:02,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:25:02,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:25:02,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:25:02,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 191 transitions, 1646 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) [2024-06-03 22:25:02,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:25:02,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:25:02,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:25:03,331 INFO L124 PetriNetUnfolderBase]: 538/993 cut-off events. [2024-06-03 22:25:03,331 INFO L125 PetriNetUnfolderBase]: For 149540/149540 co-relation queries the response was YES. [2024-06-03 22:25:03,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6715 conditions, 993 events. 538/993 cut-off events. For 149540/149540 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4988 event pairs, 71 based on Foata normal form. 8/1001 useless extension candidates. Maximal degree in co-relation 6597. Up to 362 conditions per place. [2024-06-03 22:25:03,339 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 91 changer transitions 16/220 dead transitions. [2024-06-03 22:25:03,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 220 transitions, 2370 flow [2024-06-03 22:25:03,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:25:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:25:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 22:25:03,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-03 22:25:03,340 INFO L175 Difference]: Start difference. First operand has 244 places, 191 transitions, 1646 flow. Second operand 10 states and 122 transitions. [2024-06-03 22:25:03,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 220 transitions, 2370 flow [2024-06-03 22:25:03,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 220 transitions, 2248 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 22:25:03,563 INFO L231 Difference]: Finished difference. Result has 237 places, 187 transitions, 1691 flow [2024-06-03 22:25:03,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1691, PETRI_PLACES=237, PETRI_TRANSITIONS=187} [2024-06-03 22:25:03,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-03 22:25:03,563 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 187 transitions, 1691 flow [2024-06-03 22:25:03,563 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) [2024-06-03 22:25:03,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:25:03,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:25:03,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 22:25:03,564 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)] === [2024-06-03 22:25:03,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:25:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash 730650340, now seen corresponding path program 13 times [2024-06-03 22:25:03,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:25:03,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871956877] [2024-06-03 22:25:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:25:03,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:25:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:25:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:25:08,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:25:08,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871956877] [2024-06-03 22:25:08,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871956877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:25:08,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:25:08,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:25:08,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014187751] [2024-06-03 22:25:08,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:25:08,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:25:08,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:25:08,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:25:08,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:25:08,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:25:08,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 187 transitions, 1691 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) [2024-06-03 22:25:08,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:25:08,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:25:08,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:25:09,258 INFO L124 PetriNetUnfolderBase]: 520/957 cut-off events. [2024-06-03 22:25:09,258 INFO L125 PetriNetUnfolderBase]: For 147725/147725 co-relation queries the response was YES. [2024-06-03 22:25:09,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6597 conditions, 957 events. 520/957 cut-off events. For 147725/147725 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4783 event pairs, 69 based on Foata normal form. 10/967 useless extension candidates. Maximal degree in co-relation 6482. Up to 505 conditions per place. [2024-06-03 22:25:09,267 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 85 selfloop transitions, 112 changer transitions 14/213 dead transitions. [2024-06-03 22:25:09,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 213 transitions, 2189 flow [2024-06-03 22:25:09,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:25:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:25:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 22:25:09,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 22:25:09,268 INFO L175 Difference]: Start difference. First operand has 237 places, 187 transitions, 1691 flow. Second operand 11 states and 131 transitions. [2024-06-03 22:25:09,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 213 transitions, 2189 flow [2024-06-03 22:25:09,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 213 transitions, 2058 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 22:25:09,508 INFO L231 Difference]: Finished difference. Result has 233 places, 184 transitions, 1762 flow [2024-06-03 22:25:09,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1762, PETRI_PLACES=233, PETRI_TRANSITIONS=184} [2024-06-03 22:25:09,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-03 22:25:09,509 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 184 transitions, 1762 flow [2024-06-03 22:25:09,509 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) [2024-06-03 22:25:09,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:25:09,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:25:09,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 22:25:09,509 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)] === [2024-06-03 22:25:09,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:25:09,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1548638336, now seen corresponding path program 14 times [2024-06-03 22:25:09,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:25:09,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208037826] [2024-06-03 22:25:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:25:09,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:25:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:25:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:25:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:25:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208037826] [2024-06-03 22:25:13,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208037826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:25:13,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:25:13,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:25:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293606729] [2024-06-03 22:25:13,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:25:13,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:25:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:25:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:25:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:25:14,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:25:14,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 184 transitions, 1762 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) [2024-06-03 22:25:14,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:25:14,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:25:14,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:25:14,520 INFO L124 PetriNetUnfolderBase]: 515/950 cut-off events. [2024-06-03 22:25:14,520 INFO L125 PetriNetUnfolderBase]: For 138362/138362 co-relation queries the response was YES. [2024-06-03 22:25:14,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6925 conditions, 950 events. 515/950 cut-off events. For 138362/138362 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4734 event pairs, 76 based on Foata normal form. 8/958 useless extension candidates. Maximal degree in co-relation 6813. Up to 499 conditions per place. [2024-06-03 22:25:14,528 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 102 selfloop transitions, 95 changer transitions 9/208 dead transitions. [2024-06-03 22:25:14,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 208 transitions, 2436 flow [2024-06-03 22:25:14,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:25:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:25:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 22:25:14,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-03 22:25:14,529 INFO L175 Difference]: Start difference. First operand has 233 places, 184 transitions, 1762 flow. Second operand 10 states and 122 transitions. [2024-06-03 22:25:14,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 208 transitions, 2436 flow [2024-06-03 22:25:14,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 208 transitions, 2104 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-03 22:25:14,799 INFO L231 Difference]: Finished difference. Result has 229 places, 182 transitions, 1638 flow [2024-06-03 22:25:14,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1638, PETRI_PLACES=229, PETRI_TRANSITIONS=182} [2024-06-03 22:25:14,800 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-03 22:25:14,800 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 182 transitions, 1638 flow [2024-06-03 22:25:14,800 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) [2024-06-03 22:25:14,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:25:14,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:25:14,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 22:25:14,800 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)] === [2024-06-03 22:25:14,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:25:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash 133054424, now seen corresponding path program 15 times [2024-06-03 22:25:14,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:25:14,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805870512] [2024-06-03 22:25:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:25:14,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:25:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:25:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:25:19,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:25:19,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805870512] [2024-06-03 22:25:19,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805870512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:25:19,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:25:19,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:25:19,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582684006] [2024-06-03 22:25:19,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:25:19,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:25:19,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:25:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:25:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:25:20,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:25:20,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 182 transitions, 1638 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) [2024-06-03 22:25:20,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:25:20,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:25:20,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:25:20,492 INFO L124 PetriNetUnfolderBase]: 508/937 cut-off events. [2024-06-03 22:25:20,492 INFO L125 PetriNetUnfolderBase]: For 138299/138299 co-relation queries the response was YES. [2024-06-03 22:25:20,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 937 events. 