./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_power.opt-thin000_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe006_power.opt-thin000_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_power.opt-thin000_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe006_power.opt-thin000_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:10:21,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:10:21,126 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:10:21,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:10:21,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:10:21,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:10:21,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:10:21,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:10:21,182 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:10:21,185 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:10:21,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:10:21,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:10:21,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:10:21,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:10:21,187 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:10:21,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:10:21,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:10:21,187 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:10:21,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:10:21,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:10:21,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:10:21,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:10:21,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:10:21,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:10:21,189 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:10:21,189 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:10:21,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:10:21,189 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:10:21,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:10:21,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:10:21,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:10:21,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:10:21,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:10:21,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:10:21,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:10:21,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:10:21,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:10:21,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:10:21,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:10:21,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:10:21,192 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:10:21,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:10:21,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:10:21,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:10:21,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:10:21,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:10:21,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:10:21,623 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:10:21,624 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:10:21,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe006_power.opt-thin000_power.opt.yml/witness.yml [2024-06-28 00:10:21,766 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:10:21,766 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:10:21,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_power.opt-thin000_power.opt.i [2024-06-28 00:10:23,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:10:23,531 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:10:23,532 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_power.opt-thin000_power.opt.i [2024-06-28 00:10:23,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609e59adf/2a5ec1a076a64da3b6bc3eeb95bef434/FLAG2e493e74b [2024-06-28 00:10:23,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609e59adf/2a5ec1a076a64da3b6bc3eeb95bef434 [2024-06-28 00:10:23,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:10:23,557 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:10:23,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:10:23,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:10:23,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:10:23,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:10:21" (1/2) ... [2024-06-28 00:10:23,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6720db14 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:10:23, skipping insertion in model container [2024-06-28 00:10:23,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:10:21" (1/2) ... [2024-06-28 00:10:23,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6356327d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:10:23, skipping insertion in model container [2024-06-28 00:10:23,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:10:23" (2/2) ... [2024-06-28 00:10:23,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6720db14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:23, skipping insertion in model container [2024-06-28 00:10:23,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:10:23" (2/2) ... [2024-06-28 00:10:23,566 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:10:23,583 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:10:23,584 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )x) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )x) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$read_delayed) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )x) - (long long )x$mem_tmp >= 0LL) && (2LL - (long long )x) - (long long )x$r_buff0_thd1 >= 0LL) && (2LL - (long long )x) - (long long )x$r_buff1_thd1 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff0 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff0_used >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff1 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff1_used >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff0 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff0_used >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff1_used >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:10:23,585 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )x) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )x) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$read_delayed) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )x) - (long long )x$mem_tmp >= 0LL) && (2LL - (long long )x) - (long long )x$r_buff0_thd1 >= 0LL) && (2LL - (long long )x) - (long long )x$r_buff1_thd1 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff0 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff0_used >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff1 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff1_used >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff0 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff0_used >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff1_used >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:10:23,585 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:10:23,585 INFO L106 edCorrectnessWitness]: ghost_update [L826-L826] multithreaded = 1; [2024-06-28 00:10:23,633 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:10:23,981 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:10:23,993 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:10:24,150 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:10:24,177 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:10:24,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24 WrapperNode [2024-06-28 00:10:24,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:10:24,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:10:24,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:10:24,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:10:24,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,252 INFO L138 Inliner]: procedures = 174, calls = 169, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 521 [2024-06-28 00:10:24,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:10:24,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:10:24,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:10:24,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:10:24,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,268 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,285 INFO L175 MemorySlicer]: Split 136 memory accesses to 2 slices as follows [2, 134]. 99 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 00:10:24,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,299 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:10:24,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:10:24,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:10:24,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:10:24,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (1/1) ... [2024-06-28 00:10:24,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:10:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:10:24,358 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) [2024-06-28 00:10:24,408 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 [2024-06-28 00:10:24,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 00:10:24,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 00:10:24,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 00:10:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 00:10:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:10:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:10:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:10:24,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:10:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:10:24,432 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:10:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:10:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 00:10:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:10:24,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:10:24,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:10:24,435 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:10:24,582 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:10:24,583 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:10:25,220 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:10:25,220 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:10:27,110 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:10:27,110 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:10:27,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:10:27 BoogieIcfgContainer [2024-06-28 00:10:27,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:10:27,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:10:27,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:10:27,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:10:27,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:10:21" (1/4) ... [2024-06-28 00:10:27,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3edcb6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:10:27, skipping insertion in model container [2024-06-28 00:10:27,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:10:23" (2/4) ... [2024-06-28 00:10:27,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3edcb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:10:27, skipping insertion in model container [2024-06-28 00:10:27,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:10:24" (3/4) ... [2024-06-28 00:10:27,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3edcb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:10:27, skipping insertion in model container [2024-06-28 00:10:27,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:10:27" (4/4) ... [2024-06-28 00:10:27,122 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_power.opt-thin000_power.opt.i [2024-06-28 00:10:27,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:10:27,139 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:10:27,139 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:10:27,199 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:10:27,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 00:10:27,340 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-28 00:10:27,340 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:10:27,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:10:27,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 00:10:27,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-28 00:10:27,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:10:27,393 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;@677ea3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:10:27,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:10:27,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:10:27,399 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 00:10:27,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:10:27,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:27,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:10:27,400 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)] === [2024-06-28 00:10:27,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1303656324, now seen corresponding path program 1 times [2024-06-28 00:10:27,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:27,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810383883] [2024-06-28 00:10:27,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:27,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:32,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810383883] [2024-06-28 00:10:32,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810383883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:32,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:32,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:10:32,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356112377] [2024-06-28 00:10:32,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:32,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:10:32,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:32,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:10:32,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:10:32,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:10:32,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:32,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:32,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:10:32,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:33,039 INFO L124 PetriNetUnfolderBase]: 135/253 cut-off events. [2024-06-28 00:10:33,040 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 00:10:33,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 253 events. 135/253 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 866 event pairs, 75 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 507. Up to 243 conditions per place. [2024-06-28 00:10:33,044 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 00:10:33,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 117 flow [2024-06-28 00:10:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:10:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:10:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-06-28 00:10:33,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 00:10:33,054 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 45 transitions. [2024-06-28 00:10:33,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 117 flow [2024-06-28 00:10:33,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:10:33,058 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-28 00:10:33,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-28 00:10:33,061 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-28 00:10:33,062 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-28 00:10:33,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:33,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:33,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:33,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:10:33,063 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)] === [2024-06-28 00:10:33,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2132976765, now seen corresponding path program 1 times [2024-06-28 00:10:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:33,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909858234] [2024-06-28 00:10:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:33,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:36,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:36,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909858234] [2024-06-28 00:10:36,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909858234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:36,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:36,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:10:36,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964466659] [2024-06-28 00:10:36,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:36,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:10:36,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:36,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:10:36,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:10:36,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 00:10:36,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2024-06-28 00:10:36,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:36,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 00:10:36,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:37,190 INFO L124 PetriNetUnfolderBase]: 161/298 cut-off events. [2024-06-28 00:10:37,191 INFO L125 PetriNetUnfolderBase]: For 57/60 co-relation queries the response was YES. [2024-06-28 00:10:37,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 298 events. 161/298 cut-off events. For 57/60 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1024 event pairs, 66 based on Foata normal form. 4/300 useless extension candidates. Maximal degree in co-relation 681. Up to 266 conditions per place. [2024-06-28 00:10:37,193 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 29 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-28 00:10:37,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 169 flow [2024-06-28 00:10:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:10:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:10:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-06-28 00:10:37,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 00:10:37,195 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 56 transitions. [2024-06-28 00:10:37,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 169 flow [2024-06-28 00:10:37,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:10:37,196 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-28 00:10:37,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-28 00:10:37,197 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-28 00:10:37,197 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-28 00:10:37,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2024-06-28 00:10:37,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:37,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:37,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:10:37,198 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)] === [2024-06-28 00:10:37,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:37,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2013258788, now seen corresponding path program 1 times [2024-06-28 00:10:37,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:37,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451592458] [2024-06-28 00:10:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:37,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:41,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:41,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451592458] [2024-06-28 00:10:41,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451592458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:41,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:41,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:10:41,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973922323] [2024-06-28 00:10:41,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:41,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:10:41,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:41,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:10:41,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:10:41,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 00:10:41,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:41,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:41,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 00:10:41,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:41,753 INFO L124 PetriNetUnfolderBase]: 158/293 cut-off events. [2024-06-28 00:10:41,754 INFO L125 PetriNetUnfolderBase]: For 173/179 co-relation queries the response was YES. [2024-06-28 00:10:41,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 293 events. 158/293 cut-off events. For 173/179 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 988 event pairs, 48 based on Foata normal form. 6/297 useless extension candidates. Maximal degree in co-relation 741. Up to 250 conditions per place. [2024-06-28 00:10:41,756 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 34 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-06-28 00:10:41,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 221 flow [2024-06-28 00:10:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:10:41,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:10:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-06-28 00:10:41,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-28 00:10:41,758 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 68 transitions. [2024-06-28 00:10:41,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 221 flow [2024-06-28 00:10:41,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 212 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:10:41,760 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-28 00:10:41,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-28 00:10:41,760 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-28 00:10:41,761 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-28 00:10:41,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:41,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:41,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:41,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:10:41,761 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)] === [2024-06-28 00:10:41,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2013485158, now seen corresponding path program 1 times [2024-06-28 00:10:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484769693] [2024-06-28 00:10:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:41,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:45,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:45,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484769693] [2024-06-28 00:10:45,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484769693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:45,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:45,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316834576] [2024-06-28 00:10:45,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:45,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:45,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:45,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:45,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 00:10:45,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:45,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:45,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 00:10:45,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:46,373 INFO L124 PetriNetUnfolderBase]: 154/285 cut-off events. [2024-06-28 00:10:46,374 INFO L125 PetriNetUnfolderBase]: For 275/281 co-relation queries the response was YES. [2024-06-28 00:10:46,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 285 events. 154/285 cut-off events. For 275/281 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 941 event pairs, 29 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 782. Up to 220 conditions per place. [2024-06-28 00:10:46,377 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 34 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-28 00:10:46,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 235 flow [2024-06-28 00:10:46,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:10:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:10:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-28 00:10:46,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 00:10:46,381 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 74 transitions. [2024-06-28 00:10:46,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 235 flow [2024-06-28 00:10:46,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 220 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:10:46,385 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-28 00:10:46,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-28 00:10:46,387 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-28 00:10:46,387 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-28 00:10:46,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:46,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:46,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:46,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:10:46,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:46,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1001686226, now seen corresponding path program 1 times [2024-06-28 00:10:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:46,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740868304] [2024-06-28 00:10:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:46,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:52,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:52,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740868304] [2024-06-28 00:10:52,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740868304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:52,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:52,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:10:52,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56402525] [2024-06-28 00:10:52,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:52,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:10:52,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:52,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:10:52,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:10:53,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 00:10:53,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:53,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:53,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 00:10:53,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:53,566 INFO L124 PetriNetUnfolderBase]: 123/232 cut-off events. [2024-06-28 00:10:53,566 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2024-06-28 00:10:53,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 232 events. 123/232 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 771 event pairs, 34 based on Foata normal form. 1/231 useless extension candidates. Maximal degree in co-relation 685. Up to 219 conditions per place. [2024-06-28 00:10:53,568 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2024-06-28 00:10:53,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 208 flow [2024-06-28 00:10:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:10:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:10:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-06-28 00:10:53,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 00:10:53,570 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 5 states and 55 transitions. [2024-06-28 00:10:53,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 208 flow [2024-06-28 00:10:53,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 186 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:10:53,571 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 140 flow [2024-06-28 00:10:53,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2024-06-28 00:10:53,572 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2024-06-28 00:10:53,572 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 140 flow [2024-06-28 00:10:53,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:53,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:53,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:53,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:10:53,573 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)] === [2024-06-28 00:10:53,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 987504152, now seen corresponding path program 1 times [2024-06-28 00:10:53,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:53,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972906735] [2024-06-28 00:10:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:58,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:58,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972906735] [2024-06-28 00:10:58,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972906735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:58,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:58,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:10:58,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334708055] [2024-06-28 00:10:58,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:58,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:10:58,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:58,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:10:58,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:10:58,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:10:58,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:58,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:58,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:10:58,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:59,167 INFO L124 PetriNetUnfolderBase]: 146/276 cut-off events. [2024-06-28 00:10:59,167 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-06-28 00:10:59,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 276 events. 146/276 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 919 event pairs, 72 based on Foata normal form. 2/277 useless extension candidates. Maximal degree in co-relation 830. Up to 254 conditions per place. [2024-06-28 00:10:59,169 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 34 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-28 00:10:59,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 271 flow [2024-06-28 00:10:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:10:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:10:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-06-28 00:10:59,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3277777777777778 [2024-06-28 00:10:59,171 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 140 flow. Second operand 6 states and 59 transitions. [2024-06-28 00:10:59,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 271 flow [2024-06-28 00:10:59,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:10:59,173 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 202 flow [2024-06-28 00:10:59,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-06-28 00:10:59,174 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-28 00:10:59,174 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 202 flow [2024-06-28 00:10:59,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:59,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:59,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:59,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:10:59,175 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)] === [2024-06-28 00:10:59,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:59,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1639130845, now seen corresponding path program 1 times [2024-06-28 00:10:59,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:59,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876139248] [2024-06-28 00:10:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:59,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:06,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:06,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876139248] [2024-06-28 00:11:06,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876139248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:06,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:06,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:06,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200338442] [2024-06-28 00:11:06,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:06,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:06,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:06,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:11:06,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:06,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:06,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:11:06,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:06,640 INFO L124 PetriNetUnfolderBase]: 159/299 cut-off events. [2024-06-28 00:11:06,641 INFO L125 PetriNetUnfolderBase]: For 643/645 co-relation queries the response was YES. [2024-06-28 00:11:06,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 299 events. 159/299 cut-off events. For 643/645 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1036 event pairs, 59 based on Foata normal form. 3/301 useless extension candidates. Maximal degree in co-relation 981. Up to 245 conditions per place. [2024-06-28 00:11:06,643 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 42 selfloop transitions, 19 changer transitions 0/63 dead transitions. [2024-06-28 00:11:06,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 408 flow [2024-06-28 00:11:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 00:11:06,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 00:11:06,645 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 202 flow. Second operand 8 states and 85 transitions. [2024-06-28 00:11:06,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 408 flow [2024-06-28 00:11:06,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 408 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:11:06,649 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 289 flow [2024-06-28 00:11:06,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=289, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-28 00:11:06,649 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-28 00:11:06,650 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 289 flow [2024-06-28 00:11:06,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:06,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:06,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:06,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:11:06,651 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)] === [2024-06-28 00:11:06,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:06,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1252074893, now seen corresponding path program 2 times [2024-06-28 00:11:06,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:06,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777482386] [2024-06-28 00:11:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:06,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:12,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:12,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777482386] [2024-06-28 00:11:12,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777482386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:12,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:12,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:12,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959404871] [2024-06-28 00:11:12,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:12,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:11:12,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 289 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:12,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:12,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:11:12,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:13,299 INFO L124 PetriNetUnfolderBase]: 157/296 cut-off events. [2024-06-28 00:11:13,299 INFO L125 PetriNetUnfolderBase]: For 914/916 co-relation queries the response was YES. [2024-06-28 00:11:13,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 296 events. 157/296 cut-off events. For 914/916 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1024 event pairs, 59 based on Foata normal form. 3/298 useless extension candidates. Maximal degree in co-relation 1085. Up to 239 conditions per place. [2024-06-28 00:11:13,301 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 20 changer transitions 0/62 dead transitions. [2024-06-28 00:11:13,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 469 flow [2024-06-28 00:11:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:11:13,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:11:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-28 00:11:13,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-06-28 00:11:13,305 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 289 flow. Second operand 7 states and 76 transitions. [2024-06-28 00:11:13,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 469 flow [2024-06-28 00:11:13,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 451 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:11:13,308 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 335 flow [2024-06-28 00:11:13,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2024-06-28 00:11:13,309 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-28 00:11:13,309 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 335 flow [2024-06-28 00:11:13,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:13,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:13,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:13,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:11:13,309 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)] === [2024-06-28 00:11:13,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:13,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1220559053, now seen corresponding path program 3 times [2024-06-28 00:11:13,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:13,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364214775] [2024-06-28 00:11:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:13,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:17,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:17,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364214775] [2024-06-28 00:11:17,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364214775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:17,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:17,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:11:17,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242204752] [2024-06-28 00:11:17,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:17,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:11:17,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:17,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:11:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:11:17,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:11:17,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2024-06-28 00:11:17,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:17,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:11:17,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:18,318 INFO L124 PetriNetUnfolderBase]: 155/293 cut-off events. [2024-06-28 00:11:18,318 INFO L125 PetriNetUnfolderBase]: For 1153/1156 co-relation queries the response was YES. [2024-06-28 00:11:18,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 293 events. 155/293 cut-off events. For 1153/1156 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1001 event pairs, 63 based on Foata normal form. 3/294 useless extension candidates. Maximal degree in co-relation 1155. Up to 257 conditions per place. [2024-06-28 00:11:18,321 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 39 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2024-06-28 00:11:18,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 453 flow [2024-06-28 00:11:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:11:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:11:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2024-06-28 00:11:18,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30952380952380953 [2024-06-28 00:11:18,324 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 335 flow. Second operand 7 states and 65 transitions. [2024-06-28 00:11:18,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 453 flow [2024-06-28 00:11:18,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 408 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 00:11:18,327 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 321 flow [2024-06-28 00:11:18,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=321, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-06-28 00:11:18,329 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-28 00:11:18,329 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 321 flow [2024-06-28 00:11:18,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2024-06-28 00:11:18,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:18,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:18,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:11:18,329 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)] === [2024-06-28 00:11:18,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:18,330 INFO L85 PathProgramCache]: Analyzing trace with hash 899467575, now seen corresponding path program 1 times [2024-06-28 00:11:18,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:18,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379445600] [2024-06-28 00:11:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:23,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:23,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379445600] [2024-06-28 00:11:23,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379445600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:23,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:23,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:11:23,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201859617] [2024-06-28 00:11:23,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:23,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:11:23,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:11:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:11:23,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:11:23,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2024-06-28 00:11:23,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:23,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:11:23,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:23,921 INFO L124 PetriNetUnfolderBase]: 161/303 cut-off events. [2024-06-28 00:11:23,921 INFO L125 PetriNetUnfolderBase]: For 1156/1159 co-relation queries the response was YES. [2024-06-28 00:11:23,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 303 events. 161/303 cut-off events. For 1156/1159 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1035 event pairs, 61 based on Foata normal form. 4/305 useless extension candidates. Maximal degree in co-relation 1159. Up to 258 conditions per place. [2024-06-28 00:11:23,923 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 40 selfloop transitions, 15 changer transitions 0/57 dead transitions. [2024-06-28 00:11:23,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 457 flow [2024-06-28 00:11:23,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:11:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:11:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2024-06-28 00:11:23,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.319047619047619 [2024-06-28 00:11:23,925 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 321 flow. Second operand 7 states and 67 transitions. [2024-06-28 00:11:23,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 457 flow [2024-06-28 00:11:23,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 428 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:11:23,928 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 344 flow [2024-06-28 00:11:23,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2024-06-28 00:11:23,929 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2024-06-28 00:11:23,929 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 344 flow [2024-06-28 00:11:23,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2024-06-28 00:11:23,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:23,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:23,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:11:23,929 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)] === [2024-06-28 00:11:23,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:23,930 INFO L85 PathProgramCache]: Analyzing trace with hash -196449913, now seen corresponding path program 2 times [2024-06-28 00:11:23,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:23,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379724931] [2024-06-28 00:11:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:30,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:30,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379724931] [2024-06-28 00:11:30,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379724931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:30,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:30,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:11:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592667103] [2024-06-28 00:11:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:11:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:30,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:11:30,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:11:30,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:11:30,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2024-06-28 00:11:30,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:30,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:11:30,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:30,786 INFO L124 PetriNetUnfolderBase]: 157/297 cut-off events. [2024-06-28 00:11:30,786 INFO L125 PetriNetUnfolderBase]: For 1267/1270 co-relation queries the response was YES. [2024-06-28 00:11:30,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 297 events. 