508/937 cut-off events. For 138299/138299 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4651 event pairs, 74 based on Foata normal form. 8/945 useless extension candidates. Maximal degree in co-relation 6568. Up to 481 conditions per place. [2024-06-03 22:25:20,500 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 99 selfloop transitions, 92 changer transitions 13/206 dead transitions. [2024-06-03 22:25:20,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 206 transitions, 2280 flow [2024-06-03 22:25:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:25:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:25:20,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 22:25:20,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-03 22:25:20,501 INFO L175 Difference]: Start difference. First operand has 229 places, 182 transitions, 1638 flow. Second operand 10 states and 122 transitions. [2024-06-03 22:25:20,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 206 transitions, 2280 flow [2024-06-03 22:25:20,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 206 transitions, 2058 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 22:25:20,736 INFO L231 Difference]: Finished difference. Result has 227 places, 177 transitions, 1574 flow [2024-06-03 22:25:20,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1574, PETRI_PLACES=227, PETRI_TRANSITIONS=177} [2024-06-03 22:25:20,736 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-03 22:25:20,736 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 177 transitions, 1574 flow [2024-06-03 22:25:20,736 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) [2024-06-03 22:25:20,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:25:20,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:25:20,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 22:25:20,737 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)] === [2024-06-03 22:25:20,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:25:20,737 INFO L85 PathProgramCache]: Analyzing trace with hash 874535290, now seen corresponding path program 16 times [2024-06-03 22:25:20,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:25:20,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386988591] [2024-06-03 22:25:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:25:20,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:25:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:25:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:25:25,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:25:25,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386988591] [2024-06-03 22:25:25,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386988591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:25:25,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:25:25,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:25:25,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292354570] [2024-06-03 22:25:25,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:25:25,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:25:25,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:25:25,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:25:25,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:25:26,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:25:26,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 177 transitions, 1574 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) [2024-06-03 22:25:26,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:25:26,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:25:26,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:25:26,698 INFO L124 PetriNetUnfolderBase]: 521/963 cut-off events. [2024-06-03 22:25:26,699 INFO L125 PetriNetUnfolderBase]: For 172773/172773 co-relation queries the response was YES. [2024-06-03 22:25:26,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7517 conditions, 963 events. 521/963 cut-off events. For 172773/172773 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4831 event pairs, 81 based on Foata normal form. 8/971 useless extension candidates. Maximal degree in co-relation 7406. Up to 609 conditions per place. [2024-06-03 22:25:26,706 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 69 changer transitions 7/205 dead transitions. [2024-06-03 22:25:26,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 205 transitions, 2234 flow [2024-06-03 22:25:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:25:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:25:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 22:25:26,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 22:25:26,707 INFO L175 Difference]: Start difference. First operand has 227 places, 177 transitions, 1574 flow. Second operand 11 states and 131 transitions. [2024-06-03 22:25:26,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 205 transitions, 2234 flow [2024-06-03 22:25:27,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 205 transitions, 2036 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 22:25:27,102 INFO L231 Difference]: Finished difference. Result has 222 places, 175 transitions, 1508 flow [2024-06-03 22:25:27,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1508, PETRI_PLACES=222, PETRI_TRANSITIONS=175} [2024-06-03 22:25:27,102 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-03 22:25:27,103 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 175 transitions, 1508 flow [2024-06-03 22:25:27,103 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) [2024-06-03 22:25:27,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:25:27,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:25:27,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-03 22:25:27,103 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)] === [2024-06-03 22:25:27,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:25:27,104 INFO L85 PathProgramCache]: Analyzing trace with hash 874742680, now seen corresponding path program 17 times [2024-06-03 22:25:27,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:25:27,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191989778] [2024-06-03 22:25:27,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:25:27,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:25:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:25:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:25:32,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:25:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191989778] [2024-06-03 22:25:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191989778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:25:32,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:25:32,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:25:32,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107843999] [2024-06-03 22:25:32,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:25:32,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:25:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:25:32,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:25:32,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:25:32,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:25:32,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 175 transitions, 1508 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) [2024-06-03 22:25:32,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:25:32,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:25:32,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:25:33,036 INFO L124 PetriNetUnfolderBase]: 519/961 cut-off events. [2024-06-03 22:25:33,036 INFO L125 PetriNetUnfolderBase]: For 177212/177212 co-relation queries the response was YES. [2024-06-03 22:25:33,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 961 events. 519/961 cut-off events. For 177212/177212 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4845 event pairs, 87 based on Foata normal form. 10/971 useless extension candidates. Maximal degree in co-relation 7288. Up to 683 conditions per place. [2024-06-03 22:25:33,044 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 120 selfloop transitions, 65 changer transitions 11/198 dead transitions. [2024-06-03 22:25:33,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 198 transitions, 1968 flow [2024-06-03 22:25:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:25:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:25:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 22:25:33,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 22:25:33,046 INFO L175 Difference]: Start difference. First operand has 222 places, 175 transitions, 1508 flow. Second operand 11 states and 125 transitions. [2024-06-03 22:25:33,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 198 transitions, 1968 flow [2024-06-03 22:25:33,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 198 transitions, 1830 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 22:25:33,401 INFO L231 Difference]: Finished difference. Result has 221 places, 172 transitions, 1480 flow [2024-06-03 22:25:33,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1480, PETRI_PLACES=221, PETRI_TRANSITIONS=172} [2024-06-03 22:25:33,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-03 22:25:33,401 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 172 transitions, 1480 flow [2024-06-03 22:25:33,402 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) [2024-06-03 22:25:33,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:25:33,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:25:33,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-03 22:25:33,402 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)] === [2024-06-03 22:25:33,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:25:33,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1926760164, now seen corresponding path program 18 times [2024-06-03 22:25:33,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:25:33,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840080991] [2024-06-03 22:25:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:25:33,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:25:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:25:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:25:39,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:25:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840080991] [2024-06-03 22:25:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840080991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:25:39,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:25:39,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:25:39,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639106464] [2024-06-03 22:25:39,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:25:39,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:25:39,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:25:39,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:25:39,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:25:39,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:25:39,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 172 transitions, 1480 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) [2024-06-03 22:25:39,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:25:39,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:25:39,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:25:40,574 INFO L124 PetriNetUnfolderBase]: 513/955 cut-off events. [2024-06-03 22:25:40,574 INFO L125 PetriNetUnfolderBase]: For 180306/180306 co-relation queries the response was YES. [2024-06-03 22:25:40,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7363 conditions, 955 events. 513/955 cut-off events. For 180306/180306 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4840 event pairs, 93 based on Foata normal form. 12/967 useless extension candidates. Maximal degree in co-relation 7254. Up to 654 conditions per place. [2024-06-03 22:25:40,581 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 63 changer transitions 9/196 dead transitions. [2024-06-03 22:25:40,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 196 transitions, 1970 flow [2024-06-03 22:25:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 22:25:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 22:25:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 22:25:40,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 22:25:40,582 INFO L175 Difference]: Start difference. First operand has 221 places, 172 transitions, 1480 flow. Second operand 12 states and 135 transitions. [2024-06-03 22:25:40,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 196 transitions, 1970 flow [2024-06-03 22:25:40,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 196 transitions, 1836 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 22:25:40,878 INFO L231 Difference]: Finished difference. Result has 220 places, 170 transitions, 1491 flow [2024-06-03 22:25:40,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1491, PETRI_PLACES=220, PETRI_TRANSITIONS=170} [2024-06-03 22:25:40,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-03 22:25:40,879 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 170 transitions, 1491 flow [2024-06-03 22:25:40,879 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) [2024-06-03 22:25:40,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:25:40,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:25:40,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-03 22:25:40,879 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)] === [2024-06-03 22:25:40,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:25:40,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1926754584, now seen corresponding path program 19 times [2024-06-03 22:25:40,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:25:40,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288443992] [2024-06-03 22:25:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:25:40,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:25:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:25:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:25:45,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:25:45,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288443992] [2024-06-03 22:25:45,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288443992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:25:45,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:25:45,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:25:45,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068492705] [2024-06-03 22:25:45,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:25:45,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:25:45,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:25:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:25:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:25:46,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:25:46,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 170 transitions, 1491 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) [2024-06-03 22:25:46,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:25:46,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:25:46,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:25:46,808 INFO L124 PetriNetUnfolderBase]: 530/994 cut-off events. [2024-06-03 22:25:46,809 INFO L125 PetriNetUnfolderBase]: For 196222/196222 co-relation queries the response was YES. [2024-06-03 22:25:46,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8231 conditions, 994 events. 530/994 cut-off events. For 196222/196222 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5101 event pairs, 102 based on Foata normal form. 8/1002 useless extension candidates. Maximal degree in co-relation 8123. Up to 638 conditions per place. [2024-06-03 22:25:46,816 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 59 changer transitions 8/195 dead transitions. [2024-06-03 22:25:46,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 195 transitions, 2117 flow [2024-06-03 22:25:46,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:25:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:25:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 22:25:46,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 22:25:46,817 INFO L175 Difference]: Start difference. First operand has 220 places, 170 transitions, 1491 flow. Second operand 11 states and 127 transitions. [2024-06-03 22:25:46,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 195 transitions, 2117 flow [2024-06-03 22:25:47,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 195 transitions, 1959 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-03 22:25:47,150 INFO L231 Difference]: Finished difference. Result has 219 places, 167 transitions, 1436 flow [2024-06-03 22:25:47,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1436, PETRI_PLACES=219, PETRI_TRANSITIONS=167} [2024-06-03 22:25:47,151 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-03 22:25:47,151 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 167 transitions, 1436 flow [2024-06-03 22:25:47,151 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) [2024-06-03 22:25:47,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:25:47,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:25:47,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-03 22:25:47,152 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)] === [2024-06-03 22:25:47,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:25:47,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1727452794, now seen corresponding path program 20 times [2024-06-03 22:25:47,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:25:47,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950212623] [2024-06-03 22:25:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:25:47,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:25:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:25:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:25:52,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:25:52,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950212623] [2024-06-03 22:25:52,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950212623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:25:52,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:25:52,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:25:52,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889407329] [2024-06-03 22:25:52,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:25:52,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:25:52,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:25:52,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:25:52,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:25:52,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:25:52,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 167 transitions, 1436 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) [2024-06-03 22:25:52,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:25:52,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:25:52,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:25:52,906 INFO L124 PetriNetUnfolderBase]: 552/1040 cut-off events. [2024-06-03 22:25:52,906 INFO L125 PetriNetUnfolderBase]: For 229306/229306 co-relation queries the response was YES. [2024-06-03 22:25:52,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9085 conditions, 1040 events. 552/1040 cut-off events. For 229306/229306 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5440 event pairs, 105 based on Foata normal form. 8/1048 useless extension candidates. Maximal degree in co-relation 8977. Up to 568 conditions per place. [2024-06-03 22:25:52,915 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 101 changer transitions 7/194 dead transitions. [2024-06-03 22:25:52,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 194 transitions, 2066 flow [2024-06-03 22:25:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:25:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:25:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 22:25:52,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 22:25:52,917 INFO L175 Difference]: Start difference. First operand has 219 places, 167 transitions, 1436 flow. Second operand 10 states and 124 transitions. [2024-06-03 22:25:52,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 194 transitions, 2066 flow [2024-06-03 22:25:53,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 194 transitions, 1940 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 22:25:53,290 INFO L231 Difference]: Finished difference. Result has 215 places, 165 transitions, 1508 flow [2024-06-03 22:25:53,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1508, PETRI_PLACES=215, PETRI_TRANSITIONS=165} [2024-06-03 22:25:53,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-03 22:25:53,291 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 165 transitions, 1508 flow [2024-06-03 22:25:53,291 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) [2024-06-03 22:25:53,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:25:53,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:25:53,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-03 22:25:53,291 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)] === [2024-06-03 22:25:53,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:25:53,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1926961974, now seen corresponding path program 21 times [2024-06-03 22:25:53,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:25:53,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546067838] [2024-06-03 22:25:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:25:53,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:25:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:25:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:25:58,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:25:58,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546067838] [2024-06-03 22:25:58,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546067838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:25:58,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:25:58,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:25:58,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291116419] [2024-06-03 22:25:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:25:58,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:25:58,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:25:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:25:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:25:58,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:25:58,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 165 transitions, 1508 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) [2024-06-03 22:25:58,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:25:58,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:25:58,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:25:58,753 INFO L124 PetriNetUnfolderBase]: 550/1038 cut-off events. [2024-06-03 22:25:58,753 INFO L125 PetriNetUnfolderBase]: For 223656/223656 co-relation queries the response was YES. [2024-06-03 22:25:58,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9080 conditions, 1038 events. 550/1038 cut-off events. For 223656/223656 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5428 event pairs, 129 based on Foata normal form. 10/1048 useless extension candidates. Maximal degree in co-relation 8974. Up to 760 conditions per place. [2024-06-03 22:25:58,762 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 55 changer transitions 11/186 dead transitions. [2024-06-03 22:25:58,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 186 transitions, 1940 flow [2024-06-03 22:25:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:25:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:25:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 22:25:58,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-03 22:25:58,763 INFO L175 Difference]: Start difference. First operand has 215 places, 165 transitions, 1508 flow. Second operand 11 states and 124 transitions. [2024-06-03 22:25:58,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 186 transitions, 1940 flow [2024-06-03 22:25:59,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 186 transitions, 1736 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 22:25:59,115 INFO L231 Difference]: Finished difference. Result has 215 places, 162 transitions, 1393 flow [2024-06-03 22:25:59,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1393, PETRI_PLACES=215, PETRI_TRANSITIONS=162} [2024-06-03 22:25:59,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-03 22:25:59,116 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 162 transitions, 1393 flow [2024-06-03 22:25:59,116 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) [2024-06-03 22:25:59,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:25:59,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:25:59,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-03 22:25:59,116 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)] === [2024-06-03 22:25:59,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:25:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash 874750616, now seen corresponding path program 1 times [2024-06-03 22:25:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:25:59,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447271653] [2024-06-03 22:25:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:25:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:25:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:26:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:26:04,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:26:04,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447271653] [2024-06-03 22:26:04,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447271653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:26:04,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:26:04,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:26:04,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200483727] [2024-06-03 22:26:04,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:26:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:26:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:26:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:26:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:26:04,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:26:04,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 162 transitions, 1393 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) [2024-06-03 22:26:04,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:26:04,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:26:04,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:26:05,426 INFO L124 PetriNetUnfolderBase]: 521/983 cut-off events. [2024-06-03 22:26:05,427 INFO L125 PetriNetUnfolderBase]: For 188117/188117 co-relation queries the response was YES. [2024-06-03 22:26:05,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8544 conditions, 983 events. 