157/297 cut-off events. For 1267/1270 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1013 event pairs, 61 based on Foata normal form. 4/299 useless extension candidates. Maximal degree in co-relation 1191. Up to 244 conditions per place. [2024-06-28 00:11:30,788 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 42 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2024-06-28 00:11:30,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 496 flow [2024-06-28 00:11:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:11:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:11:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-28 00:11:30,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380952380952381 [2024-06-28 00:11:30,795 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 344 flow. Second operand 7 states and 71 transitions. [2024-06-28 00:11:30,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 496 flow [2024-06-28 00:11:30,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 468 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:11:30,798 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 375 flow [2024-06-28 00:11:30,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-28 00:11:30,798 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-28 00:11:30,798 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 375 flow [2024-06-28 00:11:30,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2024-06-28 00:11:30,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:30,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:30,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:11:30,799 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)] === [2024-06-28 00:11:30,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash -196210345, now seen corresponding path program 1 times [2024-06-28 00:11:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:30,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197875362] [2024-06-28 00:11:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:30,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:36,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:36,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197875362] [2024-06-28 00:11:36,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197875362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:36,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:36,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:11:36,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262280139] [2024-06-28 00:11:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:36,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:11:36,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:36,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:11:36,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:11:36,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:11:36,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 375 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:36,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:36,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:11:36,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:37,713 INFO L124 PetriNetUnfolderBase]: 154/292 cut-off events. [2024-06-28 00:11:37,713 INFO L125 PetriNetUnfolderBase]: For 1476/1476 co-relation queries the response was YES. [2024-06-28 00:11:37,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1243 conditions, 292 events. 154/292 cut-off events. For 1476/1476 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 990 event pairs, 69 based on Foata normal form. 2/293 useless extension candidates. Maximal degree in co-relation 1208. Up to 263 conditions per place. [2024-06-28 00:11:37,715 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 48 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2024-06-28 00:11:37,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 513 flow [2024-06-28 00:11:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 69 transitions. [2024-06-28 00:11:37,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2875 [2024-06-28 00:11:37,741 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 375 flow. Second operand 8 states and 69 transitions. [2024-06-28 00:11:37,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 61 transitions, 513 flow [2024-06-28 00:11:37,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 61 transitions, 480 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:11:37,745 INFO L231 Difference]: Finished difference. Result has 68 places, 52 transitions, 368 flow [2024-06-28 00:11:37,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=368, PETRI_PLACES=68, PETRI_TRANSITIONS=52} [2024-06-28 00:11:37,746 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-28 00:11:37,746 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 52 transitions, 368 flow [2024-06-28 00:11:37,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:37,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:37,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:37,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:11:37,746 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)] === [2024-06-28 00:11:37,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:37,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1955713742, now seen corresponding path program 1 times [2024-06-28 00:11:37,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:37,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929625373] [2024-06-28 00:11:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:37,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:42,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929625373] [2024-06-28 00:11:42,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929625373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:42,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:42,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122193748] [2024-06-28 00:11:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:42,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:42,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:42,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:42,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:43,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:11:43,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 52 transitions, 368 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:11:43,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:43,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:11:43,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:43,628 INFO L124 PetriNetUnfolderBase]: 167/314 cut-off events. [2024-06-28 00:11:43,629 INFO L125 PetriNetUnfolderBase]: For 1675/1678 co-relation queries the response was YES. [2024-06-28 00:11:43,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 314 events. 167/314 cut-off events. For 1675/1678 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1099 event pairs, 52 based on Foata normal form. 3/315 useless extension candidates. Maximal degree in co-relation 1305. Up to 237 conditions per place. [2024-06-28 00:11:43,632 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 54 selfloop transitions, 20 changer transitions 0/76 dead transitions. [2024-06-28 00:11:43,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 620 flow [2024-06-28 00:11:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:11:43,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:11:43,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 00:11:43,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-28 00:11:43,634 INFO L175 Difference]: Start difference. First operand has 68 places, 52 transitions, 368 flow. Second operand 7 states and 82 transitions. [2024-06-28 00:11:43,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 620 flow [2024-06-28 00:11:43,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 590 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:11:43,639 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 441 flow [2024-06-28 00:11:43,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-28 00:11:43,640 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-28 00:11:43,640 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 441 flow [2024-06-28 00:11:43,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:11:43,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:43,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:43,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:11:43,641 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)] === [2024-06-28 00:11:43,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:43,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1330317724, now seen corresponding path program 2 times [2024-06-28 00:11:43,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:43,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626262928] [2024-06-28 00:11:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:43,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:50,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626262928] [2024-06-28 00:11:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626262928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:50,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:50,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:50,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222954713] [2024-06-28 00:11:50,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:50,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:50,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:50,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:50,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:11:50,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 441 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:50,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:50,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:11:50,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:51,662 INFO L124 PetriNetUnfolderBase]: 170/319 cut-off events. [2024-06-28 00:11:51,662 INFO L125 PetriNetUnfolderBase]: For 2049/2051 co-relation queries the response was YES. [2024-06-28 00:11:51,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 319 events. 170/319 cut-off events. For 2049/2051 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1120 event pairs, 51 based on Foata normal form. 3/321 useless extension candidates. Maximal degree in co-relation 1418. Up to 241 conditions per place. [2024-06-28 00:11:51,665 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 26 changer transitions 0/79 dead transitions. [2024-06-28 00:11:51,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 681 flow [2024-06-28 00:11:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:51,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 00:11:51,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 00:11:51,668 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 441 flow. Second operand 8 states and 88 transitions. [2024-06-28 00:11:51,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 681 flow [2024-06-28 00:11:51,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 650 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 00:11:51,673 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 488 flow [2024-06-28 00:11:51,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=488, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2024-06-28 00:11:51,674 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-28 00:11:51,674 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 488 flow [2024-06-28 00:11:51,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:51,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:51,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:51,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:11:51,675 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)] === [2024-06-28 00:11:51,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash 983619327, now seen corresponding path program 1 times [2024-06-28 00:11:51,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:51,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934026512] [2024-06-28 00:11:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:51,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:00,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:00,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934026512] [2024-06-28 00:12:00,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934026512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:00,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:00,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738567401] [2024-06-28 00:12:00,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:00,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:00,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:00,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:00,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:12:00,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 488 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:00,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:00,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:12:00,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:01,166 INFO L124 PetriNetUnfolderBase]: 186/345 cut-off events. [2024-06-28 00:12:01,166 INFO L125 PetriNetUnfolderBase]: For 2653/2655 co-relation queries the response was YES. [2024-06-28 00:12:01,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 345 events. 186/345 cut-off events. For 2653/2655 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1247 event pairs, 53 based on Foata normal form. 4/348 useless extension candidates. Maximal degree in co-relation 1614. Up to 272 conditions per place. [2024-06-28 00:12:01,169 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 62 selfloop transitions, 24 changer transitions 0/88 dead transitions. [2024-06-28 00:12:01,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 774 flow [2024-06-28 00:12:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:12:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:12:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 00:12:01,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-28 00:12:01,170 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 488 flow. Second operand 10 states and 102 transitions. [2024-06-28 00:12:01,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 774 flow [2024-06-28 00:12:01,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 724 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:12:01,196 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 542 flow [2024-06-28 00:12:01,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=542, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-06-28 00:12:01,197 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-28 00:12:01,197 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 542 flow [2024-06-28 00:12:01,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:01,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:01,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:01,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:12:01,198 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)] === [2024-06-28 00:12:01,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:01,199 INFO L85 PathProgramCache]: Analyzing trace with hash 695157550, now seen corresponding path program 3 times [2024-06-28 00:12:01,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:01,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321061594] [2024-06-28 00:12:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:01,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:09,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:09,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321061594] [2024-06-28 00:12:09,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321061594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:09,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:09,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:09,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334306537] [2024-06-28 00:12:09,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:09,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:09,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:09,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:09,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:09,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:12:09,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 542 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:09,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:09,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:12:09,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:09,566 INFO L124 PetriNetUnfolderBase]: 184/342 cut-off events. [2024-06-28 00:12:09,567 INFO L125 PetriNetUnfolderBase]: For 2578/2581 co-relation queries the response was YES. [2024-06-28 00:12:09,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 342 events. 184/342 cut-off events. For 2578/2581 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1229 event pairs, 54 based on Foata normal form. 3/343 useless extension candidates. Maximal degree in co-relation 1646. Up to 281 conditions per place. [2024-06-28 00:12:09,569 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 58 selfloop transitions, 19 changer transitions 0/79 dead transitions. [2024-06-28 00:12:09,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 736 flow [2024-06-28 00:12:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:12:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:12:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-28 00:12:09,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380952380952381 [2024-06-28 00:12:09,572 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 542 flow. Second operand 7 states and 71 transitions. [2024-06-28 00:12:09,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 736 flow [2024-06-28 00:12:09,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 704 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:12:09,580 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 574 flow [2024-06-28 00:12:09,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=574, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-06-28 00:12:09,581 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-28 00:12:09,581 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 574 flow [2024-06-28 00:12:09,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:09,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:09,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:09,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:12:09,583 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)] === [2024-06-28 00:12:09,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2109968431, now seen corresponding path program 2 times [2024-06-28 00:12:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:09,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837209208] [2024-06-28 00:12:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:16,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:16,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837209208] [2024-06-28 00:12:16,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837209208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:16,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:16,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:16,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482781897] [2024-06-28 00:12:16,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:16,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:16,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:12:16,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 574 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:16,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:16,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:12:16,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:17,306 INFO L124 PetriNetUnfolderBase]: 190/352 cut-off events. [2024-06-28 00:12:17,307 INFO L125 PetriNetUnfolderBase]: For 3023/3025 co-relation queries the response was YES. [2024-06-28 00:12:17,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 352 events. 190/352 cut-off events. For 3023/3025 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1282 event pairs, 51 based on Foata normal form. 4/355 useless extension candidates. Maximal degree in co-relation 1750. Up to 275 conditions per place. [2024-06-28 00:12:17,309 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 61 selfloop transitions, 27 changer transitions 0/90 dead transitions. [2024-06-28 00:12:17,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 854 flow [2024-06-28 00:12:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:12:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:12:17,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 00:12:17,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-28 00:12:17,311 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 574 flow. Second operand 9 states and 92 transitions. [2024-06-28 00:12:17,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 854 flow [2024-06-28 00:12:17,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 90 transitions, 808 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:12:17,316 INFO L231 Difference]: Finished difference. Result has 88 places, 73 transitions, 643 flow [2024-06-28 00:12:17,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=643, PETRI_PLACES=88, PETRI_TRANSITIONS=73} [2024-06-28 00:12:17,317 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-28 00:12:17,317 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 73 transitions, 643 flow [2024-06-28 00:12:17,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:17,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:17,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:17,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:12:17,318 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)] === [2024-06-28 00:12:17,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:17,318 INFO L85 PathProgramCache]: Analyzing trace with hash 817382819, now seen corresponding path program 3 times [2024-06-28 00:12:17,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:17,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751297545] [2024-06-28 00:12:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:17,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:21,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751297545] [2024-06-28 00:12:21,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751297545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:21,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216961516] [2024-06-28 00:12:21,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:21,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:21,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:12:21,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 73 transitions, 643 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:21,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:21,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:12:21,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:22,349 INFO L124 PetriNetUnfolderBase]: 199/368 cut-off events. [2024-06-28 00:12:22,349 INFO L125 PetriNetUnfolderBase]: For 3458/3461 co-relation queries the response was YES. [2024-06-28 00:12:22,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 368 events. 199/368 cut-off events. For 3458/3461 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1343 event pairs, 58 based on Foata normal form. 3/369 useless extension candidates. Maximal degree in co-relation 1955. Up to 327 conditions per place. [2024-06-28 00:12:22,352 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 68 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-06-28 00:12:22,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 908 flow [2024-06-28 00:12:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:22,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 73 transitions. [2024-06-28 00:12:22,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30416666666666664 [2024-06-28 00:12:22,354 INFO L175 Difference]: Start difference. First operand has 88 places, 73 transitions, 643 flow. Second operand 8 states and 73 transitions. [2024-06-28 00:12:22,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 908 flow [2024-06-28 00:12:22,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 842 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:12:22,363 INFO L231 Difference]: Finished difference. Result has 91 places, 81 transitions, 723 flow [2024-06-28 00:12:22,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=723, PETRI_PLACES=91, PETRI_TRANSITIONS=81} [2024-06-28 00:12:22,364 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-28 00:12:22,364 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 81 transitions, 723 flow [2024-06-28 00:12:22,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:22,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:22,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:22,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:12:22,364 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)] === [2024-06-28 00:12:22,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2113687346, now seen corresponding path program 4 times [2024-06-28 00:12:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:22,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440929403] [2024-06-28 00:12:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:27,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:27,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440929403] [2024-06-28 00:12:27,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440929403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:27,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:27,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:27,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311872730] [2024-06-28 00:12:27,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:27,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:27,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:27,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:27,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:12:27,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 723 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:27,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:27,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:12:27,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:27,664 INFO L124 PetriNetUnfolderBase]: 197/365 cut-off events. [2024-06-28 00:12:27,665 INFO L125 PetriNetUnfolderBase]: For 3357/3360 co-relation queries the response was YES. [2024-06-28 00:12:27,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 365 events. 197/365 cut-off events. For 3357/3360 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1330 event pairs, 59 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 1924. Up to 322 conditions per place. [2024-06-28 00:12:27,667 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 71 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-06-28 00:12:27,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 911 flow [2024-06-28 00:12:27,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:12:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:12:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-06-28 00:12:27,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3142857142857143 [2024-06-28 00:12:27,670 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 723 flow. Second operand 7 states and 66 transitions. [2024-06-28 00:12:27,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 911 flow [2024-06-28 00:12:27,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 878 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:12:27,678 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 725 flow [2024-06-28 00:12:27,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=725, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-06-28 00:12:27,679 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2024-06-28 00:12:27,679 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 725 flow [2024-06-28 00:12:27,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:27,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:27,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:27,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:12:27,680 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)] === [2024-06-28 00:12:27,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:27,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2113687501, now seen corresponding path program 4 times [2024-06-28 00:12:27,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:27,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765600244] [2024-06-28 00:12:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:27,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:31,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:31,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765600244] [2024-06-28 00:12:31,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765600244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:31,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:31,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:31,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341854070] [2024-06-28 00:12:31,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:31,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:31,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:31,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:31,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:12:31,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 725 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:31,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:31,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:12:31,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:32,455 INFO L124 PetriNetUnfolderBase]: 211/388 cut-off events. [2024-06-28 00:12:32,456 INFO L125 PetriNetUnfolderBase]: For 4003/4006 co-relation queries the response was YES. [2024-06-28 00:12:32,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 388 events. 211/388 cut-off events. For 4003/4006 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1417 event pairs, 59 based on Foata normal form. 4/390 useless extension candidates. Maximal degree in co-relation 2093. Up to 334 conditions per place. [2024-06-28 00:12:32,459 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 73 selfloop transitions, 22 changer transitions 0/97 dead transitions. [2024-06-28 00:12:32,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 1056 flow [2024-06-28 00:12:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:12:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:12:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-28 00:12:32,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-28 00:12:32,461 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 725 flow. Second operand 7 states and 73 transitions. [2024-06-28 00:12:32,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 1056 flow [2024-06-28 00:12:32,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 1014 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:12:32,469 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 835 flow [2024-06-28 00:12:32,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=835, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-06-28 00:12:32,469 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 67 predicate places. [2024-06-28 00:12:32,469 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 835 flow [2024-06-28 00:12:32,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:32,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:32,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:32,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:12:32,471 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)] === [2024-06-28 00:12:32,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:32,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1795179785, now seen corresponding path program 5 times [2024-06-28 00:12:32,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:32,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263616396] [2024-06-28 00:12:32,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:32,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263616396] [2024-06-28 00:12:37,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263616396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:37,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:37,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:37,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333619325] [2024-06-28 00:12:37,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:37,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:37,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:12:37,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 835 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:37,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:37,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:12:37,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:38,227 INFO L124 PetriNetUnfolderBase]: 224/411 cut-off events. [2024-06-28 00:12:38,227 INFO L125 PetriNetUnfolderBase]: For 4872/4875 co-relation queries the response was YES. [2024-06-28 00:12:38,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 411 events. 224/411 cut-off events. For 4872/4875 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1548 event pairs, 59 based on Foata normal form. 4/413 useless extension candidates. Maximal degree in co-relation 2295. Up to 345 conditions per place. [2024-06-28 00:12:38,230 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 77 selfloop transitions, 27 changer transitions 0/106 dead transitions. [2024-06-28 00:12:38,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 1199 flow [2024-06-28 00:12:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-28 00:12:38,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29393939393939394 [2024-06-28 00:12:38,232 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 835 flow. Second operand 11 states and 97 transitions. [2024-06-28 00:12:38,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 1199 flow [2024-06-28 00:12:38,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 106 transitions, 1162 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 00:12:38,240 INFO L231 Difference]: Finished difference. Result has 106 places, 93 transitions, 936 flow [2024-06-28 00:12:38,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=936, PETRI_PLACES=106, PETRI_TRANSITIONS=93} [2024-06-28 00:12:38,241 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-28 00:12:38,241 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 93 transitions, 936 flow [2024-06-28 00:12:38,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:38,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:38,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:38,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:12:38,241 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)] === [2024-06-28 00:12:38,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1787828135, now seen corresponding path program 6 times [2024-06-28 00:12:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:38,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248168779] [2024-06-28 00:12:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:42,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:42,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248168779] [2024-06-28 00:12:42,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248168779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:42,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:42,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:42,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530142307] [2024-06-28 00:12:42,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:42,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:42,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:42,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:42,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:42,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:12:42,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 93 transitions, 936 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:42,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:42,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:12:42,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:43,426 INFO L124 PetriNetUnfolderBase]: 225/413 cut-off events. [2024-06-28 00:12:43,427 INFO L125 PetriNetUnfolderBase]: For 5290/5293 co-relation queries the response was YES. [2024-06-28 00:12:43,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 413 events. 225/413 cut-off events. For 5290/5293 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1545 event pairs, 60 based on Foata normal form. 4/415 useless extension candidates. Maximal degree in co-relation 2399. Up to 360 conditions per place. [2024-06-28 00:12:43,430 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 81 selfloop transitions, 23 changer transitions 0/106 dead transitions. [2024-06-28 00:12:43,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 106 transitions, 1212 flow [2024-06-28 00:12:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:12:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:12:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-06-28 00:12:43,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-28 00:12:43,431 INFO L175 Difference]: Start difference. First operand has 106 places, 93 transitions, 936 flow. Second operand 9 states and 81 transitions. [2024-06-28 00:12:43,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 106 transitions, 1212 flow [2024-06-28 00:12:43,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 1124 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 00:12:43,440 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 952 flow [2024-06-28 00:12:43,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2024-06-28 00:12:43,442 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2024-06-28 00:12:43,442 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 952 flow [2024-06-28 00:12:43,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:43,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:43,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:43,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:12:43,442 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)] === [2024-06-28 00:12:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1515437095, now seen corresponding path program 7 times [2024-06-28 00:12:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:43,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963756035] [2024-06-28 00:12:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:43,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:48,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:48,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963756035] [2024-06-28 00:12:48,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963756035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:48,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:48,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:48,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713446466] [2024-06-28 00:12:48,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:48,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:48,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:48,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:48,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:12:48,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 952 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:48,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:48,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:12:48,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:49,587 INFO L124 PetriNetUnfolderBase]: 221/407 cut-off events. [2024-06-28 00:12:49,587 INFO L125 PetriNetUnfolderBase]: For 5399/5402 co-relation queries the response was YES. [2024-06-28 00:12:49,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 407 events. 221/407 cut-off events. For 5399/5402 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1516 event pairs, 59 based on Foata normal form. 4/409 useless extension candidates. Maximal degree in co-relation 2337. Up to 354 conditions per place. [2024-06-28 00:12:49,590 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 81 selfloop transitions, 24 changer transitions 0/107 dead transitions. [2024-06-28 00:12:49,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 107 transitions, 1190 flow [2024-06-28 00:12:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:12:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:12:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 89 transitions. [2024-06-28 00:12:49,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2966666666666667 [2024-06-28 00:12:49,592 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 952 flow. Second operand 10 states and 89 transitions. [2024-06-28 00:12:49,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 107 transitions, 1190 flow [2024-06-28 00:12:49,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 1106 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 00:12:49,602 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 924 flow [2024-06-28 00:12:49,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=924, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-28 00:12:49,602 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-28 00:12:49,602 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 924 flow [2024-06-28 00:12:49,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2024-06-28 00:12:49,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:49,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:49,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:12:49,603 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)] === [2024-06-28 00:12:49,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash -440303478, now seen corresponding path program 1 times [2024-06-28 00:12:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:49,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944654883] [2024-06-28 00:12:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:55,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:55,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944654883] [2024-06-28 00:12:55,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944654883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:55,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:55,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:55,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429684229] [2024-06-28 00:12:55,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:55,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:55,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:55,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:55,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:55,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:12:55,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 924 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:55,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:55,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:12:55,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:56,543 INFO L124 PetriNetUnfolderBase]: 238/441 cut-off events. [2024-06-28 00:12:56,543 INFO L125 PetriNetUnfolderBase]: For 6327/6330 co-relation queries the response was YES. [2024-06-28 00:12:56,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 441 events. 238/441 cut-off events. For 6327/6330 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1758 event pairs, 28 based on Foata normal form. 4/443 useless extension candidates. Maximal degree in co-relation 2480. Up to 288 conditions per place. [2024-06-28 00:12:56,547 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 85 selfloop transitions, 34 changer transitions 0/121 dead transitions. [2024-06-28 00:12:56,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 121 transitions, 1280 flow [2024-06-28 00:12:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:12:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:12:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 00:12:56,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-28 00:12:56,549 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 924 flow. Second operand 9 states and 93 transitions. [2024-06-28 00:12:56,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 121 transitions, 1280 flow [2024-06-28 00:12:56,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 121 transitions, 1176 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:12:56,562 INFO L231 Difference]: Finished difference. Result has 112 places, 100 transitions, 922 flow [2024-06-28 00:12:56,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2024-06-28 00:12:56,563 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-28 00:12:56,563 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 922 flow [2024-06-28 00:12:56,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:56,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:56,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:56,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:12:56,564 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)] === [2024-06-28 00:12:56,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:56,564 INFO L85 PathProgramCache]: Analyzing trace with hash 785770812, now seen corresponding path program 2 times [2024-06-28 00:12:56,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:56,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123610921] [2024-06-28 00:12:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:56,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:02,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:02,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123610921] [2024-06-28 00:13:02,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123610921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:02,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:02,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:13:02,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697327567] [2024-06-28 00:13:02,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:02,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:13:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:13:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:13:02,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:13:02,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 922 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:02,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:02,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:13:02,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:03,599 INFO L124 PetriNetUnfolderBase]: 255/476 cut-off events. [2024-06-28 00:13:03,600 INFO L125 PetriNetUnfolderBase]: For 7191/7193 co-relation queries the response was YES. [2024-06-28 00:13:03,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2723 conditions, 476 events. 