521/983 cut-off events. For 188117/188117 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5081 event pairs, 114 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 8439. Up to 749 conditions per place. [2024-06-03 22:26:05,433 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 64 changer transitions 0/179 dead transitions. [2024-06-03 22:26:05,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 179 transitions, 1791 flow [2024-06-03 22:26:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:26:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:26:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 22:26:05,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 22:26:05,435 INFO L175 Difference]: Start difference. First operand has 215 places, 162 transitions, 1393 flow. Second operand 10 states and 112 transitions. [2024-06-03 22:26:05,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 179 transitions, 1791 flow [2024-06-03 22:26:05,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 179 transitions, 1659 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-03 22:26:05,731 INFO L231 Difference]: Finished difference. Result has 212 places, 162 transitions, 1393 flow [2024-06-03 22:26:05,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1393, PETRI_PLACES=212, PETRI_TRANSITIONS=162} [2024-06-03 22:26:05,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-03 22:26:05,732 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 162 transitions, 1393 flow [2024-06-03 22:26:05,732 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) [2024-06-03 22:26:05,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:26:05,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:26:05,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-03 22:26:05,732 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)] === [2024-06-03 22:26:05,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:26:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1581760202, now seen corresponding path program 22 times [2024-06-03 22:26:05,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:26:05,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664862255] [2024-06-03 22:26:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:26:05,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:26:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:26:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:26:10,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:26:10,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664862255] [2024-06-03 22:26:10,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664862255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:26:10,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:26:10,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:26:10,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389832468] [2024-06-03 22:26:10,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:26:10,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:26:10,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:26:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:26:10,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:26:10,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:26:10,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 162 transitions, 1393 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) [2024-06-03 22:26:10,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:26:10,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:26:10,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:26:11,063 INFO L124 PetriNetUnfolderBase]: 508/960 cut-off events. [2024-06-03 22:26:11,063 INFO L125 PetriNetUnfolderBase]: For 177128/177128 co-relation queries the response was YES. [2024-06-03 22:26:11,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7642 conditions, 960 events. 508/960 cut-off events. For 177128/177128 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4918 event pairs, 93 based on Foata normal form. 10/970 useless extension candidates. Maximal degree in co-relation 7538. Up to 557 conditions per place. [2024-06-03 22:26:11,071 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 93 changer transitions 15/184 dead transitions. [2024-06-03 22:26:11,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 184 transitions, 1823 flow [2024-06-03 22:26:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:26:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:26:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 22:26:11,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 22:26:11,072 INFO L175 Difference]: Start difference. First operand has 212 places, 162 transitions, 1393 flow. Second operand 10 states and 118 transitions. [2024-06-03 22:26:11,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 184 transitions, 1823 flow [2024-06-03 22:26:11,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 184 transitions, 1695 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-03 22:26:11,342 INFO L231 Difference]: Finished difference. Result has 213 places, 156 transitions, 1417 flow [2024-06-03 22:26:11,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1417, PETRI_PLACES=213, PETRI_TRANSITIONS=156} [2024-06-03 22:26:11,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-03 22:26:11,343 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 156 transitions, 1417 flow [2024-06-03 22:26:11,343 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) [2024-06-03 22:26:11,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:26:11,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:26:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-03 22:26:11,343 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)] === [2024-06-03 22:26:11,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:26:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1727308644, now seen corresponding path program 23 times [2024-06-03 22:26:11,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:26:11,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787930059] [2024-06-03 22:26:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:26:11,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:26:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:26:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:26:16,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:26:16,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787930059] [2024-06-03 22:26:16,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787930059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:26:16,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:26:16,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:26:16,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655936053] [2024-06-03 22:26:16,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:26:16,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:26:16,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:26:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:26:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:26:16,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:26:16,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 156 transitions, 1417 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) [2024-06-03 22:26:16,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:26:16,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:26:16,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:26:16,724 INFO L124 PetriNetUnfolderBase]: 506/966 cut-off events. [2024-06-03 22:26:16,725 INFO L125 PetriNetUnfolderBase]: For 194108/194108 co-relation queries the response was YES. [2024-06-03 22:26:16,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8215 conditions, 966 events. 506/966 cut-off events. For 194108/194108 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4973 event pairs, 94 based on Foata normal form. 8/974 useless extension candidates. Maximal degree in co-relation 8110. Up to 313 conditions per place. [2024-06-03 22:26:16,733 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 87 changer transitions 17/181 dead transitions. [2024-06-03 22:26:16,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 181 transitions, 2003 flow [2024-06-03 22:26:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:26:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:26:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 22:26:16,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 22:26:16,734 INFO L175 Difference]: Start difference. First operand has 213 places, 156 transitions, 1417 flow. Second operand 10 states and 118 transitions. [2024-06-03 22:26:16,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 181 transitions, 2003 flow [2024-06-03 22:26:16,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 181 transitions, 1805 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-03 22:26:16,984 INFO L231 Difference]: Finished difference. Result has 208 places, 146 transitions, 1334 flow [2024-06-03 22:26:16,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1334, PETRI_PLACES=208, PETRI_TRANSITIONS=146} [2024-06-03 22:26:16,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-03 22:26:16,984 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 146 transitions, 1334 flow [2024-06-03 22:26:16,985 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) [2024-06-03 22:26:16,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:26:16,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:26:16,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-03 22:26:16,985 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)] === [2024-06-03 22:26:16,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:26:16,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1934379220, now seen corresponding path program 2 times [2024-06-03 22:26:16,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:26:16,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962031626] [2024-06-03 22:26:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:26:16,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:26:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:26:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:26:22,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:26:22,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962031626] [2024-06-03 22:26:22,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962031626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:26:22,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:26:22,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:26:22,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917027987] [2024-06-03 22:26:22,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:26:22,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:26:22,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:26:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:26:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:26:22,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:26:22,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 146 transitions, 1334 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) [2024-06-03 22:26:22,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:26:22,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:26:22,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:26:22,704 INFO L124 PetriNetUnfolderBase]: 473/899 cut-off events. [2024-06-03 22:26:22,704 INFO L125 PetriNetUnfolderBase]: For 167211/167211 co-relation queries the response was YES. [2024-06-03 22:26:22,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7941 conditions, 899 events. 473/899 cut-off events. For 167211/167211 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4524 event pairs, 112 based on Foata normal form. 2/901 useless extension candidates. Maximal degree in co-relation 7838. Up to 554 conditions per place. [2024-06-03 22:26:22,716 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 75 changer transitions 0/161 dead transitions. [2024-06-03 22:26:22,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 161 transitions, 1722 flow [2024-06-03 22:26:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:26:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:26:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 22:26:22,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-03 22:26:22,718 INFO L175 Difference]: Start difference. First operand has 208 places, 146 transitions, 1334 flow. Second operand 10 states and 109 transitions. [2024-06-03 22:26:22,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 161 transitions, 1722 flow [2024-06-03 22:26:23,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 161 transitions, 1568 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 22:26:23,038 INFO L231 Difference]: Finished difference. Result has 198 places, 147 transitions, 1370 flow [2024-06-03 22:26:23,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1370, PETRI_PLACES=198, PETRI_TRANSITIONS=147} [2024-06-03 22:26:23,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-03 22:26:23,038 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 147 transitions, 1370 flow [2024-06-03 22:26:23,039 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) [2024-06-03 22:26:23,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:26:23,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:26:23,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-03 22:26:23,039 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)] === [2024-06-03 22:26:23,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:26:23,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1934111814, now seen corresponding path program 24 times [2024-06-03 22:26:23,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:26:23,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545791984] [2024-06-03 22:26:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:26:23,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:26:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:26:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:26:28,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:26:28,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545791984] [2024-06-03 22:26:28,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545791984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:26:28,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:26:28,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:26:28,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130178606] [2024-06-03 22:26:28,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:26:28,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:26:28,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:26:28,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:26:28,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:26:28,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:26:28,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 147 transitions, 1370 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) [2024-06-03 22:26:28,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:26:28,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:26:28,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:26:28,853 INFO L124 PetriNetUnfolderBase]: 460/876 cut-off events. [2024-06-03 22:26:28,853 INFO L125 PetriNetUnfolderBase]: For 143808/143808 co-relation queries the response was YES. [2024-06-03 22:26:28,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7006 conditions, 876 events. 460/876 cut-off events. For 143808/143808 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4378 event pairs, 97 based on Foata normal form. 10/886 useless extension candidates. Maximal degree in co-relation 6907. Up to 598 conditions per place. [2024-06-03 22:26:28,860 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 101 selfloop transitions, 53 changer transitions 11/167 dead transitions. [2024-06-03 22:26:28,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 167 transitions, 1760 flow [2024-06-03 22:26:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:26:28,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:26:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 22:26:28,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 22:26:28,861 INFO L175 Difference]: Start difference. First operand has 198 places, 147 transitions, 1370 flow. Second operand 11 states and 120 transitions. [2024-06-03 22:26:28,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 167 transitions, 1760 flow [2024-06-03 22:26:29,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 167 transitions, 1580 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-03 22:26:29,042 INFO L231 Difference]: Finished difference. Result has 201 places, 144 transitions, 1273 flow [2024-06-03 22:26:29,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1273, PETRI_PLACES=201, PETRI_TRANSITIONS=144} [2024-06-03 22:26:29,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-03 22:26:29,043 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 144 transitions, 1273 flow [2024-06-03 22:26:29,043 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) [2024-06-03 22:26:29,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:26:29,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:26:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-03 22:26:29,043 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)] === [2024-06-03 22:26:29,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:26:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1788690348, now seen corresponding path program 3 times [2024-06-03 22:26:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:26:29,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879333382] [2024-06-03 22:26:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:26:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:26:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:26:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:26:34,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:26:34,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879333382] [2024-06-03 22:26:34,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879333382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:26:34,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:26:34,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:26:34,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645410276] [2024-06-03 22:26:34,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:26:34,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:26:34,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:26:34,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:26:34,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:26:34,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:26:34,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 144 transitions, 1273 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) [2024-06-03 22:26:34,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:26:34,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:26:34,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:26:34,792 INFO L124 PetriNetUnfolderBase]: 445/847 cut-off events. [2024-06-03 22:26:34,792 INFO L125 PetriNetUnfolderBase]: For 133346/133346 co-relation queries the response was YES. [2024-06-03 22:26:34,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7117 conditions, 847 events. 445/847 cut-off events. For 133346/133346 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4197 event pairs, 98 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 7017. Up to 459 conditions per place. [2024-06-03 22:26:34,799 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 77 changer transitions 0/161 dead transitions. [2024-06-03 22:26:34,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 161 transitions, 1847 flow [2024-06-03 22:26:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:26:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:26:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-03 22:26:34,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 22:26:34,801 INFO L175 Difference]: Start difference. First operand has 201 places, 144 transitions, 1273 flow. Second operand 10 states and 110 transitions. [2024-06-03 22:26:34,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 161 transitions, 1847 flow [2024-06-03 22:26:34,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 161 transitions, 1733 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 22:26:34,993 INFO L231 Difference]: Finished difference. Result has 197 places, 146 transitions, 1396 flow [2024-06-03 22:26:34,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1396, PETRI_PLACES=197, PETRI_TRANSITIONS=146} [2024-06-03 22:26:34,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-03 22:26:34,993 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 146 transitions, 1396 flow [2024-06-03 22:26:34,993 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) [2024-06-03 22:26:34,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:26:34,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:26:34,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-03 22:26:34,994 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)] === [2024-06-03 22:26:34,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:26:34,994 INFO L85 PathProgramCache]: Analyzing trace with hash 728842698, now seen corresponding path program 25 times [2024-06-03 22:26:34,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:26:34,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302945231] [2024-06-03 22:26:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:26:34,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:26:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:26:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:26:39,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:26:39,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302945231] [2024-06-03 22:26:39,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302945231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:26:39,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:26:39,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:26:39,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706488976] [2024-06-03 22:26:39,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:26:39,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:26:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:26:39,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:26:39,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:26:39,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:26:39,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 146 transitions, 1396 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) [2024-06-03 22:26:39,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:26:39,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:26:39,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:26:40,488 INFO L124 PetriNetUnfolderBase]: 432/824 cut-off events. [2024-06-03 22:26:40,489 INFO L125 PetriNetUnfolderBase]: For 123360/123360 co-relation queries the response was YES. [2024-06-03 22:26:40,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6380 conditions, 824 events. 432/824 cut-off events. For 123360/123360 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4066 event pairs, 83 based on Foata normal form. 10/834 useless extension candidates. Maximal degree in co-relation 6281. Up to 545 conditions per place. [2024-06-03 22:26:40,495 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 97 selfloop transitions, 57 changer transitions 13/169 dead transitions. [2024-06-03 22:26:40,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 169 transitions, 1798 flow [2024-06-03 22:26:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:26:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:26:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 22:26:40,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-03 22:26:40,497 INFO L175 Difference]: Start difference. First operand has 197 places, 146 transitions, 1396 flow. Second operand 11 states and 123 transitions. [2024-06-03 22:26:40,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 169 transitions, 1798 flow [2024-06-03 22:26:40,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 169 transitions, 1589 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-03 22:26:40,709 INFO L231 Difference]: Finished difference. Result has 197 places, 142 transitions, 1272 flow [2024-06-03 22:26:40,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1272, PETRI_PLACES=197, PETRI_TRANSITIONS=142} [2024-06-03 22:26:40,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-03 22:26:40,710 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 142 transitions, 1272 flow [2024-06-03 22:26:40,710 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) [2024-06-03 22:26:40,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:26:40,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:26:40,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-03 22:26:40,710 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)] === [2024-06-03 22:26:40,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:26:40,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1732820754, now seen corresponding path program 26 times [2024-06-03 22:26:40,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:26:40,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111663118] [2024-06-03 22:26:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:26:40,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:26:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:26:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:26:45,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:26:45,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111663118] [2024-06-03 22:26:45,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111663118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:26:45,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:26:45,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:26:45,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777441871] [2024-06-03 22:26:45,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:26:45,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:26:45,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:26:45,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:26:45,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:26:45,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:26:45,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 142 transitions, 1272 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) [2024-06-03 22:26:45,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:26:45,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:26:45,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:26:46,211 INFO L124 PetriNetUnfolderBase]: 423/809 cut-off events. [2024-06-03 22:26:46,212 INFO L125 PetriNetUnfolderBase]: For 126148/126148 co-relation queries the response was YES. [2024-06-03 22:26:46,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6094 conditions, 809 events. 