255/476 cut-off events. For 7191/7193 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1982 event pairs, 58 based on Foata normal form. 4/479 useless extension candidates. Maximal degree in co-relation 2668. Up to 385 conditions per place. [2024-06-28 00:13:03,605 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 106 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-06-28 00:13:03,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 130 transitions, 1320 flow [2024-06-28 00:13:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 00:13:03,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:13:03,608 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 922 flow. Second operand 11 states and 110 transitions. [2024-06-28 00:13:03,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 130 transitions, 1320 flow [2024-06-28 00:13:03,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 130 transitions, 1231 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:13:03,619 INFO L231 Difference]: Finished difference. Result has 117 places, 103 transitions, 925 flow [2024-06-28 00:13:03,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=925, PETRI_PLACES=117, PETRI_TRANSITIONS=103} [2024-06-28 00:13:03,619 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-28 00:13:03,619 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 103 transitions, 925 flow [2024-06-28 00:13:03,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:03,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:03,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:03,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:13:03,620 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)] === [2024-06-28 00:13:03,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:03,620 INFO L85 PathProgramCache]: Analyzing trace with hash -849923850, now seen corresponding path program 1 times [2024-06-28 00:13:03,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:03,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950070740] [2024-06-28 00:13:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:03,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:12,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:12,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950070740] [2024-06-28 00:13:12,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950070740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:12,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:12,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:13:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866734140] [2024-06-28 00:13:12,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:12,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:13:12,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:13:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:13:12,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:13:12,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 103 transitions, 925 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:12,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:12,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:13:12,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:13,771 INFO L124 PetriNetUnfolderBase]: 276/510 cut-off events. [2024-06-28 00:13:13,771 INFO L125 PetriNetUnfolderBase]: For 8629/8632 co-relation queries the response was YES. [2024-06-28 00:13:13,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 510 events. 276/510 cut-off events. For 8629/8632 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2157 event pairs, 53 based on Foata normal form. 4/512 useless extension candidates. Maximal degree in co-relation 2926. Up to 344 conditions per place. [2024-06-28 00:13:13,776 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 82 selfloop transitions, 47 changer transitions 0/131 dead transitions. [2024-06-28 00:13:13,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 131 transitions, 1413 flow [2024-06-28 00:13:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:13:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:13:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 00:13:13,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-28 00:13:13,779 INFO L175 Difference]: Start difference. First operand has 117 places, 103 transitions, 925 flow. Second operand 9 states and 104 transitions. [2024-06-28 00:13:13,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 131 transitions, 1413 flow [2024-06-28 00:13:13,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 131 transitions, 1357 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:13,799 INFO L231 Difference]: Finished difference. Result has 118 places, 109 transitions, 1075 flow [2024-06-28 00:13:13,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1075, PETRI_PLACES=118, PETRI_TRANSITIONS=109} [2024-06-28 00:13:13,800 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-28 00:13:13,815 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 109 transitions, 1075 flow [2024-06-28 00:13:13,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:13,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:13,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:13,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:13:13,816 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)] === [2024-06-28 00:13:13,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:13,816 INFO L85 PathProgramCache]: Analyzing trace with hash 756219132, now seen corresponding path program 3 times [2024-06-28 00:13:13,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:13,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793104340] [2024-06-28 00:13:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:13,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:21,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793104340] [2024-06-28 00:13:21,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793104340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:21,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:21,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:13:21,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401760993] [2024-06-28 00:13:21,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:21,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:13:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:21,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:13:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:13:21,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:13:21,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 109 transitions, 1075 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:21,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:21,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:13:21,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:21,895 INFO L124 PetriNetUnfolderBase]: 273/505 cut-off events. [2024-06-28 00:13:21,895 INFO L125 PetriNetUnfolderBase]: For 9104/9107 co-relation queries the response was YES. [2024-06-28 00:13:21,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 505 events. 273/505 cut-off events. For 9104/9107 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2129 event pairs, 58 based on Foata normal form. 4/507 useless extension candidates. Maximal degree in co-relation 3007. Up to 419 conditions per place. [2024-06-28 00:13:21,899 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 98 selfloop transitions, 27 changer transitions 0/127 dead transitions. [2024-06-28 00:13:21,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 127 transitions, 1369 flow [2024-06-28 00:13:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:13:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:13:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 00:13:21,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-28 00:13:21,901 INFO L175 Difference]: Start difference. First operand has 118 places, 109 transitions, 1075 flow. Second operand 9 states and 92 transitions. [2024-06-28 00:13:21,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 127 transitions, 1369 flow [2024-06-28 00:13:21,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 127 transitions, 1317 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 00:13:21,915 INFO L231 Difference]: Finished difference. Result has 123 places, 109 transitions, 1081 flow [2024-06-28 00:13:21,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1081, PETRI_PLACES=123, PETRI_TRANSITIONS=109} [2024-06-28 00:13:21,916 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-28 00:13:21,916 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 109 transitions, 1081 flow [2024-06-28 00:13:21,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:21,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:21,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:21,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:13:21,917 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)] === [2024-06-28 00:13:21,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1709765160, now seen corresponding path program 4 times [2024-06-28 00:13:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:21,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34876736] [2024-06-28 00:13:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:27,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:27,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34876736] [2024-06-28 00:13:27,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34876736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:27,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:27,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:13:27,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100686021] [2024-06-28 00:13:27,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:27,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:13:27,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:13:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:13:27,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:13:27,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 109 transitions, 1081 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:27,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:27,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:13:27,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:28,333 INFO L124 PetriNetUnfolderBase]: 277/513 cut-off events. [2024-06-28 00:13:28,334 INFO L125 PetriNetUnfolderBase]: For 9807/9810 co-relation queries the response was YES. [2024-06-28 00:13:28,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3141 conditions, 513 events. 277/513 cut-off events. For 9807/9810 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2185 event pairs, 34 based on Foata normal form. 4/515 useless extension candidates. Maximal degree in co-relation 3084. Up to 343 conditions per place. [2024-06-28 00:13:28,338 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 92 selfloop transitions, 33 changer transitions 0/127 dead transitions. [2024-06-28 00:13:28,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 127 transitions, 1431 flow [2024-06-28 00:13:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:13:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:13:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 00:13:28,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 00:13:28,340 INFO L175 Difference]: Start difference. First operand has 123 places, 109 transitions, 1081 flow. Second operand 8 states and 84 transitions. [2024-06-28 00:13:28,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 127 transitions, 1431 flow [2024-06-28 00:13:28,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 127 transitions, 1379 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 00:13:28,356 INFO L231 Difference]: Finished difference. Result has 125 places, 110 transitions, 1127 flow [2024-06-28 00:13:28,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1127, PETRI_PLACES=125, PETRI_TRANSITIONS=110} [2024-06-28 00:13:28,356 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-28 00:13:28,357 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 110 transitions, 1127 flow [2024-06-28 00:13:28,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:28,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:28,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:28,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:13:28,357 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)] === [2024-06-28 00:13:28,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:28,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1709825734, now seen corresponding path program 2 times [2024-06-28 00:13:28,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:28,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245100146] [2024-06-28 00:13:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:34,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:34,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245100146] [2024-06-28 00:13:34,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245100146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:34,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:34,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:13:34,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964102696] [2024-06-28 00:13:34,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:34,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:13:34,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:13:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:13:34,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:13:34,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 110 transitions, 1127 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:34,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:34,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:13:34,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:35,154 INFO L124 PetriNetUnfolderBase]: 288/531 cut-off events. [2024-06-28 00:13:35,155 INFO L125 PetriNetUnfolderBase]: For 10968/10971 co-relation queries the response was YES. [2024-06-28 00:13:35,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3368 conditions, 531 events. 288/531 cut-off events. For 10968/10971 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2272 event pairs, 53 based on Foata normal form. 4/533 useless extension candidates. Maximal degree in co-relation 3309. Up to 376 conditions per place. [2024-06-28 00:13:35,159 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 83 selfloop transitions, 48 changer transitions 0/133 dead transitions. [2024-06-28 00:13:35,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 133 transitions, 1597 flow [2024-06-28 00:13:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:13:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:13:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 00:13:35,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-28 00:13:35,163 INFO L175 Difference]: Start difference. First operand has 125 places, 110 transitions, 1127 flow. Second operand 9 states and 98 transitions. [2024-06-28 00:13:35,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 133 transitions, 1597 flow [2024-06-28 00:13:35,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 133 transitions, 1521 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:13:35,180 INFO L231 Difference]: Finished difference. Result has 128 places, 114 transitions, 1215 flow [2024-06-28 00:13:35,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1215, PETRI_PLACES=128, PETRI_TRANSITIONS=114} [2024-06-28 00:13:35,181 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-28 00:13:35,181 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 114 transitions, 1215 flow [2024-06-28 00:13:35,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:35,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:35,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:35,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:13:35,182 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)] === [2024-06-28 00:13:35,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:35,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1709825610, now seen corresponding path program 5 times [2024-06-28 00:13:35,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:35,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701082167] [2024-06-28 00:13:35,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:35,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:40,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:40,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701082167] [2024-06-28 00:13:40,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701082167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:40,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:40,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:13:40,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767601274] [2024-06-28 00:13:40,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:40,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:13:40,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:40,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:13:40,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:13:40,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:13:40,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 114 transitions, 1215 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:40,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:40,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:13:40,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:41,398 INFO L124 PetriNetUnfolderBase]: 292/539 cut-off events. [2024-06-28 00:13:41,398 INFO L125 PetriNetUnfolderBase]: For 10417/10420 co-relation queries the response was YES. [2024-06-28 00:13:41,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3419 conditions, 539 events. 292/539 cut-off events. For 10417/10420 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2321 event pairs, 59 based on Foata normal form. 4/541 useless extension candidates. Maximal degree in co-relation 3360. Up to 444 conditions per place. [2024-06-28 00:13:41,406 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 99 selfloop transitions, 29 changer transitions 0/130 dead transitions. [2024-06-28 00:13:41,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 1521 flow [2024-06-28 00:13:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:13:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:13:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 00:13:41,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458333333333333 [2024-06-28 00:13:41,408 INFO L175 Difference]: Start difference. First operand has 128 places, 114 transitions, 1215 flow. Second operand 8 states and 83 transitions. [2024-06-28 00:13:41,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 1521 flow [2024-06-28 00:13:41,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1449 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:13:41,427 INFO L231 Difference]: Finished difference. Result has 130 places, 115 transitions, 1223 flow [2024-06-28 00:13:41,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1223, PETRI_PLACES=130, PETRI_TRANSITIONS=115} [2024-06-28 00:13:41,428 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-28 00:13:41,428 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 115 transitions, 1223 flow [2024-06-28 00:13:41,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:41,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:41,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:41,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:13:41,429 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)] === [2024-06-28 00:13:41,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:41,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1712626894, now seen corresponding path program 3 times [2024-06-28 00:13:41,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:41,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376754523] [2024-06-28 00:13:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:41,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:50,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376754523] [2024-06-28 00:13:50,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376754523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:50,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:50,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:13:50,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566963586] [2024-06-28 00:13:50,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:50,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:13:50,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:50,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:13:50,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:13:50,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:13:50,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 115 transitions, 1223 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:50,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:50,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:13:50,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:50,793 INFO L124 PetriNetUnfolderBase]: 298/551 cut-off events. [2024-06-28 00:13:50,793 INFO L125 PetriNetUnfolderBase]: For 10438/10440 co-relation queries the response was YES. [2024-06-28 00:13:50,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3498 conditions, 551 events. 298/551 cut-off events. For 10438/10440 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2406 event pairs, 64 based on Foata normal form. 4/554 useless extension candidates. Maximal degree in co-relation 3438. Up to 434 conditions per place. [2024-06-28 00:13:50,799 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 90 selfloop transitions, 44 changer transitions 0/136 dead transitions. [2024-06-28 00:13:50,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 136 transitions, 1623 flow [2024-06-28 00:13:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:50,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 00:13:50,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-28 00:13:50,802 INFO L175 Difference]: Start difference. First operand has 130 places, 115 transitions, 1223 flow. Second operand 10 states and 101 transitions. [2024-06-28 00:13:50,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 136 transitions, 1623 flow [2024-06-28 00:13:50,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 136 transitions, 1555 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:13:50,826 INFO L231 Difference]: Finished difference. Result has 133 places, 117 transitions, 1279 flow [2024-06-28 00:13:50,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1279, PETRI_PLACES=133, PETRI_TRANSITIONS=117} [2024-06-28 00:13:50,827 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2024-06-28 00:13:50,827 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 117 transitions, 1279 flow [2024-06-28 00:13:50,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:50,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:50,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:50,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:13:50,828 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)] === [2024-06-28 00:13:50,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:50,829 INFO L85 PathProgramCache]: Analyzing trace with hash 75049788, now seen corresponding path program 4 times [2024-06-28 00:13:50,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:50,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909045669] [2024-06-28 00:13:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:50,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:01,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:01,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909045669] [2024-06-28 00:14:01,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909045669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:01,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:01,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:14:01,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786853239] [2024-06-28 00:14:01,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:01,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:14:01,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:01,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:14:01,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:14:01,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:14:01,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 117 transitions, 1279 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:01,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:01,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:14:01,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:02,337 INFO L124 PetriNetUnfolderBase]: 304/561 cut-off events. [2024-06-28 00:14:02,337 INFO L125 PetriNetUnfolderBase]: For 10476/10478 co-relation queries the response was YES. [2024-06-28 00:14:02,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 561 events. 304/561 cut-off events. For 10476/10478 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2445 event pairs, 64 based on Foata normal form. 4/564 useless extension candidates. Maximal degree in co-relation 3543. Up to 433 conditions per place. [2024-06-28 00:14:02,341 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 91 selfloop transitions, 46 changer transitions 0/139 dead transitions. [2024-06-28 00:14:02,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 139 transitions, 1699 flow [2024-06-28 00:14:02,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:14:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:14:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 00:14:02,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 00:14:02,362 INFO L175 Difference]: Start difference. First operand has 133 places, 117 transitions, 1279 flow. Second operand 10 states and 104 transitions. [2024-06-28 00:14:02,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 139 transitions, 1699 flow [2024-06-28 00:14:02,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 139 transitions, 1595 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:14:02,381 INFO L231 Difference]: Finished difference. Result has 135 places, 119 transitions, 1304 flow [2024-06-28 00:14:02,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1304, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2024-06-28 00:14:02,383 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-06-28 00:14:02,383 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 1304 flow [2024-06-28 00:14:02,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:02,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:02,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:02,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:14:02,383 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)] === [2024-06-28 00:14:02,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:02,384 INFO L85 PathProgramCache]: Analyzing trace with hash 75049664, now seen corresponding path program 6 times [2024-06-28 00:14:02,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:02,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336630831] [2024-06-28 00:14:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:02,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:12,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:12,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336630831] [2024-06-28 00:14:12,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336630831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:12,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:12,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:14:12,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570042584] [2024-06-28 00:14:12,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:12,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:14:12,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:12,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:14:12,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:14:12,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:14:12,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 1304 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:12,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:12,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:14:12,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:12,530 INFO L124 PetriNetUnfolderBase]: 301/556 cut-off events. [2024-06-28 00:14:12,530 INFO L125 PetriNetUnfolderBase]: For 10610/10612 co-relation queries the response was YES. [2024-06-28 00:14:12,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3580 conditions, 556 events. 301/556 cut-off events. For 10610/10612 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2424 event pairs, 65 based on Foata normal form. 4/559 useless extension candidates. Maximal degree in co-relation 3519. Up to 483 conditions per place. [2024-06-28 00:14:12,536 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 106 selfloop transitions, 27 changer transitions 0/135 dead transitions. [2024-06-28 00:14:12,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 1608 flow [2024-06-28 00:14:12,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:14:12,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:14:12,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 00:14:12,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-28 00:14:12,541 INFO L175 Difference]: Start difference. First operand has 135 places, 119 transitions, 1304 flow. Second operand 9 states and 89 transitions. [2024-06-28 00:14:12,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 1608 flow [2024-06-28 00:14:12,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 1495 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:14:12,560 INFO L231 Difference]: Finished difference. Result has 136 places, 119 transitions, 1249 flow [2024-06-28 00:14:12,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1249, PETRI_PLACES=136, PETRI_TRANSITIONS=119} [2024-06-28 00:14:12,560 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 107 predicate places. [2024-06-28 00:14:12,560 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 119 transitions, 1249 flow [2024-06-28 00:14:12,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:12,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:12,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:12,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:14:12,561 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)] === [2024-06-28 00:14:12,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash -430934324, now seen corresponding path program 5 times [2024-06-28 00:14:12,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:12,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622516479] [2024-06-28 00:14:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:12,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:18,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:18,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622516479] [2024-06-28 00:14:18,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622516479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:18,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:18,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:18,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421572796] [2024-06-28 00:14:18,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:18,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:18,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:18,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:18,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:18,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:14:18,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 119 transitions, 1249 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:18,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:18,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:14:18,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:18,612 INFO L124 PetriNetUnfolderBase]: 304/564 cut-off events. [2024-06-28 00:14:18,612 INFO L125 PetriNetUnfolderBase]: For 10857/10860 co-relation queries the response was YES. [2024-06-28 00:14:18,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3566 conditions, 564 events. 304/564 cut-off events. For 10857/10860 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2472 event pairs, 91 based on Foata normal form. 3/565 useless extension candidates. Maximal degree in co-relation 3504. Up to 516 conditions per place. [2024-06-28 00:14:18,616 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 110 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2024-06-28 00:14:18,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 129 transitions, 1543 flow [2024-06-28 00:14:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:14:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:14:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-06-28 00:14:18,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:14:18,618 INFO L175 Difference]: Start difference. First operand has 136 places, 119 transitions, 1249 flow. Second operand 7 states and 70 transitions. [2024-06-28 00:14:18,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 129 transitions, 1543 flow [2024-06-28 00:14:18,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 129 transitions, 1472 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:14:18,640 INFO L231 Difference]: Finished difference. Result has 135 places, 121 transitions, 1243 flow [2024-06-28 00:14:18,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1243, PETRI_PLACES=135, PETRI_TRANSITIONS=121} [2024-06-28 00:14:18,640 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-06-28 00:14:18,641 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 121 transitions, 1243 flow [2024-06-28 00:14:18,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:18,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:18,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:18,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:14:18,641 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)] === [2024-06-28 00:14:18,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1099984830, now seen corresponding path program 1 times [2024-06-28 00:14:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:18,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550605327] [2024-06-28 00:14:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:18,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:24,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:24,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550605327] [2024-06-28 00:14:24,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550605327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:24,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:24,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:24,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819449219] [2024-06-28 00:14:24,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:24,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:24,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:24,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:24,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:24,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:14:24,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 121 transitions, 1243 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:24,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:24,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:14:24,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:24,754 INFO L124 PetriNetUnfolderBase]: 300/558 cut-off events. [2024-06-28 00:14:24,754 INFO L125 PetriNetUnfolderBase]: For 11044/11047 co-relation queries the response was YES. [2024-06-28 00:14:24,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 558 events. 300/558 cut-off events. For 11044/11047 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2440 event pairs, 90 based on Foata normal form. 4/560 useless extension candidates. Maximal degree in co-relation 3401. Up to 487 conditions per place. [2024-06-28 00:14:24,758 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 98 selfloop transitions, 28 changer transitions 0/128 dead transitions. [2024-06-28 00:14:24,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 128 transitions, 1511 flow [2024-06-28 00:14:24,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:14:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:14:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 75 transitions. [2024-06-28 00:14:24,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-28 00:14:24,760 INFO L175 Difference]: Start difference. First operand has 135 places, 121 transitions, 1243 flow. Second operand 8 states and 75 transitions. [2024-06-28 00:14:24,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 128 transitions, 1511 flow [2024-06-28 00:14:24,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 128 transitions, 1440 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 00:14:24,779 INFO L231 Difference]: Finished difference. Result has 138 places, 121 transitions, 1241 flow [2024-06-28 00:14:24,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1241, PETRI_PLACES=138, PETRI_TRANSITIONS=121} [2024-06-28 00:14:24,780 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2024-06-28 00:14:24,780 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 121 transitions, 1241 flow [2024-06-28 00:14:24,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:24,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:24,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:24,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:14:24,780 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)] === [2024-06-28 00:14:24,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1099985078, now seen corresponding path program 1 times [2024-06-28 00:14:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:24,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937106567] [2024-06-28 00:14:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:24,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:31,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:31,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937106567] [2024-06-28 00:14:31,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937106567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:31,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:31,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895735458] [2024-06-28 00:14:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:31,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:14:31,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 121 transitions, 1241 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:31,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:31,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:14:31,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:32,965 INFO L124 PetriNetUnfolderBase]: 304/566 cut-off events. [2024-06-28 00:14:32,965 INFO L125 PetriNetUnfolderBase]: For 11784/11787 co-relation queries the response was YES. [2024-06-28 00:14:32,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3516 conditions, 566 events. 304/566 cut-off events. For 11784/11787 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2488 event pairs, 90 based on Foata normal form. 4/568 useless extension candidates. Maximal degree in co-relation 3453. Up to 498 conditions per place. [2024-06-28 00:14:32,970 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 106 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-06-28 00:14:32,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 130 transitions, 1525 flow [2024-06-28 00:14:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:14:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:14:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 74 transitions. [2024-06-28 00:14:32,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30833333333333335 [2024-06-28 00:14:32,973 INFO L175 Difference]: Start difference. First operand has 138 places, 121 transitions, 1241 flow. Second operand 8 states and 74 transitions. [2024-06-28 00:14:32,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 130 transitions, 1525 flow [2024-06-28 00:14:33,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 130 transitions, 1439 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:14:33,003 INFO L231 Difference]: Finished difference. Result has 138 places, 122 transitions, 1217 flow [2024-06-28 00:14:33,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1217, PETRI_PLACES=138, PETRI_TRANSITIONS=122} [2024-06-28 00:14:33,004 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2024-06-28 00:14:33,004 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 122 transitions, 1217 flow [2024-06-28 00:14:33,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:33,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:33,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:33,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:14:33,005 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)] === [2024-06-28 00:14:33,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:33,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1099800380, now seen corresponding path program 7 times [2024-06-28 00:14:33,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:33,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504996191] [2024-06-28 00:14:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:33,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:40,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504996191] [2024-06-28 00:14:40,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504996191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:40,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:40,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269481505] [2024-06-28 00:14:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:40,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:40,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:40,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:40,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:14:40,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 122 transitions, 1217 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:40,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:40,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:14:40,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:40,939 INFO L124 PetriNetUnfolderBase]: 301/561 cut-off events. [2024-06-28 00:14:40,939 INFO L125 PetriNetUnfolderBase]: For 10359/10362 co-relation queries the response was YES. [2024-06-28 00:14:40,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3400 conditions, 561 events. 301/561 cut-off events. For 10359/10362 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2469 event pairs, 92 based on Foata normal form. 4/563 useless extension candidates. Maximal degree in co-relation 3337. Up to 505 conditions per place. [2024-06-28 00:14:40,947 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 109 selfloop transitions, 20 changer transitions 0/131 dead transitions. [2024-06-28 00:14:40,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 131 transitions, 1495 flow [2024-06-28 00:14:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:14:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:14:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2024-06-28 00:14:40,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29259259259259257 [2024-06-28 00:14:40,949 INFO L175 Difference]: Start difference. First operand has 138 places, 122 transitions, 1217 flow. Second operand 9 states and 79 transitions. [2024-06-28 00:14:40,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 131 transitions, 1495 flow [2024-06-28 00:14:40,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 131 transitions, 1437 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 00:14:40,980 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 1203 flow [2024-06-28 00:14:40,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1203, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-28 00:14:40,984 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-06-28 00:14:40,984 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 1203 flow [2024-06-28 00:14:40,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:40,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:40,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:40,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:14:40,985 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)] === [2024-06-28 00:14:40,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:40,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1099805154, now seen corresponding path program 6 times [2024-06-28 00:14:40,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:40,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981938321] [2024-06-28 00:14:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:41,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:46,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:46,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981938321] [2024-06-28 00:14:46,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981938321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:46,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:46,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:46,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675691348] [2024-06-28 00:14:46,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:46,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:46,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:46,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:46,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:14:46,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:46,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:46,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:14:46,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:47,574 INFO L124 PetriNetUnfolderBase]: 307/571 cut-off events. [2024-06-28 00:14:47,575 INFO L125 PetriNetUnfolderBase]: For 10306/10309 co-relation queries the response was YES. [2024-06-28 00:14:47,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 571 events. 