423/809 cut-off events. For 126148/126148 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3950 event pairs, 87 based on Foata normal form. 10/819 useless extension candidates. Maximal degree in co-relation 5998. Up to 522 conditions per place. [2024-06-03 22:26:46,217 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 51 changer transitions 11/164 dead transitions. [2024-06-03 22:26:46,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 164 transitions, 1664 flow [2024-06-03 22:26:46,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:26:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:26:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 22:26:46,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 22:26:46,218 INFO L175 Difference]: Start difference. First operand has 197 places, 142 transitions, 1272 flow. Second operand 11 states and 125 transitions. [2024-06-03 22:26:46,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 164 transitions, 1664 flow [2024-06-03 22:26:46,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 164 transitions, 1544 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 22:26:46,399 INFO L231 Difference]: Finished difference. Result has 192 places, 139 transitions, 1233 flow [2024-06-03 22:26:46,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1233, PETRI_PLACES=192, PETRI_TRANSITIONS=139} [2024-06-03 22:26:46,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-03 22:26:46,400 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 139 transitions, 1233 flow [2024-06-03 22:26:46,400 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) [2024-06-03 22:26:46,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:26:46,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:26:46,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-03 22:26:46,400 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)] === [2024-06-03 22:26:46,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:26:46,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1587117002, now seen corresponding path program 27 times [2024-06-03 22:26:46,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:26:46,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200582372] [2024-06-03 22:26:46,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:26:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:26:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:26:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:26:51,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:26:51,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200582372] [2024-06-03 22:26:51,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200582372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:26:51,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:26:51,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:26:51,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116510104] [2024-06-03 22:26:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:26:51,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:26:51,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:26:51,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:26:51,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:26:51,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:26:51,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 139 transitions, 1233 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) [2024-06-03 22:26:51,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:26:51,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:26:51,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:26:52,072 INFO L124 PetriNetUnfolderBase]: 440/848 cut-off events. [2024-06-03 22:26:52,072 INFO L125 PetriNetUnfolderBase]: For 140180/140180 co-relation queries the response was YES. [2024-06-03 22:26:52,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6781 conditions, 848 events. 440/848 cut-off events. For 140180/140180 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4230 event pairs, 96 based on Foata normal form. 8/856 useless extension candidates. Maximal degree in co-relation 6687. Up to 506 conditions per place. [2024-06-03 22:26:52,079 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 49 changer transitions 8/165 dead transitions. [2024-06-03 22:26:52,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 165 transitions, 1783 flow [2024-06-03 22:26:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:26:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:26:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 22:26:52,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 22:26:52,080 INFO L175 Difference]: Start difference. First operand has 192 places, 139 transitions, 1233 flow. Second operand 11 states and 127 transitions. [2024-06-03 22:26:52,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 165 transitions, 1783 flow [2024-06-03 22:26:52,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 165 transitions, 1673 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 22:26:52,245 INFO L231 Difference]: Finished difference. Result has 190 places, 136 transitions, 1207 flow [2024-06-03 22:26:52,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1207, PETRI_PLACES=190, PETRI_TRANSITIONS=136} [2024-06-03 22:26:52,245 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-03 22:26:52,245 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 136 transitions, 1207 flow [2024-06-03 22:26:52,245 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) [2024-06-03 22:26:52,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:26:52,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:26:52,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-03 22:26:52,246 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)] === [2024-06-03 22:26:52,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:26:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash -546260532, now seen corresponding path program 28 times [2024-06-03 22:26:52,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:26:52,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770558124] [2024-06-03 22:26:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:26:52,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:26:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:26:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:26:57,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:26:57,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770558124] [2024-06-03 22:26:57,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770558124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:26:57,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:26:57,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:26:57,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836492954] [2024-06-03 22:26:57,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:26:57,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:26:57,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:26:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:26:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:26:57,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:26:57,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 136 transitions, 1207 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) [2024-06-03 22:26:57,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:26:57,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:26:57,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:26:57,725 INFO L124 PetriNetUnfolderBase]: 408/784 cut-off events. [2024-06-03 22:26:57,725 INFO L125 PetriNetUnfolderBase]: For 116165/116165 co-relation queries the response was YES. [2024-06-03 22:26:57,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5848 conditions, 784 events. 408/784 cut-off events. For 116165/116165 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3785 event pairs, 87 based on Foata normal form. 10/794 useless extension candidates. Maximal degree in co-relation 5755. Up to 506 conditions per place. [2024-06-03 22:26:57,731 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 47 changer transitions 11/157 dead transitions. [2024-06-03 22:26:57,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 157 transitions, 1581 flow [2024-06-03 22:26:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:26:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:26:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 22:26:57,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 22:26:57,732 INFO L175 Difference]: Start difference. First operand has 190 places, 136 transitions, 1207 flow. Second operand 11 states and 121 transitions. [2024-06-03 22:26:57,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 157 transitions, 1581 flow [2024-06-03 22:26:57,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 157 transitions, 1479 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 22:26:57,884 INFO L231 Difference]: Finished difference. Result has 187 places, 133 transitions, 1175 flow [2024-06-03 22:26:57,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1175, PETRI_PLACES=187, PETRI_TRANSITIONS=133} [2024-06-03 22:26:57,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-03 22:26:57,884 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 133 transitions, 1175 flow [2024-06-03 22:26:57,884 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) [2024-06-03 22:26:57,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:26:57,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:26:57,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-03 22:26:57,885 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)] === [2024-06-03 22:26:57,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:26:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash 185108166, now seen corresponding path program 4 times [2024-06-03 22:26:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:26:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908873093] [2024-06-03 22:26:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:26:57,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:26:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:27:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:27:03,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:27:03,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908873093] [2024-06-03 22:27:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908873093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:27:03,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:27:03,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 22:27:03,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531647024] [2024-06-03 22:27:03,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:27:03,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 22:27:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:27:03,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 22:27:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 22:27:03,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:27:03,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 133 transitions, 1175 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) [2024-06-03 22:27:03,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:27:03,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:27:03,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:27:03,785 INFO L124 PetriNetUnfolderBase]: 379/729 cut-off events. [2024-06-03 22:27:03,786 INFO L125 PetriNetUnfolderBase]: For 85853/85853 co-relation queries the response was YES. [2024-06-03 22:27:03,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 729 events. 379/729 cut-off events. For 85853/85853 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3449 event pairs, 88 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 5335. Up to 418 conditions per place. [2024-06-03 22:27:03,791 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 59 changer transitions 0/148 dead transitions. [2024-06-03 22:27:03,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 148 transitions, 1507 flow [2024-06-03 22:27:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:27:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:27:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 22:27:03,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-03 22:27:03,792 INFO L175 Difference]: Start difference. First operand has 187 places, 133 transitions, 1175 flow. Second operand 10 states and 109 transitions. [2024-06-03 22:27:03,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 148 transitions, 1507 flow [2024-06-03 22:27:03,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 148 transitions, 1393 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-03 22:27:03,917 INFO L231 Difference]: Finished difference. Result has 183 places, 133 transitions, 1183 flow [2024-06-03 22:27:03,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=183, PETRI_TRANSITIONS=133} [2024-06-03 22:27:03,917 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-03 22:27:03,917 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 133 transitions, 1183 flow [2024-06-03 22:27:03,918 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) [2024-06-03 22:27:03,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:27:03,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:27:03,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-03 22:27:03,918 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)] === [2024-06-03 22:27:03,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:27:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash 442218408, now seen corresponding path program 5 times [2024-06-03 22:27:03,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:27:03,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542093160] [2024-06-03 22:27:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:27:03,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:27:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:27:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:27:09,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:27:09,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542093160] [2024-06-03 22:27:09,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542093160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:27:09,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:27:09,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:27:09,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514053534] [2024-06-03 22:27:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:27:09,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:27:09,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:27:09,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:27:09,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:27:09,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:27:09,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 133 transitions, 1183 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) [2024-06-03 22:27:09,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:27:09,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:27:09,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:27:10,279 INFO L124 PetriNetUnfolderBase]: 383/737 cut-off events. [2024-06-03 22:27:10,279 INFO L125 PetriNetUnfolderBase]: For 83454/83454 co-relation queries the response was YES. [2024-06-03 22:27:10,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5459 conditions, 737 events. 