307/571 cut-off events. For 10306/10309 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2540 event pairs, 89 based on Foata normal form. 4/573 useless extension candidates. Maximal degree in co-relation 3375. Up to 486 conditions per place. [2024-06-28 00:14:47,579 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 97 selfloop transitions, 35 changer transitions 0/134 dead transitions. [2024-06-28 00:14:47,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 134 transitions, 1529 flow [2024-06-28 00:14:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:14:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:14:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2024-06-28 00:14:47,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30333333333333334 [2024-06-28 00:14:47,582 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 1203 flow. Second operand 10 states and 91 transitions. [2024-06-28 00:14:47,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 134 transitions, 1529 flow [2024-06-28 00:14:47,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 134 transitions, 1449 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:14:47,602 INFO L231 Difference]: Finished difference. Result has 141 places, 124 transitions, 1233 flow [2024-06-28 00:14:47,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1233, PETRI_PLACES=141, PETRI_TRANSITIONS=124} [2024-06-28 00:14:47,603 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 112 predicate places. [2024-06-28 00:14:47,603 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 124 transitions, 1233 flow [2024-06-28 00:14:47,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:47,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:47,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:47,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:14:47,604 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)] === [2024-06-28 00:14:47,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:47,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1099800504, now seen corresponding path program 7 times [2024-06-28 00:14:47,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:47,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590800410] [2024-06-28 00:14:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:47,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:54,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:54,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590800410] [2024-06-28 00:14:54,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590800410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:54,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:54,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:14:54,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091245167] [2024-06-28 00:14:54,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:54,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:14:54,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:54,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:14:54,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:14:54,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:14:54,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 124 transitions, 1233 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:54,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:54,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:14:54,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:55,378 INFO L124 PetriNetUnfolderBase]: 338/623 cut-off events. [2024-06-28 00:14:55,379 INFO L125 PetriNetUnfolderBase]: For 11710/11712 co-relation queries the response was YES. [2024-06-28 00:14:55,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3849 conditions, 623 events. 338/623 cut-off events. For 11710/11712 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2792 event pairs, 88 based on Foata normal form. 4/626 useless extension candidates. Maximal degree in co-relation 3785. Up to 543 conditions per place. [2024-06-28 00:14:55,398 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 125 selfloop transitions, 32 changer transitions 0/159 dead transitions. [2024-06-28 00:14:55,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 159 transitions, 1877 flow [2024-06-28 00:14:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:14:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:14:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-28 00:14:55,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30833333333333335 [2024-06-28 00:14:55,408 INFO L175 Difference]: Start difference. First operand has 141 places, 124 transitions, 1233 flow. Second operand 12 states and 111 transitions. [2024-06-28 00:14:55,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 159 transitions, 1877 flow [2024-06-28 00:14:55,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 159 transitions, 1768 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:14:55,446 INFO L231 Difference]: Finished difference. Result has 148 places, 139 transitions, 1439 flow [2024-06-28 00:14:55,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1439, PETRI_PLACES=148, PETRI_TRANSITIONS=139} [2024-06-28 00:14:55,447 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2024-06-28 00:14:55,447 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 1439 flow [2024-06-28 00:14:55,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:55,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:55,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:55,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:14:55,447 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)] === [2024-06-28 00:14:55,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash -836188444, now seen corresponding path program 2 times [2024-06-28 00:14:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440899606] [2024-06-28 00:14:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:03,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:03,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440899606] [2024-06-28 00:15:03,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440899606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:03,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:03,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757586904] [2024-06-28 00:15:03,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:03,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:03,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:03,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:03,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:03,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:15:03,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 1439 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 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) [2024-06-28 00:15:03,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:03,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:15:03,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:04,348 INFO L124 PetriNetUnfolderBase]: 342/632 cut-off events. [2024-06-28 00:15:04,348 INFO L125 PetriNetUnfolderBase]: For 12524/12527 co-relation queries the response was YES. [2024-06-28 00:15:04,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3914 conditions, 632 events. 342/632 cut-off events. For 12524/12527 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2843 event pairs, 94 based on Foata normal form. 4/633 useless extension candidates. Maximal degree in co-relation 3847. Up to 550 conditions per place. [2024-06-28 00:15:04,368 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 118 selfloop transitions, 29 changer transitions 0/149 dead transitions. [2024-06-28 00:15:04,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 149 transitions, 1765 flow [2024-06-28 00:15:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-06-28 00:15:04,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3037037037037037 [2024-06-28 00:15:04,371 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 1439 flow. Second operand 9 states and 82 transitions. [2024-06-28 00:15:04,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 149 transitions, 1765 flow [2024-06-28 00:15:04,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 149 transitions, 1727 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 00:15:04,426 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 1477 flow [2024-06-28 00:15:04,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1477, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2024-06-28 00:15:04,426 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-06-28 00:15:04,426 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 1477 flow [2024-06-28 00:15:04,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 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) [2024-06-28 00:15:04,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:04,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:04,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:15:04,427 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)] === [2024-06-28 00:15:04,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:04,427 INFO L85 PathProgramCache]: Analyzing trace with hash 420185632, now seen corresponding path program 2 times [2024-06-28 00:15:04,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:04,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149233839] [2024-06-28 00:15:04,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:04,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:10,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149233839] [2024-06-28 00:15:10,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149233839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:10,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:10,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:10,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483794914] [2024-06-28 00:15:10,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:10,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:10,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:10,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:10,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:10,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:15:10,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 1477 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:10,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:10,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:15:10,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:11,082 INFO L124 PetriNetUnfolderBase]: 340/629 cut-off events. [2024-06-28 00:15:11,082 INFO L125 PetriNetUnfolderBase]: For 12308/12311 co-relation queries the response was YES. [2024-06-28 00:15:11,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 629 events. 340/629 cut-off events. For 12308/12311 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2833 event pairs, 93 based on Foata normal form. 3/629 useless extension candidates. Maximal degree in co-relation 3847. Up to 544 conditions per place. [2024-06-28 00:15:11,087 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 117 selfloop transitions, 32 changer transitions 0/151 dead transitions. [2024-06-28 00:15:11,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 151 transitions, 1843 flow [2024-06-28 00:15:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:15:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:15:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-28 00:15:11,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32916666666666666 [2024-06-28 00:15:11,089 INFO L175 Difference]: Start difference. First operand has 153 places, 140 transitions, 1477 flow. Second operand 8 states and 79 transitions. [2024-06-28 00:15:11,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 151 transitions, 1843 flow [2024-06-28 00:15:11,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 151 transitions, 1769 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:11,121 INFO L231 Difference]: Finished difference. Result has 154 places, 142 transitions, 1517 flow [2024-06-28 00:15:11,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1517, PETRI_PLACES=154, PETRI_TRANSITIONS=142} [2024-06-28 00:15:11,122 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-28 00:15:11,122 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 142 transitions, 1517 flow [2024-06-28 00:15:11,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:11,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:11,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:11,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:15:11,123 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)] === [2024-06-28 00:15:11,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:11,123 INFO L85 PathProgramCache]: Analyzing trace with hash 411904726, now seen corresponding path program 8 times [2024-06-28 00:15:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:11,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222817758] [2024-06-28 00:15:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:18,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:18,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222817758] [2024-06-28 00:15:18,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222817758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:18,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:18,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:18,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461316207] [2024-06-28 00:15:18,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:18,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:18,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:18,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:18,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:18,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:15:18,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 142 transitions, 1517 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:18,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:18,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:15:18,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:19,325 INFO L124 PetriNetUnfolderBase]: 348/641 cut-off events. [2024-06-28 00:15:19,325 INFO L125 PetriNetUnfolderBase]: For 14058/14061 co-relation queries the response was YES. [2024-06-28 00:15:19,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4076 conditions, 641 events. 348/641 cut-off events. For 14058/14061 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2901 event pairs, 65 based on Foata normal form. 4/642 useless extension candidates. Maximal degree in co-relation 4008. Up to 507 conditions per place. [2024-06-28 00:15:19,348 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 108 selfloop transitions, 52 changer transitions 0/162 dead transitions. [2024-06-28 00:15:19,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 162 transitions, 2016 flow [2024-06-28 00:15:19,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:15:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:15:19,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 00:15:19,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 00:15:19,351 INFO L175 Difference]: Start difference. First operand has 154 places, 142 transitions, 1517 flow. Second operand 8 states and 88 transitions. [2024-06-28 00:15:19,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 162 transitions, 2016 flow [2024-06-28 00:15:19,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 162 transitions, 1927 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 00:15:19,400 INFO L231 Difference]: Finished difference. Result has 158 places, 147 transitions, 1659 flow [2024-06-28 00:15:19,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1659, PETRI_PLACES=158, PETRI_TRANSITIONS=147} [2024-06-28 00:15:19,400 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 129 predicate places. [2024-06-28 00:15:19,401 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 147 transitions, 1659 flow [2024-06-28 00:15:19,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:19,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:19,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:19,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:15:19,416 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)] === [2024-06-28 00:15:19,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:19,417 INFO L85 PathProgramCache]: Analyzing trace with hash 420482550, now seen corresponding path program 3 times [2024-06-28 00:15:19,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:19,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241194857] [2024-06-28 00:15:19,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:19,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:26,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:26,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241194857] [2024-06-28 00:15:26,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241194857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:26,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:26,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:26,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856767361] [2024-06-28 00:15:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:26,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:26,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:26,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:15:26,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 147 transitions, 1659 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:26,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:26,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:15:26,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:27,384 INFO L124 PetriNetUnfolderBase]: 345/639 cut-off events. [2024-06-28 00:15:27,384 INFO L125 PetriNetUnfolderBase]: For 14433/14436 co-relation queries the response was YES. [2024-06-28 00:15:27,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 639 events. 345/639 cut-off events. For 14433/14436 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2877 event pairs, 90 based on Foata normal form. 4/640 useless extension candidates. Maximal degree in co-relation 4099. Up to 537 conditions per place. [2024-06-28 00:15:27,390 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 125 selfloop transitions, 30 changer transitions 0/157 dead transitions. [2024-06-28 00:15:27,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 157 transitions, 1991 flow [2024-06-28 00:15:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2024-06-28 00:15:27,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2962962962962963 [2024-06-28 00:15:27,391 INFO L175 Difference]: Start difference. First operand has 158 places, 147 transitions, 1659 flow. Second operand 9 states and 80 transitions. [2024-06-28 00:15:27,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 157 transitions, 1991 flow [2024-06-28 00:15:27,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 157 transitions, 1920 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 00:15:27,419 INFO L231 Difference]: Finished difference. Result has 164 places, 147 transitions, 1652 flow [2024-06-28 00:15:27,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1652, PETRI_PLACES=164, PETRI_TRANSITIONS=147} [2024-06-28 00:15:27,420 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-28 00:15:27,420 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 147 transitions, 1652 flow [2024-06-28 00:15:27,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:27,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:27,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:27,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:15:27,421 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)] === [2024-06-28 00:15:27,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:27,421 INFO L85 PathProgramCache]: Analyzing trace with hash 183825946, now seen corresponding path program 9 times [2024-06-28 00:15:27,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:27,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116086796] [2024-06-28 00:15:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:27,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:34,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:34,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116086796] [2024-06-28 00:15:34,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116086796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:34,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:34,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:15:34,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903830991] [2024-06-28 00:15:34,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:34,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:15:34,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:15:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:15:34,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:15:34,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 147 transitions, 1652 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:34,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:34,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:15:34,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:35,065 INFO L124 PetriNetUnfolderBase]: 356/657 cut-off events. [2024-06-28 00:15:35,065 INFO L125 PetriNetUnfolderBase]: For 15861/15864 co-relation queries the response was YES. [2024-06-28 00:15:35,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 657 events. 356/657 cut-off events. For 15861/15864 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2990 event pairs, 95 based on Foata normal form. 4/658 useless extension candidates. Maximal degree in co-relation 4302. Up to 565 conditions per place. [2024-06-28 00:15:35,070 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 127 selfloop transitions, 35 changer transitions 0/164 dead transitions. [2024-06-28 00:15:35,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 164 transitions, 2170 flow [2024-06-28 00:15:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:15:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:15:35,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-28 00:15:35,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-28 00:15:35,073 INFO L175 Difference]: Start difference. First operand has 164 places, 147 transitions, 1652 flow. Second operand 11 states and 99 transitions. [2024-06-28 00:15:35,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 164 transitions, 2170 flow [2024-06-28 00:15:35,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 164 transitions, 2100 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:35,105 INFO L231 Difference]: Finished difference. Result has 168 places, 151 transitions, 1737 flow [2024-06-28 00:15:35,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1737, PETRI_PLACES=168, PETRI_TRANSITIONS=151} [2024-06-28 00:15:35,105 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-28 00:15:35,105 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 151 transitions, 1737 flow [2024-06-28 00:15:35,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:35,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:35,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:35,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:15:35,106 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)] === [2024-06-28 00:15:35,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:35,106 INFO L85 PathProgramCache]: Analyzing trace with hash 184003576, now seen corresponding path program 10 times [2024-06-28 00:15:35,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:35,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514425353] [2024-06-28 00:15:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:35,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:41,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:41,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514425353] [2024-06-28 00:15:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514425353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:41,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:41,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:41,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155016179] [2024-06-28 00:15:41,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:41,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:41,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:41,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:15:41,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 151 transitions, 1737 flow. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:41,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:41,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:15:41,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:41,965 INFO L124 PetriNetUnfolderBase]: 366/674 cut-off events. [2024-06-28 00:15:41,965 INFO L125 PetriNetUnfolderBase]: For 16790/16793 co-relation queries the response was YES. [2024-06-28 00:15:41,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4488 conditions, 674 events. 366/674 cut-off events. For 16790/16793 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3086 event pairs, 95 based on Foata normal form. 5/676 useless extension candidates. Maximal degree in co-relation 4414. Up to 607 conditions per place. [2024-06-28 00:15:41,972 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 138 selfloop transitions, 29 changer transitions 0/169 dead transitions. [2024-06-28 00:15:41,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 169 transitions, 2219 flow [2024-06-28 00:15:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:15:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:15:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 89 transitions. [2024-06-28 00:15:41,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2966666666666667 [2024-06-28 00:15:41,975 INFO L175 Difference]: Start difference. First operand has 168 places, 151 transitions, 1737 flow. Second operand 10 states and 89 transitions. [2024-06-28 00:15:41,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 169 transitions, 2219 flow [2024-06-28 00:15:42,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 169 transitions, 2132 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 00:15:42,021 INFO L231 Difference]: Finished difference. Result has 172 places, 159 transitions, 1856 flow [2024-06-28 00:15:42,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1654, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1856, PETRI_PLACES=172, PETRI_TRANSITIONS=159} [2024-06-28 00:15:42,028 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2024-06-28 00:15:42,028 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 159 transitions, 1856 flow [2024-06-28 00:15:42,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:42,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:42,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:42,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:15:42,029 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)] === [2024-06-28 00:15:42,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash -764503712, now seen corresponding path program 1 times [2024-06-28 00:15:42,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:42,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701987251] [2024-06-28 00:15:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:42,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:48,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:48,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701987251] [2024-06-28 00:15:48,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701987251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:48,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:48,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:15:48,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844089267] [2024-06-28 00:15:48,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:48,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:15:48,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:48,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:15:48,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:15:48,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:15:48,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 159 transitions, 1856 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:48,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:48,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:15:48,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:49,718 INFO L124 PetriNetUnfolderBase]: 407/756 cut-off events. [2024-06-28 00:15:49,719 INFO L125 PetriNetUnfolderBase]: For 26327/26330 co-relation queries the response was YES. [2024-06-28 00:15:49,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5249 conditions, 756 events. 407/756 cut-off events. For 26327/26330 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3578 event pairs, 62 based on Foata normal form. 10/763 useless extension candidates. Maximal degree in co-relation 5172. Up to 263 conditions per place. [2024-06-28 00:15:49,726 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 100 selfloop transitions, 75 changer transitions 15/192 dead transitions. [2024-06-28 00:15:49,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 192 transitions, 2542 flow [2024-06-28 00:15:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:15:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:15:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:15:49,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:15:49,728 INFO L175 Difference]: Start difference. First operand has 172 places, 159 transitions, 1856 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:15:49,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 192 transitions, 2542 flow [2024-06-28 00:15:49,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 192 transitions, 2456 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:49,798 INFO L231 Difference]: Finished difference. Result has 176 places, 156 transitions, 1906 flow [2024-06-28 00:15:49,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1906, PETRI_PLACES=176, PETRI_TRANSITIONS=156} [2024-06-28 00:15:49,799 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-06-28 00:15:49,799 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 156 transitions, 1906 flow [2024-06-28 00:15:49,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:49,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:49,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:49,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:15:49,800 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)] === [2024-06-28 00:15:49,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1966084880, now seen corresponding path program 2 times [2024-06-28 00:15:49,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:49,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797336913] [2024-06-28 00:15:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:49,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:01,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:01,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797336913] [2024-06-28 00:16:01,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797336913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:01,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:01,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:01,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214939217] [2024-06-28 00:16:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:01,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:01,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:01,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:01,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:16:01,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 156 transitions, 1906 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:01,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:01,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:16:01,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:02,798 INFO L124 PetriNetUnfolderBase]: 424/789 cut-off events. [2024-06-28 00:16:02,798 INFO L125 PetriNetUnfolderBase]: For 34149/34152 co-relation queries the response was YES. [2024-06-28 00:16:02,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5908 conditions, 789 events. 424/789 cut-off events. For 34149/34152 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3768 event pairs, 104 based on Foata normal form. 10/796 useless extension candidates. Maximal degree in co-relation 5831. Up to 588 conditions per place. [2024-06-28 00:16:02,806 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 155 selfloop transitions, 19 changer transitions 13/189 dead transitions. [2024-06-28 00:16:02,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 189 transitions, 2520 flow [2024-06-28 00:16:02,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:16:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:16:02,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 00:16:02,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-28 00:16:02,810 INFO L175 Difference]: Start difference. First operand has 176 places, 156 transitions, 1906 flow. Second operand 11 states and 114 transitions. [2024-06-28 00:16:02,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 189 transitions, 2520 flow [2024-06-28 00:16:02,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 189 transitions, 2362 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:16:02,883 INFO L231 Difference]: Finished difference. Result has 173 places, 153 transitions, 1763 flow [2024-06-28 00:16:02,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1763, PETRI_PLACES=173, PETRI_TRANSITIONS=153} [2024-06-28 00:16:02,883 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-28 00:16:02,883 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 153 transitions, 1763 flow [2024-06-28 00:16:02,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:02,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:02,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:02,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:16:02,884 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)] === [2024-06-28 00:16:02,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:02,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1967962550, now seen corresponding path program 3 times [2024-06-28 00:16:02,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:02,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312693917] [2024-06-28 00:16:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:02,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:13,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:13,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312693917] [2024-06-28 00:16:13,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312693917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:13,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:13,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:13,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764196972] [2024-06-28 00:16:13,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:13,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:13,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:16:13,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 153 transitions, 1763 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:13,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:13,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:16:13,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:15,489 INFO L124 PetriNetUnfolderBase]: 407/758 cut-off events. [2024-06-28 00:16:15,489 INFO L125 PetriNetUnfolderBase]: For 33715/33718 co-relation queries the response was YES. [2024-06-28 00:16:15,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5590 conditions, 758 events. 407/758 cut-off events. For 33715/33718 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3580 event pairs, 74 based on Foata normal form. 12/767 useless extension candidates. Maximal degree in co-relation 5514. Up to 457 conditions per place. [2024-06-28 00:16:15,509 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 84 selfloop transitions, 83 changer transitions 12/181 dead transitions. [2024-06-28 00:16:15,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 181 transitions, 2339 flow [2024-06-28 00:16:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:16:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:16:15,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 00:16:15,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-28 00:16:15,511 INFO L175 Difference]: Start difference. First operand has 173 places, 153 transitions, 1763 flow. Second operand 11 states and 115 transitions. [2024-06-28 00:16:15,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 181 transitions, 2339 flow [2024-06-28 00:16:15,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 181 transitions, 2294 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:16:15,578 INFO L231 Difference]: Finished difference. Result has 171 places, 150 transitions, 1862 flow [2024-06-28 00:16:15,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1862, PETRI_PLACES=171, PETRI_TRANSITIONS=150} [2024-06-28 00:16:15,579 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-06-28 00:16:15,579 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 150 transitions, 1862 flow [2024-06-28 00:16:15,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:15,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:15,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:15,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:16:15,579 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)] === [2024-06-28 00:16:15,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1967958830, now seen corresponding path program 4 times [2024-06-28 00:16:15,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:15,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759652822] [2024-06-28 00:16:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:15,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:24,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:24,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759652822] [2024-06-28 00:16:24,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759652822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:24,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:24,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:24,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382359940] [2024-06-28 00:16:24,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:24,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:24,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:16:24,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 150 transitions, 1862 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:24,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:24,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:16:25,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:25,950 INFO L124 PetriNetUnfolderBase]: 373/692 cut-off events. [2024-06-28 00:16:25,950 INFO L125 PetriNetUnfolderBase]: For 27613/27616 co-relation queries the response was YES. [2024-06-28 00:16:25,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5145 conditions, 692 events. 373/692 cut-off events. For 27613/27616 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3178 event pairs, 57 based on Foata normal form. 10/699 useless extension candidates. Maximal degree in co-relation 5070. Up to 442 conditions per place. [2024-06-28 00:16:25,956 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 86 selfloop transitions, 71 changer transitions 17/176 dead transitions. [2024-06-28 00:16:25,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 176 transitions, 2388 flow [2024-06-28 00:16:25,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:16:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:16:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 00:16:25,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-28 00:16:25,983 INFO L175 Difference]: Start difference. First operand has 171 places, 150 transitions, 1862 flow. Second operand 11 states and 112 transitions. [2024-06-28 00:16:25,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 176 transitions, 2388 flow [2024-06-28 00:16:26,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 176 transitions, 2218 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:16:26,119 INFO L231 Difference]: Finished difference. Result has 170 places, 146 transitions, 1806 flow [2024-06-28 00:16:26,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1806, PETRI_PLACES=170, PETRI_TRANSITIONS=146} [2024-06-28 00:16:26,120 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2024-06-28 00:16:26,120 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 146 transitions, 1806 flow [2024-06-28 00:16:26,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:26,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:26,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:26,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:16:26,121 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)] === [2024-06-28 00:16:26,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1463114626, now seen corresponding path program 5 times [2024-06-28 00:16:26,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:26,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383381771] [2024-06-28 00:16:26,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:26,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:35,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383381771] [2024-06-28 00:16:35,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383381771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:35,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:35,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:16:35,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179674733] [2024-06-28 00:16:35,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:35,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:16:35,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:35,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:16:35,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:16:35,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:16:35,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 146 transitions, 1806 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:16:35,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:35,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:16:35,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:36,726 INFO L124 PetriNetUnfolderBase]: 388/719 cut-off events. [2024-06-28 00:16:36,726 INFO L125 PetriNetUnfolderBase]: For 32251/32253 co-relation queries the response was YES. [2024-06-28 00:16:36,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5529 conditions, 719 events. 388/719 cut-off events. For 32251/32253 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3308 event pairs, 63 based on Foata normal form. 10/728 useless extension candidates. Maximal degree in co-relation 5454. Up to 346 conditions per place. [2024-06-28 00:16:36,732 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 102 selfloop transitions, 61 changer transitions 14/179 dead transitions. [2024-06-28 00:16:36,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 179 transitions, 2470 flow [2024-06-28 00:16:36,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:16:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:16:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:16:36,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-28 00:16:36,734 INFO L175 Difference]: Start difference. First operand has 170 places, 146 transitions, 1806 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:16:36,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 179 transitions, 2470 flow [2024-06-28 00:16:36,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 179 transitions, 2309 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:16:36,804 INFO L231 Difference]: Finished difference. Result has 164 places, 143 transitions, 1753 flow [2024-06-28 00:16:36,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1649, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1753, PETRI_PLACES=164, PETRI_TRANSITIONS=143} [2024-06-28 00:16:36,804 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-28 00:16:36,804 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 143 transitions, 1753 flow [2024-06-28 00:16:36,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:16:36,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:36,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:36,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:16:36,805 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)] === [2024-06-28 00:16:36,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash -2055117304, now seen corresponding path program 6 times [2024-06-28 00:16:36,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:36,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024525711] [2024-06-28 00:16:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:36,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:44,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:44,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024525711] [2024-06-28 00:16:44,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024525711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:44,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:44,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:44,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568131965] [2024-06-28 00:16:44,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:44,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:44,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:44,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:44,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:44,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:16:44,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 143 transitions, 1753 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:44,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:44,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:16:44,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:45,744 INFO L124 PetriNetUnfolderBase]: 401/747 cut-off events. [2024-06-28 00:16:45,744 INFO L125 PetriNetUnfolderBase]: For 38732/38735 co-relation queries the response was YES. [2024-06-28 00:16:45,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5991 conditions, 747 events. 401/747 cut-off events. For 38732/38735 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3529 event pairs, 80 based on Foata normal form. 10/754 useless extension candidates. Maximal degree in co-relation 5917. Up to 464 conditions per place. [2024-06-28 00:16:45,750 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 99 selfloop transitions, 60 changer transitions 8/169 dead transitions. [2024-06-28 00:16:45,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 169 transitions, 2391 flow [2024-06-28 00:16:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 00:16:45,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 00:16:45,752 INFO L175 Difference]: Start difference. First operand has 164 places, 143 transitions, 1753 flow. Second operand 10 states and 106 transitions. [2024-06-28 00:16:45,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 169 transitions, 2391 flow [2024-06-28 00:16:45,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 169 transitions, 2273 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 00:16:45,799 INFO L231 Difference]: Finished difference. Result has 160 places, 141 transitions, 1754 flow [2024-06-28 00:16:45,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1754, PETRI_PLACES=160, PETRI_TRANSITIONS=141} [2024-06-28 00:16:45,799 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2024-06-28 00:16:45,800 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 141 transitions, 1754 flow [2024-06-28 00:16:45,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:45,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:45,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:45,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:16:45,800 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)] === [2024-06-28 00:16:45,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:45,801 INFO L85 PathProgramCache]: Analyzing trace with hash 685072134, now seen corresponding path program 7 times [2024-06-28 00:16:45,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:45,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662874183] [2024-06-28 00:16:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:45,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:52,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:52,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662874183] [2024-06-28 00:16:52,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662874183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:52,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:52,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518950789] [2024-06-28 00:16:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:52,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:52,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:52,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:16:52,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 141 transitions, 1754 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:52,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:52,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:16:52,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:53,641 INFO L124 PetriNetUnfolderBase]: 370/686 cut-off events. [2024-06-28 00:16:53,641 INFO L125 PetriNetUnfolderBase]: For 30511/30514 co-relation queries the response was YES. [2024-06-28 00:16:53,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5355 conditions, 686 events. 370/686 cut-off events. For 30511/30514 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3135 event pairs, 71 based on Foata normal form. 12/695 useless extension candidates. Maximal degree in co-relation 5283. Up to 464 conditions per place. [2024-06-28 00:16:53,646 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 87 selfloop transitions, 55 changer transitions 18/162 dead transitions. [2024-06-28 00:16:53,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 2258 flow [2024-06-28 00:16:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:53,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 00:16:53,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:16:53,648 INFO L175 Difference]: Start difference. First operand has 160 places, 141 transitions, 1754 flow. Second operand 10 states and 100 transitions. [2024-06-28 00:16:53,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 2258 flow [2024-06-28 00:16:53,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 162 transitions, 2132 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:16:53,689 INFO L231 Difference]: Finished difference. Result has 159 places, 135 transitions, 1678 flow [2024-06-28 00:16:53,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1678, PETRI_PLACES=159, PETRI_TRANSITIONS=135} [2024-06-28 00:16:53,690 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 00:16:53,690 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 135 transitions, 1678 flow [2024-06-28 00:16:53,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:53,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:53,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:53,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:16:53,690 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)] === [2024-06-28 00:16:53,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:53,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1551828256, now seen corresponding path program 8 times [2024-06-28 00:16:53,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:53,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381195806] [2024-06-28 00:16:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:53,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:03,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:03,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381195806] [2024-06-28 00:17:03,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381195806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:03,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:03,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:17:03,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521343718] [2024-06-28 00:17:03,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:03,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:17:03,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:03,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:17:03,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:17:03,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:17:03,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 135 transitions, 1678 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:03,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:03,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:17:03,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:03,746 INFO L124 PetriNetUnfolderBase]: 353/657 cut-off events. [2024-06-28 00:17:03,746 INFO L125 PetriNetUnfolderBase]: For 28695/28698 co-relation queries the response was YES. [2024-06-28 00:17:03,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5087 conditions, 657 events. 353/657 cut-off events. For 28695/28698 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2978 event pairs, 75 based on Foata normal form. 12/666 useless extension candidates. Maximal degree in co-relation 5016. Up to 483 conditions per place. [2024-06-28 00:17:03,751 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 96 selfloop transitions, 42 changer transitions 12/152 dead transitions. [2024-06-28 00:17:03,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 152 transitions, 2084 flow [2024-06-28 00:17:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-28 00:17:03,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-28 00:17:03,753 INFO L175 Difference]: Start difference. First operand has 159 places, 135 transitions, 1678 flow. Second operand 10 states and 95 transitions. [2024-06-28 00:17:03,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 152 transitions, 2084 flow [2024-06-28 00:17:03,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 152 transitions, 1954 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:17:03,790 INFO L231 Difference]: Finished difference. Result has 152 places, 131 transitions, 1612 flow [2024-06-28 00:17:03,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1612, PETRI_PLACES=152, PETRI_TRANSITIONS=131} [2024-06-28 00:17:03,791 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-06-28 00:17:03,791 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 131 transitions, 1612 flow [2024-06-28 00:17:03,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:03,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:03,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:03,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:17:03,791 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)] === [2024-06-28 00:17:03,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1551834208, now seen corresponding path program 1 times [2024-06-28 00:17:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:03,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656423746] [2024-06-28 00:17:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656423746] [2024-06-28 00:17:15,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656423746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:15,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:15,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:17:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196252275] [2024-06-28 00:17:15,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:15,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:17:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:17:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:17:15,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:17:15,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 131 transitions, 1612 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:17:15,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:15,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:17:15,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:16,304 INFO L124 PetriNetUnfolderBase]: 327/610 cut-off events. [2024-06-28 00:17:16,305 INFO L125 PetriNetUnfolderBase]: For 20616/20618 co-relation queries the response was YES. [2024-06-28 00:17:16,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4705 conditions, 610 events. 327/610 cut-off events. For 20616/20618 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2708 event pairs, 60 based on Foata normal form. 4/613 useless extension candidates. Maximal degree in co-relation 4637. Up to 509 conditions per place. [2024-06-28 00:17:16,309 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 110 selfloop transitions, 38 changer transitions 0/150 dead transitions. [2024-06-28 00:17:16,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 150 transitions, 1984 flow [2024-06-28 00:17:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:17:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:17:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 00:17:16,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-28 00:17:16,311 INFO L175 Difference]: Start difference. First operand has 152 places, 131 transitions, 1612 flow. Second operand 11 states and 100 transitions. [2024-06-28 00:17:16,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 150 transitions, 1984 flow [2024-06-28 00:17:16,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 150 transitions, 1892 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:17:16,341 INFO L231 Difference]: Finished difference. Result has 151 places, 132 transitions, 1624 flow [2024-06-28 00:17:16,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1624, PETRI_PLACES=151, PETRI_TRANSITIONS=132} [2024-06-28 00:17:16,342 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-28 00:17:16,342 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 132 transitions, 1624 flow [2024-06-28 00:17:16,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:17:16,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:16,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:16,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:17:16,343 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)] === [2024-06-28 00:17:16,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:16,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1968421774, now seen corresponding path program 9 times [2024-06-28 00:17:16,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:16,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120244609] [2024-06-28 00:17:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:16,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:27,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:27,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120244609] [2024-06-28 00:17:27,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120244609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:27,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:27,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:17:27,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317891043] [2024-06-28 00:17:27,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:27,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:17:27,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:27,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:17:27,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:17:27,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:17:27,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 132 transitions, 1624 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:17:27,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:27,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:17:27,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:28,409 INFO L124 PetriNetUnfolderBase]: 343/646 cut-off events. [2024-06-28 00:17:28,410 INFO L125 PetriNetUnfolderBase]: For 22151/22153 co-relation queries the response was YES. [2024-06-28 00:17:28,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4780 conditions, 646 events. 343/646 cut-off events. For 22151/22153 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2954 event pairs, 66 based on Foata normal form. 12/657 useless extension candidates. Maximal degree in co-relation 4713. Up to 477 conditions per place. [2024-06-28 00:17:28,414 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 98 selfloop transitions, 42 changer transitions 11/153 dead transitions. [2024-06-28 00:17:28,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 153 transitions, 2036 flow [2024-06-28 00:17:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:17:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:17:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 00:17:28,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-28 00:17:28,416 INFO L175 Difference]: Start difference. First operand has 151 places, 132 transitions, 1624 flow. Second operand 11 states and 106 transitions. [2024-06-28 00:17:28,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 153 transitions, 2036 flow [2024-06-28 00:17:28,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 1942 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 00:17:28,451 INFO L231 Difference]: Finished difference. Result has 153 places, 129 transitions, 1603 flow [2024-06-28 00:17:28,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1603, PETRI_PLACES=153, PETRI_TRANSITIONS=129} [2024-06-28 00:17:28,452 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-06-28 00:17:28,452 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 129 transitions, 1603 flow [2024-06-28 00:17:28,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:17:28,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:28,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:28,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:17:28,453 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)] === [2024-06-28 00:17:28,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:28,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1968425494, now seen corresponding path program 10 times [2024-06-28 00:17:28,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:28,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120669581] [2024-06-28 00:17:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:28,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:36,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:36,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120669581] [2024-06-28 00:17:36,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120669581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:36,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:36,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:17:36,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017974713] [2024-06-28 00:17:36,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:36,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:17:36,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:36,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:17:36,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:17:36,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:17:36,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 129 transitions, 1603 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:36,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:36,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:17:36,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:36,945 INFO L124 PetriNetUnfolderBase]: 331/627 cut-off events. [2024-06-28 00:17:36,945 INFO L125 PetriNetUnfolderBase]: For 23142/23145 co-relation queries the response was YES. [2024-06-28 00:17:36,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4712 conditions, 627 events. 331/627 cut-off events. For 23142/23145 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2839 event pairs, 60 based on Foata normal form. 10/634 useless extension candidates. Maximal degree in co-relation 4644. Up to 464 conditions per place. [2024-06-28 00:17:36,950 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 93 selfloop transitions, 38 changer transitions 12/145 dead transitions. [2024-06-28 00:17:36,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 145 transitions, 1967 flow [2024-06-28 00:17:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-28 00:17:36,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31 [2024-06-28 00:17:36,951 INFO L175 Difference]: Start difference. First operand has 153 places, 129 transitions, 1603 flow. Second operand 10 states and 93 transitions. [2024-06-28 00:17:36,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 145 transitions, 1967 flow [2024-06-28 00:17:37,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 145 transitions, 1873 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:17:37,028 INFO L231 Difference]: Finished difference. Result has 150 places, 125 transitions, 1563 flow [2024-06-28 00:17:37,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1563, PETRI_PLACES=150, PETRI_TRANSITIONS=125} [2024-06-28 00:17:37,029 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-06-28 00:17:37,029 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 125 transitions, 1563 flow [2024-06-28 00:17:37,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:37,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:37,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:37,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:17:37,030 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)] === [2024-06-28 00:17:37,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash 455170478, now seen corresponding path program 2 times [2024-06-28 00:17:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:37,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607793228] [2024-06-28 00:17:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:37,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:47,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:47,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607793228] [2024-06-28 00:17:47,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607793228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:47,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:47,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:17:47,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918084480] [2024-06-28 00:17:47,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:47,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:17:47,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:17:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:17:47,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:17:47,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 125 transitions, 1563 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:17:47,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:47,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:17:47,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:48,355 INFO L124 PetriNetUnfolderBase]: 314/591 cut-off events. [2024-06-28 00:17:48,355 INFO L125 PetriNetUnfolderBase]: For 19442/19444 co-relation queries the response was YES. [2024-06-28 00:17:48,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 591 events. 314/591 cut-off events. For 19442/19444 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2612 event pairs, 55 based on Foata normal form. 4/594 useless extension candidates. Maximal degree in co-relation 4440. Up to 475 conditions per place. [2024-06-28 00:17:48,359 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 100 selfloop transitions, 39 changer transitions 0/141 dead transitions. [2024-06-28 00:17:48,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 141 transitions, 1911 flow [2024-06-28 00:17:48,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2024-06-28 00:17:48,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30333333333333334 [2024-06-28 00:17:48,361 INFO L175 Difference]: Start difference. First operand has 150 places, 125 transitions, 1563 flow. Second operand 10 states and 91 transitions. [2024-06-28 00:17:48,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 141 transitions, 1911 flow [2024-06-28 00:17:48,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 141 transitions, 1831 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:48,390 INFO L231 Difference]: Finished difference. Result has 147 places, 126 transitions, 1593 flow [2024-06-28 00:17:48,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1593, PETRI_PLACES=147, PETRI_TRANSITIONS=126} [2024-06-28 00:17:48,391 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-06-28 00:17:48,391 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 126 transitions, 1593 flow [2024-06-28 00:17:48,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:17:48,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:48,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:48,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:17:48,391 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)] === [2024-06-28 00:17:48,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1859866938, now seen corresponding path program 3 times [2024-06-28 00:17:48,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:48,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781183567] [2024-06-28 00:17:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:48,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:53,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:53,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781183567] [2024-06-28 00:17:53,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781183567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:53,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:53,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:17:53,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719053991] [2024-06-28 00:17:53,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:53,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:17:53,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:17:53,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:17:53,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:17:53,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 126 transitions, 1593 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:53,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:53,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:17:53,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:54,752 INFO L124 PetriNetUnfolderBase]: 318/600 cut-off events. [2024-06-28 00:17:54,752 INFO L125 PetriNetUnfolderBase]: For 18461/18464 co-relation queries the response was YES. [2024-06-28 00:17:54,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4546 conditions, 600 events. 318/600 cut-off events. For 18461/18464 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2654 event pairs, 68 based on Foata normal form. 4/601 useless extension candidates. Maximal degree in co-relation 4480. Up to 517 conditions per place. [2024-06-28 00:17:54,757 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 105 selfloop transitions, 30 changer transitions 0/137 dead transitions. [2024-06-28 00:17:54,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 137 transitions, 1906 flow [2024-06-28 00:17:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-06-28 00:17:54,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-28 00:17:54,759 INFO L175 Difference]: Start difference. First operand has 147 places, 126 transitions, 1593 flow. Second operand 9 states and 81 transitions. [2024-06-28 00:17:54,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 137 transitions, 1906 flow [2024-06-28 00:17:54,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 137 transitions, 1808 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:54,789 INFO L231 Difference]: Finished difference. Result has 148 places, 127 transitions, 1582 flow [2024-06-28 00:17:54,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=148, PETRI_TRANSITIONS=127} [2024-06-28 00:17:54,790 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2024-06-28 00:17:54,790 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 127 transitions, 1582 flow [2024-06-28 00:17:54,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:54,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:54,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:54,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:17:54,791 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)] === [2024-06-28 00:17:54,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:54,793 INFO L85 PathProgramCache]: Analyzing trace with hash -260408168, now seen corresponding path program 4 times [2024-06-28 00:17:54,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:54,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487932063] [2024-06-28 00:17:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:54,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:01,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:01,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487932063] [2024-06-28 00:18:01,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487932063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:01,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:01,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:18:01,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086575720] [2024-06-28 00:18:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:01,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:18:01,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:18:01,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:18:01,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:18:01,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 127 transitions, 1582 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:18:01,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:01,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:18:01,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:02,385 INFO L124 PetriNetUnfolderBase]: 334/627 cut-off events. [2024-06-28 00:18:02,385 INFO L125 PetriNetUnfolderBase]: For 18601/18603 co-relation queries the response was YES. [2024-06-28 00:18:02,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4702 conditions, 627 events. 334/627 cut-off events. For 18601/18603 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2840 event pairs, 59 based on Foata normal form. 4/630 useless extension candidates. Maximal degree in co-relation 4635. Up to 482 conditions per place. [2024-06-28 00:18:02,390 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 95 selfloop transitions, 59 changer transitions 0/156 dead transitions. [2024-06-28 00:18:02,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 156 transitions, 2127 flow [2024-06-28 00:18:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:18:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:18:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 00:18:02,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-28 00:18:02,392 INFO L175 Difference]: Start difference. First operand has 148 places, 127 transitions, 1582 flow. Second operand 12 states and 114 transitions. [2024-06-28 00:18:02,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 156 transitions, 2127 flow [2024-06-28 00:18:02,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 156 transitions, 2049 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:02,465 INFO L231 Difference]: Finished difference. Result has 155 places, 136 transitions, 1814 flow [2024-06-28 00:18:02,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1814, PETRI_PLACES=155, PETRI_TRANSITIONS=136} [2024-06-28 00:18:02,465 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-28 00:18:02,465 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 136 transitions, 1814 flow [2024-06-28 00:18:02,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:18:02,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:02,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:02,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:18:02,466 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)] === [2024-06-28 00:18:02,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1452314732, now seen corresponding path program 11 times [2024-06-28 00:18:02,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:02,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476243049] [2024-06-28 00:18:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:02,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:09,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:09,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476243049] [2024-06-28 00:18:09,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476243049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:09,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:09,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:18:09,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096377247] [2024-06-28 00:18:09,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:09,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:18:09,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:18:09,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:18:09,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:18:09,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 136 transitions, 1814 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:18:09,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:09,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:18:09,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:10,699 INFO L124 PetriNetUnfolderBase]: 387/724 cut-off events. [2024-06-28 00:18:10,699 INFO L125 PetriNetUnfolderBase]: For 24437/24439 co-relation queries the response was YES. [2024-06-28 00:18:10,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5547 conditions, 724 events. 387/724 cut-off events. For 24437/24439 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3419 event pairs, 73 based on Foata normal form. 12/735 useless extension candidates. Maximal degree in co-relation 5477. Up to 608 conditions per place. [2024-06-28 00:18:10,704 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 136 selfloop transitions, 30 changer transitions 11/179 dead transitions. [2024-06-28 00:18:10,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 179 transitions, 2604 flow [2024-06-28 00:18:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:18:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:18:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 00:18:10,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-28 00:18:10,706 INFO L175 Difference]: Start difference. First operand has 155 places, 136 transitions, 1814 flow. Second operand 12 states and 114 transitions. [2024-06-28 00:18:10,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 179 transitions, 2604 flow [2024-06-28 00:18:10,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 179 transitions, 2485 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:10,743 INFO L231 Difference]: Finished difference. Result has 162 places, 148 transitions, 2012 flow [2024-06-28 00:18:10,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2012, PETRI_PLACES=162, PETRI_TRANSITIONS=148} [2024-06-28 00:18:10,745 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-06-28 00:18:10,745 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 148 transitions, 2012 flow [2024-06-28 00:18:10,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:18:10,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:10,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:10,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:18:10,746 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)] === [2024-06-28 00:18:10,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash 508937046, now seen corresponding path program 12 times [2024-06-28 00:18:10,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:10,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687967071] [2024-06-28 00:18:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:10,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:16,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:16,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687967071] [2024-06-28 00:18:16,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687967071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:16,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:16,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:16,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028966722] [2024-06-28 00:18:16,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:16,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:16,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:16,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:16,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:18:16,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 148 transitions, 2012 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:16,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:16,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:18:16,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:16,987 INFO L124 PetriNetUnfolderBase]: 378/706 cut-off events. [2024-06-28 00:18:16,987 INFO L125 PetriNetUnfolderBase]: For 23417/23420 co-relation queries the response was YES. [2024-06-28 00:18:16,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5534 conditions, 706 events. 378/706 cut-off events. For 23417/23420 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3305 event pairs, 70 based on Foata normal form. 4/707 useless extension candidates. Maximal degree in co-relation 5461. Up to 590 conditions per place. [2024-06-28 00:18:16,992 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 128 selfloop transitions, 37 changer transitions 0/167 dead transitions. [2024-06-28 00:18:16,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 167 transitions, 2521 flow [2024-06-28 00:18:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:18:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:18:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 00:18:16,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 00:18:16,994 INFO L175 Difference]: Start difference. First operand has 162 places, 148 transitions, 2012 flow. Second operand 8 states and 81 transitions. [2024-06-28 00:18:16,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 167 transitions, 2521 flow [2024-06-28 00:18:17,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 167 transitions, 2468 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:18:17,029 INFO L231 Difference]: Finished difference. Result has 161 places, 155 transitions, 2166 flow [2024-06-28 00:18:17,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2166, PETRI_PLACES=161, PETRI_TRANSITIONS=155} [2024-06-28 00:18:17,030 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 132 predicate places. [2024-06-28 00:18:17,030 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 155 transitions, 2166 flow [2024-06-28 00:18:17,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:17,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:17,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:17,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:18:17,031 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)] === [2024-06-28 00:18:17,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash -260206575, now seen corresponding path program 1 times [2024-06-28 00:18:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:17,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086618861] [2024-06-28 00:18:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:22,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:22,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086618861] [2024-06-28 00:18:22,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086618861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:22,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:22,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833607020] [2024-06-28 00:18:22,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:22,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:22,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:22,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:22,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:18:22,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 155 transitions, 2166 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:22,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:22,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:18:22,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:23,167 INFO L124 PetriNetUnfolderBase]: 376/703 cut-off events. [2024-06-28 00:18:23,168 INFO L125 PetriNetUnfolderBase]: For 22895/22898 co-relation queries the response was YES. [2024-06-28 00:18:23,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5583 conditions, 703 events. 376/703 cut-off events. For 22895/22898 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3296 event pairs, 75 based on Foata normal form. 3/703 useless extension candidates. Maximal degree in co-relation 5510. Up to 627 conditions per place. [2024-06-28 00:18:23,173 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 125 selfloop transitions, 36 changer transitions 0/163 dead transitions. [2024-06-28 00:18:23,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 163 transitions, 2506 flow [2024-06-28 00:18:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:18:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:18:23,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 77 transitions. [2024-06-28 00:18:23,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32083333333333336 [2024-06-28 00:18:23,175 INFO L175 Difference]: Start difference. First operand has 161 places, 155 transitions, 2166 flow. Second operand 8 states and 77 transitions. [2024-06-28 00:18:23,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 163 transitions, 2506 flow [2024-06-28 00:18:23,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 163 transitions, 2442 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 00:18:23,236 INFO L231 Difference]: Finished difference. Result has 166 places, 155 transitions, 2185 flow [2024-06-28 00:18:23,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2185, PETRI_PLACES=166, PETRI_TRANSITIONS=155} [2024-06-28 00:18:23,237 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 137 predicate places. [2024-06-28 00:18:23,237 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 155 transitions, 2185 flow [2024-06-28 00:18:23,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:23,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:23,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:23,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:18:23,238 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)] === [2024-06-28 00:18:23,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:23,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1244758801, now seen corresponding path program 2 times [2024-06-28 00:18:23,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:23,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905857059] [2024-06-28 00:18:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:23,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:30,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905857059] [2024-06-28 00:18:30,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905857059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:30,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:30,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:30,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873503249] [2024-06-28 00:18:30,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:30,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:30,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:30,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:30,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:30,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:18:30,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 155 transitions, 2185 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:30,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:30,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:18:30,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:31,439 INFO L124 PetriNetUnfolderBase]: 381/712 cut-off events. [2024-06-28 00:18:31,439 INFO L125 PetriNetUnfolderBase]: For 24781/24784 co-relation queries the response was YES. [2024-06-28 00:18:31,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5664 conditions, 712 events. 381/712 cut-off events. For 24781/24784 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3356 event pairs, 73 based on Foata normal form. 7/716 useless extension candidates. Maximal degree in co-relation 5588. Up to 588 conditions per place. [2024-06-28 00:18:31,445 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 106 selfloop transitions, 62 changer transitions 0/170 dead transitions. [2024-06-28 00:18:31,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 2691 flow [2024-06-28 00:18:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-06-28 00:18:31,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3074074074074074 [2024-06-28 00:18:31,446 INFO L175 Difference]: Start difference. First operand has 166 places, 155 transitions, 2185 flow. Second operand 9 states and 83 transitions. [2024-06-28 00:18:31,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 2691 flow [2024-06-28 00:18:31,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 170 transitions, 2510 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:31,487 INFO L231 Difference]: Finished difference. Result has 167 places, 161 transitions, 2305 flow [2024-06-28 00:18:31,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2305, PETRI_PLACES=167, PETRI_TRANSITIONS=161} [2024-06-28 00:18:31,488 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-28 00:18:31,488 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 161 transitions, 2305 flow [2024-06-28 00:18:31,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:31,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:31,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:31,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:18:31,488 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)] === [2024-06-28 00:18:31,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:31,489 INFO L85 PathProgramCache]: Analyzing trace with hash -265776500, now seen corresponding path program 13 times [2024-06-28 00:18:31,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:31,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408951964] [2024-06-28 00:18:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:31,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:37,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:37,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408951964] [2024-06-28 00:18:37,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408951964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:37,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:37,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318036622] [2024-06-28 00:18:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:37,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:37,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:37,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:37,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:37,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:18:37,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 161 transitions, 2305 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:37,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:37,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:18:37,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:38,348 INFO L124 PetriNetUnfolderBase]: 385/720 cut-off events. [2024-06-28 00:18:38,349 INFO L125 PetriNetUnfolderBase]: For 25042/25045 co-relation queries the response was YES. [2024-06-28 00:18:38,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5743 conditions, 720 events. 385/720 cut-off events. For 25042/25045 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3394 event pairs, 73 based on Foata normal form. 4/721 useless extension candidates. Maximal degree in co-relation 5668. Up to 629 conditions per place. [2024-06-28 00:18:38,356 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 134 selfloop transitions, 37 changer transitions 0/173 dead transitions. [2024-06-28 00:18:38,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 173 transitions, 2683 flow [2024-06-28 00:18:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:18:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:18:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 00:18:38,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:18:38,358 INFO L175 Difference]: Start difference. First operand has 167 places, 161 transitions, 2305 flow. Second operand 8 states and 80 transitions. [2024-06-28 00:18:38,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 173 transitions, 2683 flow [2024-06-28 00:18:38,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 173 transitions, 2503 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:38,418 INFO L231 Difference]: Finished difference. Result has 168 places, 163 transitions, 2227 flow [2024-06-28 00:18:38,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2227, PETRI_PLACES=168, PETRI_TRANSITIONS=163} [2024-06-28 00:18:38,418 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-28 00:18:38,418 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 163 transitions, 2227 flow [2024-06-28 00:18:38,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:38,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:38,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:38,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:18:38,419 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)] === [2024-06-28 00:18:38,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash -265770548, now seen corresponding path program 5 times [2024-06-28 00:18:38,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:38,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105636730] [2024-06-28 00:18:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:45,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:45,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105636730] [2024-06-28 00:18:45,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105636730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:45,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:45,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:45,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261888875] [2024-06-28 00:18:45,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:45,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:45,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:45,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:45,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:45,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:18:45,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 163 transitions, 2227 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:45,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:45,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:18:45,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:45,865 INFO L124 PetriNetUnfolderBase]: 389/728 cut-off events. [2024-06-28 00:18:45,865 INFO L125 PetriNetUnfolderBase]: For 23502/23505 co-relation queries the response was YES. [2024-06-28 00:18:45,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5681 conditions, 728 events. 