383/737 cut-off events. For 83454/83454 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3514 event pairs, 87 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 5369. Up to 666 conditions per place. [2024-06-03 22:27:10,285 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 120 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-03 22:27:10,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 148 transitions, 1537 flow [2024-06-03 22:27:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:27:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:27:10,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 22:27:10,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-03 22:27:10,287 INFO L175 Difference]: Start difference. First operand has 183 places, 133 transitions, 1183 flow. Second operand 10 states and 107 transitions. [2024-06-03 22:27:10,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 148 transitions, 1537 flow [2024-06-03 22:27:10,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 148 transitions, 1398 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 22:27:10,424 INFO L231 Difference]: Finished difference. Result has 183 places, 134 transitions, 1128 flow [2024-06-03 22:27:10,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1128, PETRI_PLACES=183, PETRI_TRANSITIONS=134} [2024-06-03 22:27:10,425 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-03 22:27:10,425 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 134 transitions, 1128 flow [2024-06-03 22:27:10,425 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) [2024-06-03 22:27:10,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:27:10,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:27:10,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-03 22:27:10,425 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)] === [2024-06-03 22:27:10,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:27:10,426 INFO L85 PathProgramCache]: Analyzing trace with hash 442210472, now seen corresponding path program 29 times [2024-06-03 22:27:10,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:27:10,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153562676] [2024-06-03 22:27:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:27:10,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:27:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:27:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:27:15,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:27:15,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153562676] [2024-06-03 22:27:15,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153562676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:27:15,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:27:15,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:27:15,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171667334] [2024-06-03 22:27:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:27:15,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:27:15,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:27:15,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:27:15,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:27:15,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:27:15,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 134 transitions, 1128 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) [2024-06-03 22:27:15,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:27:15,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:27:15,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:27:16,224 INFO L124 PetriNetUnfolderBase]: 399/773 cut-off events. [2024-06-03 22:27:16,224 INFO L125 PetriNetUnfolderBase]: For 104812/104812 co-relation queries the response was YES. [2024-06-03 22:27:16,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5491 conditions, 773 events. 399/773 cut-off events. For 104812/104812 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3770 event pairs, 91 based on Foata normal form. 10/783 useless extension candidates. Maximal degree in co-relation 5401. Up to 658 conditions per place. [2024-06-03 22:27:16,229 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 24 changer transitions 11/154 dead transitions. [2024-06-03 22:27:16,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 154 transitions, 1492 flow [2024-06-03 22:27:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:27:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:27:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 22:27:16,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-03 22:27:16,230 INFO L175 Difference]: Start difference. First operand has 183 places, 134 transitions, 1128 flow. Second operand 11 states and 119 transitions. [2024-06-03 22:27:16,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 154 transitions, 1492 flow [2024-06-03 22:27:16,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 154 transitions, 1418 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 22:27:16,367 INFO L231 Difference]: Finished difference. Result has 186 places, 131 transitions, 1080 flow [2024-06-03 22:27:16,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1080, PETRI_PLACES=186, PETRI_TRANSITIONS=131} [2024-06-03 22:27:16,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-03 22:27:16,367 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 131 transitions, 1080 flow [2024-06-03 22:27:16,367 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) [2024-06-03 22:27:16,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:27:16,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:27:16,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-03 22:27:16,367 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)] === [2024-06-03 22:27:16,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:27:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash 442008662, now seen corresponding path program 30 times [2024-06-03 22:27:16,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:27:16,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211853178] [2024-06-03 22:27:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:27:16,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:27:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:27:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:27:21,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:27:21,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211853178] [2024-06-03 22:27:21,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211853178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:27:21,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:27:21,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:27:21,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631855745] [2024-06-03 22:27:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:27:21,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:27:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:27:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:27:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:27:21,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:27:21,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 131 transitions, 1080 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) [2024-06-03 22:27:21,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:27:21,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:27:21,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:27:21,690 INFO L124 PetriNetUnfolderBase]: 389/759 cut-off events. [2024-06-03 22:27:21,690 INFO L125 PetriNetUnfolderBase]: For 107583/107583 co-relation queries the response was YES. [2024-06-03 22:27:21,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 759 events. 389/759 cut-off events. For 107583/107583 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3694 event pairs, 91 based on Foata normal form. 10/769 useless extension candidates. Maximal degree in co-relation 5307. Up to 643 conditions per place. [2024-06-03 22:27:21,696 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 24 changer transitions 11/151 dead transitions. [2024-06-03 22:27:21,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 151 transitions, 1438 flow [2024-06-03 22:27:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:27:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:27:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 22:27:21,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 22:27:21,697 INFO L175 Difference]: Start difference. First operand has 186 places, 131 transitions, 1080 flow. Second operand 11 states and 120 transitions. [2024-06-03 22:27:21,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 151 transitions, 1438 flow [2024-06-03 22:27:21,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 151 transitions, 1386 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 22:27:21,825 INFO L231 Difference]: Finished difference. Result has 184 places, 128 transitions, 1055 flow [2024-06-03 22:27:21,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1055, PETRI_PLACES=184, PETRI_TRANSITIONS=128} [2024-06-03 22:27:21,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-03 22:27:21,826 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 128 transitions, 1055 flow [2024-06-03 22:27:21,826 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) [2024-06-03 22:27:21,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:27:21,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:27:21,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-03 22:27:21,826 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)] === [2024-06-03 22:27:21,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:27:21,827 INFO L85 PathProgramCache]: Analyzing trace with hash 442003082, now seen corresponding path program 31 times [2024-06-03 22:27:21,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:27:21,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010789231] [2024-06-03 22:27:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:27:21,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:27:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:27:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:27:26,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:27:26,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010789231] [2024-06-03 22:27:26,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010789231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:27:26,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:27:26,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:27:26,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843136268] [2024-06-03 22:27:26,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:27:26,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:27:26,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:27:26,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:27:26,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:27:27,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:27:27,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 128 transitions, 1055 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) [2024-06-03 22:27:27,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:27:27,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:27:27,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:27:27,579 INFO L124 PetriNetUnfolderBase]: 377/739 cut-off events. [2024-06-03 22:27:27,579 INFO L125 PetriNetUnfolderBase]: For 99681/99681 co-relation queries the response was YES. [2024-06-03 22:27:27,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5273 conditions, 739 events. 