389/728 cut-off events. For 23502/23505 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3446 event pairs, 70 based on Foata normal form. 4/729 useless extension candidates. Maximal degree in co-relation 5606. Up to 646 conditions per place. [2024-06-28 00:18:45,871 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 136 selfloop transitions, 35 changer transitions 0/173 dead transitions. [2024-06-28 00:18:45,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 173 transitions, 2615 flow [2024-06-28 00:18:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:18:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:18:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-28 00:18:45,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32916666666666666 [2024-06-28 00:18:45,873 INFO L175 Difference]: Start difference. First operand has 168 places, 163 transitions, 2227 flow. Second operand 8 states and 79 transitions. [2024-06-28 00:18:45,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 173 transitions, 2615 flow [2024-06-28 00:18:45,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 173 transitions, 2562 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:18:45,920 INFO L231 Difference]: Finished difference. Result has 173 places, 164 transitions, 2277 flow [2024-06-28 00:18:45,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2277, PETRI_PLACES=173, PETRI_TRANSITIONS=164} [2024-06-28 00:18:45,921 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-28 00:18:45,921 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 164 transitions, 2277 flow [2024-06-28 00:18:45,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:45,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:45,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:45,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:18:45,921 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)] === [2024-06-28 00:18:45,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash -265770765, now seen corresponding path program 3 times [2024-06-28 00:18:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:45,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685387402] [2024-06-28 00:18:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:45,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:52,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:52,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685387402] [2024-06-28 00:18:52,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685387402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:52,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:52,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778124735] [2024-06-28 00:18:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:52,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:52,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:52,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:18:52,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 164 transitions, 2277 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:52,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:52,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:18:52,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:53,329 INFO L124 PetriNetUnfolderBase]: 396/743 cut-off events. [2024-06-28 00:18:53,329 INFO L125 PetriNetUnfolderBase]: For 25419/25422 co-relation queries the response was YES. [2024-06-28 00:18:53,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5795 conditions, 743 events. 396/743 cut-off events. For 25419/25422 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3564 event pairs, 53 based on Foata normal form. 4/744 useless extension candidates. Maximal degree in co-relation 5718. Up to 563 conditions per place. [2024-06-28 00:18:53,335 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 101 selfloop transitions, 73 changer transitions 0/176 dead transitions. [2024-06-28 00:18:53,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 176 transitions, 2743 flow [2024-06-28 00:18:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:18:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:18:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 00:18:53,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-28 00:18:53,338 INFO L175 Difference]: Start difference. First operand has 173 places, 164 transitions, 2277 flow. Second operand 7 states and 78 transitions. [2024-06-28 00:18:53,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 176 transitions, 2743 flow [2024-06-28 00:18:53,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 176 transitions, 2640 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:18:53,385 INFO L231 Difference]: Finished difference. Result has 175 places, 166 transitions, 2423 flow [2024-06-28 00:18:53,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2423, PETRI_PLACES=175, PETRI_TRANSITIONS=166} [2024-06-28 00:18:53,386 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-28 00:18:53,386 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 166 transitions, 2423 flow [2024-06-28 00:18:53,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:53,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:53,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:53,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:18:53,387 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)] === [2024-06-28 00:18:53,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash -260414120, now seen corresponding path program 14 times [2024-06-28 00:18:53,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:53,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082442264] [2024-06-28 00:18:53,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:53,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:00,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:00,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082442264] [2024-06-28 00:19:00,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082442264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:00,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:00,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:00,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110351926] [2024-06-28 00:19:00,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:00,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:00,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:00,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:00,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:19:00,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 166 transitions, 2423 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:00,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:00,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:19:00,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:01,086 INFO L124 PetriNetUnfolderBase]: 412/779 cut-off events. [2024-06-28 00:19:01,090 INFO L125 PetriNetUnfolderBase]: For 31076/31079 co-relation queries the response was YES. [2024-06-28 00:19:01,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6120 conditions, 779 events. 412/779 cut-off events. For 31076/31079 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3824 event pairs, 75 based on Foata normal form. 12/788 useless extension candidates. Maximal degree in co-relation 6042. Up to 649 conditions per place. [2024-06-28 00:19:01,096 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 132 selfloop transitions, 24 changer transitions 22/180 dead transitions. [2024-06-28 00:19:01,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 180 transitions, 2840 flow [2024-06-28 00:19:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 92 transitions. [2024-06-28 00:19:01,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30666666666666664 [2024-06-28 00:19:01,111 INFO L175 Difference]: Start difference. First operand has 175 places, 166 transitions, 2423 flow. Second operand 10 states and 92 transitions. [2024-06-28 00:19:01,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 180 transitions, 2840 flow [2024-06-28 00:19:01,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 180 transitions, 2760 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 00:19:01,161 INFO L231 Difference]: Finished difference. Result has 181 places, 151 transitions, 2135 flow [2024-06-28 00:19:01,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2135, PETRI_PLACES=181, PETRI_TRANSITIONS=151} [2024-06-28 00:19:01,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2024-06-28 00:19:01,162 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 151 transitions, 2135 flow [2024-06-28 00:19:01,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:01,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:01,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:01,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:19:01,162 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)] === [2024-06-28 00:19:01,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1451138162, now seen corresponding path program 6 times [2024-06-28 00:19:01,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:01,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010254093] [2024-06-28 00:19:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:01,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:08,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:08,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010254093] [2024-06-28 00:19:08,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010254093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:08,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:08,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:19:08,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460775268] [2024-06-28 00:19:08,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:08,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:19:08,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:19:08,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:19:08,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:19:08,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 151 transitions, 2135 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:19:08,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:08,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:19:08,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:08,953 INFO L124 PetriNetUnfolderBase]: 371/707 cut-off events. [2024-06-28 00:19:08,954 INFO L125 PetriNetUnfolderBase]: For 28107/28110 co-relation queries the response was YES. [2024-06-28 00:19:08,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 707 events. 371/707 cut-off events. For 28107/28110 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3385 event pairs, 51 based on Foata normal form. 6/711 useless extension candidates. Maximal degree in co-relation 5533. Up to 560 conditions per place. [2024-06-28 00:19:08,960 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 108 selfloop transitions, 59 changer transitions 0/169 dead transitions. [2024-06-28 00:19:08,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 169 transitions, 2605 flow [2024-06-28 00:19:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:19:08,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:19:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 116 transitions. [2024-06-28 00:19:08,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29743589743589743 [2024-06-28 00:19:08,961 INFO L175 Difference]: Start difference. First operand has 181 places, 151 transitions, 2135 flow. Second operand 13 states and 116 transitions. [2024-06-28 00:19:08,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 169 transitions, 2605 flow [2024-06-28 00:19:09,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 169 transitions, 2472 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:19:09,011 INFO L231 Difference]: Finished difference. Result has 181 places, 152 transitions, 2160 flow [2024-06-28 00:19:09,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2160, PETRI_PLACES=181, PETRI_TRANSITIONS=152} [2024-06-28 00:19:09,012 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2024-06-28 00:19:09,012 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 152 transitions, 2160 flow [2024-06-28 00:19:09,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:19:09,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:09,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:09,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:19:09,013 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)] === [2024-06-28 00:19:09,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:09,013 INFO L85 PathProgramCache]: Analyzing trace with hash -741624112, now seen corresponding path program 15 times [2024-06-28 00:19:09,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:09,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136624177] [2024-06-28 00:19:09,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:09,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:15,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:15,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136624177] [2024-06-28 00:19:15,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136624177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:15,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:15,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:15,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462267320] [2024-06-28 00:19:15,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:15,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:15,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:15,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:15,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:19:15,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 152 transitions, 2160 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:15,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:15,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:19:15,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:16,135 INFO L124 PetriNetUnfolderBase]: 368/702 cut-off events. [2024-06-28 00:19:16,135 INFO L125 PetriNetUnfolderBase]: For 25945/25947 co-relation queries the response was YES. [2024-06-28 00:19:16,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5536 conditions, 702 events. 368/702 cut-off events. For 25945/25947 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3353 event pairs, 63 based on Foata normal form. 4/705 useless extension candidates. Maximal degree in co-relation 5457. Up to 626 conditions per place. [2024-06-28 00:19:16,141 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 132 selfloop transitions, 32 changer transitions 0/166 dead transitions. [2024-06-28 00:19:16,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 166 transitions, 2520 flow [2024-06-28 00:19:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-28 00:19:16,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-28 00:19:16,161 INFO L175 Difference]: Start difference. First operand has 181 places, 152 transitions, 2160 flow. Second operand 9 states and 88 transitions. [2024-06-28 00:19:16,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 166 transitions, 2520 flow [2024-06-28 00:19:16,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 166 transitions, 2364 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 00:19:16,214 INFO L231 Difference]: Finished difference. Result has 180 places, 152 transitions, 2072 flow [2024-06-28 00:19:16,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2072, PETRI_PLACES=180, PETRI_TRANSITIONS=152} [2024-06-28 00:19:16,214 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2024-06-28 00:19:16,215 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 152 transitions, 2072 flow [2024-06-28 00:19:16,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:16,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:16,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:16,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:19:16,215 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)] === [2024-06-28 00:19:16,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash 150059194, now seen corresponding path program 7 times [2024-06-28 00:19:16,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:16,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033184707] [2024-06-28 00:19:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:22,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033184707] [2024-06-28 00:19:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033184707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:22,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:22,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:22,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203458389] [2024-06-28 00:19:22,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:22,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:22,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:19:22,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 152 transitions, 2072 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:22,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:22,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:19:22,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:23,249 INFO L124 PetriNetUnfolderBase]: 372/711 cut-off events. [2024-06-28 00:19:23,249 INFO L125 PetriNetUnfolderBase]: For 26622/26625 co-relation queries the response was YES. [2024-06-28 00:19:23,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5507 conditions, 711 events. 372/711 cut-off events. For 26622/26625 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3425 event pairs, 62 based on Foata normal form. 4/712 useless extension candidates. Maximal degree in co-relation 5428. Up to 603 conditions per place. [2024-06-28 00:19:23,256 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 128 selfloop transitions, 35 changer transitions 0/165 dead transitions. [2024-06-28 00:19:23,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 165 transitions, 2453 flow [2024-06-28 00:19:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 87 transitions. [2024-06-28 00:19:23,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29 [2024-06-28 00:19:23,258 INFO L175 Difference]: Start difference. First operand has 180 places, 152 transitions, 2072 flow. Second operand 10 states and 87 transitions. [2024-06-28 00:19:23,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 165 transitions, 2453 flow [2024-06-28 00:19:23,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 165 transitions, 2384 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:19:23,339 INFO L231 Difference]: Finished difference. Result has 183 places, 153 transitions, 2108 flow [2024-06-28 00:19:23,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2108, PETRI_PLACES=183, PETRI_TRANSITIONS=153} [2024-06-28 00:19:23,339 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 154 predicate places. [2024-06-28 00:19:23,340 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 153 transitions, 2108 flow [2024-06-28 00:19:23,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:23,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:23,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:23,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:19:23,340 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)] === [2024-06-28 00:19:23,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:23,341 INFO L85 PathProgramCache]: Analyzing trace with hash 140854767, now seen corresponding path program 4 times [2024-06-28 00:19:23,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:23,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002794913] [2024-06-28 00:19:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:31,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:31,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002794913] [2024-06-28 00:19:31,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002794913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:31,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:31,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:31,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764877806] [2024-06-28 00:19:31,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:31,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:31,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:31,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:31,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:31,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:19:31,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 153 transitions, 2108 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:31,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:31,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:19:31,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:32,113 INFO L124 PetriNetUnfolderBase]: 375/716 cut-off events. [2024-06-28 00:19:32,113 INFO L125 PetriNetUnfolderBase]: For 27393/27396 co-relation queries the response was YES. [2024-06-28 00:19:32,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5583 conditions, 716 events. 375/716 cut-off events. For 27393/27396 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3460 event pairs, 68 based on Foata normal form. 3/716 useless extension candidates. Maximal degree in co-relation 5504. Up to 634 conditions per place. [2024-06-28 00:19:32,119 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 127 selfloop transitions, 37 changer transitions 0/166 dead transitions. [2024-06-28 00:19:32,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 166 transitions, 2505 flow [2024-06-28 00:19:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:19:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:19:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 00:19:32,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 00:19:32,129 INFO L175 Difference]: Start difference. First operand has 183 places, 153 transitions, 2108 flow. Second operand 8 states and 81 transitions. [2024-06-28 00:19:32,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 166 transitions, 2505 flow [2024-06-28 00:19:32,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 166 transitions, 2419 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:19:32,189 INFO L231 Difference]: Finished difference. Result has 183 places, 157 transitions, 2161 flow [2024-06-28 00:19:32,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2161, PETRI_PLACES=183, PETRI_TRANSITIONS=157} [2024-06-28 00:19:32,191 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 154 predicate places. [2024-06-28 00:19:32,191 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 157 transitions, 2161 flow [2024-06-28 00:19:32,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:32,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:32,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:32,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:19:32,192 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)] === [2024-06-28 00:19:32,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:32,192 INFO L85 PathProgramCache]: Analyzing trace with hash 140854984, now seen corresponding path program 8 times [2024-06-28 00:19:32,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:32,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001079137] [2024-06-28 00:19:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:32,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:38,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001079137] [2024-06-28 00:19:38,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001079137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:38,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:38,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:38,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122356312] [2024-06-28 00:19:38,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:38,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:38,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:38,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:38,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:38,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:19:38,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 157 transitions, 2161 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:38,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:38,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:19:38,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:39,187 INFO L124 PetriNetUnfolderBase]: 379/724 cut-off events. [2024-06-28 00:19:39,187 INFO L125 PetriNetUnfolderBase]: For 29620/29623 co-relation queries the response was YES. [2024-06-28 00:19:39,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5735 conditions, 724 events. 379/724 cut-off events. For 29620/29623 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3512 event pairs, 68 based on Foata normal form. 4/725 useless extension candidates. Maximal degree in co-relation 5656. Up to 637 conditions per place. [2024-06-28 00:19:39,195 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 128 selfloop transitions, 38 changer transitions 0/168 dead transitions. [2024-06-28 00:19:39,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 168 transitions, 2547 flow [2024-06-28 00:19:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-06-28 00:19:39,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-28 00:19:39,197 INFO L175 Difference]: Start difference. First operand has 183 places, 157 transitions, 2161 flow. Second operand 10 states and 90 transitions. [2024-06-28 00:19:39,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 168 transitions, 2547 flow [2024-06-28 00:19:39,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 168 transitions, 2444 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 00:19:39,289 INFO L231 Difference]: Finished difference. Result has 187 places, 158 transitions, 2173 flow [2024-06-28 00:19:39,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2173, PETRI_PLACES=187, PETRI_TRANSITIONS=158} [2024-06-28 00:19:39,289 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 158 predicate places. [2024-06-28 00:19:39,289 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 158 transitions, 2173 flow [2024-06-28 00:19:39,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:39,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:39,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:39,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:19:39,290 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)] === [2024-06-28 00:19:39,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash 346771140, now seen corresponding path program 9 times [2024-06-28 00:19:39,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:39,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563417333] [2024-06-28 00:19:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:46,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:46,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563417333] [2024-06-28 00:19:46,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563417333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:46,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:46,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503622964] [2024-06-28 00:19:46,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:46,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:46,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:46,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:46,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:19:46,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 158 transitions, 2173 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:46,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:46,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:19:46,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:47,246 INFO L124 PetriNetUnfolderBase]: 380/727 cut-off events. [2024-06-28 00:19:47,247 INFO L125 PetriNetUnfolderBase]: For 31555/31558 co-relation queries the response was YES. [2024-06-28 00:19:47,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5739 conditions, 727 events. 380/727 cut-off events. For 31555/31558 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3527 event pairs, 69 based on Foata normal form. 6/730 useless extension candidates. Maximal degree in co-relation 5658. Up to 662 conditions per place. [2024-06-28 00:19:47,252 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 139 selfloop transitions, 28 changer transitions 0/169 dead transitions. [2024-06-28 00:19:47,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 169 transitions, 2563 flow [2024-06-28 00:19:47,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 88 transitions. [2024-06-28 00:19:47,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29333333333333333 [2024-06-28 00:19:47,254 INFO L175 Difference]: Start difference. First operand has 187 places, 158 transitions, 2173 flow. Second operand 10 states and 88 transitions. [2024-06-28 00:19:47,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 169 transitions, 2563 flow [2024-06-28 00:19:47,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 169 transitions, 2454 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:19:47,316 INFO L231 Difference]: Finished difference. Result has 189 places, 159 transitions, 2162 flow [2024-06-28 00:19:47,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2162, PETRI_PLACES=189, PETRI_TRANSITIONS=159} [2024-06-28 00:19:47,317 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-28 00:19:47,317 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 159 transitions, 2162 flow [2024-06-28 00:19:47,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:47,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:47,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:47,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:19:47,318 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)] === [2024-06-28 00:19:47,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash 140862424, now seen corresponding path program 10 times [2024-06-28 00:19:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:47,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507988342] [2024-06-28 00:19:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:53,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:53,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507988342] [2024-06-28 00:19:53,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507988342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:53,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:53,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:53,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311557728] [2024-06-28 00:19:53,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:53,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:53,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:53,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:53,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:19:53,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 159 transitions, 2162 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:53,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:53,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:19:53,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:54,272 INFO L124 PetriNetUnfolderBase]: 377/722 cut-off events. [2024-06-28 00:19:54,273 INFO L125 PetriNetUnfolderBase]: For 29523/29526 co-relation queries the response was YES. [2024-06-28 00:19:54,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5584 conditions, 722 events. 377/722 cut-off events. For 29523/29526 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3502 event pairs, 66 based on Foata normal form. 4/723 useless extension candidates. Maximal degree in co-relation 5502. Up to 638 conditions per place. [2024-06-28 00:19:54,278 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 134 selfloop transitions, 34 changer transitions 0/170 dead transitions. [2024-06-28 00:19:54,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 170 transitions, 2522 flow [2024-06-28 00:19:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-06-28 00:19:54,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2024-06-28 00:19:54,280 INFO L175 Difference]: Start difference. First operand has 189 places, 159 transitions, 2162 flow. Second operand 9 states and 85 transitions. [2024-06-28 00:19:54,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 170 transitions, 2522 flow [2024-06-28 00:19:54,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 170 transitions, 2428 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 00:19:54,350 INFO L231 Difference]: Finished difference. Result has 190 places, 159 transitions, 2140 flow [2024-06-28 00:19:54,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2140, PETRI_PLACES=190, PETRI_TRANSITIONS=159} [2024-06-28 00:19:54,351 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-28 00:19:54,351 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 159 transitions, 2140 flow [2024-06-28 00:19:54,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:54,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:54,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:54,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:19:54,352 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)] === [2024-06-28 00:19:54,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:54,352 INFO L85 PathProgramCache]: Analyzing trace with hash -115847553, now seen corresponding path program 5 times [2024-06-28 00:19:54,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:54,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108618412] [2024-06-28 00:19:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:54,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:01,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:01,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108618412] [2024-06-28 00:20:01,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108618412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:01,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:01,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:20:01,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855488660] [2024-06-28 00:20:01,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:01,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:20:01,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:01,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:20:01,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:20:01,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:20:01,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 159 transitions, 2140 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:01,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:01,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:20:01,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:01,579 INFO L124 PetriNetUnfolderBase]: 375/719 cut-off events. [2024-06-28 00:20:01,579 INFO L125 PetriNetUnfolderBase]: For 28719/28722 co-relation queries the response was YES. [2024-06-28 00:20:01,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5495 conditions, 719 events. 375/719 cut-off events. For 28719/28722 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3507 event pairs, 68 based on Foata normal form. 3/719 useless extension candidates. Maximal degree in co-relation 5412. Up to 654 conditions per place. [2024-06-28 00:20:01,585 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 137 selfloop transitions, 31 changer transitions 0/170 dead transitions. [2024-06-28 00:20:01,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 170 transitions, 2528 flow [2024-06-28 00:20:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:20:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:20:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-28 00:20:01,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32916666666666666 [2024-06-28 00:20:01,587 INFO L175 Difference]: Start difference. First operand has 190 places, 159 transitions, 2140 flow. Second operand 8 states and 79 transitions. [2024-06-28 00:20:01,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 170 transitions, 2528 flow [2024-06-28 00:20:01,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 170 transitions, 2409 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:20:01,654 INFO L231 Difference]: Finished difference. Result has 190 places, 161 transitions, 2127 flow [2024-06-28 00:20:01,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2127, PETRI_PLACES=190, PETRI_TRANSITIONS=161} [2024-06-28 00:20:01,655 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-28 00:20:01,655 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 161 transitions, 2127 flow [2024-06-28 00:20:01,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:01,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:01,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:01,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:20:01,656 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)] === [2024-06-28 00:20:01,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:01,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1403635404, now seen corresponding path program 16 times [2024-06-28 00:20:01,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:01,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425459835] [2024-06-28 00:20:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:08,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:08,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425459835] [2024-06-28 00:20:08,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425459835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:08,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:08,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:20:08,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680752999] [2024-06-28 00:20:08,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:08,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:20:08,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:08,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:20:08,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:20:08,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:20:08,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 161 transitions, 2127 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:08,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:08,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:20:08,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:10,010 INFO L124 PetriNetUnfolderBase]: 409/793 cut-off events. [2024-06-28 00:20:10,010 INFO L125 PetriNetUnfolderBase]: For 41575/41578 co-relation queries the response was YES. [2024-06-28 00:20:10,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6148 conditions, 793 events. 409/793 cut-off events. For 41575/41578 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3981 event pairs, 61 based on Foata normal form. 10/800 useless extension candidates. Maximal degree in co-relation 6065. Up to 494 conditions per place. [2024-06-28 00:20:10,033 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 106 selfloop transitions, 72 changer transitions 7/187 dead transitions. [2024-06-28 00:20:10,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 187 transitions, 2899 flow [2024-06-28 00:20:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:20:10,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:20:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 124 transitions. [2024-06-28 00:20:10,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31794871794871793 [2024-06-28 00:20:10,034 INFO L175 Difference]: Start difference. First operand has 190 places, 161 transitions, 2127 flow. Second operand 13 states and 124 transitions. [2024-06-28 00:20:10,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 187 transitions, 2899 flow [2024-06-28 00:20:10,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 187 transitions, 2823 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:20:10,123 INFO L231 Difference]: Finished difference. Result has 197 places, 159 transitions, 2180 flow [2024-06-28 00:20:10,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2180, PETRI_PLACES=197, PETRI_TRANSITIONS=159} [2024-06-28 00:20:10,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2024-06-28 00:20:10,124 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 159 transitions, 2180 flow [2024-06-28 00:20:10,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:10,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:10,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:10,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:20:10,125 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)] === [2024-06-28 00:20:10,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:10,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1178435564, now seen corresponding path program 17 times [2024-06-28 00:20:10,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:10,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627537226] [2024-06-28 00:20:10,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:10,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:17,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627537226] [2024-06-28 00:20:17,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627537226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:17,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:17,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:20:17,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572397533] [2024-06-28 00:20:17,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:17,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:20:17,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:17,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:20:17,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:20:17,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:20:17,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 159 transitions, 2180 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:17,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:17,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:20:17,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:18,380 INFO L124 PetriNetUnfolderBase]: 400/778 cut-off events. [2024-06-28 00:20:18,380 INFO L125 PetriNetUnfolderBase]: For 43305/43308 co-relation queries the response was YES. [2024-06-28 00:20:18,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6117 conditions, 778 events. 400/778 cut-off events. For 43305/43308 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3907 event pairs, 72 based on Foata normal form. 12/787 useless extension candidates. Maximal degree in co-relation 6032. Up to 590 conditions per place. [2024-06-28 00:20:18,386 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 101 selfloop transitions, 60 changer transitions 12/175 dead transitions. [2024-06-28 00:20:18,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 175 transitions, 2608 flow [2024-06-28 00:20:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:20:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:20:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-28 00:20:18,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-28 00:20:18,388 INFO L175 Difference]: Start difference. First operand has 197 places, 159 transitions, 2180 flow. Second operand 10 states and 96 transitions. [2024-06-28 00:20:18,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 175 transitions, 2608 flow [2024-06-28 00:20:18,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 175 transitions, 2486 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 00:20:18,467 INFO L231 Difference]: Finished difference. Result has 194 places, 154 transitions, 2133 flow [2024-06-28 00:20:18,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2133, PETRI_PLACES=194, PETRI_TRANSITIONS=154} [2024-06-28 00:20:18,468 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-28 00:20:18,468 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 154 transitions, 2133 flow [2024-06-28 00:20:18,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:18,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:18,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:20:18,468 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)] === [2024-06-28 00:20:18,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1409145654, now seen corresponding path program 18 times [2024-06-28 00:20:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116923780] [2024-06-28 00:20:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:25,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:25,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116923780] [2024-06-28 00:20:25,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116923780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:25,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:25,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:20:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029634974] [2024-06-28 00:20:25,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:25,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:20:25,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:25,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:20:25,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:20:25,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:20:25,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 154 transitions, 2133 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:20:25,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:25,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:20:25,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:26,626 INFO L124 PetriNetUnfolderBase]: 392/766 cut-off events. [2024-06-28 00:20:26,626 INFO L125 PetriNetUnfolderBase]: For 43592/43595 co-relation queries the response was YES. [2024-06-28 00:20:26,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6089 conditions, 766 events. 