377/739 cut-off events. For 99681/99681 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3585 event pairs, 79 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 5183. Up to 633 conditions per place. [2024-06-03 22:27:27,584 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 22 changer transitions 11/147 dead transitions. [2024-06-03 22:27:27,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 147 transitions, 1397 flow [2024-06-03 22:27:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 22:27:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 22:27:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 22:27:27,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-03 22:27:27,585 INFO L175 Difference]: Start difference. First operand has 184 places, 128 transitions, 1055 flow. Second operand 11 states and 117 transitions. [2024-06-03 22:27:27,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 147 transitions, 1397 flow [2024-06-03 22:27:27,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 147 transitions, 1345 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 22:27:27,716 INFO L231 Difference]: Finished difference. Result has 182 places, 125 transitions, 1029 flow [2024-06-03 22:27:27,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1029, PETRI_PLACES=182, PETRI_TRANSITIONS=125} [2024-06-03 22:27:27,717 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-03 22:27:27,717 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 125 transitions, 1029 flow [2024-06-03 22:27:27,717 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) [2024-06-03 22:27:27,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:27:27,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:27:27,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-03 22:27:27,717 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)] === [2024-06-03 22:27:27,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:27:27,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1405676022, now seen corresponding path program 6 times [2024-06-03 22:27:27,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:27:27,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863359754] [2024-06-03 22:27:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:27:27,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:27:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:27:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:27:33,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:27:33,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863359754] [2024-06-03 22:27:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863359754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:27:33,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:27:33,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:27:33,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662384341] [2024-06-03 22:27:33,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:27:33,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:27:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:27:33,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:27:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:27:34,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:27:34,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 125 transitions, 1029 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) [2024-06-03 22:27:34,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:27:34,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:27:34,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:27:34,493 INFO L124 PetriNetUnfolderBase]: 369/719 cut-off events. [2024-06-03 22:27:34,493 INFO L125 PetriNetUnfolderBase]: For 88173/88173 co-relation queries the response was YES. [2024-06-03 22:27:34,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 719 events. 369/719 cut-off events. For 88173/88173 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3446 event pairs, 89 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 5337. Up to 648 conditions per place. [2024-06-03 22:27:34,498 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 21 changer transitions 0/141 dead transitions. [2024-06-03 22:27:34,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 141 transitions, 1531 flow [2024-06-03 22:27:34,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:27:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:27:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-03 22:27:34,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-03 22:27:34,500 INFO L175 Difference]: Start difference. First operand has 182 places, 125 transitions, 1029 flow. Second operand 10 states and 102 transitions. [2024-06-03 22:27:34,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 141 transitions, 1531 flow [2024-06-03 22:27:34,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 141 transitions, 1475 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 22:27:34,622 INFO L231 Difference]: Finished difference. Result has 177 places, 127 transitions, 1083 flow [2024-06-03 22:27:34,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1083, PETRI_PLACES=177, PETRI_TRANSITIONS=127} [2024-06-03 22:27:34,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-03 22:27:34,623 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 127 transitions, 1083 flow [2024-06-03 22:27:34,623 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) [2024-06-03 22:27:34,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:27:34,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:27:34,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-03 22:27:34,623 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)] === [2024-06-03 22:27:34,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:27:34,623 INFO L85 PathProgramCache]: Analyzing trace with hash 636157818, now seen corresponding path program 7 times [2024-06-03 22:27:34,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:27:34,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362878780] [2024-06-03 22:27:34,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:27:34,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:27:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:27:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:27:39,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:27:39,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362878780] [2024-06-03 22:27:39,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362878780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:27:39,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:27:39,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:27:39,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312360554] [2024-06-03 22:27:39,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:27:39,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:27:39,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:27:39,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:27:39,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:27:39,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:27:39,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 127 transitions, 1083 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) [2024-06-03 22:27:39,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:27:39,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:27:39,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:27:40,366 INFO L124 PetriNetUnfolderBase]: 373/727 cut-off events. [2024-06-03 22:27:40,366 INFO L125 PetriNetUnfolderBase]: For 83763/83763 co-relation queries the response was YES. [2024-06-03 22:27:40,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 727 events. 373/727 cut-off events. For 83763/83763 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3501 event pairs, 90 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 5361. Up to 656 conditions per place. [2024-06-03 22:27:40,371 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 24 changer transitions 0/142 dead transitions. [2024-06-03 22:27:40,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 142 transitions, 1429 flow [2024-06-03 22:27:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:27:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:27:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 22:27:40,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 22:27:40,373 INFO L175 Difference]: Start difference. First operand has 177 places, 127 transitions, 1083 flow. Second operand 10 states and 105 transitions. [2024-06-03 22:27:40,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 142 transitions, 1429 flow [2024-06-03 22:27:40,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 142 transitions, 1377 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-03 22:27:40,510 INFO L231 Difference]: Finished difference. Result has 181 places, 128 transitions, 1115 flow [2024-06-03 22:27:40,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1115, PETRI_PLACES=181, PETRI_TRANSITIONS=128} [2024-06-03 22:27:40,511 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-03 22:27:40,511 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 128 transitions, 1115 flow [2024-06-03 22:27:40,511 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) [2024-06-03 22:27:40,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:27:40,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:27:40,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-03 22:27:40,511 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)] === [2024-06-03 22:27:40,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:27:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1719384552, now seen corresponding path program 8 times [2024-06-03 22:27:40,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:27:40,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512375808] [2024-06-03 22:27:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:27:40,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:27:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:27:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:27:45,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:27:45,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512375808] [2024-06-03 22:27:45,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512375808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:27:45,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:27:45,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:27:45,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431834850] [2024-06-03 22:27:45,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:27:45,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:27:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:27:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:27:45,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 22:27:45,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 22:27:45,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 128 transitions, 1115 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) [2024-06-03 22:27:45,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:27:45,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 22:27:45,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:27:45,942 INFO L124 PetriNetUnfolderBase]: 370/722 cut-off events. [2024-06-03 22:27:45,942 INFO L125 PetriNetUnfolderBase]: For 81546/81546 co-relation queries the response was YES. [2024-06-03 22:27:45,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 722 events. 370/722 cut-off events. For 81546/81546 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3455 event pairs, 88 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 5236. Up to 670 conditions per place. [2024-06-03 22:27:45,948 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 21 changer transitions 0/141 dead transitions. [2024-06-03 22:27:45,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 141 transitions, 1425 flow [2024-06-03 22:27:45,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 22:27:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 22:27:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-03 22:27:45,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 22:27:45,949 INFO L175 Difference]: Start difference. First operand has 181 places, 128 transitions, 1115 flow. Second operand 10 states and 100 transitions. [2024-06-03 22:27:45,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 141 transitions, 1425 flow [2024-06-03 22:27:46,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 141 transitions, 1327 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-03 22:27:46,086 INFO L231 Difference]: Finished difference. Result has 183 places, 128 transitions, 1064 flow [2024-06-03 22:27:46,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1064, PETRI_PLACES=183, PETRI_TRANSITIONS=128} [2024-06-03 22:27:46,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-03 22:27:46,087 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 128 transitions, 1064 flow [2024-06-03 22:27:46,087 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) [2024-06-03 22:27:46,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:27:46,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:27:46,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-03 22:27:46,087 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)] === [2024-06-03 22:27:46,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:27:46,087 INFO L85 PathProgramCache]: Analyzing trace with hash 636149882, now seen corresponding path program 32 times [2024-06-03 22:27:46,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:27:46,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671724753] [2024-06-03 22:27:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:27:46,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:27:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:27:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 22:27:51,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:27:51,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671724753] [2024-06-03 22:27:51,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671724753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:27:51,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:27:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 22:27:51,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775185650] [2024-06-03 22:27:51,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:27:51,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 22:27:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:27:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 22:27:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 Killed by 15