392/766 cut-off events. For 43592/43595 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3842 event pairs, 87 based on Foata normal form. 12/775 useless extension candidates. Maximal degree in co-relation 6004. Up to 664 conditions per place. [2024-06-28 00:20:26,634 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 133 selfloop transitions, 21 changer transitions 14/170 dead transitions. [2024-06-28 00:20:26,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 170 transitions, 2567 flow [2024-06-28 00:20:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:20:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:20:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-28 00:20:26,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296969696969697 [2024-06-28 00:20:26,636 INFO L175 Difference]: Start difference. First operand has 194 places, 154 transitions, 2133 flow. Second operand 11 states and 98 transitions. [2024-06-28 00:20:26,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 170 transitions, 2567 flow [2024-06-28 00:20:26,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 170 transitions, 2469 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:20:26,742 INFO L231 Difference]: Finished difference. Result has 194 places, 148 transitions, 1997 flow [2024-06-28 00:20:26,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1997, PETRI_PLACES=194, PETRI_TRANSITIONS=148} [2024-06-28 00:20:26,743 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-28 00:20:26,743 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 148 transitions, 1997 flow [2024-06-28 00:20:26,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:20:26,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:26,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:26,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:20:26,743 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)] === [2024-06-28 00:20:26,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1403639124, now seen corresponding path program 19 times [2024-06-28 00:20:26,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:26,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586203319] [2024-06-28 00:20:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:26,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:36,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:36,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586203319] [2024-06-28 00:20:36,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586203319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:36,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:36,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:20:36,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241585837] [2024-06-28 00:20:36,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:36,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:20:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:20:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:20:36,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:20:36,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 148 transitions, 1997 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:36,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:36,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:20:36,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:37,369 INFO L124 PetriNetUnfolderBase]: 379/747 cut-off events. [2024-06-28 00:20:37,369 INFO L125 PetriNetUnfolderBase]: For 41446/41449 co-relation queries the response was YES. [2024-06-28 00:20:37,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5769 conditions, 747 events. 379/747 cut-off events. For 41446/41449 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3741 event pairs, 86 based on Foata normal form. 12/756 useless extension candidates. Maximal degree in co-relation 5685. Up to 640 conditions per place. [2024-06-28 00:20:37,378 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 130 selfloop transitions, 22 changer transitions 12/166 dead transitions. [2024-06-28 00:20:37,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 166 transitions, 2439 flow [2024-06-28 00:20:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:20:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:20:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 00:20:37,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3233333333333333 [2024-06-28 00:20:37,379 INFO L175 Difference]: Start difference. First operand has 194 places, 148 transitions, 1997 flow. Second operand 10 states and 97 transitions. [2024-06-28 00:20:37,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 166 transitions, 2439 flow [2024-06-28 00:20:37,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 166 transitions, 2346 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:20:37,486 INFO L231 Difference]: Finished difference. Result has 190 places, 144 transitions, 1903 flow [2024-06-28 00:20:37,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1903, PETRI_PLACES=190, PETRI_TRANSITIONS=144} [2024-06-28 00:20:37,487 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-28 00:20:37,487 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 144 transitions, 1903 flow [2024-06-28 00:20:37,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:37,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:37,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:20:37,488 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)] === [2024-06-28 00:20:37,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash 98371848, now seen corresponding path program 11 times [2024-06-28 00:20:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:37,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582835864] [2024-06-28 00:20:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:37,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:46,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:46,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582835864] [2024-06-28 00:20:46,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582835864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:46,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:46,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:20:46,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391090654] [2024-06-28 00:20:46,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:46,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:20:46,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:46,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:20:46,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:20:46,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:20:46,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 144 transitions, 1903 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:20:46,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:46,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:20:46,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:47,312 INFO L124 PetriNetUnfolderBase]: 351/691 cut-off events. [2024-06-28 00:20:47,312 INFO L125 PetriNetUnfolderBase]: For 33813/33816 co-relation queries the response was YES. [2024-06-28 00:20:47,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5290 conditions, 691 events. 351/691 cut-off events. For 33813/33816 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3373 event pairs, 82 based on Foata normal form. 4/692 useless extension candidates. Maximal degree in co-relation 5209. Up to 629 conditions per place. [2024-06-28 00:20:47,317 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 127 selfloop transitions, 26 changer transitions 0/155 dead transitions. [2024-06-28 00:20:47,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 155 transitions, 2233 flow [2024-06-28 00:20:47,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:20:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:20:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-28 00:20:47,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-28 00:20:47,320 INFO L175 Difference]: Start difference. First operand has 190 places, 144 transitions, 1903 flow. Second operand 11 states and 95 transitions. [2024-06-28 00:20:47,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 155 transitions, 2233 flow [2024-06-28 00:20:47,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 155 transitions, 2134 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:20:47,393 INFO L231 Difference]: Finished difference. Result has 188 places, 144 transitions, 1860 flow [2024-06-28 00:20:47,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1860, PETRI_PLACES=188, PETRI_TRANSITIONS=144} [2024-06-28 00:20:47,393 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-28 00:20:47,398 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 144 transitions, 1860 flow [2024-06-28 00:20:47,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:20:47,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:47,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:47,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:20:47,399 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)] === [2024-06-28 00:20:47,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:47,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1403789009, now seen corresponding path program 6 times [2024-06-28 00:20:47,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:47,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138253502] [2024-06-28 00:20:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:47,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:55,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:55,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138253502] [2024-06-28 00:20:55,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138253502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:55,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:55,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:20:55,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130329460] [2024-06-28 00:20:55,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:55,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:20:55,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:20:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:20:55,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:20:55,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 144 transitions, 1860 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:20:55,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:55,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:20:55,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:55,908 INFO L124 PetriNetUnfolderBase]: 349/688 cut-off events. [2024-06-28 00:20:55,908 INFO L125 PetriNetUnfolderBase]: For 29756/29759 co-relation queries the response was YES. [2024-06-28 00:20:55,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5118 conditions, 688 events. 349/688 cut-off events. For 29756/29759 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3357 event pairs, 82 based on Foata normal form. 3/688 useless extension candidates. Maximal degree in co-relation 5038. Up to 623 conditions per place. [2024-06-28 00:20:55,916 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 124 selfloop transitions, 29 changer transitions 0/155 dead transitions. [2024-06-28 00:20:55,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 155 transitions, 2206 flow [2024-06-28 00:20:55,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:20:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:20:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-28 00:20:55,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2909090909090909 [2024-06-28 00:20:55,918 INFO L175 Difference]: Start difference. First operand has 188 places, 144 transitions, 1860 flow. Second operand 11 states and 96 transitions. [2024-06-28 00:20:55,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 155 transitions, 2206 flow [2024-06-28 00:20:56,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 155 transitions, 2088 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 00:20:56,018 INFO L231 Difference]: Finished difference. Result has 189 places, 144 transitions, 1808 flow [2024-06-28 00:20:56,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1808, PETRI_PLACES=189, PETRI_TRANSITIONS=144} [2024-06-28 00:20:56,018 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-28 00:20:56,018 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 144 transitions, 1808 flow [2024-06-28 00:20:56,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:20:56,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:56,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:56,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:20:56,019 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)] === [2024-06-28 00:20:56,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash -351552948, now seen corresponding path program 20 times [2024-06-28 00:20:56,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:56,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648017179] [2024-06-28 00:20:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:05,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:05,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648017179] [2024-06-28 00:21:05,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648017179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:05,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:05,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:21:05,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783600455] [2024-06-28 00:21:05,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:05,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:21:05,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:21:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:21:05,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:21:05,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 144 transitions, 1808 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:21:05,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:05,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:21:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:06,192 INFO L124 PetriNetUnfolderBase]: 336/665 cut-off events. [2024-06-28 00:21:06,192 INFO L125 PetriNetUnfolderBase]: For 30008/30011 co-relation queries the response was YES. [2024-06-28 00:21:06,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4574 conditions, 665 events. 336/665 cut-off events. For 30008/30011 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3246 event pairs, 69 based on Foata normal form. 12/674 useless extension candidates. Maximal degree in co-relation 4494. Up to 554 conditions per place. [2024-06-28 00:21:06,199 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 122 selfloop transitions, 23 changer transitions 14/161 dead transitions. [2024-06-28 00:21:06,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 161 transitions, 2222 flow [2024-06-28 00:21:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:21:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:21:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 106 transitions. [2024-06-28 00:21:06,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2024-06-28 00:21:06,202 INFO L175 Difference]: Start difference. First operand has 189 places, 144 transitions, 1808 flow. Second operand 12 states and 106 transitions. [2024-06-28 00:21:06,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 161 transitions, 2222 flow [2024-06-28 00:21:06,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 161 transitions, 2101 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-28 00:21:06,283 INFO L231 Difference]: Finished difference. Result has 188 places, 138 transitions, 1669 flow [2024-06-28 00:21:06,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1669, PETRI_PLACES=188, PETRI_TRANSITIONS=138} [2024-06-28 00:21:06,284 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-28 00:21:06,284 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 138 transitions, 1669 flow [2024-06-28 00:21:06,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2024-06-28 00:21:06,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:06,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:06,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:21:06,284 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)] === [2024-06-28 00:21:06,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:06,285 INFO L85 PathProgramCache]: Analyzing trace with hash -126285103, now seen corresponding path program 1 times [2024-06-28 00:21:06,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:06,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527672873] [2024-06-28 00:21:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:06,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527672873] [2024-06-28 00:21:18,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527672873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:18,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:18,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:21:18,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13776332] [2024-06-28 00:21:18,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:18,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:21:18,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:21:18,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:21:18,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:21:18,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 138 transitions, 1669 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:21:18,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:18,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:21:18,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:19,816 INFO L124 PetriNetUnfolderBase]: 315/630 cut-off events. [2024-06-28 00:21:19,816 INFO L125 PetriNetUnfolderBase]: For 25389/25392 co-relation queries the response was YES. [2024-06-28 00:21:19,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4176 conditions, 630 events. 315/630 cut-off events. For 25389/25392 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3065 event pairs, 58 based on Foata normal form. 8/635 useless extension candidates. Maximal degree in co-relation 4098. Up to 459 conditions per place. [2024-06-28 00:21:19,821 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 97 selfloop transitions, 29 changer transitions 24/152 dead transitions. [2024-06-28 00:21:19,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 152 transitions, 2005 flow [2024-06-28 00:21:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:21:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:21:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-06-28 00:21:19,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-28 00:21:19,823 INFO L175 Difference]: Start difference. First operand has 188 places, 138 transitions, 1669 flow. Second operand 10 states and 90 transitions. [2024-06-28 00:21:19,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 152 transitions, 2005 flow [2024-06-28 00:21:19,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 152 transitions, 1936 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 00:21:19,894 INFO L231 Difference]: Finished difference. Result has 180 places, 125 transitions, 1508 flow [2024-06-28 00:21:19,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1508, PETRI_PLACES=180, PETRI_TRANSITIONS=125} [2024-06-28 00:21:19,895 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2024-06-28 00:21:19,895 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 125 transitions, 1508 flow [2024-06-28 00:21:19,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:21:19,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:19,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:19,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:21:19,895 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)] === [2024-06-28 00:21:19,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:19,896 INFO L85 PathProgramCache]: Analyzing trace with hash -61673579, now seen corresponding path program 2 times [2024-06-28 00:21:19,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:19,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317597477] [2024-06-28 00:21:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:19,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:28,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:28,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317597477] [2024-06-28 00:21:28,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317597477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:28,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:28,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:21:28,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642068209] [2024-06-28 00:21:28,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:28,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:21:28,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:28,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:21:28,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:21:28,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:21:28,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 125 transitions, 1508 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:21:28,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:28,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:21:28,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:29,979 INFO L124 PetriNetUnfolderBase]: 285/561 cut-off events. [2024-06-28 00:21:29,979 INFO L125 PetriNetUnfolderBase]: For 18905/18905 co-relation queries the response was YES. [2024-06-28 00:21:29,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3762 conditions, 561 events. 285/561 cut-off events. For 18905/18905 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2615 event pairs, 54 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3701. Up to 447 conditions per place. [2024-06-28 00:21:29,983 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 97 selfloop transitions, 36 changer transitions 0/135 dead transitions. [2024-06-28 00:21:29,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 135 transitions, 1800 flow [2024-06-28 00:21:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:21:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:21:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 89 transitions. [2024-06-28 00:21:29,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2696969696969697 [2024-06-28 00:21:29,986 INFO L175 Difference]: Start difference. First operand has 180 places, 125 transitions, 1508 flow. Second operand 11 states and 89 transitions. [2024-06-28 00:21:29,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 135 transitions, 1800 flow [2024-06-28 00:21:30,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 135 transitions, 1661 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-06-28 00:21:30,020 INFO L231 Difference]: Finished difference. Result has 161 places, 126 transitions, 1458 flow [2024-06-28 00:21:30,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1458, PETRI_PLACES=161, PETRI_TRANSITIONS=126} [2024-06-28 00:21:30,021 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 132 predicate places. [2024-06-28 00:21:30,021 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 126 transitions, 1458 flow [2024-06-28 00:21:30,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:21:30,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:30,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:30,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:21:30,022 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)] === [2024-06-28 00:21:30,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:30,023 INFO L85 PathProgramCache]: Analyzing trace with hash -103637473, now seen corresponding path program 1 times [2024-06-28 00:21:30,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:30,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745296076] [2024-06-28 00:21:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:30,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:37,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745296076] [2024-06-28 00:21:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745296076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:37,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:21:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471509479] [2024-06-28 00:21:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:37,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:21:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:21:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:21:37,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:21:37,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 126 transitions, 1458 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:21:37,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:37,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:21:37,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:38,168 INFO L124 PetriNetUnfolderBase]: 293/581 cut-off events. [2024-06-28 00:21:38,169 INFO L125 PetriNetUnfolderBase]: For 17293/17293 co-relation queries the response was YES. [2024-06-28 00:21:38,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3636 conditions, 581 events. 293/581 cut-off events. For 17293/17293 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2776 event pairs, 42 based on Foata normal form. 6/584 useless extension candidates. Maximal degree in co-relation 3584. Up to 282 conditions per place. [2024-06-28 00:21:38,173 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 67 selfloop transitions, 63 changer transitions 9/141 dead transitions. [2024-06-28 00:21:38,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 141 transitions, 1868 flow [2024-06-28 00:21:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:21:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:21:38,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 00:21:38,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-28 00:21:38,175 INFO L175 Difference]: Start difference. First operand has 161 places, 126 transitions, 1458 flow. Second operand 9 states and 89 transitions. [2024-06-28 00:21:38,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 141 transitions, 1868 flow [2024-06-28 00:21:38,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 141 transitions, 1748 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:21:38,216 INFO L231 Difference]: Finished difference. Result has 160 places, 121 transitions, 1409 flow [2024-06-28 00:21:38,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1409, PETRI_PLACES=160, PETRI_TRANSITIONS=121} [2024-06-28 00:21:38,216 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2024-06-28 00:21:38,217 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 121 transitions, 1409 flow [2024-06-28 00:21:38,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:21:38,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:38,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:38,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:21:38,217 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)] === [2024-06-28 00:21:38,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:38,218 INFO L85 PathProgramCache]: Analyzing trace with hash 351043157, now seen corresponding path program 3 times [2024-06-28 00:21:38,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:38,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784058309] [2024-06-28 00:21:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:38,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:45,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784058309] [2024-06-28 00:21:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784058309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:45,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:21:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832681431] [2024-06-28 00:21:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:21:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:21:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:21:45,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:21:45,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 121 transitions, 1409 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:21:45,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:45,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:21:45,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:46,522 INFO L124 PetriNetUnfolderBase]: 284/566 cut-off events. [2024-06-28 00:21:46,523 INFO L125 PetriNetUnfolderBase]: For 19524/19524 co-relation queries the response was YES. [2024-06-28 00:21:46,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3563 conditions, 566 events. 284/566 cut-off events. For 19524/19524 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2679 event pairs, 58 based on Foata normal form. 8/571 useless extension candidates. Maximal degree in co-relation 3512. Up to 404 conditions per place. [2024-06-28 00:21:46,527 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 76 selfloop transitions, 32 changer transitions 22/132 dead transitions. [2024-06-28 00:21:46,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 132 transitions, 1713 flow [2024-06-28 00:21:46,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:21:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:21:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-28 00:21:46,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-28 00:21:46,529 INFO L175 Difference]: Start difference. First operand has 160 places, 121 transitions, 1409 flow. Second operand 11 states and 95 transitions. [2024-06-28 00:21:46,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 132 transitions, 1713 flow [2024-06-28 00:21:46,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 132 transitions, 1592 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:21:46,565 INFO L231 Difference]: Finished difference. Result has 159 places, 105 transitions, 1148 flow [2024-06-28 00:21:46,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1148, PETRI_PLACES=159, PETRI_TRANSITIONS=105} [2024-06-28 00:21:46,566 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 00:21:46,566 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 105 transitions, 1148 flow [2024-06-28 00:21:46,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:21:46,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:46,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:46,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:21:46,567 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)] === [2024-06-28 00:21:46,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash 351049667, now seen corresponding path program 4 times [2024-06-28 00:21:46,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:46,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592907624] [2024-06-28 00:21:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:46,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:55,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:55,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592907624] [2024-06-28 00:21:55,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592907624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:55,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:55,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:21:55,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914287978] [2024-06-28 00:21:55,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:55,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:21:55,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:21:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:21:55,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:21:55,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 105 transitions, 1148 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:21:55,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:55,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:21:55,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:55,911 INFO L124 PetriNetUnfolderBase]: 250/512 cut-off events. [2024-06-28 00:21:55,911 INFO L125 PetriNetUnfolderBase]: For 15941/15941 co-relation queries the response was YES. [2024-06-28 00:21:55,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 512 events. 250/512 cut-off events. For 15941/15941 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2384 event pairs, 50 based on Foata normal form. 6/515 useless extension candidates. Maximal degree in co-relation 3048. Up to 368 conditions per place. [2024-06-28 00:21:55,915 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 75 selfloop transitions, 26 changer transitions 13/116 dead transitions. [2024-06-28 00:21:55,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 116 transitions, 1406 flow [2024-06-28 00:21:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:21:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:21:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 77 transitions. [2024-06-28 00:21:55,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32083333333333336 [2024-06-28 00:21:55,916 INFO L175 Difference]: Start difference. First operand has 159 places, 105 transitions, 1148 flow. Second operand 8 states and 77 transitions. [2024-06-28 00:21:55,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 116 transitions, 1406 flow [2024-06-28 00:21:55,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 116 transitions, 1314 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 00:21:55,939 INFO L231 Difference]: Finished difference. Result has 147 places, 99 transitions, 1043 flow [2024-06-28 00:21:55,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1043, PETRI_PLACES=147, PETRI_TRANSITIONS=99} [2024-06-28 00:21:55,939 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-06-28 00:21:55,940 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 99 transitions, 1043 flow [2024-06-28 00:21:55,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:21:55,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:55,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:55,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:21:55,940 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)] === [2024-06-28 00:21:55,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash 523770197, now seen corresponding path program 5 times [2024-06-28 00:21:55,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:55,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036796714] [2024-06-28 00:21:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:55,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:03,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:03,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036796714] [2024-06-28 00:22:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036796714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:03,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:03,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:22:03,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949497061] [2024-06-28 00:22:03,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:03,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:22:03,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:03,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:22:03,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:22:03,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:22:03,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 99 transitions, 1043 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:22:03,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:03,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:22:03,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:04,979 INFO L124 PetriNetUnfolderBase]: 245/501 cut-off events. [2024-06-28 00:22:04,979 INFO L125 PetriNetUnfolderBase]: For 14113/14113 co-relation queries the response was YES. [2024-06-28 00:22:04,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2950 conditions, 501 events. 245/501 cut-off events. For 14113/14113 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2308 event pairs, 48 based on Foata normal form. 6/504 useless extension candidates. Maximal degree in co-relation 2905. Up to 403 conditions per place. [2024-06-28 00:22:04,982 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 78 selfloop transitions, 23 changer transitions 10/113 dead transitions. [2024-06-28 00:22:04,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 113 transitions, 1323 flow [2024-06-28 00:22:04,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:22:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:22:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 89 transitions. [2024-06-28 00:22:04,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2696969696969697 [2024-06-28 00:22:04,984 INFO L175 Difference]: Start difference. First operand has 147 places, 99 transitions, 1043 flow. Second operand 11 states and 89 transitions. [2024-06-28 00:22:04,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 113 transitions, 1323 flow [2024-06-28 00:22:05,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 113 transitions, 1239 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:22:05,004 INFO L231 Difference]: Finished difference. Result has 143 places, 97 transitions, 997 flow [2024-06-28 00:22:05,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=997, PETRI_PLACES=143, PETRI_TRANSITIONS=97} [2024-06-28 00:22:05,004 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2024-06-28 00:22:05,004 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 97 transitions, 997 flow [2024-06-28 00:22:05,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:22:05,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:05,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:05,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:22:05,005 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)] === [2024-06-28 00:22:05,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:05,005 INFO L85 PathProgramCache]: Analyzing trace with hash 523533047, now seen corresponding path program 6 times [2024-06-28 00:22:05,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:05,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827153106] [2024-06-28 00:22:05,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:05,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:12,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:12,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827153106] [2024-06-28 00:22:12,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827153106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:12,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:12,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:22:12,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861495296] [2024-06-28 00:22:12,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:12,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:22:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:12,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:22:12,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:22:12,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:22:12,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 97 transitions, 997 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:12,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:12,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:22:12,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:13,682 INFO L124 PetriNetUnfolderBase]: 237/489 cut-off events. [2024-06-28 00:22:13,682 INFO L125 PetriNetUnfolderBase]: For 13084/13084 co-relation queries the response was YES. [2024-06-28 00:22:13,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2822 conditions, 489 events. 237/489 cut-off events. For 13084/13084 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2257 event pairs, 56 based on Foata normal form. 8/494 useless extension candidates. Maximal degree in co-relation 2778. Up to 388 conditions per place. [2024-06-28 00:22:13,687 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 70 selfloop transitions, 26 changer transitions 10/108 dead transitions. [2024-06-28 00:22:13,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 108 transitions, 1253 flow [2024-06-28 00:22:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:22:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:22:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 91 transitions. [2024-06-28 00:22:13,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27575757575757576 [2024-06-28 00:22:13,689 INFO L175 Difference]: Start difference. First operand has 143 places, 97 transitions, 997 flow. Second operand 11 states and 91 transitions. [2024-06-28 00:22:13,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 108 transitions, 1253 flow [2024-06-28 00:22:13,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 108 transitions, 1199 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:22:13,716 INFO L231 Difference]: Finished difference. Result has 141 places, 93 transitions, 953 flow [2024-06-28 00:22:13,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=953, PETRI_PLACES=141, PETRI_TRANSITIONS=93} [2024-06-28 00:22:13,717 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 112 predicate places. [2024-06-28 00:22:13,717 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 93 transitions, 953 flow [2024-06-28 00:22:13,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:13,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:13,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:13,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:22:13,718 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)] === [2024-06-28 00:22:13,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:13,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1980323083, now seen corresponding path program 2 times [2024-06-28 00:22:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:13,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365354590] [2024-06-28 00:22:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:13,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:21,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:21,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365354590] [2024-06-28 00:22:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365354590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:21,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:21,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:22:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469681605] [2024-06-28 00:22:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:21,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:22:21,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:21,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:22:21,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:22:21,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:22:21,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 93 transitions, 953 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:22:21,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:21,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:22:21,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:22,904 INFO L124 PetriNetUnfolderBase]: 226/471 cut-off events. [2024-06-28 00:22:22,905 INFO L125 PetriNetUnfolderBase]: For 12173/12173 co-relation queries the response was YES. [2024-06-28 00:22:22,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2723 conditions, 471 events. 226/471 cut-off events. For 12173/12173 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2156 event pairs, 45 based on Foata normal form. 6/475 useless extension candidates. Maximal degree in co-relation 2681. Up to 381 conditions per place. [2024-06-28 00:22:22,907 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 77 selfloop transitions, 25 changer transitions 8/112 dead transitions. [2024-06-28 00:22:22,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 112 transitions, 1227 flow [2024-06-28 00:22:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 00:22:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 00:22:22,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 124 transitions. [2024-06-28 00:22:22,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25833333333333336 [2024-06-28 00:22:22,909 INFO L175 Difference]: Start difference. First operand has 141 places, 93 transitions, 953 flow. Second operand 16 states and 124 transitions. [2024-06-28 00:22:22,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 112 transitions, 1227 flow [2024-06-28 00:22:22,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 112 transitions, 1173 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:22:22,929 INFO L231 Difference]: Finished difference. Result has 145 places, 91 transitions, 935 flow [2024-06-28 00:22:22,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=935, PETRI_PLACES=145, PETRI_TRANSITIONS=91} [2024-06-28 00:22:22,929 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-28 00:22:22,929 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 91 transitions, 935 flow [2024-06-28 00:22:22,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:22:22,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:22,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:22,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:22:22,930 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)] === [2024-06-28 00:22:22,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:22,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1910281469, now seen corresponding path program 7 times [2024-06-28 00:22:22,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:22,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984793724] [2024-06-28 00:22:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:22,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:30,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:30,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984793724] [2024-06-28 00:22:30,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984793724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:30,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:30,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:22:30,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117524015] [2024-06-28 00:22:30,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:30,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:22:30,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:22:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:22:30,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:22:30,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 91 transitions, 935 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:22:30,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:30,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:22:30,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:30,593 INFO L124 PetriNetUnfolderBase]: 202/423 cut-off events. [2024-06-28 00:22:30,594 INFO L125 PetriNetUnfolderBase]: For 10042/10042 co-relation queries the response was YES. [2024-06-28 00:22:30,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 423 events. 202/423 cut-off events. For 10042/10042 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1872 event pairs, 38 based on Foata normal form. 8/430 useless extension candidates. Maximal degree in co-relation 2293. Up to 331 conditions per place. [2024-06-28 00:22:30,596 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 77 selfloop transitions, 13 changer transitions 13/105 dead transitions. [2024-06-28 00:22:30,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 105 transitions, 1193 flow [2024-06-28 00:22:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:22:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:22:30,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-06-28 00:22:30,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3074074074074074 [2024-06-28 00:22:30,598 INFO L175 Difference]: Start difference. First operand has 145 places, 91 transitions, 935 flow. Second operand 9 states and 83 transitions. [2024-06-28 00:22:30,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 105 transitions, 1193 flow [2024-06-28 00:22:30,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 105 transitions, 1138 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-28 00:22:30,612 INFO L231 Difference]: Finished difference. Result has 137 places, 85 transitions, 850 flow [2024-06-28 00:22:30,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=850, PETRI_PLACES=137, PETRI_TRANSITIONS=85} [2024-06-28 00:22:30,612 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 108 predicate places. [2024-06-28 00:22:30,612 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 85 transitions, 850 flow [2024-06-28 00:22:30,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:22:30,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:30,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:30,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:22:30,613 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)] === [2024-06-28 00:22:30,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash 874125609, now seen corresponding path program 8 times [2024-06-28 00:22:30,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:30,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000247641] [2024-06-28 00:22:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:30,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:37,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:37,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000247641] [2024-06-28 00:22:37,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000247641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:37,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:37,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:22:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126334736] [2024-06-28 00:22:37,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:37,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:22:37,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:22:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:22:37,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:22:37,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 85 transitions, 850 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:22:37,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:37,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:22:37,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:37,706 INFO L124 PetriNetUnfolderBase]: 190/400 cut-off events. [2024-06-28 00:22:37,706 INFO L125 PetriNetUnfolderBase]: For 8473/8473 co-relation queries the response was YES. [2024-06-28 00:22:37,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2168 conditions, 400 events. 190/400 cut-off events. For 8473/8473 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1715 event pairs, 19 based on Foata normal form. 6/403 useless extension candidates. Maximal degree in co-relation 2127. Up to 162 conditions per place. [2024-06-28 00:22:37,708 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 52 selfloop transitions, 34 changer transitions 12/100 dead transitions. [2024-06-28 00:22:37,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 100 transitions, 1084 flow [2024-06-28 00:22:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:22:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:22:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 86 transitions. [2024-06-28 00:22:37,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2866666666666667 [2024-06-28 00:22:37,709 INFO L175 Difference]: Start difference. First operand has 137 places, 85 transitions, 850 flow. Second operand 10 states and 86 transitions. [2024-06-28 00:22:37,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 100 transitions, 1084 flow [2024-06-28 00:22:37,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 100 transitions, 1040 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:22:37,721 INFO L231 Difference]: Finished difference. Result has 128 places, 81 transitions, 833 flow [2024-06-28 00:22:37,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=833, PETRI_PLACES=128, PETRI_TRANSITIONS=81} [2024-06-28 00:22:37,721 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-28 00:22:37,721 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 81 transitions, 833 flow [2024-06-28 00:22:37,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:22:37,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:37,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:22:37,722 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)] === [2024-06-28 00:22:37,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:37,722 INFO L85 PathProgramCache]: Analyzing trace with hash 865851399, now seen corresponding path program 9 times [2024-06-28 00:22:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:37,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530512825] [2024-06-28 00:22:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:44,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:44,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530512825] [2024-06-28 00:22:44,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530512825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:44,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:44,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:22:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456293865] [2024-06-28 00:22:44,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:44,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:22:44,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:22:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:22:44,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:22:44,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 81 transitions, 833 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:44,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:44,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:22:44,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:44,666 INFO L124 PetriNetUnfolderBase]: 176/374 cut-off events. [2024-06-28 00:22:44,667 INFO L125 PetriNetUnfolderBase]: For 7398/7398 co-relation queries the response was YES. [2024-06-28 00:22:44,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2073 conditions, 374 events. 176/374 cut-off events. For 7398/7398 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1573 event pairs, 34 based on Foata normal form. 6/377 useless extension candidates. Maximal degree in co-relation 2034. Up to 264 conditions per place. [2024-06-28 00:22:44,669 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 57 selfloop transitions, 24 changer transitions 9/92 dead transitions. [2024-06-28 00:22:44,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 92 transitions, 1043 flow [2024-06-28 00:22:44,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:22:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:22:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 85 transitions. [2024-06-28 00:22:44,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2833333333333333 [2024-06-28 00:22:44,671 INFO L175 Difference]: Start difference. First operand has 128 places, 81 transitions, 833 flow. Second operand 10 states and 85 transitions. [2024-06-28 00:22:44,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 92 transitions, 1043 flow [2024-06-28 00:22:44,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 92 transitions, 953 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:22:44,685 INFO L231 Difference]: Finished difference. Result has 122 places, 78 transitions, 767 flow [2024-06-28 00:22:44,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=767, PETRI_PLACES=122, PETRI_TRANSITIONS=78} [2024-06-28 00:22:44,686 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2024-06-28 00:22:44,686 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 78 transitions, 767 flow [2024-06-28 00:22:44,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:44,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:44,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:44,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:22:44,687 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)] === [2024-06-28 00:22:44,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1943445751, now seen corresponding path program 10 times [2024-06-28 00:22:44,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:44,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135367832] [2024-06-28 00:22:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:44,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:52,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:52,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135367832] [2024-06-28 00:22:52,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135367832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:52,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:52,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:22:52,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253845386] [2024-06-28 00:22:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:52,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:22:52,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:52,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:22:52,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:22:52,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:22:52,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 78 transitions, 767 flow. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2024-06-28 00:22:52,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:52,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:22:52,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:53,303 INFO L124 PetriNetUnfolderBase]: 168/362 cut-off events. [2024-06-28 00:22:53,303 INFO L125 PetriNetUnfolderBase]: For 6223/6223 co-relation queries the response was YES. [2024-06-28 00:22:53,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 362 events. 168/362 cut-off events. For 6223/6223 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1521 event pairs, 30 based on Foata normal form. 6/365 useless extension candidates. Maximal degree in co-relation 1899. Up to 255 conditions per place. [2024-06-28 00:22:53,305 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 54 selfloop transitions, 23 changer transitions 11/90 dead transitions. [2024-06-28 00:22:53,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 90 transitions, 975 flow [2024-06-28 00:22:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:22:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:22:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 89 transitions. [2024-06-28 00:22:53,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2696969696969697 [2024-06-28 00:22:53,306 INFO L175 Difference]: Start difference. First operand has 122 places, 78 transitions, 767 flow. Second operand 11 states and 89 transitions. [2024-06-28 00:22:53,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 90 transitions, 975 flow [2024-06-28 00:22:53,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 90 transitions, 923 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:22:53,316 INFO L231 Difference]: Finished difference. Result has 121 places, 75 transitions, 732 flow [2024-06-28 00:22:53,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=732, PETRI_PLACES=121, PETRI_TRANSITIONS=75} [2024-06-28 00:22:53,316 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-28 00:22:53,316 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 75 transitions, 732 flow [2024-06-28 00:22:53,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2024-06-28 00:22:53,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:53,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:53,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:22:53,317 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)] === [2024-06-28 00:22:53,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash 71532761, now seen corresponding path program 11 times [2024-06-28 00:22:53,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:53,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759497881] [2024-06-28 00:22:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:53,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:00,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:00,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759497881] [2024-06-28 00:23:00,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759497881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:00,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:00,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009816451] [2024-06-28 00:23:00,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:00,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:00,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:23:00,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 75 transitions, 732 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:00,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:00,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:23:00,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:00,539 INFO L124 PetriNetUnfolderBase]: 162/352 cut-off events. [2024-06-28 00:23:00,539 INFO L125 PetriNetUnfolderBase]: For 6364/6364 co-relation queries the response was YES. [2024-06-28 00:23:00,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 352 events. 162/352 cut-off events. For 6364/6364 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1473 event pairs, 34 based on Foata normal form. 8/357 useless extension candidates. Maximal degree in co-relation 1839. Up to 242 conditions per place. [2024-06-28 00:23:00,541 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 51 selfloop transitions, 20 changer transitions 13/86 dead transitions. [2024-06-28 00:23:00,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 86 transitions, 944 flow [2024-06-28 00:23:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:23:00,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:23:00,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 84 transitions. [2024-06-28 00:23:00,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28 [2024-06-28 00:23:00,543 INFO L175 Difference]: Start difference. First operand has 121 places, 75 transitions, 732 flow. Second operand 10 states and 84 transitions. [2024-06-28 00:23:00,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 86 transitions, 944 flow [2024-06-28 00:23:00,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 86 transitions, 892 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:23:00,551 INFO L231 Difference]: Finished difference. Result has 116 places, 68 transitions, 664 flow [2024-06-28 00:23:00,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=664, PETRI_PLACES=116, PETRI_TRANSITIONS=68} [2024-06-28 00:23:00,551 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-28 00:23:00,551 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 68 transitions, 664 flow [2024-06-28 00:23:00,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:00,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:00,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:00,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:23:00,552 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)] === [2024-06-28 00:23:00,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:00,552 INFO L85 PathProgramCache]: Analyzing trace with hash 703695433, now seen corresponding path program 12 times [2024-06-28 00:23:00,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:00,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276958458] [2024-06-28 00:23:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:00,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:08,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:08,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276958458] [2024-06-28 00:23:08,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276958458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:08,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:08,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:23:08,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503711776] [2024-06-28 00:23:08,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:08,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:23:08,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:08,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:23:08,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:23:08,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:23:08,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 68 transitions, 664 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:23:08,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:08,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:23:08,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:08,647 INFO L124 PetriNetUnfolderBase]: 145/321 cut-off events. [2024-06-28 00:23:08,648 INFO L125 PetriNetUnfolderBase]: For 4814/4814 co-relation queries the response was YES. [2024-06-28 00:23:08,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 321 events. 145/321 cut-off events. For 4814/4814 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1307 event pairs, 33 based on Foata normal form. 8/326 useless extension candidates. Maximal degree in co-relation 1615. Up to 196 conditions per place. [2024-06-28 00:23:08,649 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 36 selfloop transitions, 28 changer transitions 14/80 dead transitions. [2024-06-28 00:23:08,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 80 transitions, 866 flow [2024-06-28 00:23:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:23:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:23:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 85 transitions. [2024-06-28 00:23:08,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2833333333333333 [2024-06-28 00:23:08,651 INFO L175 Difference]: Start difference. First operand has 116 places, 68 transitions, 664 flow. Second operand 10 states and 85 transitions. [2024-06-28 00:23:08,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 80 transitions, 866 flow [2024-06-28 00:23:08,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 80 transitions, 774 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 00:23:08,658 INFO L231 Difference]: Finished difference. Result has 109 places, 61 transitions, 579 flow [2024-06-28 00:23:08,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=579, PETRI_PLACES=109, PETRI_TRANSITIONS=61} [2024-06-28 00:23:08,659 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2024-06-28 00:23:08,659 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 61 transitions, 579 flow [2024-06-28 00:23:08,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:23:08,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:08,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:08,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:23:08,660 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)] === [2024-06-28 00:23:08,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1079204165, now seen corresponding path program 13 times [2024-06-28 00:23:08,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:08,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897579423] [2024-06-28 00:23:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:08,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:17,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:17,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:17,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897579423] [2024-06-28 00:23:17,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897579423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:17,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:17,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:23:17,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607113422] [2024-06-28 00:23:17,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:17,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:23:17,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:17,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:23:17,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:23:17,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:23:17,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 61 transitions, 579 flow. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2024-06-28 00:23:17,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:17,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:23:17,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:18,103 INFO L124 PetriNetUnfolderBase]: 132/294 cut-off events. [2024-06-28 00:23:18,104 INFO L125 PetriNetUnfolderBase]: For 3829/3829 co-relation queries the response was YES. [2024-06-28 00:23:18,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 294 events. 132/294 cut-off events. For 3829/3829 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1159 event pairs, 31 based on Foata normal form. 6/297 useless extension candidates. Maximal degree in co-relation 1429. Up to 218 conditions per place. [2024-06-28 00:23:18,106 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 46 selfloop transitions, 13 changer transitions 11/72 dead transitions. [2024-06-28 00:23:18,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 72 transitions, 747 flow [2024-06-28 00:23:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:23:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:23:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 85 transitions. [2024-06-28 00:23:18,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25757575757575757 [2024-06-28 00:23:18,107 INFO L175 Difference]: Start difference. First operand has 109 places, 61 transitions, 579 flow. Second operand 11 states and 85 transitions. [2024-06-28 00:23:18,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 72 transitions, 747 flow [2024-06-28 00:23:18,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 72 transitions, 662 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:23:18,115 INFO L231 Difference]: Finished difference. Result has 102 places, 57 transitions, 484 flow [2024-06-28 00:23:18,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=484, PETRI_PLACES=102, PETRI_TRANSITIONS=57} [2024-06-28 00:23:18,116 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-28 00:23:18,116 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 57 transitions, 484 flow [2024-06-28 00:23:18,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2024-06-28 00:23:18,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:18,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:18,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:23:18,117 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)] === [2024-06-28 00:23:18,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash 567795109, now seen corresponding path program 14 times [2024-06-28 00:23:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:18,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257085507] [2024-06-28 00:23:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:18,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:26,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257085507] [2024-06-28 00:23:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257085507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:26,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:26,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:23:26,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146075521] [2024-06-28 00:23:26,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:26,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:23:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:23:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:23:27,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:23:27,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 57 transitions, 484 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:23:27,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:27,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:23:27,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:27,515 INFO L124 PetriNetUnfolderBase]: 124/278 cut-off events. [2024-06-28 00:23:27,516 INFO L125 PetriNetUnfolderBase]: For 3089/3089 co-relation queries the response was YES. [2024-06-28 00:23:27,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 278 events. 124/278 cut-off events. For 3089/3089 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1077 event pairs, 31 based on Foata normal form. 6/281 useless extension candidates. Maximal degree in co-relation 1262. Up to 193 conditions per place. [2024-06-28 00:23:27,518 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 12 changer transitions 12/69 dead transitions. [2024-06-28 00:23:27,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 69 transitions, 648 flow [2024-06-28 00:23:27,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:23:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:23:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 84 transitions. [2024-06-28 00:23:27,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28 [2024-06-28 00:23:27,519 INFO L175 Difference]: Start difference. First operand has 102 places, 57 transitions, 484 flow. Second operand 10 states and 84 transitions. [2024-06-28 00:23:27,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 69 transitions, 648 flow [2024-06-28 00:23:27,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 69 transitions, 587 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:23:27,526 INFO L231 Difference]: Finished difference. Result has 95 places, 52 transitions, 416 flow [2024-06-28 00:23:27,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=416, PETRI_PLACES=95, PETRI_TRANSITIONS=52} [2024-06-28 00:23:27,527 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-28 00:23:27,527 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 52 transitions, 416 flow [2024-06-28 00:23:27,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:23:27,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:27,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:27,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:23:27,527 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)] === [2024-06-28 00:23:27,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:27,528 INFO L85 PathProgramCache]: Analyzing trace with hash 740515639, now seen corresponding path program 15 times [2024-06-28 00:23:27,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:27,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355979693] [2024-06-28 00:23:27,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:27,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:35,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:35,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355979693] [2024-06-28 00:23:35,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355979693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:35,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:35,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:35,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774604399] [2024-06-28 00:23:35,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:35,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:35,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:35,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:35,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:35,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:23:35,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 52 transitions, 416 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:35,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:35,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:23:35,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:35,560 INFO L124 PetriNetUnfolderBase]: 115/259 cut-off events. [2024-06-28 00:23:35,561 INFO L125 PetriNetUnfolderBase]: For 3079/3079 co-relation queries the response was YES. [2024-06-28 00:23:35,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 259 events. 115/259 cut-off events. For 3079/3079 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 956 event pairs, 29 based on Foata normal form. 6/262 useless extension candidates. Maximal degree in co-relation 1159. Up to 178 conditions per place. [2024-06-28 00:23:35,562 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 9 changer transitions 11/64 dead transitions. [2024-06-28 00:23:35,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 64 transitions, 570 flow [2024-06-28 00:23:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:23:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:23:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 75 transitions. [2024-06-28 00:23:35,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-06-28 00:23:35,563 INFO L175 Difference]: Start difference. First operand has 95 places, 52 transitions, 416 flow. Second operand 9 states and 75 transitions. [2024-06-28 00:23:35,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 64 transitions, 570 flow [2024-06-28 00:23:35,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 64 transitions, 521 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:23:35,567 INFO L231 Difference]: Finished difference. Result has 86 places, 49 transitions, 363 flow [2024-06-28 00:23:35,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=363, PETRI_PLACES=86, PETRI_TRANSITIONS=49} [2024-06-28 00:23:35,567 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-28 00:23:35,567 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 49 transitions, 363 flow [2024-06-28 00:23:35,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:35,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:35,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:35,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:23:35,568 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)] === [2024-06-28 00:23:35,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2134994485, now seen corresponding path program 16 times [2024-06-28 00:23:35,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090516360] [2024-06-28 00:23:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:42,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090516360] [2024-06-28 00:23:42,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090516360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:42,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:42,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:23:42,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331579488] [2024-06-28 00:23:42,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:42,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:23:42,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:42,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:23:42,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:23:42,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:23:42,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 49 transitions, 363 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:23:42,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:42,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:23:42,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:43,249 INFO L124 PetriNetUnfolderBase]: 98/228 cut-off events. [2024-06-28 00:23:43,250 INFO L125 PetriNetUnfolderBase]: For 1913/1913 co-relation queries the response was YES. [2024-06-28 00:23:43,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 228 events. 98/228 cut-off events. For 1913/1913 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 805 event pairs, 26 based on Foata normal form. 6/231 useless extension candidates. Maximal degree in co-relation 947. Up to 152 conditions per place. [2024-06-28 00:23:43,251 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 10 changer transitions 8/60 dead transitions. [2024-06-28 00:23:43,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 60 transitions, 507 flow [2024-06-28 00:23:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:23:43,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:23:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 74 transitions. [2024-06-28 00:23:43,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2740740740740741 [2024-06-28 00:23:43,252 INFO L175 Difference]: Start difference. First operand has 86 places, 49 transitions, 363 flow. Second operand 9 states and 74 transitions. [2024-06-28 00:23:43,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 60 transitions, 507 flow [2024-06-28 00:23:43,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 60 transitions, 483 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:23:43,256 INFO L231 Difference]: Finished difference. Result has 82 places, 47 transitions, 346 flow [2024-06-28 00:23:43,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=346, PETRI_PLACES=82, PETRI_TRANSITIONS=47} [2024-06-28 00:23:43,257 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-28 00:23:43,257 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 47 transitions, 346 flow [2024-06-28 00:23:43,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 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) [2024-06-28 00:23:43,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:43,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:43,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:23:43,257 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)] === [2024-06-28 00:23:43,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:43,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1072954751, now seen corresponding path program 3 times [2024-06-28 00:23:43,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:43,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913511702] [2024-06-28 00:23:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:43,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913511702] [2024-06-28 00:23:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913511702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:51,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:51,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709032470] [2024-06-28 00:23:51,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:51,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:51,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:51,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:51,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:23:51,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 47 transitions, 346 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:51,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:51,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:23:51,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:51,908 INFO L124 PetriNetUnfolderBase]: 74/180 cut-off events. [2024-06-28 00:23:51,909 INFO L125 PetriNetUnfolderBase]: For 1043/1043 co-relation queries the response was YES. [2024-06-28 00:23:51,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 180 events. 74/180 cut-off events. For 1043/1043 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 587 event pairs, 18 based on Foata normal form. 8/185 useless extension candidates. Maximal degree in co-relation 691. Up to 99 conditions per place. [2024-06-28 00:23:51,910 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 31 selfloop transitions, 6 changer transitions 17/56 dead transitions. [2024-06-28 00:23:51,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 56 transitions, 472 flow [2024-06-28 00:23:51,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:23:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:23:51,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 78 transitions. [2024-06-28 00:23:51,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26 [2024-06-28 00:23:51,911 INFO L175 Difference]: Start difference. First operand has 82 places, 47 transitions, 346 flow. Second operand 10 states and 78 transitions. [2024-06-28 00:23:51,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 56 transitions, 472 flow [2024-06-28 00:23:51,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 56 transitions, 442 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:23:51,914 INFO L231 Difference]: Finished difference. Result has 81 places, 37 transitions, 264 flow [2024-06-28 00:23:51,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=81, PETRI_TRANSITIONS=37} [2024-06-28 00:23:51,914 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-28 00:23:51,914 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 37 transitions, 264 flow [2024-06-28 00:23:51,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:51,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:51,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:51,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:23:51,915 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)] === [2024-06-28 00:23:51,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:51,915 INFO L85 PathProgramCache]: Analyzing trace with hash -950140823, now seen corresponding path program 1 times [2024-06-28 00:23:51,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:51,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940860439] [2024-06-28 00:23:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:51,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:00,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940860439] [2024-06-28 00:24:00,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940860439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:00,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:00,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:24:00,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919288452] [2024-06-28 00:24:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:00,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:24:00,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:00,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:24:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:24:00,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-28 00:24:00,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 37 transitions, 264 flow. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 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) [2024-06-28 00:24:00,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:00,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-28 00:24:00,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:01,396 INFO L124 PetriNetUnfolderBase]: 48/122 cut-off events. [2024-06-28 00:24:01,397 INFO L125 PetriNetUnfolderBase]: For 371/371 co-relation queries the response was YES. [2024-06-28 00:24:01,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 122 events. 48/122 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 331 event pairs, 4 based on Foata normal form. 4/124 useless extension candidates. Maximal degree in co-relation 446. Up to 29 conditions per place. [2024-06-28 00:24:01,397 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2024-06-28 00:24:01,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 45 transitions, 344 flow [2024-06-28 00:24:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:24:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:24:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 79 transitions. [2024-06-28 00:24:01,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21944444444444444 [2024-06-28 00:24:01,398 INFO L175 Difference]: Start difference. First operand has 81 places, 37 transitions, 264 flow. Second operand 12 states and 79 transitions. [2024-06-28 00:24:01,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 45 transitions, 344 flow [2024-06-28 00:24:01,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 45 transitions, 253 flow, removed 1 selfloop flow, removed 19 redundant places. [2024-06-28 00:24:01,399 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2024-06-28 00:24:01,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2024-06-28 00:24:01,400 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-28 00:24:01,400 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2024-06-28 00:24:01,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 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) [2024-06-28 00:24:01,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 00:24:01,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 00:24:01,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 00:24:01,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 00:24:01,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:24:01,407 INFO L445 BasicCegarLoop]: Path program histogram: [20, 16, 11, 10, 7, 7, 6, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:01,409 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:24:01,409 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:24:01,413 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:24:01,413 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:24:01,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:24:01 BasicIcfg [2024-06-28 00:24:01,414 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:24:01,414 INFO L158 Benchmark]: Toolchain (without parser) took 817857.92ms. Allocated memory was 174.1MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 112.5MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 234.0MB. Max. memory is 16.1GB. [2024-06-28 00:24:01,415 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 132.1MB. Free memory is still 108.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:24:01,415 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 132.1MB. Free memory is still 104.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:24:01,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 620.02ms. Allocated memory is still 174.1MB. Free memory was 112.1MB in the beginning and 76.0MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-28 00:24:01,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.98ms. Allocated memory is still 174.1MB. Free memory was 76.0MB in the beginning and 68.0MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-28 00:24:01,416 INFO L158 Benchmark]: Boogie Preprocessor took 59.60ms. Allocated memory is still 174.1MB. Free memory was 68.0MB in the beginning and 62.3MB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:24:01,416 INFO L158 Benchmark]: RCFGBuilder took 2797.75ms. Allocated memory was 174.1MB in the beginning and 379.6MB in the end (delta: 205.5MB). Free memory was 62.1MB in the beginning and 173.8MB in the end (delta: -111.7MB). Peak memory consumption was 95.9MB. Max. memory is 16.1GB. [2024-06-28 00:24:01,416 INFO L158 Benchmark]: TraceAbstraction took 814301.27ms. Allocated memory was 379.6MB in the beginning and 2.2GB in the end (delta: 1.8GB). Free memory was 173.8MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. [2024-06-28 00:24:01,417 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.09ms. Allocated memory is still 132.1MB. Free memory is still 108.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.09ms. Allocated memory is still 132.1MB. Free memory is still 104.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 620.02ms. Allocated memory is still 174.1MB. Free memory was 112.1MB in the beginning and 76.0MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.98ms. Allocated memory is still 174.1MB. Free memory was 76.0MB in the beginning and 68.0MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.60ms. Allocated memory is still 174.1MB. Free memory was 68.0MB in the beginning and 62.3MB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2797.75ms. Allocated memory was 174.1MB in the beginning and 379.6MB in the end (delta: 205.5MB). Free memory was 62.1MB in the beginning and 173.8MB in the end (delta: -111.7MB). Peak memory consumption was 95.9MB. Max. memory is 16.1GB. * TraceAbstraction took 814301.27ms. Allocated memory was 379.6MB in the beginning and 2.2GB in the end (delta: 1.8GB). Free memory was 173.8MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 828]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 814.2s, OverallIterations: 102, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 77.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2452 SdHoareTripleChecker+Valid, 29.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2263 mSDsluCounter, 1371 SdHoareTripleChecker+Invalid, 26.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1006 mSDsCounter, 1090 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26387 IncrementalHoareTripleChecker+Invalid, 27477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1090 mSolverCounterUnsat, 365 mSDtfsCounter, 26387 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1081 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 1073 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 97.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2423occurred in iteration=66, InterpolantAutomatonStates: 948, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 7.0s SatisfiabilityAnalysisTime, 728.0s InterpolantComputationTime, 1646 NumberOfCodeBlocks, 1646 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 1544 ConstructedInterpolants, 0 QuantifiedInterpolants, 166645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 102 InterpolantComputations, 102 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:24:01,635 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-06-28 00:24:01,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE