./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 13:51:33,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:51:33,388 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:51:33,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:51:33,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:51:33,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:51:33,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:51:33,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:51:33,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:51:33,422 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:51:33,422 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:51:33,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:51:33,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:51:33,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:51:33,425 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:51:33,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:51:33,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:51:33,425 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:51:33,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:51:33,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:51:33,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:51:33,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:51:33,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:51:33,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:51:33,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:51:33,427 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:51:33,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:51:33,427 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:51:33,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:51:33,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:51:33,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:51:33,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:51:33,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:51:33,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:51:33,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:51:33,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:51:33,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:51:33,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:51:33,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:51:33,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:51:33,431 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:51:33,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:51:33,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:51:33,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:51:33,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:51:33,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:51:33,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:51:33,698 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:51:33,699 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:51:33,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_tso.yml/witness.yml [2024-06-14 13:51:33,863 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:51:33,863 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:51:33,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-14 13:51:34,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:51:35,232 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:51:35,236 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-14 13:51:35,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9acd3772d/8fee625983fe48b0b4351eb28d0bf8e9/FLAG1ba3eac92 [2024-06-14 13:51:35,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9acd3772d/8fee625983fe48b0b4351eb28d0bf8e9 [2024-06-14 13:51:35,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:51:35,266 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:51:35,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:51:35,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:51:35,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:51:35,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:51:33" (1/2) ... [2024-06-14 13:51:35,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441eed86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35, skipping insertion in model container [2024-06-14 13:51:35,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:51:33" (1/2) ... [2024-06-14 13:51:35,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@76b4ccb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:51:35, skipping insertion in model container [2024-06-14 13:51:35,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:51:35" (2/2) ... [2024-06-14 13:51:35,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441eed86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:35, skipping insertion in model container [2024-06-14 13:51:35,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:51:35" (2/2) ... [2024-06-14 13:51:35,279 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:51:35,335 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:51:35,336 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] (((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd1 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd1 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd1 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL))) && (! multithreaded || (((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 1) && y$w_buff1 <= 1) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-14 13:51:35,337 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd1 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd1 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd1 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL))) && (! multithreaded || (((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 1) && y$w_buff1 <= 1) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-14 13:51:35,337 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:51:35,337 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-14 13:51:35,378 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:51:35,682 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:51:35,695 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:51:36,037 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:51:36,081 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:51:36,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36 WrapperNode [2024-06-14 13:51:36,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:51:36,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:51:36,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:51:36,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:51:36,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,171 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 176 [2024-06-14 13:51:36,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:51:36,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:51:36,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:51:36,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:51:36,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,214 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 13:51:36,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,256 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:51:36,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:51:36,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:51:36,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:51:36,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (1/1) ... [2024-06-14 13:51:36,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:51:36,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:51:36,286 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) [2024-06-14 13:51:36,305 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 [2024-06-14 13:51:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:51:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:51:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:51:36,317 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:51:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:51:36,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:51:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:51:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:51:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:51:36,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:51:36,320 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:51:36,444 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:51:36,446 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:51:37,260 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:51:37,260 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:51:37,593 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:51:37,597 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:51:37,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:51:37 BoogieIcfgContainer [2024-06-14 13:51:37,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:51:37,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:51:37,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:51:37,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:51:37,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:51:33" (1/4) ... [2024-06-14 13:51:37,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570f69ea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:51:37, skipping insertion in model container [2024-06-14 13:51:37,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:51:35" (2/4) ... [2024-06-14 13:51:37,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570f69ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:51:37, skipping insertion in model container [2024-06-14 13:51:37,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:51:36" (3/4) ... [2024-06-14 13:51:37,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570f69ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:51:37, skipping insertion in model container [2024-06-14 13:51:37,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:51:37" (4/4) ... [2024-06-14 13:51:37,618 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2024-06-14 13:51:37,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:51:37,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 13:51:37,645 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:51:37,756 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:51:37,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 13:51:37,846 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 13:51:37,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:51:37,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 13:51:37,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 13:51:37,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 13:51:37,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:51:37,863 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;@3ab1d6c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:51:37,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 13:51:37,867 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:51:37,868 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 13:51:37,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:51:37,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:37,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:51:37,869 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)] === [2024-06-14 13:51:37,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash -400399295, now seen corresponding path program 1 times [2024-06-14 13:51:37,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:37,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217942164] [2024-06-14 13:51:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:37,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:40,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:40,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217942164] [2024-06-14 13:51:40,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217942164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:40,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:40,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:51:40,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90562801] [2024-06-14 13:51:40,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:40,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:51:40,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:40,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:51:40,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:51:40,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 13:51:40,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:40,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:40,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 13:51:40,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:40,641 INFO L124 PetriNetUnfolderBase]: 216/387 cut-off events. [2024-06-14 13:51:40,642 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 13:51:40,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 387 events. 216/387 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1367 event pairs, 133 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-14 13:51:40,647 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 13:51:40,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 125 flow [2024-06-14 13:51:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:51:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:51:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-14 13:51:40,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 13:51:40,658 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 48 transitions. [2024-06-14 13:51:40,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 125 flow [2024-06-14 13:51:40,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 13:51:40,662 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 13:51:40,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-14 13:51:40,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 13:51:40,666 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 13:51:40,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:40,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:40,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:40,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:51:40,667 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)] === [2024-06-14 13:51:40,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:40,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1763365024, now seen corresponding path program 1 times [2024-06-14 13:51:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:40,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864488755] [2024-06-14 13:51:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:40,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:42,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:42,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864488755] [2024-06-14 13:51:42,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864488755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:42,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:42,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:51:42,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996147458] [2024-06-14 13:51:42,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:42,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:51:42,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:51:42,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:51:42,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 13:51:42,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:42,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:42,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 13:51:42,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:42,542 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-14 13:51:42,543 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-14 13:51:42,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 382 events. 213/382 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1339 event pairs, 109 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-14 13:51:42,548 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 13:51:42,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 167 flow [2024-06-14 13:51:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:51:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:51:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-14 13:51:42,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-14 13:51:42,552 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2024-06-14 13:51:42,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 167 flow [2024-06-14 13:51:42,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:51:42,556 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 13:51:42,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-14 13:51:42,557 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 13:51:42,558 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 13:51:42,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:42,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:42,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:42,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:51:42,559 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)] === [2024-06-14 13:51:42,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:42,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1170258078, now seen corresponding path program 1 times [2024-06-14 13:51:42,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:42,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406926018] [2024-06-14 13:51:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:42,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:44,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:44,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406926018] [2024-06-14 13:51:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406926018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:44,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 13:51:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812920744] [2024-06-14 13:51:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:44,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 13:51:44,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 13:51:44,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 13:51:44,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 13:51:44,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:44,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:44,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 13:51:44,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:44,459 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-14 13:51:44,459 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2024-06-14 13:51:44,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 386 events. 215/386 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1365 event pairs, 53 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 958. Up to 320 conditions per place. [2024-06-14 13:51:44,462 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-06-14 13:51:44,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 267 flow [2024-06-14 13:51:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:51:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:51:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-14 13:51:44,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 13:51:44,469 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 80 transitions. [2024-06-14 13:51:44,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 267 flow [2024-06-14 13:51:44,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 52 transitions, 258 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 13:51:44,473 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 164 flow [2024-06-14 13:51:44,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-06-14 13:51:44,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-14 13:51:44,474 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 164 flow [2024-06-14 13:51:44,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:44,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:44,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:44,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:51:44,475 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)] === [2024-06-14 13:51:44,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:44,476 INFO L85 PathProgramCache]: Analyzing trace with hash 663452449, now seen corresponding path program 1 times [2024-06-14 13:51:44,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:44,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933105305] [2024-06-14 13:51:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:44,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:46,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933105305] [2024-06-14 13:51:46,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933105305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:46,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:46,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:51:46,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128991076] [2024-06-14 13:51:46,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:46,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:51:46,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:46,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:51:46,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:51:46,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 13:51:46,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:46,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:46,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 13:51:46,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:46,883 INFO L124 PetriNetUnfolderBase]: 216/389 cut-off events. [2024-06-14 13:51:46,883 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-06-14 13:51:46,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 389 events. 216/389 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1380 event pairs, 28 based on Foata normal form. 6/395 useless extension candidates. Maximal degree in co-relation 1151. Up to 297 conditions per place. [2024-06-14 13:51:46,886 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2024-06-14 13:51:46,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 318 flow [2024-06-14 13:51:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:51:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:51:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-14 13:51:46,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-14 13:51:46,889 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 164 flow. Second operand 6 states and 88 transitions. [2024-06-14 13:51:46,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 318 flow [2024-06-14 13:51:46,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 314 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 13:51:46,894 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 189 flow [2024-06-14 13:51:46,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-06-14 13:51:46,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-14 13:51:46,896 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 189 flow [2024-06-14 13:51:46,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:46,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:46,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:46,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:51:46,897 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)] === [2024-06-14 13:51:46,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash 163026754, now seen corresponding path program 1 times [2024-06-14 13:51:46,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:46,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007210857] [2024-06-14 13:51:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:50,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:50,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007210857] [2024-06-14 13:51:50,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007210857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:50,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:50,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:51:50,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817014465] [2024-06-14 13:51:50,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:50,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:51:50,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:50,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:51:50,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:51:50,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:51:50,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:50,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:50,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:51:50,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:50,485 INFO L124 PetriNetUnfolderBase]: 214/386 cut-off events. [2024-06-14 13:51:50,485 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2024-06-14 13:51:50,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 386 events. 214/386 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1358 event pairs, 77 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 1243. Up to 374 conditions per place. [2024-06-14 13:51:50,488 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 33 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-06-14 13:51:50,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 279 flow [2024-06-14 13:51:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:51:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:51:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-14 13:51:50,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 13:51:50,489 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 189 flow. Second operand 5 states and 56 transitions. [2024-06-14 13:51:50,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 279 flow [2024-06-14 13:51:50,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 248 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 13:51:50,492 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 175 flow [2024-06-14 13:51:50,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-06-14 13:51:50,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-14 13:51:50,493 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 175 flow [2024-06-14 13:51:50,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:50,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:50,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:50,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:51:50,494 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)] === [2024-06-14 13:51:50,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:50,494 INFO L85 PathProgramCache]: Analyzing trace with hash 747764070, now seen corresponding path program 1 times [2024-06-14 13:51:50,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:50,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912641721] [2024-06-14 13:51:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:50,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:53,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:53,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912641721] [2024-06-14 13:51:53,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912641721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:53,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:53,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:51:53,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254222853] [2024-06-14 13:51:53,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:53,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:51:53,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:51:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:51:53,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:51:53,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:53,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:53,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:51:53,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:53,469 INFO L124 PetriNetUnfolderBase]: 212/383 cut-off events. [2024-06-14 13:51:53,469 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-14 13:51:53,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1244 conditions, 383 events. 212/383 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1359 event pairs, 76 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1219. Up to 368 conditions per place. [2024-06-14 13:51:53,473 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-14 13:51:53,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 281 flow [2024-06-14 13:51:53,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:51:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:51:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-14 13:51:53,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 13:51:53,475 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 175 flow. Second operand 6 states and 64 transitions. [2024-06-14 13:51:53,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 281 flow [2024-06-14 13:51:53,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 266 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 13:51:53,477 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 193 flow [2024-06-14 13:51:53,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-14 13:51:53,479 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 13:51:53,479 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 193 flow [2024-06-14 13:51:53,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:53,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:53,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:53,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:51:53,480 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)] === [2024-06-14 13:51:53,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:53,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2032158461, now seen corresponding path program 1 times [2024-06-14 13:51:53,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:53,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507335486] [2024-06-14 13:51:53,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:53,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:56,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:56,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507335486] [2024-06-14 13:51:56,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507335486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:56,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:56,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:51:56,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36123359] [2024-06-14 13:51:56,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:56,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:51:56,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:56,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:51:56,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:51:56,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:51:56,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:56,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:56,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:51:56,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:57,244 INFO L124 PetriNetUnfolderBase]: 211/382 cut-off events. [2024-06-14 13:51:57,244 INFO L125 PetriNetUnfolderBase]: For 1022/1022 co-relation queries the response was YES. [2024-06-14 13:51:57,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 382 events. 211/382 cut-off events. For 1022/1022 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1356 event pairs, 53 based on Foata normal form. 3/385 useless extension candidates. Maximal degree in co-relation 1287. Up to 318 conditions per place. [2024-06-14 13:51:57,247 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-14 13:51:57,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 346 flow [2024-06-14 13:51:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:51:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:51:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-14 13:51:57,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 13:51:57,248 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 193 flow. Second operand 6 states and 74 transitions. [2024-06-14 13:51:57,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 346 flow [2024-06-14 13:51:57,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 329 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 13:51:57,250 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 224 flow [2024-06-14 13:51:57,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-06-14 13:51:57,251 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-14 13:51:57,251 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 224 flow [2024-06-14 13:51:57,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:57,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:57,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:57,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:51:57,252 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)] === [2024-06-14 13:51:57,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:57,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2050102357, now seen corresponding path program 2 times [2024-06-14 13:51:57,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:57,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83771502] [2024-06-14 13:51:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:57,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:00,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:00,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83771502] [2024-06-14 13:52:00,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83771502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:00,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:00,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:52:00,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320332779] [2024-06-14 13:52:00,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:00,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:52:00,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:00,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:52:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:52:00,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:00,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:00,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:00,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:00,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:00,953 INFO L124 PetriNetUnfolderBase]: 206/374 cut-off events. [2024-06-14 13:52:00,953 INFO L125 PetriNetUnfolderBase]: For 1294/1294 co-relation queries the response was YES. [2024-06-14 13:52:00,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 374 events. 206/374 cut-off events. For 1294/1294 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1313 event pairs, 66 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 1319. Up to 311 conditions per place. [2024-06-14 13:52:00,956 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 32 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2024-06-14 13:52:00,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 334 flow [2024-06-14 13:52:00,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:52:00,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:52:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-14 13:52:00,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-14 13:52:00,957 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 224 flow. Second operand 6 states and 71 transitions. [2024-06-14 13:52:00,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 334 flow [2024-06-14 13:52:00,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 319 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 13:52:00,959 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 242 flow [2024-06-14 13:52:00,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-06-14 13:52:00,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-14 13:52:00,960 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 242 flow [2024-06-14 13:52:00,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:00,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:00,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:00,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:52:00,961 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)] === [2024-06-14 13:52:00,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1705851263, now seen corresponding path program 1 times [2024-06-14 13:52:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276173857] [2024-06-14 13:52:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:00,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:04,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:04,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276173857] [2024-06-14 13:52:04,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276173857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:04,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:04,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:04,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482144461] [2024-06-14 13:52:04,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:04,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:04,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:04,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:04,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:04,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 242 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:04,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:04,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:04,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:04,647 INFO L124 PetriNetUnfolderBase]: 204/369 cut-off events. [2024-06-14 13:52:04,648 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2024-06-14 13:52:04,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 369 events. 204/369 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1293 event pairs, 71 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1353. Up to 351 conditions per place. [2024-06-14 13:52:04,649 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-14 13:52:04,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 362 flow [2024-06-14 13:52:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-14 13:52:04,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-14 13:52:04,656 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 242 flow. Second operand 7 states and 72 transitions. [2024-06-14 13:52:04,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 362 flow [2024-06-14 13:52:04,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 316 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 13:52:04,675 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 235 flow [2024-06-14 13:52:04,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-14 13:52:04,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-14 13:52:04,676 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 235 flow [2024-06-14 13:52:04,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:04,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:04,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:04,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:52:04,677 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)] === [2024-06-14 13:52:04,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:04,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1164405607, now seen corresponding path program 1 times [2024-06-14 13:52:04,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:04,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558437984] [2024-06-14 13:52:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:07,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:07,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558437984] [2024-06-14 13:52:07,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558437984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:07,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:07,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:07,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299044796] [2024-06-14 13:52:07,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:07,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:07,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:07,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:07,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:07,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:07,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 235 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:07,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:07,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:07,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:07,989 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-14 13:52:07,989 INFO L125 PetriNetUnfolderBase]: For 1863/1863 co-relation queries the response was YES. [2024-06-14 13:52:07,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 385 events. 213/385 cut-off events. For 1863/1863 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1373 event pairs, 56 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 1423. Up to 314 conditions per place. [2024-06-14 13:52:07,991 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 39 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2024-06-14 13:52:07,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 415 flow [2024-06-14 13:52:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:07,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-14 13:52:07,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-14 13:52:07,993 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 235 flow. Second operand 7 states and 82 transitions. [2024-06-14 13:52:07,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 415 flow [2024-06-14 13:52:07,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 392 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:52:07,996 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 319 flow [2024-06-14 13:52:07,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-14 13:52:07,998 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-14 13:52:07,998 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 319 flow [2024-06-14 13:52:07,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:07,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:07,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:07,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:52:07,999 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)] === [2024-06-14 13:52:07,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:07,999 INFO L85 PathProgramCache]: Analyzing trace with hash -876697211, now seen corresponding path program 2 times [2024-06-14 13:52:07,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:07,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368932802] [2024-06-14 13:52:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:07,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:10,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:10,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368932802] [2024-06-14 13:52:10,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368932802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:10,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:10,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:10,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125862221] [2024-06-14 13:52:10,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:10,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:10,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:10,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:10,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:11,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:11,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:11,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:11,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:11,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:11,322 INFO L124 PetriNetUnfolderBase]: 216/391 cut-off events. [2024-06-14 13:52:11,323 INFO L125 PetriNetUnfolderBase]: For 2315/2317 co-relation queries the response was YES. [2024-06-14 13:52:11,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 391 events. 216/391 cut-off events. For 2315/2317 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1390 event pairs, 63 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1638. Up to 325 conditions per place. [2024-06-14 13:52:11,325 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 19 changer transitions 0/59 dead transitions. [2024-06-14 13:52:11,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 463 flow [2024-06-14 13:52:11,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 13:52:11,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 13:52:11,327 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 319 flow. Second operand 7 states and 79 transitions. [2024-06-14 13:52:11,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 463 flow [2024-06-14 13:52:11,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 442 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 13:52:11,330 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 359 flow [2024-06-14 13:52:11,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-14 13:52:11,331 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-14 13:52:11,331 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 359 flow [2024-06-14 13:52:11,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:11,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:11,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:11,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:52:11,332 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)] === [2024-06-14 13:52:11,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:11,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1341774277, now seen corresponding path program 3 times [2024-06-14 13:52:11,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:11,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882150792] [2024-06-14 13:52:11,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:11,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:14,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:14,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882150792] [2024-06-14 13:52:14,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882150792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:14,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:14,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:14,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496370763] [2024-06-14 13:52:14,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:14,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:14,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:14,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:14,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 359 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:14,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:14,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:14,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:14,505 INFO L124 PetriNetUnfolderBase]: 219/396 cut-off events. [2024-06-14 13:52:14,506 INFO L125 PetriNetUnfolderBase]: For 2846/2848 co-relation queries the response was YES. [2024-06-14 13:52:14,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 396 events. 219/396 cut-off events. For 2846/2848 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1417 event pairs, 62 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 1729. Up to 311 conditions per place. [2024-06-14 13:52:14,508 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 36 selfloop transitions, 27 changer transitions 0/65 dead transitions. [2024-06-14 13:52:14,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 563 flow [2024-06-14 13:52:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:14,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 13:52:14,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-14 13:52:14,510 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 359 flow. Second operand 7 states and 83 transitions. [2024-06-14 13:52:14,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 563 flow [2024-06-14 13:52:14,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 518 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 13:52:14,515 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 424 flow [2024-06-14 13:52:14,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-14 13:52:14,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 13:52:14,516 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 424 flow [2024-06-14 13:52:14,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:14,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:14,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:14,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:52:14,516 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)] === [2024-06-14 13:52:14,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1236624323, now seen corresponding path program 1 times [2024-06-14 13:52:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:14,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885364500] [2024-06-14 13:52:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:14,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:19,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:19,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885364500] [2024-06-14 13:52:19,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885364500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:19,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:19,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:19,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219639605] [2024-06-14 13:52:19,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:19,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:19,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:19,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:19,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:19,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:19,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:19,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:19,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:19,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:20,047 INFO L124 PetriNetUnfolderBase]: 217/391 cut-off events. [2024-06-14 13:52:20,047 INFO L125 PetriNetUnfolderBase]: For 3237/3237 co-relation queries the response was YES. [2024-06-14 13:52:20,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 391 events. 217/391 cut-off events. For 3237/3237 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1373 event pairs, 48 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1828. Up to 370 conditions per place. [2024-06-14 13:52:20,050 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2024-06-14 13:52:20,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 582 flow [2024-06-14 13:52:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:52:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:52:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-14 13:52:20,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 13:52:20,051 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 424 flow. Second operand 8 states and 80 transitions. [2024-06-14 13:52:20,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 582 flow [2024-06-14 13:52:20,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 543 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 13:52:20,058 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 430 flow [2024-06-14 13:52:20,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=430, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-06-14 13:52:20,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-14 13:52:20,059 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 430 flow [2024-06-14 13:52:20,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:20,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:20,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:20,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:52:20,060 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)] === [2024-06-14 13:52:20,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:20,060 INFO L85 PathProgramCache]: Analyzing trace with hash 970697103, now seen corresponding path program 1 times [2024-06-14 13:52:20,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:20,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68173489] [2024-06-14 13:52:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68173489] [2024-06-14 13:52:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68173489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:22,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:22,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:22,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135886890] [2024-06-14 13:52:22,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:22,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:22,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:22,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:22,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:22,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 430 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:22,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:22,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:22,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:23,051 INFO L124 PetriNetUnfolderBase]: 223/402 cut-off events. [2024-06-14 13:52:23,052 INFO L125 PetriNetUnfolderBase]: For 3780/3780 co-relation queries the response was YES. [2024-06-14 13:52:23,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1969 conditions, 402 events. 223/402 cut-off events. For 3780/3780 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1442 event pairs, 55 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 1932. Up to 334 conditions per place. [2024-06-14 13:52:23,054 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 20 changer transitions 0/74 dead transitions. [2024-06-14 13:52:23,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 74 transitions, 630 flow [2024-06-14 13:52:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-14 13:52:23,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 13:52:23,055 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 430 flow. Second operand 7 states and 84 transitions. [2024-06-14 13:52:23,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 74 transitions, 630 flow [2024-06-14 13:52:23,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 601 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:52:23,059 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 468 flow [2024-06-14 13:52:23,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-06-14 13:52:23,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-14 13:52:23,060 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 468 flow [2024-06-14 13:52:23,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:23,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:23,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:23,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:52:23,061 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)] === [2024-06-14 13:52:23,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:23,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1305888034, now seen corresponding path program 1 times [2024-06-14 13:52:23,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:23,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426879789] [2024-06-14 13:52:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:23,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426879789] [2024-06-14 13:52:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426879789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:26,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:26,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224781297] [2024-06-14 13:52:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:26,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:26,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:26,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 468 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:26,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:26,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:26,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:26,901 INFO L124 PetriNetUnfolderBase]: 232/417 cut-off events. [2024-06-14 13:52:26,901 INFO L125 PetriNetUnfolderBase]: For 4449/4449 co-relation queries the response was YES. [2024-06-14 13:52:26,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 417 events. 232/417 cut-off events. For 4449/4449 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1519 event pairs, 53 based on Foata normal form. 3/420 useless extension candidates. Maximal degree in co-relation 2088. Up to 335 conditions per place. [2024-06-14 13:52:26,904 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 51 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2024-06-14 13:52:26,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 680 flow [2024-06-14 13:52:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:52:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:52:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 13:52:26,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 13:52:26,906 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 468 flow. Second operand 8 states and 92 transitions. [2024-06-14 13:52:26,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 680 flow [2024-06-14 13:52:26,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 627 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 13:52:26,912 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 499 flow [2024-06-14 13:52:26,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=499, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-14 13:52:26,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-14 13:52:26,913 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 499 flow [2024-06-14 13:52:26,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:26,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:26,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:26,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:52:26,914 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)] === [2024-06-14 13:52:26,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1305887817, now seen corresponding path program 2 times [2024-06-14 13:52:26,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:26,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987237161] [2024-06-14 13:52:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:26,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:30,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:30,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987237161] [2024-06-14 13:52:30,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987237161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:30,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:30,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:30,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396702777] [2024-06-14 13:52:30,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:30,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:30,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:30,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:30,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:30,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:30,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 499 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:30,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:30,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:30,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:30,697 INFO L124 PetriNetUnfolderBase]: 238/427 cut-off events. [2024-06-14 13:52:30,698 INFO L125 PetriNetUnfolderBase]: For 4968/4968 co-relation queries the response was YES. [2024-06-14 13:52:30,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 427 events. 238/427 cut-off events. For 4968/4968 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1565 event pairs, 53 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 2224. Up to 339 conditions per place. [2024-06-14 13:52:30,701 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 23 changer transitions 0/77 dead transitions. [2024-06-14 13:52:30,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 709 flow [2024-06-14 13:52:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:30,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-14 13:52:30,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-14 13:52:30,705 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 499 flow. Second operand 7 states and 82 transitions. [2024-06-14 13:52:30,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 709 flow [2024-06-14 13:52:30,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 647 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 13:52:30,712 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 517 flow [2024-06-14 13:52:30,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-06-14 13:52:30,713 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-14 13:52:30,713 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 517 flow [2024-06-14 13:52:30,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:30,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:30,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:30,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:52:30,714 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)] === [2024-06-14 13:52:30,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash -768246524, now seen corresponding path program 2 times [2024-06-14 13:52:30,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:30,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145841397] [2024-06-14 13:52:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:30,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:34,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:34,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145841397] [2024-06-14 13:52:34,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145841397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:34,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:34,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:34,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015377048] [2024-06-14 13:52:34,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:34,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:34,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:34,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:34,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 517 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:34,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:34,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:34,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:34,433 INFO L124 PetriNetUnfolderBase]: 241/431 cut-off events. [2024-06-14 13:52:34,433 INFO L125 PetriNetUnfolderBase]: For 5462/5462 co-relation queries the response was YES. [2024-06-14 13:52:34,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 431 events. 241/431 cut-off events. For 5462/5462 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1562 event pairs, 48 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 2302. Up to 410 conditions per place. [2024-06-14 13:52:34,437 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 61 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-06-14 13:52:34,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 701 flow [2024-06-14 13:52:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:52:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:52:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-14 13:52:34,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 13:52:34,438 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 517 flow. Second operand 8 states and 80 transitions. [2024-06-14 13:52:34,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 701 flow [2024-06-14 13:52:34,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 639 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 13:52:34,454 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 508 flow [2024-06-14 13:52:34,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-06-14 13:52:34,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-14 13:52:34,455 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 508 flow [2024-06-14 13:52:34,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:34,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:34,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:34,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:52:34,456 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)] === [2024-06-14 13:52:34,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:34,457 INFO L85 PathProgramCache]: Analyzing trace with hash 319076239, now seen corresponding path program 3 times [2024-06-14 13:52:34,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114953560] [2024-06-14 13:52:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:37,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:37,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114953560] [2024-06-14 13:52:37,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114953560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:37,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:37,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:37,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531751167] [2024-06-14 13:52:37,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:37,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:37,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:37,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:37,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:37,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:37,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 508 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:37,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:37,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:37,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:37,581 INFO L124 PetriNetUnfolderBase]: 242/435 cut-off events. [2024-06-14 13:52:37,581 INFO L125 PetriNetUnfolderBase]: For 6168/6170 co-relation queries the response was YES. [2024-06-14 13:52:37,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 435 events. 242/435 cut-off events. For 6168/6170 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1605 event pairs, 64 based on Foata normal form. 2/437 useless extension candidates. Maximal degree in co-relation 2308. Up to 326 conditions per place. [2024-06-14 13:52:37,584 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 52 selfloop transitions, 27 changer transitions 0/81 dead transitions. [2024-06-14 13:52:37,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 786 flow [2024-06-14 13:52:37,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 13:52:37,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-14 13:52:37,585 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 508 flow. Second operand 7 states and 81 transitions. [2024-06-14 13:52:37,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 786 flow [2024-06-14 13:52:37,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 81 transitions, 749 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 13:52:37,591 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 590 flow [2024-06-14 13:52:37,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2024-06-14 13:52:37,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-14 13:52:37,591 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 590 flow [2024-06-14 13:52:37,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:37,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:37,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:37,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:52:37,592 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)] === [2024-06-14 13:52:37,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:37,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1407808192, now seen corresponding path program 3 times [2024-06-14 13:52:37,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:37,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461330869] [2024-06-14 13:52:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:37,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:40,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:40,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461330869] [2024-06-14 13:52:40,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461330869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:40,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:40,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:40,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525940530] [2024-06-14 13:52:40,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:40,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:40,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:40,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:40,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:40,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:40,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:40,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:41,309 INFO L124 PetriNetUnfolderBase]: 245/441 cut-off events. [2024-06-14 13:52:41,310 INFO L125 PetriNetUnfolderBase]: For 6762/6762 co-relation queries the response was YES. [2024-06-14 13:52:41,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 441 events. 245/441 cut-off events. For 6762/6762 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1630 event pairs, 53 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2434. Up to 371 conditions per place. [2024-06-14 13:52:41,315 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 23 changer transitions 0/85 dead transitions. [2024-06-14 13:52:41,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 85 transitions, 832 flow [2024-06-14 13:52:41,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:52:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:52:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 13:52:41,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 13:52:41,318 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 590 flow. Second operand 9 states and 96 transitions. [2024-06-14 13:52:41,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 85 transitions, 832 flow [2024-06-14 13:52:41,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 787 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-14 13:52:41,327 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 642 flow [2024-06-14 13:52:41,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=642, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-06-14 13:52:41,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-14 13:52:41,328 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 642 flow [2024-06-14 13:52:41,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:41,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:41,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:41,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:52:41,329 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)] === [2024-06-14 13:52:41,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:41,330 INFO L85 PathProgramCache]: Analyzing trace with hash 319076456, now seen corresponding path program 4 times [2024-06-14 13:52:41,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:41,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067298587] [2024-06-14 13:52:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:41,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:44,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:44,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067298587] [2024-06-14 13:52:44,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067298587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:44,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:44,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:52:44,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079178757] [2024-06-14 13:52:44,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:44,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:52:44,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:44,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:52:44,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:52:44,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 13:52:44,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 642 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:44,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:44,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 13:52:44,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:44,472 INFO L124 PetriNetUnfolderBase]: 243/437 cut-off events. [2024-06-14 13:52:44,472 INFO L125 PetriNetUnfolderBase]: For 7076/7078 co-relation queries the response was YES. [2024-06-14 13:52:44,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 437 events. 243/437 cut-off events. For 7076/7078 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1606 event pairs, 59 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2459. Up to 349 conditions per place. [2024-06-14 13:52:44,476 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 29 changer transitions 0/86 dead transitions. [2024-06-14 13:52:44,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 900 flow [2024-06-14 13:52:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:44,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-14 13:52:44,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-14 13:52:44,479 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 642 flow. Second operand 7 states and 93 transitions. [2024-06-14 13:52:44,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 900 flow [2024-06-14 13:52:44,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 850 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 13:52:44,486 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 687 flow [2024-06-14 13:52:44,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=687, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-06-14 13:52:44,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-14 13:52:44,486 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 687 flow [2024-06-14 13:52:44,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:44,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:44,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:44,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:52:44,487 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)] === [2024-06-14 13:52:44,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:44,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1354391970, now seen corresponding path program 1 times [2024-06-14 13:52:44,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:44,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918468408] [2024-06-14 13:52:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:44,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:49,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:49,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918468408] [2024-06-14 13:52:49,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918468408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:49,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:49,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:52:49,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397167308] [2024-06-14 13:52:49,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:49,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:52:49,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:49,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:52:49,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:52:49,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:49,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 687 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:49,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:49,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:49,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:50,279 INFO L124 PetriNetUnfolderBase]: 241/432 cut-off events. [2024-06-14 13:52:50,279 INFO L125 PetriNetUnfolderBase]: For 7586/7586 co-relation queries the response was YES. [2024-06-14 13:52:50,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 432 events. 241/432 cut-off events. For 7586/7586 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1578 event pairs, 47 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2495. Up to 408 conditions per place. [2024-06-14 13:52:50,295 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-14 13:52:50,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 896 flow [2024-06-14 13:52:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:52:50,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:52:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-14 13:52:50,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-14 13:52:50,297 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 687 flow. Second operand 9 states and 88 transitions. [2024-06-14 13:52:50,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 896 flow [2024-06-14 13:52:50,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 88 transitions, 817 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 13:52:50,304 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 659 flow [2024-06-14 13:52:50,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=659, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-06-14 13:52:50,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-14 13:52:50,306 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 659 flow [2024-06-14 13:52:50,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:50,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:50,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:50,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:52:50,307 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)] === [2024-06-14 13:52:50,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2110958390, now seen corresponding path program 1 times [2024-06-14 13:52:50,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:50,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357396887] [2024-06-14 13:52:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:50,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:53,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:53,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357396887] [2024-06-14 13:52:53,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357396887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:53,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:53,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:52:53,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914127543] [2024-06-14 13:52:53,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:53,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:52:53,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:53,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:52:53,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:52:53,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:53,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 659 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:53,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:53,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:53,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:53,964 INFO L124 PetriNetUnfolderBase]: 245/440 cut-off events. [2024-06-14 13:52:53,964 INFO L125 PetriNetUnfolderBase]: For 8263/8263 co-relation queries the response was YES. [2024-06-14 13:52:53,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2562 conditions, 440 events. 245/440 cut-off events. For 8263/8263 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1638 event pairs, 26 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2514. Up to 338 conditions per place. [2024-06-14 13:52:53,968 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 73 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2024-06-14 13:52:53,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 92 transitions, 918 flow [2024-06-14 13:52:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 13:52:53,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 13:52:53,969 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 659 flow. Second operand 7 states and 79 transitions. [2024-06-14 13:52:53,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 92 transitions, 918 flow [2024-06-14 13:52:53,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 883 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 13:52:53,976 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 668 flow [2024-06-14 13:52:53,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=668, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-14 13:52:53,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-14 13:52:53,977 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 668 flow [2024-06-14 13:52:53,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:53,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:53,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:53,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:52:53,977 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)] === [2024-06-14 13:52:53,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash 743805852, now seen corresponding path program 1 times [2024-06-14 13:52:53,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:53,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495781519] [2024-06-14 13:52:53,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:53,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:52:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:52:56,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:52:56,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495781519] [2024-06-14 13:52:56,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495781519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:52:56,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:52:56,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:52:56,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117170789] [2024-06-14 13:52:56,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:52:56,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:52:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:52:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:52:56,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:52:56,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:52:56,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 668 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:56,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:52:56,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:52:56,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:52:57,253 INFO L124 PetriNetUnfolderBase]: 243/437 cut-off events. [2024-06-14 13:52:57,253 INFO L125 PetriNetUnfolderBase]: For 8503/8503 co-relation queries the response was YES. [2024-06-14 13:52:57,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 437 events. 243/437 cut-off events. For 8503/8503 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1624 event pairs, 43 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2525. Up to 364 conditions per place. [2024-06-14 13:52:57,256 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 22 changer transitions 0/90 dead transitions. [2024-06-14 13:52:57,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 875 flow [2024-06-14 13:52:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:52:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:52:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 13:52:57,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-14 13:52:57,258 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 668 flow. Second operand 7 states and 83 transitions. [2024-06-14 13:52:57,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 875 flow [2024-06-14 13:52:57,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 843 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 13:52:57,266 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 689 flow [2024-06-14 13:52:57,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=689, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-14 13:52:57,266 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 13:52:57,266 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 689 flow [2024-06-14 13:52:57,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:52:57,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:52:57,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:52:57,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:52:57,267 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)] === [2024-06-14 13:52:57,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:52:57,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1709552616, now seen corresponding path program 2 times [2024-06-14 13:52:57,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:52:57,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469294663] [2024-06-14 13:52:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:52:57,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:52:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:00,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469294663] [2024-06-14 13:53:00,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469294663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:00,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:00,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:53:00,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641345970] [2024-06-14 13:53:00,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:00,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:53:00,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:00,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:53:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:53:00,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:00,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 689 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:00,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:00,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:00,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:01,082 INFO L124 PetriNetUnfolderBase]: 240/432 cut-off events. [2024-06-14 13:53:01,082 INFO L125 PetriNetUnfolderBase]: For 8957/8957 co-relation queries the response was YES. [2024-06-14 13:53:01,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 432 events. 240/432 cut-off events. For 8957/8957 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1592 event pairs, 44 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 2515. Up to 365 conditions per place. [2024-06-14 13:53:01,085 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 70 selfloop transitions, 18 changer transitions 0/90 dead transitions. [2024-06-14 13:53:01,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 90 transitions, 892 flow [2024-06-14 13:53:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:53:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:53:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 13:53:01,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-14 13:53:01,086 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 689 flow. Second operand 7 states and 81 transitions. [2024-06-14 13:53:01,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 90 transitions, 892 flow [2024-06-14 13:53:01,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 826 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 13:53:01,097 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 663 flow [2024-06-14 13:53:01,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=663, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-14 13:53:01,097 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 13:53:01,097 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 663 flow [2024-06-14 13:53:01,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:01,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:01,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:01,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 13:53:01,098 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)] === [2024-06-14 13:53:01,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1827640420, now seen corresponding path program 2 times [2024-06-14 13:53:01,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:01,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021185063] [2024-06-14 13:53:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:01,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:03,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:03,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021185063] [2024-06-14 13:53:03,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021185063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:03,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:03,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:53:03,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415851809] [2024-06-14 13:53:03,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:03,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:53:03,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:03,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:53:03,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:53:04,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:04,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 663 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:04,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:04,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:04,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:04,325 INFO L124 PetriNetUnfolderBase]: 238/429 cut-off events. [2024-06-14 13:53:04,325 INFO L125 PetriNetUnfolderBase]: For 9027/9027 co-relation queries the response was YES. [2024-06-14 13:53:04,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2499 conditions, 429 events. 238/429 cut-off events. For 9027/9027 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1571 event pairs, 44 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2449. Up to 359 conditions per place. [2024-06-14 13:53:04,328 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2024-06-14 13:53:04,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 887 flow [2024-06-14 13:53:04,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:53:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:53:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-14 13:53:04,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-14 13:53:04,330 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 663 flow. Second operand 7 states and 85 transitions. [2024-06-14 13:53:04,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 887 flow [2024-06-14 13:53:04,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 843 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 13:53:04,339 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 671 flow [2024-06-14 13:53:04,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=671, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-14 13:53:04,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-14 13:53:04,339 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 671 flow [2024-06-14 13:53:04,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:04,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:04,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:04,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 13:53:04,341 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)] === [2024-06-14 13:53:04,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:04,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1827824746, now seen corresponding path program 1 times [2024-06-14 13:53:04,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:04,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397067570] [2024-06-14 13:53:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:04,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:07,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:07,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397067570] [2024-06-14 13:53:07,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397067570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:07,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:07,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:53:07,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880873718] [2024-06-14 13:53:07,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:07,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:53:07,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:07,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:53:07,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:53:07,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:07,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 671 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:07,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:07,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:07,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:07,844 INFO L124 PetriNetUnfolderBase]: 254/456 cut-off events. [2024-06-14 13:53:07,844 INFO L125 PetriNetUnfolderBase]: For 10784/10784 co-relation queries the response was YES. [2024-06-14 13:53:07,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2724 conditions, 456 events. 254/456 cut-off events. For 10784/10784 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1704 event pairs, 48 based on Foata normal form. 2/458 useless extension candidates. Maximal degree in co-relation 2673. Up to 331 conditions per place. [2024-06-14 13:53:07,854 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 31 changer transitions 0/98 dead transitions. [2024-06-14 13:53:07,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 98 transitions, 1008 flow [2024-06-14 13:53:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:53:07,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:53:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 13:53:07,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-14 13:53:07,858 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 671 flow. Second operand 8 states and 93 transitions. [2024-06-14 13:53:07,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 98 transitions, 1008 flow [2024-06-14 13:53:07,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 906 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 13:53:07,867 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 689 flow [2024-06-14 13:53:07,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-06-14 13:53:07,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-14 13:53:07,868 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 689 flow [2024-06-14 13:53:07,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:07,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:07,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:07,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 13:53:07,869 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)] === [2024-06-14 13:53:07,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1992805300, now seen corresponding path program 2 times [2024-06-14 13:53:07,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:07,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465358890] [2024-06-14 13:53:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:10,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465358890] [2024-06-14 13:53:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465358890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:53:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326279276] [2024-06-14 13:53:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:10,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:53:10,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:53:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:53:10,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:10,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 689 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:10,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:10,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:10,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:11,221 INFO L124 PetriNetUnfolderBase]: 260/466 cut-off events. [2024-06-14 13:53:11,221 INFO L125 PetriNetUnfolderBase]: For 11672/11672 co-relation queries the response was YES. [2024-06-14 13:53:11,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 466 events. 260/466 cut-off events. For 11672/11672 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1755 event pairs, 53 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 2748. Up to 390 conditions per place. [2024-06-14 13:53:11,224 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 23 changer transitions 0/101 dead transitions. [2024-06-14 13:53:11,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 101 transitions, 965 flow [2024-06-14 13:53:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:53:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:53:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 13:53:11,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-14 13:53:11,226 INFO L175 Difference]: Start difference. First operand has 97 places, 84 transitions, 689 flow. Second operand 8 states and 93 transitions. [2024-06-14 13:53:11,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 101 transitions, 965 flow [2024-06-14 13:53:11,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 911 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 13:53:11,236 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 718 flow [2024-06-14 13:53:11,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=718, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2024-06-14 13:53:11,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-14 13:53:11,237 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 718 flow [2024-06-14 13:53:11,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:11,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:11,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:11,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 13:53:11,238 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)] === [2024-06-14 13:53:11,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:11,238 INFO L85 PathProgramCache]: Analyzing trace with hash 859396916, now seen corresponding path program 1 times [2024-06-14 13:53:11,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:11,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8383557] [2024-06-14 13:53:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:11,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:16,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:16,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8383557] [2024-06-14 13:53:16,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8383557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:16,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:16,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:16,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237397900] [2024-06-14 13:53:16,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:16,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:16,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:16,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:16,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:16,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 718 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:16,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:16,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:16,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:16,716 INFO L124 PetriNetUnfolderBase]: 269/481 cut-off events. [2024-06-14 13:53:16,717 INFO L125 PetriNetUnfolderBase]: For 12839/12839 co-relation queries the response was YES. [2024-06-14 13:53:16,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 481 events. 269/481 cut-off events. For 12839/12839 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1849 event pairs, 52 based on Foata normal form. 3/484 useless extension candidates. Maximal degree in co-relation 2866. Up to 388 conditions per place. [2024-06-14 13:53:16,721 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 74 selfloop transitions, 27 changer transitions 0/103 dead transitions. [2024-06-14 13:53:16,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 1005 flow [2024-06-14 13:53:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:16,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 13:53:16,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 13:53:16,723 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 718 flow. Second operand 9 states and 102 transitions. [2024-06-14 13:53:16,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 1005 flow [2024-06-14 13:53:16,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 103 transitions, 944 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 13:53:16,734 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 761 flow [2024-06-14 13:53:16,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=761, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2024-06-14 13:53:16,739 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-14 13:53:16,739 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 761 flow [2024-06-14 13:53:16,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:16,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:16,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:16,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 13:53:16,740 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)] === [2024-06-14 13:53:16,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:16,740 INFO L85 PathProgramCache]: Analyzing trace with hash -809858954, now seen corresponding path program 3 times [2024-06-14 13:53:16,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:16,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530334670] [2024-06-14 13:53:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:16,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:19,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530334670] [2024-06-14 13:53:19,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530334670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:19,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:19,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:53:19,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803016971] [2024-06-14 13:53:19,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:19,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:53:19,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:19,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:53:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:53:20,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:20,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 761 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:20,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:20,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:20,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:20,353 INFO L124 PetriNetUnfolderBase]: 265/475 cut-off events. [2024-06-14 13:53:20,354 INFO L125 PetriNetUnfolderBase]: For 12312/12312 co-relation queries the response was YES. [2024-06-14 13:53:20,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 475 events. 265/475 cut-off events. For 12312/12312 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1805 event pairs, 46 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2847. Up to 379 conditions per place. [2024-06-14 13:53:20,358 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 74 selfloop transitions, 26 changer transitions 0/102 dead transitions. [2024-06-14 13:53:20,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 102 transitions, 1006 flow [2024-06-14 13:53:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:53:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:53:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 13:53:20,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-14 13:53:20,360 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 761 flow. Second operand 8 states and 91 transitions. [2024-06-14 13:53:20,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 102 transitions, 1006 flow [2024-06-14 13:53:20,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 912 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 13:53:20,375 INFO L231 Difference]: Finished difference. Result has 105 places, 89 transitions, 724 flow [2024-06-14 13:53:20,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2024-06-14 13:53:20,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-14 13:53:20,376 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 724 flow [2024-06-14 13:53:20,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:20,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:20,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:20,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 13:53:20,376 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)] === [2024-06-14 13:53:20,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:20,377 INFO L85 PathProgramCache]: Analyzing trace with hash 165900496, now seen corresponding path program 2 times [2024-06-14 13:53:20,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:20,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744274853] [2024-06-14 13:53:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:20,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:25,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744274853] [2024-06-14 13:53:25,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744274853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:25,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:25,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:25,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307897674] [2024-06-14 13:53:25,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:25,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:25,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:25,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:25,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:25,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:25,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 724 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:25,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:25,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:25,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:25,791 INFO L124 PetriNetUnfolderBase]: 268/481 cut-off events. [2024-06-14 13:53:25,792 INFO L125 PetriNetUnfolderBase]: For 12924/12926 co-relation queries the response was YES. [2024-06-14 13:53:25,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 481 events. 268/481 cut-off events. For 12924/12926 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1827 event pairs, 61 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2864. Up to 409 conditions per place. [2024-06-14 13:53:25,795 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 73 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2024-06-14 13:53:25,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 964 flow [2024-06-14 13:53:25,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 13:53:25,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-14 13:53:25,796 INFO L175 Difference]: Start difference. First operand has 105 places, 89 transitions, 724 flow. Second operand 9 states and 95 transitions. [2024-06-14 13:53:25,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 964 flow [2024-06-14 13:53:25,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 99 transitions, 892 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 13:53:25,809 INFO L231 Difference]: Finished difference. Result has 107 places, 91 transitions, 737 flow [2024-06-14 13:53:25,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=737, PETRI_PLACES=107, PETRI_TRANSITIONS=91} [2024-06-14 13:53:25,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-14 13:53:25,810 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 737 flow [2024-06-14 13:53:25,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:25,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:25,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:25,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 13:53:25,810 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)] === [2024-06-14 13:53:25,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:25,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1301430390, now seen corresponding path program 4 times [2024-06-14 13:53:25,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:25,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643371064] [2024-06-14 13:53:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:25,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:29,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643371064] [2024-06-14 13:53:29,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643371064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:29,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:29,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:53:29,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440772136] [2024-06-14 13:53:29,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:29,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:53:29,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:29,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:53:29,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:53:29,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:29,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 91 transitions, 737 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:29,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:29,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:29,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:29,451 INFO L124 PetriNetUnfolderBase]: 274/491 cut-off events. [2024-06-14 13:53:29,451 INFO L125 PetriNetUnfolderBase]: For 14275/14277 co-relation queries the response was YES. [2024-06-14 13:53:29,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 491 events. 274/491 cut-off events. For 14275/14277 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1907 event pairs, 58 based on Foata normal form. 2/493 useless extension candidates. Maximal degree in co-relation 2935. Up to 376 conditions per place. [2024-06-14 13:53:29,455 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 30 changer transitions 0/103 dead transitions. [2024-06-14 13:53:29,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 1003 flow [2024-06-14 13:53:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:53:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:53:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 13:53:29,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 13:53:29,456 INFO L175 Difference]: Start difference. First operand has 107 places, 91 transitions, 737 flow. Second operand 8 states and 89 transitions. [2024-06-14 13:53:29,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 1003 flow [2024-06-14 13:53:29,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 934 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 13:53:29,469 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 767 flow [2024-06-14 13:53:29,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=767, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-06-14 13:53:29,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-14 13:53:29,470 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 767 flow [2024-06-14 13:53:29,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:29,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:29,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:29,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 13:53:29,471 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)] === [2024-06-14 13:53:29,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:29,471 INFO L85 PathProgramCache]: Analyzing trace with hash -686123278, now seen corresponding path program 3 times [2024-06-14 13:53:29,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:29,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762402060] [2024-06-14 13:53:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:29,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:34,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762402060] [2024-06-14 13:53:34,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762402060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:34,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:34,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:34,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147259324] [2024-06-14 13:53:34,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:34,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:34,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:34,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:34,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:34,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:34,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 767 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:34,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:34,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:34,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:34,975 INFO L124 PetriNetUnfolderBase]: 277/496 cut-off events. [2024-06-14 13:53:34,975 INFO L125 PetriNetUnfolderBase]: For 14739/14741 co-relation queries the response was YES. [2024-06-14 13:53:34,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 496 events. 277/496 cut-off events. For 14739/14741 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1912 event pairs, 59 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 3036. Up to 406 conditions per place. [2024-06-14 13:53:34,978 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 70 selfloop transitions, 32 changer transitions 0/104 dead transitions. [2024-06-14 13:53:34,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 104 transitions, 1027 flow [2024-06-14 13:53:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 13:53:34,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-14 13:53:34,981 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 767 flow. Second operand 9 states and 98 transitions. [2024-06-14 13:53:34,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 104 transitions, 1027 flow [2024-06-14 13:53:34,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 104 transitions, 944 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 13:53:34,998 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 789 flow [2024-06-14 13:53:34,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=789, PETRI_PLACES=111, PETRI_TRANSITIONS=95} [2024-06-14 13:53:34,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 13:53:34,999 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 789 flow [2024-06-14 13:53:34,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:35,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:35,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:35,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 13:53:35,000 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)] === [2024-06-14 13:53:35,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:35,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1309711110, now seen corresponding path program 5 times [2024-06-14 13:53:35,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:35,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455024737] [2024-06-14 13:53:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:35,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:38,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:38,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455024737] [2024-06-14 13:53:38,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455024737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:38,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:38,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:53:38,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255385836] [2024-06-14 13:53:38,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:38,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:53:38,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:53:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:53:38,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:38,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 95 transitions, 789 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:38,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:38,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:38,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:38,405 INFO L124 PetriNetUnfolderBase]: 283/504 cut-off events. [2024-06-14 13:53:38,405 INFO L125 PetriNetUnfolderBase]: For 16109/16109 co-relation queries the response was YES. [2024-06-14 13:53:38,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 504 events. 283/504 cut-off events. For 16109/16109 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1961 event pairs, 50 based on Foata normal form. 2/506 useless extension candidates. Maximal degree in co-relation 3123. Up to 477 conditions per place. [2024-06-14 13:53:38,408 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 91 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2024-06-14 13:53:38,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 106 transitions, 1058 flow [2024-06-14 13:53:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:53:38,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:53:38,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 13:53:38,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-14 13:53:38,410 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 789 flow. Second operand 8 states and 82 transitions. [2024-06-14 13:53:38,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 106 transitions, 1058 flow [2024-06-14 13:53:38,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 106 transitions, 969 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 13:53:38,426 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 769 flow [2024-06-14 13:53:38,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=769, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-14 13:53:38,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-14 13:53:38,426 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 769 flow [2024-06-14 13:53:38,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:38,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:38,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:38,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 13:53:38,427 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)] === [2024-06-14 13:53:38,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash -456204028, now seen corresponding path program 4 times [2024-06-14 13:53:38,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:38,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997701110] [2024-06-14 13:53:38,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:38,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:42,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997701110] [2024-06-14 13:53:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997701110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:42,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:42,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311312192] [2024-06-14 13:53:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:42,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:42,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:42,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:42,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 769 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:42,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:42,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:42,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:42,758 INFO L124 PetriNetUnfolderBase]: 296/525 cut-off events. [2024-06-14 13:53:42,758 INFO L125 PetriNetUnfolderBase]: For 17719/17719 co-relation queries the response was YES. [2024-06-14 13:53:42,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3392 conditions, 525 events. 296/525 cut-off events. For 17719/17719 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2047 event pairs, 49 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 3334. Up to 480 conditions per place. [2024-06-14 13:53:42,761 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-06-14 13:53:42,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 115 transitions, 1260 flow [2024-06-14 13:53:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 13:53:42,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-14 13:53:42,763 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 769 flow. Second operand 9 states and 95 transitions. [2024-06-14 13:53:42,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 115 transitions, 1260 flow [2024-06-14 13:53:42,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 1207 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 13:53:42,782 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 875 flow [2024-06-14 13:53:42,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=875, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-14 13:53:42,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 13:53:42,783 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 875 flow [2024-06-14 13:53:42,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:42,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:42,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:42,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 13:53:42,783 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)] === [2024-06-14 13:53:42,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:42,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1310008028, now seen corresponding path program 5 times [2024-06-14 13:53:42,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:42,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565527483] [2024-06-14 13:53:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:47,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:47,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565527483] [2024-06-14 13:53:47,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565527483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:47,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:47,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:53:47,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580508231] [2024-06-14 13:53:47,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:47,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:53:47,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:53:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:53:47,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:47,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 875 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:47,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:47,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:47,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:47,481 INFO L124 PetriNetUnfolderBase]: 297/527 cut-off events. [2024-06-14 13:53:47,481 INFO L125 PetriNetUnfolderBase]: For 18595/18595 co-relation queries the response was YES. [2024-06-14 13:53:47,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 527 events. 297/527 cut-off events. For 18595/18595 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2060 event pairs, 49 based on Foata normal form. 2/529 useless extension candidates. Maximal degree in co-relation 3366. Up to 493 conditions per place. [2024-06-14 13:53:47,484 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 96 selfloop transitions, 18 changer transitions 0/116 dead transitions. [2024-06-14 13:53:47,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 116 transitions, 1230 flow [2024-06-14 13:53:47,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:53:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:53:47,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 13:53:47,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-14 13:53:47,491 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 875 flow. Second operand 9 states and 92 transitions. [2024-06-14 13:53:47,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 116 transitions, 1230 flow [2024-06-14 13:53:47,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 116 transitions, 1151 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-14 13:53:47,513 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 884 flow [2024-06-14 13:53:47,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=884, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2024-06-14 13:53:47,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-14 13:53:47,513 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 884 flow [2024-06-14 13:53:47,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:47,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:47,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:47,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 13:53:47,514 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)] === [2024-06-14 13:53:47,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1301436900, now seen corresponding path program 6 times [2024-06-14 13:53:47,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:47,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979879115] [2024-06-14 13:53:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:47,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:51,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979879115] [2024-06-14 13:53:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979879115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:51,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:51,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:53:51,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598468025] [2024-06-14 13:53:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:51,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:53:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:53:51,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:53:51,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:51,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 884 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:51,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:51,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:51,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:51,365 INFO L124 PetriNetUnfolderBase]: 298/531 cut-off events. [2024-06-14 13:53:51,365 INFO L125 PetriNetUnfolderBase]: For 19259/19261 co-relation queries the response was YES. [2024-06-14 13:53:51,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3421 conditions, 531 events. 298/531 cut-off events. For 19259/19261 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2109 event pairs, 58 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 3359. Up to 407 conditions per place. [2024-06-14 13:53:51,369 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 84 selfloop transitions, 33 changer transitions 0/119 dead transitions. [2024-06-14 13:53:51,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 119 transitions, 1196 flow [2024-06-14 13:53:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:53:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:53:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 13:53:51,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 13:53:51,372 INFO L175 Difference]: Start difference. First operand has 121 places, 106 transitions, 884 flow. Second operand 8 states and 92 transitions. [2024-06-14 13:53:51,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 119 transitions, 1196 flow [2024-06-14 13:53:51,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 1162 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 13:53:51,393 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 963 flow [2024-06-14 13:53:51,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=963, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2024-06-14 13:53:51,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-14 13:53:51,394 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 963 flow [2024-06-14 13:53:51,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:51,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:51,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:51,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:53:51,394 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)] === [2024-06-14 13:53:51,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash -455896446, now seen corresponding path program 1 times [2024-06-14 13:53:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:51,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820081672] [2024-06-14 13:53:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:51,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:53:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:53:56,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:53:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820081672] [2024-06-14 13:53:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820081672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:53:56,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:53:56,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:53:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476711803] [2024-06-14 13:53:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:53:56,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:53:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:53:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:53:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:53:56,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:53:56,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 963 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:56,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:53:56,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:53:56,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:53:57,208 INFO L124 PetriNetUnfolderBase]: 295/524 cut-off events. [2024-06-14 13:53:57,208 INFO L125 PetriNetUnfolderBase]: For 19140/19140 co-relation queries the response was YES. [2024-06-14 13:53:57,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3424 conditions, 524 events. 295/524 cut-off events. For 19140/19140 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2025 event pairs, 48 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 3361. Up to 494 conditions per place. [2024-06-14 13:53:57,214 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 102 selfloop transitions, 15 changer transitions 0/119 dead transitions. [2024-06-14 13:53:57,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 119 transitions, 1224 flow [2024-06-14 13:53:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:53:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:53:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-14 13:53:57,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-14 13:53:57,229 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 963 flow. Second operand 10 states and 95 transitions. [2024-06-14 13:53:57,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 119 transitions, 1224 flow [2024-06-14 13:53:57,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 119 transitions, 1127 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 13:53:57,259 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 900 flow [2024-06-14 13:53:57,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=900, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2024-06-14 13:53:57,260 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-14 13:53:57,260 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 900 flow [2024-06-14 13:53:57,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:53:57,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:53:57,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:53:57,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:53:57,260 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)] === [2024-06-14 13:53:57,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:53:57,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1015199108, now seen corresponding path program 1 times [2024-06-14 13:53:57,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:53:57,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047559082] [2024-06-14 13:53:57,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:53:57,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:53:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:00,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:00,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047559082] [2024-06-14 13:54:00,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047559082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:00,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:00,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:00,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795936203] [2024-06-14 13:54:00,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:00,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:00,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:00,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:00,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:00,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:00,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:00,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:00,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:00,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:00,608 INFO L124 PetriNetUnfolderBase]: 299/532 cut-off events. [2024-06-14 13:54:00,608 INFO L125 PetriNetUnfolderBase]: For 19685/19685 co-relation queries the response was YES. [2024-06-14 13:54:00,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3397 conditions, 532 events. 299/532 cut-off events. For 19685/19685 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2092 event pairs, 27 based on Foata normal form. 2/534 useless extension candidates. Maximal degree in co-relation 3333. Up to 425 conditions per place. [2024-06-14 13:54:00,612 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 102 selfloop transitions, 18 changer transitions 0/122 dead transitions. [2024-06-14 13:54:00,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 122 transitions, 1187 flow [2024-06-14 13:54:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:00,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 13:54:00,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-14 13:54:00,614 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 900 flow. Second operand 8 states and 86 transitions. [2024-06-14 13:54:00,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 122 transitions, 1187 flow [2024-06-14 13:54:00,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 122 transitions, 1143 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 13:54:00,638 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 912 flow [2024-06-14 13:54:00,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=912, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-06-14 13:54:00,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-14 13:54:00,638 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 912 flow [2024-06-14 13:54:00,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:00,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:00,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:00,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:54:00,639 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)] === [2024-06-14 13:54:00,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:00,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1013321283, now seen corresponding path program 1 times [2024-06-14 13:54:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:00,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429817335] [2024-06-14 13:54:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:00,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:03,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:03,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429817335] [2024-06-14 13:54:03,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429817335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:03,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:03,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:03,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950796031] [2024-06-14 13:54:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:03,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:03,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:03,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:03,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:04,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:04,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 912 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:04,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:04,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:04,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:04,339 INFO L124 PetriNetUnfolderBase]: 302/537 cut-off events. [2024-06-14 13:54:04,340 INFO L125 PetriNetUnfolderBase]: For 20073/20073 co-relation queries the response was YES. [2024-06-14 13:54:04,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3469 conditions, 537 events. 302/537 cut-off events. For 20073/20073 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2121 event pairs, 44 based on Foata normal form. 1/538 useless extension candidates. Maximal degree in co-relation 3405. Up to 450 conditions per place. [2024-06-14 13:54:04,344 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 94 selfloop transitions, 27 changer transitions 0/123 dead transitions. [2024-06-14 13:54:04,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 1235 flow [2024-06-14 13:54:04,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 13:54:04,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-14 13:54:04,365 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 912 flow. Second operand 8 states and 93 transitions. [2024-06-14 13:54:04,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 1235 flow [2024-06-14 13:54:04,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 1189 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 13:54:04,393 INFO L231 Difference]: Finished difference. Result has 127 places, 111 transitions, 975 flow [2024-06-14 13:54:04,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=975, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2024-06-14 13:54:04,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-14 13:54:04,394 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 975 flow [2024-06-14 13:54:04,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:04,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:04,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:04,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:54:04,394 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)] === [2024-06-14 13:54:04,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:04,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1456525086, now seen corresponding path program 2 times [2024-06-14 13:54:04,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:04,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303921632] [2024-06-14 13:54:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:04,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:07,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:07,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303921632] [2024-06-14 13:54:07,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303921632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:07,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:07,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:07,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922900908] [2024-06-14 13:54:07,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:07,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:07,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:07,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:07,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:07,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:07,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 975 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:07,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:07,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:07,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:07,708 INFO L124 PetriNetUnfolderBase]: 306/545 cut-off events. [2024-06-14 13:54:07,709 INFO L125 PetriNetUnfolderBase]: For 22291/22291 co-relation queries the response was YES. [2024-06-14 13:54:07,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3574 conditions, 545 events. 306/545 cut-off events. For 22291/22291 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2157 event pairs, 46 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3509. Up to 470 conditions per place. [2024-06-14 13:54:07,712 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 103 selfloop transitions, 19 changer transitions 0/124 dead transitions. [2024-06-14 13:54:07,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 124 transitions, 1266 flow [2024-06-14 13:54:07,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 13:54:07,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 13:54:07,714 INFO L175 Difference]: Start difference. First operand has 127 places, 111 transitions, 975 flow. Second operand 8 states and 89 transitions. [2024-06-14 13:54:07,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 124 transitions, 1266 flow [2024-06-14 13:54:07,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 124 transitions, 1189 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 13:54:07,743 INFO L231 Difference]: Finished difference. Result has 129 places, 112 transitions, 958 flow [2024-06-14 13:54:07,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=958, PETRI_PLACES=129, PETRI_TRANSITIONS=112} [2024-06-14 13:54:07,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-14 13:54:07,753 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 112 transitions, 958 flow [2024-06-14 13:54:07,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:07,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:07,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:07,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:54:07,754 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)] === [2024-06-14 13:54:07,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:07,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1500029460, now seen corresponding path program 3 times [2024-06-14 13:54:07,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:07,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611869286] [2024-06-14 13:54:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:07,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:10,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611869286] [2024-06-14 13:54:10,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611869286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:10,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:10,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:10,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816412620] [2024-06-14 13:54:10,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:10,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:10,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:10,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:10,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:10,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 112 transitions, 958 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:10,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:10,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:10,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:11,253 INFO L124 PetriNetUnfolderBase]: 310/553 cut-off events. [2024-06-14 13:54:11,254 INFO L125 PetriNetUnfolderBase]: For 23631/23631 co-relation queries the response was YES. [2024-06-14 13:54:11,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 553 events. 310/553 cut-off events. For 23631/23631 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2227 event pairs, 46 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 3551. Up to 472 conditions per place. [2024-06-14 13:54:11,258 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 100 selfloop transitions, 23 changer transitions 0/125 dead transitions. [2024-06-14 13:54:11,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 125 transitions, 1257 flow [2024-06-14 13:54:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 13:54:11,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-14 13:54:11,260 INFO L175 Difference]: Start difference. First operand has 129 places, 112 transitions, 958 flow. Second operand 8 states and 91 transitions. [2024-06-14 13:54:11,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 125 transitions, 1257 flow [2024-06-14 13:54:11,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 125 transitions, 1207 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 13:54:11,302 INFO L231 Difference]: Finished difference. Result has 131 places, 113 transitions, 979 flow [2024-06-14 13:54:11,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=979, PETRI_PLACES=131, PETRI_TRANSITIONS=113} [2024-06-14 13:54:11,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-14 13:54:11,303 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 113 transitions, 979 flow [2024-06-14 13:54:11,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:11,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:11,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:11,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:54:11,303 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)] === [2024-06-14 13:54:11,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash 822275870, now seen corresponding path program 4 times [2024-06-14 13:54:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:11,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118023069] [2024-06-14 13:54:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:14,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:14,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118023069] [2024-06-14 13:54:14,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118023069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:14,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:14,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:14,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86752909] [2024-06-14 13:54:14,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:14,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:14,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:14,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:14,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:14,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 113 transitions, 979 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:14,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:14,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:14,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:14,605 INFO L124 PetriNetUnfolderBase]: 314/561 cut-off events. [2024-06-14 13:54:14,606 INFO L125 PetriNetUnfolderBase]: For 24867/24867 co-relation queries the response was YES. [2024-06-14 13:54:14,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3692 conditions, 561 events. 314/561 cut-off events. For 24867/24867 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2281 event pairs, 29 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 3625. Up to 468 conditions per place. [2024-06-14 13:54:14,609 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 106 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2024-06-14 13:54:14,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 129 transitions, 1295 flow [2024-06-14 13:54:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:14,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 13:54:14,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 13:54:14,611 INFO L175 Difference]: Start difference. First operand has 131 places, 113 transitions, 979 flow. Second operand 8 states and 92 transitions. [2024-06-14 13:54:14,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 129 transitions, 1295 flow [2024-06-14 13:54:14,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 129 transitions, 1236 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 13:54:14,643 INFO L231 Difference]: Finished difference. Result has 133 places, 114 transitions, 988 flow [2024-06-14 13:54:14,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=988, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2024-06-14 13:54:14,644 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-14 13:54:14,644 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 988 flow [2024-06-14 13:54:14,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:14,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:14,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:14,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 13:54:14,644 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)] === [2024-06-14 13:54:14,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:14,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1647570654, now seen corresponding path program 5 times [2024-06-14 13:54:14,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:14,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773097142] [2024-06-14 13:54:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:14,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:17,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:17,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773097142] [2024-06-14 13:54:17,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773097142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:17,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:17,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:17,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218632241] [2024-06-14 13:54:17,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:17,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:17,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:17,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:17,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:17,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:17,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 988 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:17,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:17,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:17,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:17,954 INFO L124 PetriNetUnfolderBase]: 318/569 cut-off events. [2024-06-14 13:54:17,954 INFO L125 PetriNetUnfolderBase]: For 26131/26131 co-relation queries the response was YES. [2024-06-14 13:54:17,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3756 conditions, 569 events. 318/569 cut-off events. For 26131/26131 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2326 event pairs, 48 based on Foata normal form. 2/571 useless extension candidates. Maximal degree in co-relation 3688. Up to 491 conditions per place. [2024-06-14 13:54:17,958 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 105 selfloop transitions, 23 changer transitions 0/130 dead transitions. [2024-06-14 13:54:17,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 130 transitions, 1312 flow [2024-06-14 13:54:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 13:54:17,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-14 13:54:17,960 INFO L175 Difference]: Start difference. First operand has 133 places, 114 transitions, 988 flow. Second operand 8 states and 93 transitions. [2024-06-14 13:54:17,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 130 transitions, 1312 flow [2024-06-14 13:54:17,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 1254 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 13:54:17,993 INFO L231 Difference]: Finished difference. Result has 135 places, 115 transitions, 1005 flow [2024-06-14 13:54:17,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1005, PETRI_PLACES=135, PETRI_TRANSITIONS=115} [2024-06-14 13:54:17,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-14 13:54:17,994 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 115 transitions, 1005 flow [2024-06-14 13:54:17,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:17,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:17,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:17,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 13:54:17,994 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)] === [2024-06-14 13:54:17,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash 658665479, now seen corresponding path program 2 times [2024-06-14 13:54:17,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:17,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470132779] [2024-06-14 13:54:17,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:17,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:21,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:21,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470132779] [2024-06-14 13:54:21,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470132779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:21,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:21,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:21,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613589343] [2024-06-14 13:54:21,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:21,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:21,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:21,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:21,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:21,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:21,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 115 transitions, 1005 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:21,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:21,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:21,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:22,194 INFO L124 PetriNetUnfolderBase]: 316/566 cut-off events. [2024-06-14 13:54:22,194 INFO L125 PetriNetUnfolderBase]: For 25401/25401 co-relation queries the response was YES. [2024-06-14 13:54:22,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3693 conditions, 566 events. 316/566 cut-off events. For 25401/25401 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2317 event pairs, 48 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 3624. Up to 485 conditions per place. [2024-06-14 13:54:22,198 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 26 changer transitions 0/132 dead transitions. [2024-06-14 13:54:22,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 132 transitions, 1361 flow [2024-06-14 13:54:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 13:54:22,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 13:54:22,199 INFO L175 Difference]: Start difference. First operand has 135 places, 115 transitions, 1005 flow. Second operand 8 states and 94 transitions. [2024-06-14 13:54:22,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 132 transitions, 1361 flow [2024-06-14 13:54:22,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 132 transitions, 1298 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 13:54:22,232 INFO L231 Difference]: Finished difference. Result has 137 places, 117 transitions, 1052 flow [2024-06-14 13:54:22,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1052, PETRI_PLACES=137, PETRI_TRANSITIONS=117} [2024-06-14 13:54:22,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-14 13:54:22,233 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 117 transitions, 1052 flow [2024-06-14 13:54:22,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:22,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:22,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:22,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 13:54:22,234 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)] === [2024-06-14 13:54:22,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:22,234 INFO L85 PathProgramCache]: Analyzing trace with hash 871286774, now seen corresponding path program 6 times [2024-06-14 13:54:22,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:22,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120347865] [2024-06-14 13:54:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:22,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120347865] [2024-06-14 13:54:25,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120347865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:25,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:25,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:25,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252529383] [2024-06-14 13:54:25,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:25,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:25,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:25,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:25,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:25,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:25,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 117 transitions, 1052 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:25,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:25,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:25,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:25,909 INFO L124 PetriNetUnfolderBase]: 320/575 cut-off events. [2024-06-14 13:54:25,910 INFO L125 PetriNetUnfolderBase]: For 27660/27660 co-relation queries the response was YES. [2024-06-14 13:54:25,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 575 events. 320/575 cut-off events. For 27660/27660 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2393 event pairs, 48 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 3708. Up to 481 conditions per place. [2024-06-14 13:54:25,914 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 104 selfloop transitions, 25 changer transitions 0/131 dead transitions. [2024-06-14 13:54:25,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 131 transitions, 1375 flow [2024-06-14 13:54:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:54:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:54:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 13:54:25,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 13:54:25,918 INFO L175 Difference]: Start difference. First operand has 137 places, 117 transitions, 1052 flow. Second operand 8 states and 90 transitions. [2024-06-14 13:54:25,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 131 transitions, 1375 flow [2024-06-14 13:54:25,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 131 transitions, 1286 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 13:54:25,957 INFO L231 Difference]: Finished difference. Result has 138 places, 118 transitions, 1043 flow [2024-06-14 13:54:25,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1043, PETRI_PLACES=138, PETRI_TRANSITIONS=118} [2024-06-14 13:54:25,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-14 13:54:25,960 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 118 transitions, 1043 flow [2024-06-14 13:54:25,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:25,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:25,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:25,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 13:54:25,962 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)] === [2024-06-14 13:54:25,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:25,963 INFO L85 PathProgramCache]: Analyzing trace with hash 822429692, now seen corresponding path program 1 times [2024-06-14 13:54:25,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:25,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067036186] [2024-06-14 13:54:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:25,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:30,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:30,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067036186] [2024-06-14 13:54:30,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067036186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:30,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:30,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:30,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812564766] [2024-06-14 13:54:30,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:30,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:30,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:30,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:30,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:30,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:30,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 118 transitions, 1043 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:30,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:30,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:30,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:31,087 INFO L124 PetriNetUnfolderBase]: 326/585 cut-off events. [2024-06-14 13:54:31,087 INFO L125 PetriNetUnfolderBase]: For 27726/27726 co-relation queries the response was YES. [2024-06-14 13:54:31,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3824 conditions, 585 events. 326/585 cut-off events. For 27726/27726 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2429 event pairs, 54 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3754. Up to 501 conditions per place. [2024-06-14 13:54:31,109 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 110 selfloop transitions, 25 changer transitions 0/137 dead transitions. [2024-06-14 13:54:31,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 137 transitions, 1409 flow [2024-06-14 13:54:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:54:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:54:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 13:54:31,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 13:54:31,111 INFO L175 Difference]: Start difference. First operand has 138 places, 118 transitions, 1043 flow. Second operand 9 states and 102 transitions. [2024-06-14 13:54:31,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 137 transitions, 1409 flow [2024-06-14 13:54:31,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 1339 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 13:54:31,146 INFO L231 Difference]: Finished difference. Result has 141 places, 120 transitions, 1070 flow [2024-06-14 13:54:31,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1070, PETRI_PLACES=141, PETRI_TRANSITIONS=120} [2024-06-14 13:54:31,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-14 13:54:31,146 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 120 transitions, 1070 flow [2024-06-14 13:54:31,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:31,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:31,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:31,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 13:54:31,147 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)] === [2024-06-14 13:54:31,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1487244506, now seen corresponding path program 2 times [2024-06-14 13:54:31,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:31,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362214458] [2024-06-14 13:54:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:31,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:35,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362214458] [2024-06-14 13:54:35,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362214458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:35,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:35,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:35,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913131602] [2024-06-14 13:54:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:35,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:35,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:35,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:35,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:35,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:35,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 120 transitions, 1070 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:35,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:35,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:36,194 INFO L124 PetriNetUnfolderBase]: 332/595 cut-off events. [2024-06-14 13:54:36,194 INFO L125 PetriNetUnfolderBase]: For 28809/28809 co-relation queries the response was YES. [2024-06-14 13:54:36,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3911 conditions, 595 events. 332/595 cut-off events. For 28809/28809 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2503 event pairs, 48 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 3840. Up to 491 conditions per place. [2024-06-14 13:54:36,197 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 107 selfloop transitions, 28 changer transitions 0/137 dead transitions. [2024-06-14 13:54:36,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 137 transitions, 1435 flow [2024-06-14 13:54:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:54:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:54:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 13:54:36,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 13:54:36,198 INFO L175 Difference]: Start difference. First operand has 141 places, 120 transitions, 1070 flow. Second operand 9 states and 100 transitions. [2024-06-14 13:54:36,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 137 transitions, 1435 flow [2024-06-14 13:54:36,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 137 transitions, 1354 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 13:54:36,238 INFO L231 Difference]: Finished difference. Result has 143 places, 122 transitions, 1096 flow [2024-06-14 13:54:36,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1096, PETRI_PLACES=143, PETRI_TRANSITIONS=122} [2024-06-14 13:54:36,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-14 13:54:36,239 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 122 transitions, 1096 flow [2024-06-14 13:54:36,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:36,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:36,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:36,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 13:54:36,243 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)] === [2024-06-14 13:54:36,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:36,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1641848643, now seen corresponding path program 1 times [2024-06-14 13:54:36,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:36,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101991426] [2024-06-14 13:54:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:36,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:41,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101991426] [2024-06-14 13:54:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101991426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:41,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:41,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:54:41,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716601870] [2024-06-14 13:54:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:41,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:54:41,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:41,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:54:41,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:54:41,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 13:54:41,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 122 transitions, 1096 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:41,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:41,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 13:54:41,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:41,780 INFO L124 PetriNetUnfolderBase]: 341/610 cut-off events. [2024-06-14 13:54:41,780 INFO L125 PetriNetUnfolderBase]: For 31283/31283 co-relation queries the response was YES. [2024-06-14 13:54:41,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4036 conditions, 610 events. 341/610 cut-off events. For 31283/31283 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2573 event pairs, 54 based on Foata normal form. 3/613 useless extension candidates. Maximal degree in co-relation 3964. Up to 506 conditions per place. [2024-06-14 13:54:41,784 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 109 selfloop transitions, 30 changer transitions 0/141 dead transitions. [2024-06-14 13:54:41,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 141 transitions, 1493 flow [2024-06-14 13:54:41,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:54:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:54:41,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 13:54:41,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 13:54:41,785 INFO L175 Difference]: Start difference. First operand has 143 places, 122 transitions, 1096 flow. Second operand 10 states and 122 transitions. [2024-06-14 13:54:41,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 141 transitions, 1493 flow [2024-06-14 13:54:41,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 141 transitions, 1402 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 13:54:41,827 INFO L231 Difference]: Finished difference. Result has 146 places, 125 transitions, 1141 flow [2024-06-14 13:54:41,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1141, PETRI_PLACES=146, PETRI_TRANSITIONS=125} [2024-06-14 13:54:41,828 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-14 13:54:41,828 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 125 transitions, 1141 flow [2024-06-14 13:54:41,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:41,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:41,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:41,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 13:54:41,829 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)] === [2024-06-14 13:54:41,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash 664387056, now seen corresponding path program 3 times [2024-06-14 13:54:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:41,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067195799] [2024-06-14 13:54:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:41,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:46,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067195799] [2024-06-14 13:54:46,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067195799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:46,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:46,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:46,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808284012] [2024-06-14 13:54:46,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:46,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:46,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:46,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 125 transitions, 1141 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:46,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:46,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:46,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:47,095 INFO L124 PetriNetUnfolderBase]: 357/636 cut-off events. [2024-06-14 13:54:47,096 INFO L125 PetriNetUnfolderBase]: For 33949/33949 co-relation queries the response was YES. [2024-06-14 13:54:47,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4371 conditions, 636 events. 357/636 cut-off events. For 33949/33949 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2703 event pairs, 46 based on Foata normal form. 2/638 useless extension candidates. Maximal degree in co-relation 4298. Up to 461 conditions per place. [2024-06-14 13:54:47,100 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 44 changer transitions 0/145 dead transitions. [2024-06-14 13:54:47,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 145 transitions, 1672 flow [2024-06-14 13:54:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:54:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:54:47,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 13:54:47,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 13:54:47,103 INFO L175 Difference]: Start difference. First operand has 146 places, 125 transitions, 1141 flow. Second operand 9 states and 103 transitions. [2024-06-14 13:54:47,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 145 transitions, 1672 flow [2024-06-14 13:54:47,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 1558 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 13:54:47,151 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 1221 flow [2024-06-14 13:54:47,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1221, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2024-06-14 13:54:47,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-14 13:54:47,152 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 1221 flow [2024-06-14 13:54:47,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:47,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:47,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:47,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 13:54:47,153 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)] === [2024-06-14 13:54:47,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:47,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1487042696, now seen corresponding path program 4 times [2024-06-14 13:54:47,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:47,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058085681] [2024-06-14 13:54:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:47,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:52,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:52,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058085681] [2024-06-14 13:54:52,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058085681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:52,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:52,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:54:52,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310559268] [2024-06-14 13:54:52,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:52,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:54:52,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:52,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:54:52,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:54:52,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:54:52,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 1221 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:52,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:52,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:54:52,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:52,605 INFO L124 PetriNetUnfolderBase]: 353/630 cut-off events. [2024-06-14 13:54:52,606 INFO L125 PetriNetUnfolderBase]: For 33002/33002 co-relation queries the response was YES. [2024-06-14 13:54:52,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4272 conditions, 630 events. 353/630 cut-off events. For 33002/33002 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2676 event pairs, 46 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 4198. Up to 458 conditions per place. [2024-06-14 13:54:52,610 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 42 changer transitions 0/144 dead transitions. [2024-06-14 13:54:52,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 1558 flow [2024-06-14 13:54:52,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:54:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:54:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 13:54:52,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 13:54:52,611 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 1221 flow. Second operand 9 states and 103 transitions. [2024-06-14 13:54:52,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 1558 flow [2024-06-14 13:54:52,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1441 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-14 13:54:52,660 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1193 flow [2024-06-14 13:54:52,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1193, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-14 13:54:52,661 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-14 13:54:52,661 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1193 flow [2024-06-14 13:54:52,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:52,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:52,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:52,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 13:54:52,662 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)] === [2024-06-14 13:54:52,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 847949715, now seen corresponding path program 2 times [2024-06-14 13:54:52,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:52,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457722383] [2024-06-14 13:54:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:54:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:54:57,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:54:57,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457722383] [2024-06-14 13:54:57,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457722383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:54:57,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:54:57,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:54:57,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924284971] [2024-06-14 13:54:57,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:54:57,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:54:57,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:54:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:54:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:54:57,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 13:54:57,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1193 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:57,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:54:57,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 13:54:57,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:54:57,954 INFO L124 PetriNetUnfolderBase]: 356/636 cut-off events. [2024-06-14 13:54:57,955 INFO L125 PetriNetUnfolderBase]: For 32749/32751 co-relation queries the response was YES. [2024-06-14 13:54:57,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4331 conditions, 636 events. 356/636 cut-off events. For 32749/32751 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2699 event pairs, 69 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 4255. Up to 561 conditions per place. [2024-06-14 13:54:57,959 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 112 selfloop transitions, 26 changer transitions 0/140 dead transitions. [2024-06-14 13:54:57,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 140 transitions, 1527 flow [2024-06-14 13:54:57,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:54:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:54:57,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 13:54:57,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 13:54:57,963 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1193 flow. Second operand 10 states and 113 transitions. [2024-06-14 13:54:57,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 140 transitions, 1527 flow [2024-06-14 13:54:58,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 140 transitions, 1416 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 13:54:58,015 INFO L231 Difference]: Finished difference. Result has 153 places, 131 transitions, 1181 flow [2024-06-14 13:54:58,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1181, PETRI_PLACES=153, PETRI_TRANSITIONS=131} [2024-06-14 13:54:58,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-14 13:54:58,016 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 131 transitions, 1181 flow [2024-06-14 13:54:58,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:54:58,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:54:58,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:54:58,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 13:54:58,017 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)] === [2024-06-14 13:54:58,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:54:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash -461790234, now seen corresponding path program 7 times [2024-06-14 13:54:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:54:58,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144593206] [2024-06-14 13:54:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:54:58,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:54:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:01,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:01,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144593206] [2024-06-14 13:55:01,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144593206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:01,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:01,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:55:01,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727775549] [2024-06-14 13:55:01,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:01,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:55:01,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:01,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:55:01,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:55:01,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:01,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 131 transitions, 1181 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:01,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:01,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:01,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:01,594 INFO L124 PetriNetUnfolderBase]: 353/631 cut-off events. [2024-06-14 13:55:01,594 INFO L125 PetriNetUnfolderBase]: For 32624/32626 co-relation queries the response was YES. [2024-06-14 13:55:01,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4151 conditions, 631 events. 353/631 cut-off events. For 32624/32626 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2689 event pairs, 57 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 4074. Up to 518 conditions per place. [2024-06-14 13:55:01,599 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 110 selfloop transitions, 29 changer transitions 0/141 dead transitions. [2024-06-14 13:55:01,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 141 transitions, 1489 flow [2024-06-14 13:55:01,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:55:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:55:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 13:55:01,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 13:55:01,601 INFO L175 Difference]: Start difference. First operand has 153 places, 131 transitions, 1181 flow. Second operand 8 states and 88 transitions. [2024-06-14 13:55:01,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 141 transitions, 1489 flow [2024-06-14 13:55:01,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 141 transitions, 1406 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 13:55:01,677 INFO L231 Difference]: Finished difference. Result has 153 places, 131 transitions, 1160 flow [2024-06-14 13:55:01,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1160, PETRI_PLACES=153, PETRI_TRANSITIONS=131} [2024-06-14 13:55:01,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-14 13:55:01,678 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 131 transitions, 1160 flow [2024-06-14 13:55:01,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:01,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:01,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:01,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 13:55:01,679 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)] === [2024-06-14 13:55:01,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:01,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1514131384, now seen corresponding path program 5 times [2024-06-14 13:55:01,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:01,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574634517] [2024-06-14 13:55:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:01,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:08,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:08,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574634517] [2024-06-14 13:55:08,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574634517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:08,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:08,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:55:08,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640684729] [2024-06-14 13:55:08,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:08,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:55:08,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:08,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:55:08,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:55:08,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:08,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 131 transitions, 1160 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:08,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:08,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:08,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:08,853 INFO L124 PetriNetUnfolderBase]: 379/673 cut-off events. [2024-06-14 13:55:08,854 INFO L125 PetriNetUnfolderBase]: For 40141/40143 co-relation queries the response was YES. [2024-06-14 13:55:08,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 673 events. 379/673 cut-off events. For 40141/40143 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2906 event pairs, 71 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 4623. Up to 302 conditions per place. [2024-06-14 13:55:08,858 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 58 changer transitions 0/154 dead transitions. [2024-06-14 13:55:08,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 154 transitions, 1922 flow [2024-06-14 13:55:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 13:55:08,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-14 13:55:08,860 INFO L175 Difference]: Start difference. First operand has 153 places, 131 transitions, 1160 flow. Second operand 9 states and 109 transitions. [2024-06-14 13:55:08,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 154 transitions, 1922 flow [2024-06-14 13:55:08,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 1817 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 13:55:08,912 INFO L231 Difference]: Finished difference. Result has 156 places, 138 transitions, 1352 flow [2024-06-14 13:55:08,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1352, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2024-06-14 13:55:08,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-14 13:55:08,913 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 1352 flow [2024-06-14 13:55:08,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:08,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:08,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:08,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 13:55:08,914 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)] === [2024-06-14 13:55:08,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1513929574, now seen corresponding path program 6 times [2024-06-14 13:55:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045734286] [2024-06-14 13:55:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:08,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045734286] [2024-06-14 13:55:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045734286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:13,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:13,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:55:13,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808768187] [2024-06-14 13:55:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:13,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:55:13,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:13,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:55:13,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:55:13,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:13,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 138 transitions, 1352 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:13,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:13,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:13,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:13,802 INFO L124 PetriNetUnfolderBase]: 395/699 cut-off events. [2024-06-14 13:55:13,802 INFO L125 PetriNetUnfolderBase]: For 44948/44950 co-relation queries the response was YES. [2024-06-14 13:55:13,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 699 events. 395/699 cut-off events. For 44948/44950 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3050 event pairs, 60 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 5086. Up to 547 conditions per place. [2024-06-14 13:55:13,808 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 115 selfloop transitions, 39 changer transitions 0/156 dead transitions. [2024-06-14 13:55:13,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 156 transitions, 1930 flow [2024-06-14 13:55:13,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 13:55:13,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 13:55:13,809 INFO L175 Difference]: Start difference. First operand has 156 places, 138 transitions, 1352 flow. Second operand 9 states and 104 transitions. [2024-06-14 13:55:13,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 156 transitions, 1930 flow [2024-06-14 13:55:13,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 156 transitions, 1844 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-14 13:55:13,875 INFO L231 Difference]: Finished difference. Result has 161 places, 142 transitions, 1469 flow [2024-06-14 13:55:13,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1469, PETRI_PLACES=161, PETRI_TRANSITIONS=142} [2024-06-14 13:55:13,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-14 13:55:13,876 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 142 transitions, 1469 flow [2024-06-14 13:55:13,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:13,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:13,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:13,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 13:55:13,876 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)] === [2024-06-14 13:55:13,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:13,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1257421345, now seen corresponding path program 3 times [2024-06-14 13:55:13,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:13,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228483417] [2024-06-14 13:55:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:13,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:19,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:19,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228483417] [2024-06-14 13:55:19,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228483417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:19,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:19,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:19,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111863202] [2024-06-14 13:55:19,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:19,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:19,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:19,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:19,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:19,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:19,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 142 transitions, 1469 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:19,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:19,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:19,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:19,925 INFO L124 PetriNetUnfolderBase]: 393/694 cut-off events. [2024-06-14 13:55:19,926 INFO L125 PetriNetUnfolderBase]: For 43294/43294 co-relation queries the response was YES. [2024-06-14 13:55:19,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5131 conditions, 694 events. 393/694 cut-off events. For 43294/43294 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3003 event pairs, 61 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 5049. Up to 651 conditions per place. [2024-06-14 13:55:19,933 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 22 changer transitions 0/152 dead transitions. [2024-06-14 13:55:19,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 152 transitions, 1900 flow [2024-06-14 13:55:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 13:55:19,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-14 13:55:19,934 INFO L175 Difference]: Start difference. First operand has 161 places, 142 transitions, 1469 flow. Second operand 9 states and 95 transitions. [2024-06-14 13:55:19,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 152 transitions, 1900 flow [2024-06-14 13:55:20,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 152 transitions, 1793 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-14 13:55:20,013 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 1412 flow [2024-06-14 13:55:20,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1412, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-06-14 13:55:20,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-14 13:55:20,014 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 1412 flow [2024-06-14 13:55:20,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:20,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:20,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:20,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 13:55:20,015 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)] === [2024-06-14 13:55:20,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:20,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1689847280, now seen corresponding path program 7 times [2024-06-14 13:55:20,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:20,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012619932] [2024-06-14 13:55:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:24,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012619932] [2024-06-14 13:55:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012619932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:24,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:55:24,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069137259] [2024-06-14 13:55:24,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:24,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:55:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:55:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:55:24,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:24,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 1412 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:24,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:24,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:24,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:25,170 INFO L124 PetriNetUnfolderBase]: 389/690 cut-off events. [2024-06-14 13:55:25,170 INFO L125 PetriNetUnfolderBase]: For 42719/42721 co-relation queries the response was YES. [2024-06-14 13:55:25,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4942 conditions, 690 events. 389/690 cut-off events. For 42719/42721 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2997 event pairs, 59 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 4858. Up to 541 conditions per place. [2024-06-14 13:55:25,175 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 40 changer transitions 0/155 dead transitions. [2024-06-14 13:55:25,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 155 transitions, 1766 flow [2024-06-14 13:55:25,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:25,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 13:55:25,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 13:55:25,176 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 1412 flow. Second operand 9 states and 102 transitions. [2024-06-14 13:55:25,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 155 transitions, 1766 flow [2024-06-14 13:55:25,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 155 transitions, 1648 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-14 13:55:25,247 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 1379 flow [2024-06-14 13:55:25,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1379, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-06-14 13:55:25,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-14 13:55:25,247 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 1379 flow [2024-06-14 13:55:25,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:25,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:25,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:25,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 13:55:25,248 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)] === [2024-06-14 13:55:25,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:25,248 INFO L85 PathProgramCache]: Analyzing trace with hash 442366867, now seen corresponding path program 4 times [2024-06-14 13:55:25,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:25,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665352902] [2024-06-14 13:55:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:25,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:29,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665352902] [2024-06-14 13:55:29,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665352902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:29,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:29,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:29,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3606807] [2024-06-14 13:55:29,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:29,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:29,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:29,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:29,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:30,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:30,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 1379 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:30,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:30,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:30,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:30,469 INFO L124 PetriNetUnfolderBase]: 387/687 cut-off events. [2024-06-14 13:55:30,469 INFO L125 PetriNetUnfolderBase]: For 39404/39406 co-relation queries the response was YES. [2024-06-14 13:55:30,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4827 conditions, 687 events. 387/687 cut-off events. For 39404/39406 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2987 event pairs, 68 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 4744. Up to 594 conditions per place. [2024-06-14 13:55:30,474 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 118 selfloop transitions, 34 changer transitions 0/154 dead transitions. [2024-06-14 13:55:30,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 154 transitions, 1753 flow [2024-06-14 13:55:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:55:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:55:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 13:55:30,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 13:55:30,476 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 1379 flow. Second operand 10 states and 106 transitions. [2024-06-14 13:55:30,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 154 transitions, 1753 flow [2024-06-14 13:55:30,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 154 transitions, 1668 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 13:55:30,543 INFO L231 Difference]: Finished difference. Result has 167 places, 144 transitions, 1415 flow [2024-06-14 13:55:30,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1415, PETRI_PLACES=167, PETRI_TRANSITIONS=144} [2024-06-14 13:55:30,544 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-14 13:55:30,544 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 144 transitions, 1415 flow [2024-06-14 13:55:30,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:30,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:30,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:30,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 13:55:30,545 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)] === [2024-06-14 13:55:30,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:30,545 INFO L85 PathProgramCache]: Analyzing trace with hash -205074522, now seen corresponding path program 8 times [2024-06-14 13:55:30,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:30,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655250198] [2024-06-14 13:55:30,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:30,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:34,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655250198] [2024-06-14 13:55:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655250198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:34,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:55:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060625336] [2024-06-14 13:55:34,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:34,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:55:34,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:34,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:55:34,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:55:34,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:34,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 144 transitions, 1415 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:34,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:34,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:34,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:35,160 INFO L124 PetriNetUnfolderBase]: 398/705 cut-off events. [2024-06-14 13:55:35,161 INFO L125 PetriNetUnfolderBase]: For 44943/44945 co-relation queries the response was YES. [2024-06-14 13:55:35,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 705 events. 398/705 cut-off events. For 44943/44945 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3092 event pairs, 59 based on Foata normal form. 2/707 useless extension candidates. Maximal degree in co-relation 5015. Up to 309 conditions per place. [2024-06-14 13:55:35,166 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 68 changer transitions 0/165 dead transitions. [2024-06-14 13:55:35,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 165 transitions, 2273 flow [2024-06-14 13:55:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 13:55:35,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 13:55:35,169 INFO L175 Difference]: Start difference. First operand has 167 places, 144 transitions, 1415 flow. Second operand 9 states and 110 transitions. [2024-06-14 13:55:35,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 165 transitions, 2273 flow [2024-06-14 13:55:35,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 165 transitions, 2170 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 13:55:35,243 INFO L231 Difference]: Finished difference. Result has 169 places, 148 transitions, 1587 flow [2024-06-14 13:55:35,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1587, PETRI_PLACES=169, PETRI_TRANSITIONS=148} [2024-06-14 13:55:35,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-14 13:55:35,244 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 148 transitions, 1587 flow [2024-06-14 13:55:35,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:35,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:35,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:35,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 13:55:35,245 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)] === [2024-06-14 13:55:35,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:35,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1257429064, now seen corresponding path program 9 times [2024-06-14 13:55:35,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:35,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773825754] [2024-06-14 13:55:35,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:35,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:39,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:39,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773825754] [2024-06-14 13:55:39,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773825754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:39,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:39,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:55:39,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831607075] [2024-06-14 13:55:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:39,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:55:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:55:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:55:39,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:39,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 148 transitions, 1587 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:39,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:39,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:39,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:39,874 INFO L124 PetriNetUnfolderBase]: 404/713 cut-off events. [2024-06-14 13:55:39,875 INFO L125 PetriNetUnfolderBase]: For 45835/45835 co-relation queries the response was YES. [2024-06-14 13:55:39,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5311 conditions, 713 events. 404/713 cut-off events. For 45835/45835 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3108 event pairs, 61 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 5225. Up to 606 conditions per place. [2024-06-14 13:55:39,880 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 134 selfloop transitions, 28 changer transitions 0/164 dead transitions. [2024-06-14 13:55:39,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 164 transitions, 2236 flow [2024-06-14 13:55:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:39,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:39,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 13:55:39,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 13:55:39,881 INFO L175 Difference]: Start difference. First operand has 169 places, 148 transitions, 1587 flow. Second operand 9 states and 102 transitions. [2024-06-14 13:55:39,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 164 transitions, 2236 flow [2024-06-14 13:55:39,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 164 transitions, 2025 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-14 13:55:39,959 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 1511 flow [2024-06-14 13:55:39,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1511, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2024-06-14 13:55:39,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-14 13:55:39,959 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 1511 flow [2024-06-14 13:55:39,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:39,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:39,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:39,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 13:55:39,960 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)] === [2024-06-14 13:55:39,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1248224854, now seen corresponding path program 10 times [2024-06-14 13:55:39,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:39,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96036867] [2024-06-14 13:55:39,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:39,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:43,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:43,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96036867] [2024-06-14 13:55:43,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96036867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:43,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:43,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:55:43,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716230264] [2024-06-14 13:55:43,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:43,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:55:43,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:43,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:55:43,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:55:43,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:43,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 1511 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:43,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:43,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:43,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:44,281 INFO L124 PetriNetUnfolderBase]: 406/717 cut-off events. [2024-06-14 13:55:44,282 INFO L125 PetriNetUnfolderBase]: For 47464/47464 co-relation queries the response was YES. [2024-06-14 13:55:44,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5053 conditions, 717 events. 406/717 cut-off events. For 47464/47464 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3145 event pairs, 66 based on Foata normal form. 4/721 useless extension candidates. Maximal degree in co-relation 4966. Up to 657 conditions per place. [2024-06-14 13:55:44,287 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 22 changer transitions 0/165 dead transitions. [2024-06-14 13:55:44,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 165 transitions, 2048 flow [2024-06-14 13:55:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:55:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:55:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 13:55:44,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-14 13:55:44,288 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 1511 flow. Second operand 10 states and 104 transitions. [2024-06-14 13:55:44,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 165 transitions, 2048 flow [2024-06-14 13:55:44,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 165 transitions, 1931 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 13:55:44,400 INFO L231 Difference]: Finished difference. Result has 177 places, 152 transitions, 1514 flow [2024-06-14 13:55:44,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1514, PETRI_PLACES=177, PETRI_TRANSITIONS=152} [2024-06-14 13:55:44,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-14 13:55:44,401 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 152 transitions, 1514 flow [2024-06-14 13:55:44,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:44,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:44,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:44,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 13:55:44,402 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)] === [2024-06-14 13:55:44,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1257161875, now seen corresponding path program 5 times [2024-06-14 13:55:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:44,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956350423] [2024-06-14 13:55:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:44,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:49,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956350423] [2024-06-14 13:55:49,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956350423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:49,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:49,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:49,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215648643] [2024-06-14 13:55:49,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:49,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:49,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:49,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:49,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 152 transitions, 1514 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:49,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:49,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:49,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:49,699 INFO L124 PetriNetUnfolderBase]: 404/714 cut-off events. [2024-06-14 13:55:49,700 INFO L125 PetriNetUnfolderBase]: For 41473/41473 co-relation queries the response was YES. [2024-06-14 13:55:49,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 714 events. 404/714 cut-off events. For 41473/41473 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3121 event pairs, 66 based on Foata normal form. 1/715 useless extension candidates. Maximal degree in co-relation 4818. Up to 681 conditions per place. [2024-06-14 13:55:49,705 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 18 changer transitions 0/162 dead transitions. [2024-06-14 13:55:49,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 162 transitions, 1859 flow [2024-06-14 13:55:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:55:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:55:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-14 13:55:49,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-14 13:55:49,706 INFO L175 Difference]: Start difference. First operand has 177 places, 152 transitions, 1514 flow. Second operand 10 states and 98 transitions. [2024-06-14 13:55:49,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 162 transitions, 1859 flow [2024-06-14 13:55:49,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 162 transitions, 1796 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 13:55:49,784 INFO L231 Difference]: Finished difference. Result has 179 places, 152 transitions, 1492 flow [2024-06-14 13:55:49,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1492, PETRI_PLACES=179, PETRI_TRANSITIONS=152} [2024-06-14 13:55:49,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-14 13:55:49,784 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 152 transitions, 1492 flow [2024-06-14 13:55:49,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:49,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:49,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 13:55:49,785 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)] === [2024-06-14 13:55:49,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1406399703, now seen corresponding path program 1 times [2024-06-14 13:55:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:49,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272420838] [2024-06-14 13:55:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:49,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:53,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:53,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272420838] [2024-06-14 13:55:53,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272420838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:53,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:53,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:53,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204248771] [2024-06-14 13:55:53,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:53,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:53,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:53,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:53,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 152 transitions, 1492 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:53,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:53,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:53,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:53,817 INFO L124 PetriNetUnfolderBase]: 408/722 cut-off events. [2024-06-14 13:55:53,817 INFO L125 PetriNetUnfolderBase]: For 44899/44899 co-relation queries the response was YES. [2024-06-14 13:55:53,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4956 conditions, 722 events. 408/722 cut-off events. For 44899/44899 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3173 event pairs, 40 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 4866. Up to 607 conditions per place. [2024-06-14 13:55:53,822 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 147 selfloop transitions, 19 changer transitions 0/168 dead transitions. [2024-06-14 13:55:53,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 168 transitions, 1885 flow [2024-06-14 13:55:53,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 13:55:53,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2024-06-14 13:55:53,824 INFO L175 Difference]: Start difference. First operand has 179 places, 152 transitions, 1492 flow. Second operand 9 states and 94 transitions. [2024-06-14 13:55:53,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 168 transitions, 1885 flow [2024-06-14 13:55:53,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 168 transitions, 1843 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 13:55:53,906 INFO L231 Difference]: Finished difference. Result has 179 places, 153 transitions, 1518 flow [2024-06-14 13:55:53,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1518, PETRI_PLACES=179, PETRI_TRANSITIONS=153} [2024-06-14 13:55:53,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-14 13:55:53,906 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 153 transitions, 1518 flow [2024-06-14 13:55:53,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:53,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:53,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:53,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 13:55:53,907 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)] === [2024-06-14 13:55:53,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:53,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1348307253, now seen corresponding path program 2 times [2024-06-14 13:55:53,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:53,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034154545] [2024-06-14 13:55:53,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:53,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:55:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:55:57,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:55:57,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034154545] [2024-06-14 13:55:57,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034154545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:55:57,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:55:57,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:55:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921210145] [2024-06-14 13:55:57,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:55:57,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:55:57,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:55:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:55:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:55:57,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:55:57,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 153 transitions, 1518 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:57,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:55:57,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:55:57,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:55:57,471 INFO L124 PetriNetUnfolderBase]: 412/730 cut-off events. [2024-06-14 13:55:57,471 INFO L125 PetriNetUnfolderBase]: For 46295/46295 co-relation queries the response was YES. [2024-06-14 13:55:57,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5067 conditions, 730 events. 412/730 cut-off events. For 46295/46295 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3234 event pairs, 65 based on Foata normal form. 2/732 useless extension candidates. Maximal degree in co-relation 4976. Up to 647 conditions per place. [2024-06-14 13:55:57,476 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 20 changer transitions 0/168 dead transitions. [2024-06-14 13:55:57,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 168 transitions, 1911 flow [2024-06-14 13:55:57,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:55:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:55:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 13:55:57,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 13:55:57,478 INFO L175 Difference]: Start difference. First operand has 179 places, 153 transitions, 1518 flow. Second operand 9 states and 97 transitions. [2024-06-14 13:55:57,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 168 transitions, 1911 flow [2024-06-14 13:55:57,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 168 transitions, 1853 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 13:55:57,565 INFO L231 Difference]: Finished difference. Result has 181 places, 154 transitions, 1532 flow [2024-06-14 13:55:57,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1532, PETRI_PLACES=181, PETRI_TRANSITIONS=154} [2024-06-14 13:55:57,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-14 13:55:57,566 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 154 transitions, 1532 flow [2024-06-14 13:55:57,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:55:57,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:55:57,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:55:57,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 13:55:57,566 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)] === [2024-06-14 13:55:57,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:55:57,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1348191933, now seen corresponding path program 3 times [2024-06-14 13:55:57,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:55:57,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417446345] [2024-06-14 13:55:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:55:57,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:55:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:01,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417446345] [2024-06-14 13:56:01,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417446345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:01,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:01,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:01,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754840440] [2024-06-14 13:56:01,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:01,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:01,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:01,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:01,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:01,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 154 transitions, 1532 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:01,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:01,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:01,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:01,788 INFO L124 PetriNetUnfolderBase]: 416/738 cut-off events. [2024-06-14 13:56:01,788 INFO L125 PetriNetUnfolderBase]: For 48964/48964 co-relation queries the response was YES. [2024-06-14 13:56:01,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 738 events. 416/738 cut-off events. For 48964/48964 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3301 event pairs, 61 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 5033. Up to 649 conditions per place. [2024-06-14 13:56:01,794 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 143 selfloop transitions, 24 changer transitions 0/169 dead transitions. [2024-06-14 13:56:01,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 169 transitions, 1933 flow [2024-06-14 13:56:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 13:56:01,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 13:56:01,795 INFO L175 Difference]: Start difference. First operand has 181 places, 154 transitions, 1532 flow. Second operand 9 states and 99 transitions. [2024-06-14 13:56:01,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 169 transitions, 1933 flow [2024-06-14 13:56:01,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 169 transitions, 1871 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:01,884 INFO L231 Difference]: Finished difference. Result has 183 places, 155 transitions, 1552 flow [2024-06-14 13:56:01,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1552, PETRI_PLACES=183, PETRI_TRANSITIONS=155} [2024-06-14 13:56:01,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 13:56:01,885 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 155 transitions, 1552 flow [2024-06-14 13:56:01,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:01,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:01,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:01,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 13:56:01,886 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)] === [2024-06-14 13:56:01,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:01,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1228436493, now seen corresponding path program 1 times [2024-06-14 13:56:01,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:01,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501893213] [2024-06-14 13:56:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:01,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:07,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501893213] [2024-06-14 13:56:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501893213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:07,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:07,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:07,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231190517] [2024-06-14 13:56:07,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:07,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:07,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:07,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:07,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:07,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 155 transitions, 1552 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:07,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:07,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:07,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:07,574 INFO L124 PetriNetUnfolderBase]: 419/743 cut-off events. [2024-06-14 13:56:07,574 INFO L125 PetriNetUnfolderBase]: For 48816/48816 co-relation queries the response was YES. [2024-06-14 13:56:07,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 743 events. 419/743 cut-off events. For 48816/48816 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3330 event pairs, 62 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 5104. Up to 642 conditions per place. [2024-06-14 13:56:07,580 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 32 changer transitions 0/171 dead transitions. [2024-06-14 13:56:07,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 171 transitions, 2004 flow [2024-06-14 13:56:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 13:56:07,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 13:56:07,581 INFO L175 Difference]: Start difference. First operand has 183 places, 155 transitions, 1552 flow. Second operand 9 states and 103 transitions. [2024-06-14 13:56:07,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 171 transitions, 2004 flow [2024-06-14 13:56:07,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 171 transitions, 1932 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:07,677 INFO L231 Difference]: Finished difference. Result has 185 places, 157 transitions, 1624 flow [2024-06-14 13:56:07,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1624, PETRI_PLACES=185, PETRI_TRANSITIONS=157} [2024-06-14 13:56:07,677 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-14 13:56:07,677 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 157 transitions, 1624 flow [2024-06-14 13:56:07,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:07,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:07,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:07,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 13:56:07,678 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)] === [2024-06-14 13:56:07,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:07,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1228436307, now seen corresponding path program 4 times [2024-06-14 13:56:07,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:07,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644078589] [2024-06-14 13:56:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:07,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:11,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644078589] [2024-06-14 13:56:11,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644078589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:11,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:11,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:11,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480571970] [2024-06-14 13:56:11,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:11,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:11,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:11,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:11,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:11,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:11,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 157 transitions, 1624 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:11,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:11,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:11,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:12,190 INFO L124 PetriNetUnfolderBase]: 423/751 cut-off events. [2024-06-14 13:56:12,190 INFO L125 PetriNetUnfolderBase]: For 52302/52302 co-relation queries the response was YES. [2024-06-14 13:56:12,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5294 conditions, 751 events. 423/751 cut-off events. For 52302/52302 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3386 event pairs, 64 based on Foata normal form. 2/753 useless extension candidates. Maximal degree in co-relation 5200. Up to 656 conditions per place. [2024-06-14 13:56:12,196 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 28 changer transitions 0/172 dead transitions. [2024-06-14 13:56:12,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 172 transitions, 2037 flow [2024-06-14 13:56:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 13:56:12,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 13:56:12,198 INFO L175 Difference]: Start difference. First operand has 185 places, 157 transitions, 1624 flow. Second operand 9 states and 101 transitions. [2024-06-14 13:56:12,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 172 transitions, 2037 flow [2024-06-14 13:56:12,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 172 transitions, 1928 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:12,294 INFO L231 Difference]: Finished difference. Result has 187 places, 158 transitions, 1608 flow [2024-06-14 13:56:12,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1608, PETRI_PLACES=187, PETRI_TRANSITIONS=158} [2024-06-14 13:56:12,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-14 13:56:12,295 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 158 transitions, 1608 flow [2024-06-14 13:56:12,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:12,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:12,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:12,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 13:56:12,295 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)] === [2024-06-14 13:56:12,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:12,296 INFO L85 PathProgramCache]: Analyzing trace with hash 464803531, now seen corresponding path program 5 times [2024-06-14 13:56:12,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:12,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978233783] [2024-06-14 13:56:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:12,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:16,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:16,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978233783] [2024-06-14 13:56:16,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978233783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:16,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:16,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760436857] [2024-06-14 13:56:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:16,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:16,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:16,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 158 transitions, 1608 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:16,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:16,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:16,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:16,702 INFO L124 PetriNetUnfolderBase]: 427/759 cut-off events. [2024-06-14 13:56:16,702 INFO L125 PetriNetUnfolderBase]: For 54603/54603 co-relation queries the response was YES. [2024-06-14 13:56:16,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5350 conditions, 759 events. 427/759 cut-off events. For 54603/54603 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3434 event pairs, 48 based on Foata normal form. 2/761 useless extension candidates. Maximal degree in co-relation 5255. Up to 658 conditions per place. [2024-06-14 13:56:16,708 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2024-06-14 13:56:16,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 176 transitions, 2034 flow [2024-06-14 13:56:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 13:56:16,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 13:56:16,710 INFO L175 Difference]: Start difference. First operand has 187 places, 158 transitions, 1608 flow. Second operand 9 states and 100 transitions. [2024-06-14 13:56:16,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 176 transitions, 2034 flow [2024-06-14 13:56:16,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 176 transitions, 1953 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:16,801 INFO L231 Difference]: Finished difference. Result has 189 places, 159 transitions, 1609 flow [2024-06-14 13:56:16,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1609, PETRI_PLACES=189, PETRI_TRANSITIONS=159} [2024-06-14 13:56:16,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-14 13:56:16,802 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 159 transitions, 1609 flow [2024-06-14 13:56:16,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:16,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:16,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:16,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 13:56:16,803 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)] === [2024-06-14 13:56:16,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:16,803 INFO L85 PathProgramCache]: Analyzing trace with hash 464923687, now seen corresponding path program 2 times [2024-06-14 13:56:16,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:16,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455886357] [2024-06-14 13:56:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:16,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:22,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455886357] [2024-06-14 13:56:22,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455886357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:22,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:22,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:22,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192881932] [2024-06-14 13:56:22,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:22,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:22,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:22,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:22,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:22,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 159 transitions, 1609 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:22,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:22,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:22,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:23,026 INFO L124 PetriNetUnfolderBase]: 425/756 cut-off events. [2024-06-14 13:56:23,026 INFO L125 PetriNetUnfolderBase]: For 51655/51655 co-relation queries the response was YES. [2024-06-14 13:56:23,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5217 conditions, 756 events. 425/756 cut-off events. For 51655/51655 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3436 event pairs, 66 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 5121. Up to 664 conditions per place. [2024-06-14 13:56:23,031 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 30 changer transitions 0/178 dead transitions. [2024-06-14 13:56:23,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 178 transitions, 2090 flow [2024-06-14 13:56:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 13:56:23,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 13:56:23,033 INFO L175 Difference]: Start difference. First operand has 189 places, 159 transitions, 1609 flow. Second operand 9 states and 103 transitions. [2024-06-14 13:56:23,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 178 transitions, 2090 flow [2024-06-14 13:56:23,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 178 transitions, 2018 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:23,128 INFO L231 Difference]: Finished difference. Result has 191 places, 161 transitions, 1680 flow [2024-06-14 13:56:23,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1680, PETRI_PLACES=191, PETRI_TRANSITIONS=161} [2024-06-14 13:56:23,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-14 13:56:23,129 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 161 transitions, 1680 flow [2024-06-14 13:56:23,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:23,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:23,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:23,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 13:56:23,130 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)] === [2024-06-14 13:56:23,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:23,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1069390011, now seen corresponding path program 6 times [2024-06-14 13:56:23,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:23,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422932084] [2024-06-14 13:56:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:23,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:27,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:27,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422932084] [2024-06-14 13:56:27,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422932084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:27,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:27,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937176678] [2024-06-14 13:56:27,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:27,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:27,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:27,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:27,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:27,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 161 transitions, 1680 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:27,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:27,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:27,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:28,073 INFO L124 PetriNetUnfolderBase]: 429/764 cut-off events. [2024-06-14 13:56:28,074 INFO L125 PetriNetUnfolderBase]: For 55270/55270 co-relation queries the response was YES. [2024-06-14 13:56:28,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5297 conditions, 764 events. 429/764 cut-off events. For 55270/55270 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3484 event pairs, 68 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 5200. Up to 675 conditions per place. [2024-06-14 13:56:28,079 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 27 changer transitions 0/179 dead transitions. [2024-06-14 13:56:28,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 179 transitions, 2122 flow [2024-06-14 13:56:28,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 13:56:28,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 13:56:28,080 INFO L175 Difference]: Start difference. First operand has 191 places, 161 transitions, 1680 flow. Second operand 9 states and 102 transitions. [2024-06-14 13:56:28,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 179 transitions, 2122 flow [2024-06-14 13:56:28,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 179 transitions, 2012 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:28,188 INFO L231 Difference]: Finished difference. Result has 193 places, 162 transitions, 1665 flow [2024-06-14 13:56:28,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1665, PETRI_PLACES=193, PETRI_TRANSITIONS=162} [2024-06-14 13:56:28,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-14 13:56:28,189 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 162 transitions, 1665 flow [2024-06-14 13:56:28,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:28,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:28,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:28,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 13:56:28,190 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)] === [2024-06-14 13:56:28,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1069385361, now seen corresponding path program 7 times [2024-06-14 13:56:28,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:28,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568449358] [2024-06-14 13:56:28,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:28,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:31,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:31,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568449358] [2024-06-14 13:56:31,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568449358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:31,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:31,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:31,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070751099] [2024-06-14 13:56:31,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:31,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:31,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:31,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:31,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:31,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:31,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 162 transitions, 1665 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:31,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:31,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:31,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:32,340 INFO L124 PetriNetUnfolderBase]: 433/772 cut-off events. [2024-06-14 13:56:32,340 INFO L125 PetriNetUnfolderBase]: For 57057/57057 co-relation queries the response was YES. [2024-06-14 13:56:32,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5358 conditions, 772 events. 433/772 cut-off events. For 57057/57057 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3537 event pairs, 68 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 5260. Up to 686 conditions per place. [2024-06-14 13:56:32,346 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 24 changer transitions 0/180 dead transitions. [2024-06-14 13:56:32,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 180 transitions, 2107 flow [2024-06-14 13:56:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 13:56:32,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 13:56:32,348 INFO L175 Difference]: Start difference. First operand has 193 places, 162 transitions, 1665 flow. Second operand 9 states and 101 transitions. [2024-06-14 13:56:32,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 180 transitions, 2107 flow [2024-06-14 13:56:32,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 180 transitions, 2024 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:32,496 INFO L231 Difference]: Finished difference. Result has 195 places, 163 transitions, 1672 flow [2024-06-14 13:56:32,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1672, PETRI_PLACES=195, PETRI_TRANSITIONS=163} [2024-06-14 13:56:32,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-14 13:56:32,496 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 163 transitions, 1672 flow [2024-06-14 13:56:32,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:32,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:32,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:32,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 13:56:32,497 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)] === [2024-06-14 13:56:32,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:32,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1074038585, now seen corresponding path program 1 times [2024-06-14 13:56:32,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:32,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487832065] [2024-06-14 13:56:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:37,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:37,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487832065] [2024-06-14 13:56:37,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487832065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:37,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:37,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:37,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950299930] [2024-06-14 13:56:37,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:37,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:37,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:37,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:37,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:37,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 163 transitions, 1672 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:37,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:37,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:37,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:38,440 INFO L124 PetriNetUnfolderBase]: 439/783 cut-off events. [2024-06-14 13:56:38,440 INFO L125 PetriNetUnfolderBase]: For 58619/58619 co-relation queries the response was YES. [2024-06-14 13:56:38,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 783 events. 439/783 cut-off events. For 58619/58619 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3605 event pairs, 74 based on Foata normal form. 2/785 useless extension candidates. Maximal degree in co-relation 5319. Up to 691 conditions per place. [2024-06-14 13:56:38,449 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 155 selfloop transitions, 27 changer transitions 0/184 dead transitions. [2024-06-14 13:56:38,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 184 transitions, 2162 flow [2024-06-14 13:56:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:56:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:56:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 13:56:38,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 13:56:38,451 INFO L175 Difference]: Start difference. First operand has 195 places, 163 transitions, 1672 flow. Second operand 10 states and 111 transitions. [2024-06-14 13:56:38,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 184 transitions, 2162 flow [2024-06-14 13:56:38,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 184 transitions, 2082 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:38,640 INFO L231 Difference]: Finished difference. Result has 198 places, 165 transitions, 1715 flow [2024-06-14 13:56:38,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1715, PETRI_PLACES=198, PETRI_TRANSITIONS=165} [2024-06-14 13:56:38,640 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-14 13:56:38,640 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 165 transitions, 1715 flow [2024-06-14 13:56:38,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:38,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:38,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:38,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 13:56:38,641 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)] === [2024-06-14 13:56:38,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash 635625931, now seen corresponding path program 8 times [2024-06-14 13:56:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:38,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152480681] [2024-06-14 13:56:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:38,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:42,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152480681] [2024-06-14 13:56:42,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152480681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:42,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:42,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:56:42,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350595790] [2024-06-14 13:56:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:42,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:56:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:56:42,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:56:42,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:42,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 165 transitions, 1715 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:42,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:42,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:42,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:43,451 INFO L124 PetriNetUnfolderBase]: 443/791 cut-off events. [2024-06-14 13:56:43,451 INFO L125 PetriNetUnfolderBase]: For 60393/60393 co-relation queries the response was YES. [2024-06-14 13:56:43,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5493 conditions, 791 events. 443/791 cut-off events. For 60393/60393 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3683 event pairs, 66 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 5393. Up to 689 conditions per place. [2024-06-14 13:56:43,460 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 27 changer transitions 0/181 dead transitions. [2024-06-14 13:56:43,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 181 transitions, 2160 flow [2024-06-14 13:56:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 13:56:43,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 13:56:43,462 INFO L175 Difference]: Start difference. First operand has 198 places, 165 transitions, 1715 flow. Second operand 9 states and 99 transitions. [2024-06-14 13:56:43,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 181 transitions, 2160 flow [2024-06-14 13:56:43,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 181 transitions, 2059 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 13:56:43,633 INFO L231 Difference]: Finished difference. Result has 199 places, 166 transitions, 1712 flow [2024-06-14 13:56:43,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1712, PETRI_PLACES=199, PETRI_TRANSITIONS=166} [2024-06-14 13:56:43,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-14 13:56:43,634 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 166 transitions, 1712 flow [2024-06-14 13:56:43,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:43,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:43,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:43,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 13:56:43,635 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)] === [2024-06-14 13:56:43,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:43,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1240087791, now seen corresponding path program 9 times [2024-06-14 13:56:43,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:43,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770174165] [2024-06-14 13:56:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:43,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:48,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:48,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770174165] [2024-06-14 13:56:48,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770174165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:48,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:48,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:56:48,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633618273] [2024-06-14 13:56:48,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:48,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:56:48,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:56:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:56:48,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:48,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 166 transitions, 1712 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:48,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:48,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:48,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:48,577 INFO L124 PetriNetUnfolderBase]: 447/799 cut-off events. [2024-06-14 13:56:48,577 INFO L125 PetriNetUnfolderBase]: For 62450/62450 co-relation queries the response was YES. [2024-06-14 13:56:48,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5561 conditions, 799 events. 447/799 cut-off events. For 62450/62450 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3717 event pairs, 64 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 5460. Up to 697 conditions per place. [2024-06-14 13:56:48,584 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 26 changer transitions 0/182 dead transitions. [2024-06-14 13:56:48,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 182 transitions, 2157 flow [2024-06-14 13:56:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:56:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:56:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 13:56:48,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-14 13:56:48,590 INFO L175 Difference]: Start difference. First operand has 199 places, 166 transitions, 1712 flow. Second operand 9 states and 98 transitions. [2024-06-14 13:56:48,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 182 transitions, 2157 flow [2024-06-14 13:56:48,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 182 transitions, 2069 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:48,712 INFO L231 Difference]: Finished difference. Result has 201 places, 167 transitions, 1722 flow [2024-06-14 13:56:48,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1722, PETRI_PLACES=201, PETRI_TRANSITIONS=167} [2024-06-14 13:56:48,712 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-14 13:56:48,712 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 167 transitions, 1722 flow [2024-06-14 13:56:48,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:48,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:48,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:48,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 13:56:48,713 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)] === [2024-06-14 13:56:48,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash 642301285, now seen corresponding path program 1 times [2024-06-14 13:56:48,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:48,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351556952] [2024-06-14 13:56:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:48,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:56:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:56:55,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:56:55,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351556952] [2024-06-14 13:56:55,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351556952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:56:55,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:56:55,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:56:55,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907319742] [2024-06-14 13:56:55,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:56:55,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:56:55,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:56:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:56:55,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:56:55,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:56:55,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 167 transitions, 1722 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:55,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:56:55,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:56:55,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:56:56,266 INFO L124 PetriNetUnfolderBase]: 471/851 cut-off events. [2024-06-14 13:56:56,266 INFO L125 PetriNetUnfolderBase]: For 92820/92820 co-relation queries the response was YES. [2024-06-14 13:56:56,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 851 events. 471/851 cut-off events. For 92820/92820 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4063 event pairs, 80 based on Foata normal form. 14/865 useless extension candidates. Maximal degree in co-relation 5740. Up to 693 conditions per place. [2024-06-14 13:56:56,276 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 153 selfloop transitions, 30 changer transitions 4/189 dead transitions. [2024-06-14 13:56:56,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 189 transitions, 2267 flow [2024-06-14 13:56:56,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:56:56,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:56:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 13:56:56,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 13:56:56,277 INFO L175 Difference]: Start difference. First operand has 201 places, 167 transitions, 1722 flow. Second operand 10 states and 116 transitions. [2024-06-14 13:56:56,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 189 transitions, 2267 flow [2024-06-14 13:56:56,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 189 transitions, 2179 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 13:56:56,509 INFO L231 Difference]: Finished difference. Result has 204 places, 168 transitions, 1763 flow [2024-06-14 13:56:56,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1763, PETRI_PLACES=204, PETRI_TRANSITIONS=168} [2024-06-14 13:56:56,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-14 13:56:56,510 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 168 transitions, 1763 flow [2024-06-14 13:56:56,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:56:56,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:56:56,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:56:56,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 13:56:56,511 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)] === [2024-06-14 13:56:56,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:56:56,512 INFO L85 PathProgramCache]: Analyzing trace with hash -878827739, now seen corresponding path program 2 times [2024-06-14 13:56:56,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:56:56,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716992053] [2024-06-14 13:56:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:56:56,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:56:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:01,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716992053] [2024-06-14 13:57:01,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716992053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:01,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:01,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:57:01,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408399778] [2024-06-14 13:57:01,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:01,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:57:01,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:01,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:57:01,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:57:01,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:01,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 168 transitions, 1763 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:01,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:01,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:01,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:02,307 INFO L124 PetriNetUnfolderBase]: 481/867 cut-off events. [2024-06-14 13:57:02,308 INFO L125 PetriNetUnfolderBase]: For 72124/72124 co-relation queries the response was YES. [2024-06-14 13:57:02,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6172 conditions, 867 events. 481/867 cut-off events. For 72124/72124 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4154 event pairs, 67 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 6069. Up to 646 conditions per place. [2024-06-14 13:57:02,314 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 52 changer transitions 0/190 dead transitions. [2024-06-14 13:57:02,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 190 transitions, 2474 flow [2024-06-14 13:57:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 13:57:02,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 13:57:02,316 INFO L175 Difference]: Start difference. First operand has 204 places, 168 transitions, 1763 flow. Second operand 10 states and 113 transitions. [2024-06-14 13:57:02,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 190 transitions, 2474 flow [2024-06-14 13:57:02,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 190 transitions, 2372 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 13:57:02,472 INFO L231 Difference]: Finished difference. Result has 206 places, 172 transitions, 1903 flow [2024-06-14 13:57:02,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1903, PETRI_PLACES=206, PETRI_TRANSITIONS=172} [2024-06-14 13:57:02,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-14 13:57:02,472 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 172 transitions, 1903 flow [2024-06-14 13:57:02,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:02,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:02,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:02,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 13:57:02,473 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)] === [2024-06-14 13:57:02,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:02,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1240272365, now seen corresponding path program 3 times [2024-06-14 13:57:02,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:02,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116435611] [2024-06-14 13:57:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:02,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:07,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:07,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116435611] [2024-06-14 13:57:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116435611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:07,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:57:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113501366] [2024-06-14 13:57:07,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:07,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:57:07,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:57:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:57:07,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:07,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 172 transitions, 1903 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:07,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:07,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:07,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:07,926 INFO L124 PetriNetUnfolderBase]: 487/877 cut-off events. [2024-06-14 13:57:07,926 INFO L125 PetriNetUnfolderBase]: For 74115/74115 co-relation queries the response was YES. [2024-06-14 13:57:07,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6303 conditions, 877 events. 487/877 cut-off events. For 74115/74115 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4200 event pairs, 73 based on Foata normal form. 2/879 useless extension candidates. Maximal degree in co-relation 6199. Up to 765 conditions per place. [2024-06-14 13:57:07,933 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 30 changer transitions 0/191 dead transitions. [2024-06-14 13:57:07,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 191 transitions, 2410 flow [2024-06-14 13:57:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 13:57:07,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 13:57:07,934 INFO L175 Difference]: Start difference. First operand has 206 places, 172 transitions, 1903 flow. Second operand 10 states and 109 transitions. [2024-06-14 13:57:07,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 191 transitions, 2410 flow [2024-06-14 13:57:08,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 191 transitions, 2273 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-14 13:57:08,085 INFO L231 Difference]: Finished difference. Result has 210 places, 174 transitions, 1903 flow [2024-06-14 13:57:08,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1903, PETRI_PLACES=210, PETRI_TRANSITIONS=174} [2024-06-14 13:57:08,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-14 13:57:08,086 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 174 transitions, 1903 flow [2024-06-14 13:57:08,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:08,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:08,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:08,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 13:57:08,087 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)] === [2024-06-14 13:57:08,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:08,087 INFO L85 PathProgramCache]: Analyzing trace with hash 642292605, now seen corresponding path program 4 times [2024-06-14 13:57:08,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:08,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768667495] [2024-06-14 13:57:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:08,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:13,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768667495] [2024-06-14 13:57:13,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768667495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:13,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:13,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:57:13,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653051133] [2024-06-14 13:57:13,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:13,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:57:13,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:57:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:57:13,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:13,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 174 transitions, 1903 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:13,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:13,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:13,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:14,070 INFO L124 PetriNetUnfolderBase]: 493/887 cut-off events. [2024-06-14 13:57:14,070 INFO L125 PetriNetUnfolderBase]: For 75466/75466 co-relation queries the response was YES. [2024-06-14 13:57:14,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6353 conditions, 887 events. 493/887 cut-off events. For 75466/75466 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4269 event pairs, 71 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 6247. Up to 658 conditions per place. [2024-06-14 13:57:14,077 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 56 changer transitions 0/194 dead transitions. [2024-06-14 13:57:14,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 194 transitions, 2558 flow [2024-06-14 13:57:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 13:57:14,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 13:57:14,078 INFO L175 Difference]: Start difference. First operand has 210 places, 174 transitions, 1903 flow. Second operand 10 states and 113 transitions. [2024-06-14 13:57:14,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 194 transitions, 2558 flow [2024-06-14 13:57:14,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 194 transitions, 2459 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 13:57:14,216 INFO L231 Difference]: Finished difference. Result has 212 places, 176 transitions, 1981 flow [2024-06-14 13:57:14,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1981, PETRI_PLACES=212, PETRI_TRANSITIONS=176} [2024-06-14 13:57:14,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-14 13:57:14,217 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 176 transitions, 1981 flow [2024-06-14 13:57:14,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:14,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:14,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:14,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 13:57:14,217 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)] === [2024-06-14 13:57:14,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash -879073693, now seen corresponding path program 10 times [2024-06-14 13:57:14,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:14,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931226518] [2024-06-14 13:57:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:17,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:17,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931226518] [2024-06-14 13:57:17,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931226518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:17,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:17,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:57:17,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337884632] [2024-06-14 13:57:17,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:17,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:57:17,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:17,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:57:17,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:57:17,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:17,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 176 transitions, 1981 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:17,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:17,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:17,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:18,015 INFO L124 PetriNetUnfolderBase]: 497/895 cut-off events. [2024-06-14 13:57:18,015 INFO L125 PetriNetUnfolderBase]: For 77942/77942 co-relation queries the response was YES. [2024-06-14 13:57:18,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6517 conditions, 895 events. 497/895 cut-off events. For 77942/77942 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4331 event pairs, 73 based on Foata normal form. 2/897 useless extension candidates. Maximal degree in co-relation 6410. Up to 763 conditions per place. [2024-06-14 13:57:18,030 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 156 selfloop transitions, 34 changer transitions 0/192 dead transitions. [2024-06-14 13:57:18,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 192 transitions, 2452 flow [2024-06-14 13:57:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:57:18,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:57:18,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 13:57:18,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 13:57:18,039 INFO L175 Difference]: Start difference. First operand has 212 places, 176 transitions, 1981 flow. Second operand 9 states and 100 transitions. [2024-06-14 13:57:18,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 192 transitions, 2452 flow [2024-06-14 13:57:18,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 192 transitions, 2325 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 13:57:18,183 INFO L231 Difference]: Finished difference. Result has 214 places, 177 transitions, 1970 flow [2024-06-14 13:57:18,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1970, PETRI_PLACES=214, PETRI_TRANSITIONS=177} [2024-06-14 13:57:18,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-14 13:57:18,183 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 177 transitions, 1970 flow [2024-06-14 13:57:18,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:18,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:18,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:18,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 13:57:18,184 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)] === [2024-06-14 13:57:18,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:18,184 INFO L85 PathProgramCache]: Analyzing trace with hash 642061965, now seen corresponding path program 5 times [2024-06-14 13:57:18,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:18,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535075774] [2024-06-14 13:57:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:18,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:22,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:22,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535075774] [2024-06-14 13:57:22,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535075774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:22,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:22,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:57:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742614087] [2024-06-14 13:57:22,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:22,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:57:22,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:22,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:57:22,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:57:22,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:22,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 177 transitions, 1970 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:22,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:22,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:22,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:23,481 INFO L124 PetriNetUnfolderBase]: 493/889 cut-off events. [2024-06-14 13:57:23,482 INFO L125 PetriNetUnfolderBase]: For 73705/73705 co-relation queries the response was YES. [2024-06-14 13:57:23,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6262 conditions, 889 events. 493/889 cut-off events. For 73705/73705 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4309 event pairs, 70 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 6154. Up to 663 conditions per place. [2024-06-14 13:57:23,489 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 141 selfloop transitions, 51 changer transitions 0/194 dead transitions. [2024-06-14 13:57:23,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 194 transitions, 2415 flow [2024-06-14 13:57:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 13:57:23,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 13:57:23,490 INFO L175 Difference]: Start difference. First operand has 214 places, 177 transitions, 1970 flow. Second operand 10 states and 114 transitions. [2024-06-14 13:57:23,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 194 transitions, 2415 flow [2024-06-14 13:57:23,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 194 transitions, 2277 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-14 13:57:23,617 INFO L231 Difference]: Finished difference. Result has 217 places, 177 transitions, 1939 flow [2024-06-14 13:57:23,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1939, PETRI_PLACES=217, PETRI_TRANSITIONS=177} [2024-06-14 13:57:23,617 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-14 13:57:23,617 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 177 transitions, 1939 flow [2024-06-14 13:57:23,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:23,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:23,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:23,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 13:57:23,618 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)] === [2024-06-14 13:57:23,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:23,618 INFO L85 PathProgramCache]: Analyzing trace with hash -325600629, now seen corresponding path program 11 times [2024-06-14 13:57:23,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:23,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593399313] [2024-06-14 13:57:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:23,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:26,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:26,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593399313] [2024-06-14 13:57:26,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593399313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:26,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:26,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:57:26,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268288946] [2024-06-14 13:57:26,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:26,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:57:26,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:26,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:57:26,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:57:26,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:26,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 177 transitions, 1939 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:26,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:26,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:26,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:27,143 INFO L124 PetriNetUnfolderBase]: 497/896 cut-off events. [2024-06-14 13:57:27,143 INFO L125 PetriNetUnfolderBase]: For 75327/75327 co-relation queries the response was YES. [2024-06-14 13:57:27,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6316 conditions, 896 events. 497/896 cut-off events. For 75327/75327 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4343 event pairs, 88 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 6207. Up to 863 conditions per place. [2024-06-14 13:57:27,151 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 173 selfloop transitions, 14 changer transitions 0/189 dead transitions. [2024-06-14 13:57:27,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 189 transitions, 2388 flow [2024-06-14 13:57:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:57:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:57:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-14 13:57:27,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 13:57:27,153 INFO L175 Difference]: Start difference. First operand has 217 places, 177 transitions, 1939 flow. Second operand 9 states and 90 transitions. [2024-06-14 13:57:27,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 189 transitions, 2388 flow [2024-06-14 13:57:27,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 189 transitions, 2229 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 13:57:27,304 INFO L231 Difference]: Finished difference. Result has 216 places, 178 transitions, 1858 flow [2024-06-14 13:57:27,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1858, PETRI_PLACES=216, PETRI_TRANSITIONS=178} [2024-06-14 13:57:27,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-14 13:57:27,305 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 178 transitions, 1858 flow [2024-06-14 13:57:27,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:27,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:27,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:27,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 13:57:27,306 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)] === [2024-06-14 13:57:27,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:27,306 INFO L85 PathProgramCache]: Analyzing trace with hash -325593685, now seen corresponding path program 6 times [2024-06-14 13:57:27,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:27,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907462712] [2024-06-14 13:57:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:27,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:32,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:32,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907462712] [2024-06-14 13:57:32,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907462712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:32,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:32,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:57:32,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121599439] [2024-06-14 13:57:32,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:32,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:57:32,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:32,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:57:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:57:32,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:32,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 178 transitions, 1858 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:32,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:32,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:32,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:33,025 INFO L124 PetriNetUnfolderBase]: 503/906 cut-off events. [2024-06-14 13:57:33,025 INFO L125 PetriNetUnfolderBase]: For 77365/77365 co-relation queries the response was YES. [2024-06-14 13:57:33,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6253 conditions, 906 events. 503/906 cut-off events. For 77365/77365 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4407 event pairs, 83 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 6143. Up to 798 conditions per place. [2024-06-14 13:57:33,032 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 32 changer transitions 0/195 dead transitions. [2024-06-14 13:57:33,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 195 transitions, 2505 flow [2024-06-14 13:57:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 13:57:33,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 13:57:33,033 INFO L175 Difference]: Start difference. First operand has 216 places, 178 transitions, 1858 flow. Second operand 10 states and 110 transitions. [2024-06-14 13:57:33,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 195 transitions, 2505 flow [2024-06-14 13:57:33,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 195 transitions, 2437 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 13:57:33,208 INFO L231 Difference]: Finished difference. Result has 219 places, 180 transitions, 1913 flow [2024-06-14 13:57:33,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1913, PETRI_PLACES=219, PETRI_TRANSITIONS=180} [2024-06-14 13:57:33,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-14 13:57:33,208 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 180 transitions, 1913 flow [2024-06-14 13:57:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:33,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:33,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:33,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 13:57:33,209 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)] === [2024-06-14 13:57:33,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:33,209 INFO L85 PathProgramCache]: Analyzing trace with hash 343391363, now seen corresponding path program 2 times [2024-06-14 13:57:33,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:33,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305395121] [2024-06-14 13:57:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:38,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:38,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305395121] [2024-06-14 13:57:38,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305395121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:38,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:38,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:57:38,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761269515] [2024-06-14 13:57:38,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:38,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:57:38,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:57:38,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:57:38,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:38,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 180 transitions, 1913 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:38,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:38,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:38,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:39,069 INFO L124 PetriNetUnfolderBase]: 507/916 cut-off events. [2024-06-14 13:57:39,069 INFO L125 PetriNetUnfolderBase]: For 79212/79214 co-relation queries the response was YES. [2024-06-14 13:57:39,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6342 conditions, 916 events. 507/916 cut-off events. For 79212/79214 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4498 event pairs, 103 based on Foata normal form. 2/918 useless extension candidates. Maximal degree in co-relation 6231. Up to 835 conditions per place. [2024-06-14 13:57:39,077 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 163 selfloop transitions, 26 changer transitions 0/191 dead transitions. [2024-06-14 13:57:39,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 191 transitions, 2349 flow [2024-06-14 13:57:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:39,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:39,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 13:57:39,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-14 13:57:39,079 INFO L175 Difference]: Start difference. First operand has 219 places, 180 transitions, 1913 flow. Second operand 10 states and 104 transitions. [2024-06-14 13:57:39,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 191 transitions, 2349 flow [2024-06-14 13:57:39,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 191 transitions, 2245 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 13:57:39,282 INFO L231 Difference]: Finished difference. Result has 221 places, 181 transitions, 1903 flow [2024-06-14 13:57:39,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1903, PETRI_PLACES=221, PETRI_TRANSITIONS=181} [2024-06-14 13:57:39,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-14 13:57:39,283 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 181 transitions, 1903 flow [2024-06-14 13:57:39,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:39,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:39,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:39,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 13:57:39,284 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)] === [2024-06-14 13:57:39,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash 207249661, now seen corresponding path program 3 times [2024-06-14 13:57:39,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:39,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218702031] [2024-06-14 13:57:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:39,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:43,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:43,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218702031] [2024-06-14 13:57:43,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218702031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:43,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:43,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:57:43,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992196344] [2024-06-14 13:57:43,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:43,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:57:43,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:43,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:57:43,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:57:43,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:43,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 181 transitions, 1903 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:43,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:43,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:43,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:44,136 INFO L124 PetriNetUnfolderBase]: 516/932 cut-off events. [2024-06-14 13:57:44,136 INFO L125 PetriNetUnfolderBase]: For 85003/85005 co-relation queries the response was YES. [2024-06-14 13:57:44,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 932 events. 516/932 cut-off events. For 85003/85005 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4595 event pairs, 94 based on Foata normal form. 2/934 useless extension candidates. Maximal degree in co-relation 6456. Up to 754 conditions per place. [2024-06-14 13:57:44,143 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 135 selfloop transitions, 60 changer transitions 0/197 dead transitions. [2024-06-14 13:57:44,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 197 transitions, 2595 flow [2024-06-14 13:57:44,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:44,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 13:57:44,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 13:57:44,144 INFO L175 Difference]: Start difference. First operand has 221 places, 181 transitions, 1903 flow. Second operand 10 states and 115 transitions. [2024-06-14 13:57:44,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 197 transitions, 2595 flow [2024-06-14 13:57:44,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 197 transitions, 2511 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 13:57:44,355 INFO L231 Difference]: Finished difference. Result has 224 places, 184 transitions, 2085 flow [2024-06-14 13:57:44,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2085, PETRI_PLACES=224, PETRI_TRANSITIONS=184} [2024-06-14 13:57:44,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-14 13:57:44,356 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 184 transitions, 2085 flow [2024-06-14 13:57:44,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:44,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:44,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:44,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 13:57:44,356 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)] === [2024-06-14 13:57:44,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:44,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2062332881, now seen corresponding path program 7 times [2024-06-14 13:57:44,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:44,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871317302] [2024-06-14 13:57:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:44,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:49,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871317302] [2024-06-14 13:57:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871317302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:49,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:49,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:57:49,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202087670] [2024-06-14 13:57:49,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:49,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:57:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:57:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:57:49,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:49,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 184 transitions, 2085 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:49,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:49,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:49,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:50,129 INFO L124 PetriNetUnfolderBase]: 522/940 cut-off events. [2024-06-14 13:57:50,129 INFO L125 PetriNetUnfolderBase]: For 87349/87349 co-relation queries the response was YES. [2024-06-14 13:57:50,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6766 conditions, 940 events. 522/940 cut-off events. For 87349/87349 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4625 event pairs, 83 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 6652. Up to 828 conditions per place. [2024-06-14 13:57:50,137 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 35 changer transitions 0/203 dead transitions. [2024-06-14 13:57:50,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 203 transitions, 2924 flow [2024-06-14 13:57:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:57:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:57:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 13:57:50,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 13:57:50,138 INFO L175 Difference]: Start difference. First operand has 224 places, 184 transitions, 2085 flow. Second operand 10 states and 113 transitions. [2024-06-14 13:57:50,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 203 transitions, 2924 flow [2024-06-14 13:57:50,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 203 transitions, 2800 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 13:57:50,340 INFO L231 Difference]: Finished difference. Result has 227 places, 186 transitions, 2090 flow [2024-06-14 13:57:50,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2090, PETRI_PLACES=227, PETRI_TRANSITIONS=186} [2024-06-14 13:57:50,340 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-14 13:57:50,340 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 186 transitions, 2090 flow [2024-06-14 13:57:50,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:50,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:50,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:50,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 13:57:50,341 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)] === [2024-06-14 13:57:50,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:50,341 INFO L85 PathProgramCache]: Analyzing trace with hash 312818153, now seen corresponding path program 12 times [2024-06-14 13:57:50,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:50,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226289818] [2024-06-14 13:57:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:50,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:53,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:53,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226289818] [2024-06-14 13:57:53,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226289818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:53,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:53,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:57:53,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69194465] [2024-06-14 13:57:53,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:53,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:57:53,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:57:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:57:53,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:57:53,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 186 transitions, 2090 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:53,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:57:53,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:57:53,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:57:54,283 INFO L124 PetriNetUnfolderBase]: 526/950 cut-off events. [2024-06-14 13:57:54,283 INFO L125 PetriNetUnfolderBase]: For 89899/89901 co-relation queries the response was YES. [2024-06-14 13:57:54,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6808 conditions, 950 events. 526/950 cut-off events. For 89899/89901 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4727 event pairs, 80 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 6693. Up to 820 conditions per place. [2024-06-14 13:57:54,291 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 164 selfloop transitions, 34 changer transitions 0/200 dead transitions. [2024-06-14 13:57:54,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 200 transitions, 2576 flow [2024-06-14 13:57:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:57:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:57:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 13:57:54,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 13:57:54,292 INFO L175 Difference]: Start difference. First operand has 227 places, 186 transitions, 2090 flow. Second operand 9 states and 100 transitions. [2024-06-14 13:57:54,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 200 transitions, 2576 flow [2024-06-14 13:57:54,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 200 transitions, 2466 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 13:57:54,470 INFO L231 Difference]: Finished difference. Result has 228 places, 187 transitions, 2100 flow [2024-06-14 13:57:54,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2100, PETRI_PLACES=228, PETRI_TRANSITIONS=187} [2024-06-14 13:57:54,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-14 13:57:54,470 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 187 transitions, 2100 flow [2024-06-14 13:57:54,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:57:54,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:57:54,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:57:54,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 13:57:54,471 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)] === [2024-06-14 13:57:54,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:57:54,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1050109015, now seen corresponding path program 8 times [2024-06-14 13:57:54,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:57:54,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606922378] [2024-06-14 13:57:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:57:54,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:57:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:57:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:57:59,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:57:59,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606922378] [2024-06-14 13:57:59,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606922378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:57:59,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:57:59,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:57:59,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123809282] [2024-06-14 13:57:59,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:57:59,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:57:59,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:57:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:57:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:58:00,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:00,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 187 transitions, 2100 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:00,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:00,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:00,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:00,474 INFO L124 PetriNetUnfolderBase]: 522/942 cut-off events. [2024-06-14 13:58:00,474 INFO L125 PetriNetUnfolderBase]: For 84442/84442 co-relation queries the response was YES. [2024-06-14 13:58:00,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 942 events. 522/942 cut-off events. For 84442/84442 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4679 event pairs, 85 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 6441. Up to 890 conditions per place. [2024-06-14 13:58:00,483 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 20 changer transitions 0/201 dead transitions. [2024-06-14 13:58:00,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 201 transitions, 2547 flow [2024-06-14 13:58:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:58:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:58:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 13:58:00,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-14 13:58:00,484 INFO L175 Difference]: Start difference. First operand has 228 places, 187 transitions, 2100 flow. Second operand 10 states and 103 transitions. [2024-06-14 13:58:00,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 201 transitions, 2547 flow [2024-06-14 13:58:00,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 201 transitions, 2403 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-14 13:58:00,668 INFO L231 Difference]: Finished difference. Result has 231 places, 187 transitions, 2001 flow [2024-06-14 13:58:00,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=231, PETRI_TRANSITIONS=187} [2024-06-14 13:58:00,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-14 13:58:00,669 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 187 transitions, 2001 flow [2024-06-14 13:58:00,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:00,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:00,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:00,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 13:58:00,669 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)] === [2024-06-14 13:58:00,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:00,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2004434379, now seen corresponding path program 4 times [2024-06-14 13:58:00,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:00,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245389296] [2024-06-14 13:58:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:00,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:04,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:04,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245389296] [2024-06-14 13:58:04,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245389296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:04,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:04,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:58:04,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800470528] [2024-06-14 13:58:04,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:04,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:58:04,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:58:04,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:58:04,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:04,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 187 transitions, 2001 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:04,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:04,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:04,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:05,345 INFO L124 PetriNetUnfolderBase]: 533/963 cut-off events. [2024-06-14 13:58:05,345 INFO L125 PetriNetUnfolderBase]: For 93407/93407 co-relation queries the response was YES. [2024-06-14 13:58:05,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6818 conditions, 963 events. 533/963 cut-off events. For 93407/93407 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4785 event pairs, 89 based on Foata normal form. 2/965 useless extension candidates. Maximal degree in co-relation 6702. Up to 905 conditions per place. [2024-06-14 13:58:05,390 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 181 selfloop transitions, 20 changer transitions 0/203 dead transitions. [2024-06-14 13:58:05,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 203 transitions, 2684 flow [2024-06-14 13:58:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:58:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:58:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-14 13:58:05,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-14 13:58:05,391 INFO L175 Difference]: Start difference. First operand has 231 places, 187 transitions, 2001 flow. Second operand 11 states and 107 transitions. [2024-06-14 13:58:05,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 203 transitions, 2684 flow [2024-06-14 13:58:05,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 203 transitions, 2628 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 13:58:05,599 INFO L231 Difference]: Finished difference. Result has 233 places, 189 transitions, 2071 flow [2024-06-14 13:58:05,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2071, PETRI_PLACES=233, PETRI_TRANSITIONS=189} [2024-06-14 13:58:05,599 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-14 13:58:05,599 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 189 transitions, 2071 flow [2024-06-14 13:58:05,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:05,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:05,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:05,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 13:58:05,600 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)] === [2024-06-14 13:58:05,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1767113371, now seen corresponding path program 5 times [2024-06-14 13:58:05,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:05,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146207975] [2024-06-14 13:58:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:05,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:09,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:09,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146207975] [2024-06-14 13:58:09,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146207975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:09,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:09,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:58:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493064758] [2024-06-14 13:58:09,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:09,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:58:09,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:58:09,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:58:09,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:09,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 189 transitions, 2071 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:09,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:09,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:09,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:09,985 INFO L124 PetriNetUnfolderBase]: 537/971 cut-off events. [2024-06-14 13:58:09,985 INFO L125 PetriNetUnfolderBase]: For 96302/96302 co-relation queries the response was YES. [2024-06-14 13:58:09,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6940 conditions, 971 events. 537/971 cut-off events. For 96302/96302 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4855 event pairs, 91 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 6823. Up to 932 conditions per place. [2024-06-14 13:58:09,993 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 19 changer transitions 0/202 dead transitions. [2024-06-14 13:58:09,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 202 transitions, 2542 flow [2024-06-14 13:58:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:58:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:58:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 13:58:09,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-14 13:58:09,994 INFO L175 Difference]: Start difference. First operand has 233 places, 189 transitions, 2071 flow. Second operand 11 states and 106 transitions. [2024-06-14 13:58:09,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 202 transitions, 2542 flow [2024-06-14 13:58:10,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 202 transitions, 2472 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 13:58:10,198 INFO L231 Difference]: Finished difference. Result has 237 places, 190 transitions, 2087 flow [2024-06-14 13:58:10,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2087, PETRI_PLACES=237, PETRI_TRANSITIONS=190} [2024-06-14 13:58:10,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 13:58:10,199 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 190 transitions, 2087 flow [2024-06-14 13:58:10,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:10,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:10,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:10,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 13:58:10,199 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)] === [2024-06-14 13:58:10,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash 845659763, now seen corresponding path program 9 times [2024-06-14 13:58:10,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:10,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916924265] [2024-06-14 13:58:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:10,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:16,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:16,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916924265] [2024-06-14 13:58:16,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916924265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:16,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:16,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:58:16,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703573198] [2024-06-14 13:58:16,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:16,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:58:16,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:58:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:58:17,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:17,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 190 transitions, 2087 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:17,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:17,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:17,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:17,635 INFO L124 PetriNetUnfolderBase]: 543/983 cut-off events. [2024-06-14 13:58:17,635 INFO L125 PetriNetUnfolderBase]: For 98634/98636 co-relation queries the response was YES. [2024-06-14 13:58:17,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7020 conditions, 983 events. 543/983 cut-off events. For 98634/98636 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4972 event pairs, 96 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 6901. Up to 556 conditions per place. [2024-06-14 13:58:17,642 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 89 changer transitions 0/208 dead transitions. [2024-06-14 13:58:17,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 208 transitions, 2801 flow [2024-06-14 13:58:17,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:58:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:58:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 13:58:17,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 13:58:17,644 INFO L175 Difference]: Start difference. First operand has 237 places, 190 transitions, 2087 flow. Second operand 10 states and 118 transitions. [2024-06-14 13:58:17,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 208 transitions, 2801 flow [2024-06-14 13:58:17,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 208 transitions, 2731 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 13:58:17,843 INFO L231 Difference]: Finished difference. Result has 238 places, 192 transitions, 2272 flow [2024-06-14 13:58:17,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2272, PETRI_PLACES=238, PETRI_TRANSITIONS=192} [2024-06-14 13:58:17,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-14 13:58:17,844 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 192 transitions, 2272 flow [2024-06-14 13:58:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:17,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:17,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 13:58:17,844 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)] === [2024-06-14 13:58:17,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:17,848 INFO L85 PathProgramCache]: Analyzing trace with hash 313064107, now seen corresponding path program 10 times [2024-06-14 13:58:17,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:17,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19768618] [2024-06-14 13:58:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:17,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:22,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:22,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19768618] [2024-06-14 13:58:22,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19768618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:22,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:22,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:58:22,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920206531] [2024-06-14 13:58:22,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:22,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:58:22,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:22,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:58:22,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:58:22,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:22,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 192 transitions, 2272 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:22,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:22,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:22,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:23,481 INFO L124 PetriNetUnfolderBase]: 554/1001 cut-off events. [2024-06-14 13:58:23,481 INFO L125 PetriNetUnfolderBase]: For 105611/105613 co-relation queries the response was YES. [2024-06-14 13:58:23,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1001 events. 554/1001 cut-off events. For 105611/105613 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5058 event pairs, 84 based on Foata normal form. 2/1003 useless extension candidates. Maximal degree in co-relation 7380. Up to 820 conditions per place. [2024-06-14 13:58:23,490 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 48 changer transitions 0/214 dead transitions. [2024-06-14 13:58:23,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 214 transitions, 3088 flow [2024-06-14 13:58:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:58:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:58:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 13:58:23,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 13:58:23,492 INFO L175 Difference]: Start difference. First operand has 238 places, 192 transitions, 2272 flow. Second operand 11 states and 122 transitions. [2024-06-14 13:58:23,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 214 transitions, 3088 flow [2024-06-14 13:58:23,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 214 transitions, 2839 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 13:58:23,750 INFO L231 Difference]: Finished difference. Result has 241 places, 196 transitions, 2283 flow [2024-06-14 13:58:23,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2283, PETRI_PLACES=241, PETRI_TRANSITIONS=196} [2024-06-14 13:58:23,750 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-14 13:58:23,750 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 196 transitions, 2283 flow [2024-06-14 13:58:23,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:23,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:23,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:23,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 13:58:23,751 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)] === [2024-06-14 13:58:23,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash 313064417, now seen corresponding path program 6 times [2024-06-14 13:58:23,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:23,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090742563] [2024-06-14 13:58:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:23,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:28,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:28,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090742563] [2024-06-14 13:58:28,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090742563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:28,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:28,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319373776] [2024-06-14 13:58:28,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:28,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:28,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:28,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:29,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:29,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 196 transitions, 2283 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:29,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:29,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:29,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:29,808 INFO L124 PetriNetUnfolderBase]: 551/996 cut-off events. [2024-06-14 13:58:29,808 INFO L125 PetriNetUnfolderBase]: For 99033/99035 co-relation queries the response was YES. [2024-06-14 13:58:29,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 996 events. 551/996 cut-off events. For 99033/99035 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5038 event pairs, 99 based on Foata normal form. 2/998 useless extension candidates. Maximal degree in co-relation 7005. Up to 897 conditions per place. [2024-06-14 13:58:29,821 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 35 changer transitions 0/208 dead transitions. [2024-06-14 13:58:29,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 208 transitions, 2725 flow [2024-06-14 13:58:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:58:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:58:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 13:58:29,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-14 13:58:29,823 INFO L175 Difference]: Start difference. First operand has 241 places, 196 transitions, 2283 flow. Second operand 11 states and 114 transitions. [2024-06-14 13:58:29,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 208 transitions, 2725 flow [2024-06-14 13:58:30,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 208 transitions, 2588 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-14 13:58:30,208 INFO L231 Difference]: Finished difference. Result has 244 places, 196 transitions, 2220 flow [2024-06-14 13:58:30,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2220, PETRI_PLACES=244, PETRI_TRANSITIONS=196} [2024-06-14 13:58:30,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 13:58:30,209 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 196 transitions, 2220 flow [2024-06-14 13:58:30,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:30,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:30,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:30,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 13:58:30,210 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:58:30,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:30,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1777233011, now seen corresponding path program 11 times [2024-06-14 13:58:30,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:30,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88936785] [2024-06-14 13:58:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:30,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:37,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88936785] [2024-06-14 13:58:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88936785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:37,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:37,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:58:37,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126430791] [2024-06-14 13:58:37,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:37,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:58:37,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:37,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:58:37,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:58:37,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:37,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 196 transitions, 2220 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:37,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:37,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:37,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:37,902 INFO L124 PetriNetUnfolderBase]: 547/988 cut-off events. [2024-06-14 13:58:37,903 INFO L125 PetriNetUnfolderBase]: For 90018/90018 co-relation queries the response was YES. [2024-06-14 13:58:37,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6834 conditions, 988 events. 547/988 cut-off events. For 90018/90018 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4960 event pairs, 95 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 6712. Up to 933 conditions per place. [2024-06-14 13:58:37,916 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 22 changer transitions 0/209 dead transitions. [2024-06-14 13:58:37,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 209 transitions, 2673 flow [2024-06-14 13:58:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:58:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:58:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 13:58:37,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 13:58:37,918 INFO L175 Difference]: Start difference. First operand has 244 places, 196 transitions, 2220 flow. Second operand 11 states and 110 transitions. [2024-06-14 13:58:37,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 209 transitions, 2673 flow [2024-06-14 13:58:38,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 209 transitions, 2512 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-14 13:58:38,185 INFO L231 Difference]: Finished difference. Result has 244 places, 196 transitions, 2109 flow [2024-06-14 13:58:38,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2109, PETRI_PLACES=244, PETRI_TRANSITIONS=196} [2024-06-14 13:58:38,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 13:58:38,185 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 196 transitions, 2109 flow [2024-06-14 13:58:38,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:38,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:38,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:38,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 13:58:38,186 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)] === [2024-06-14 13:58:38,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:38,186 INFO L85 PathProgramCache]: Analyzing trace with hash -40254495, now seen corresponding path program 7 times [2024-06-14 13:58:38,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:38,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548850112] [2024-06-14 13:58:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:38,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:43,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548850112] [2024-06-14 13:58:43,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548850112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:43,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:43,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:58:43,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443459742] [2024-06-14 13:58:43,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:43,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:58:43,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:58:43,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:58:43,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:43,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 196 transitions, 2109 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:43,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:43,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:43,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:44,087 INFO L124 PetriNetUnfolderBase]: 544/983 cut-off events. [2024-06-14 13:58:44,088 INFO L125 PetriNetUnfolderBase]: For 82819/82819 co-relation queries the response was YES. [2024-06-14 13:58:44,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6445 conditions, 983 events. 544/983 cut-off events. For 82819/82819 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4950 event pairs, 93 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 6324. Up to 938 conditions per place. [2024-06-14 13:58:44,096 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 20 changer transitions 0/208 dead transitions. [2024-06-14 13:58:44,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 208 transitions, 2550 flow [2024-06-14 13:58:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:58:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:58:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 13:58:44,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-14 13:58:44,097 INFO L175 Difference]: Start difference. First operand has 244 places, 196 transitions, 2109 flow. Second operand 11 states and 106 transitions. [2024-06-14 13:58:44,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 208 transitions, 2550 flow [2024-06-14 13:58:44,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 208 transitions, 2464 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-14 13:58:44,301 INFO L231 Difference]: Finished difference. Result has 245 places, 196 transitions, 2069 flow [2024-06-14 13:58:44,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2023, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2069, PETRI_PLACES=245, PETRI_TRANSITIONS=196} [2024-06-14 13:58:44,301 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-14 13:58:44,301 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 196 transitions, 2069 flow [2024-06-14 13:58:44,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:44,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:44,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:44,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 13:58:44,302 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)] === [2024-06-14 13:58:44,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1424153109, now seen corresponding path program 12 times [2024-06-14 13:58:44,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:44,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235335103] [2024-06-14 13:58:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:44,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:49,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:49,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235335103] [2024-06-14 13:58:49,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235335103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:49,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:49,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:58:49,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349358946] [2024-06-14 13:58:49,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:49,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:58:49,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:49,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:58:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:58:49,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:49,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 196 transitions, 2069 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:49,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:49,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:49,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:50,398 INFO L124 PetriNetUnfolderBase]: 550/995 cut-off events. [2024-06-14 13:58:50,398 INFO L125 PetriNetUnfolderBase]: For 84214/84216 co-relation queries the response was YES. [2024-06-14 13:58:50,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6482 conditions, 995 events. 550/995 cut-off events. For 84214/84216 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5062 event pairs, 81 based on Foata normal form. 2/997 useless extension candidates. Maximal degree in co-relation 6360. Up to 810 conditions per place. [2024-06-14 13:58:50,406 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 165 selfloop transitions, 45 changer transitions 0/212 dead transitions. [2024-06-14 13:58:50,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 212 transitions, 2779 flow [2024-06-14 13:58:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:58:50,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:58:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 13:58:50,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-14 13:58:50,407 INFO L175 Difference]: Start difference. First operand has 245 places, 196 transitions, 2069 flow. Second operand 9 states and 107 transitions. [2024-06-14 13:58:50,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 212 transitions, 2779 flow [2024-06-14 13:58:50,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 212 transitions, 2733 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 13:58:50,620 INFO L231 Difference]: Finished difference. Result has 244 places, 198 transitions, 2181 flow [2024-06-14 13:58:50,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2181, PETRI_PLACES=244, PETRI_TRANSITIONS=198} [2024-06-14 13:58:50,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 13:58:50,621 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 198 transitions, 2181 flow [2024-06-14 13:58:50,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:50,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:50,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:50,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 13:58:50,621 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)] === [2024-06-14 13:58:50,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash 306389063, now seen corresponding path program 13 times [2024-06-14 13:58:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:50,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388411327] [2024-06-14 13:58:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:50,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:54,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:54,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388411327] [2024-06-14 13:58:54,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388411327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:54,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:54,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:58:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972192801] [2024-06-14 13:58:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:54,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:58:54,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:54,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:58:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:58:55,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:55,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 198 transitions, 2181 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:55,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:55,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:55,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:55,457 INFO L124 PetriNetUnfolderBase]: 554/1003 cut-off events. [2024-06-14 13:58:55,457 INFO L125 PetriNetUnfolderBase]: For 85488/85490 co-relation queries the response was YES. [2024-06-14 13:58:55,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6666 conditions, 1003 events. 554/1003 cut-off events. For 85488/85490 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5094 event pairs, 87 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 6543. Up to 882 conditions per place. [2024-06-14 13:58:55,466 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 178 selfloop transitions, 31 changer transitions 0/211 dead transitions. [2024-06-14 13:58:55,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 211 transitions, 2685 flow [2024-06-14 13:58:55,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:58:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:58:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 13:58:55,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 13:58:55,468 INFO L175 Difference]: Start difference. First operand has 244 places, 198 transitions, 2181 flow. Second operand 9 states and 97 transitions. [2024-06-14 13:58:55,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 211 transitions, 2685 flow [2024-06-14 13:58:55,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 211 transitions, 2558 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 13:58:55,705 INFO L231 Difference]: Finished difference. Result has 246 places, 199 transitions, 2170 flow [2024-06-14 13:58:55,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2170, PETRI_PLACES=246, PETRI_TRANSITIONS=199} [2024-06-14 13:58:55,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-14 13:58:55,705 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 199 transitions, 2170 flow [2024-06-14 13:58:55,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:55,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:58:55,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:58:55,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 13:58:55,706 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)] === [2024-06-14 13:58:55,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:58:55,706 INFO L85 PathProgramCache]: Analyzing trace with hash 306384413, now seen corresponding path program 14 times [2024-06-14 13:58:55,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:58:55,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6771714] [2024-06-14 13:58:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:58:55,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:58:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:58:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:58:59,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:58:59,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6771714] [2024-06-14 13:58:59,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6771714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:58:59,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:58:59,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:58:59,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907756533] [2024-06-14 13:58:59,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:58:59,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:58:59,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:58:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:58:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:58:59,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:58:59,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 199 transitions, 2170 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:58:59,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:58:59,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:58:59,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:58:59,851 INFO L124 PetriNetUnfolderBase]: 551/998 cut-off events. [2024-06-14 13:58:59,851 INFO L125 PetriNetUnfolderBase]: For 76994/76996 co-relation queries the response was YES. [2024-06-14 13:58:59,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6347 conditions, 998 events. 551/998 cut-off events. For 76994/76996 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5073 event pairs, 84 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 6224. Up to 877 conditions per place. [2024-06-14 13:58:59,865 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 179 selfloop transitions, 30 changer transitions 0/211 dead transitions. [2024-06-14 13:58:59,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 211 transitions, 2622 flow [2024-06-14 13:58:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:58:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:58:59,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 13:58:59,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 13:58:59,867 INFO L175 Difference]: Start difference. First operand has 246 places, 199 transitions, 2170 flow. Second operand 9 states and 96 transitions. [2024-06-14 13:58:59,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 211 transitions, 2622 flow [2024-06-14 13:59:00,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 211 transitions, 2516 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 13:59:00,126 INFO L231 Difference]: Finished difference. Result has 248 places, 199 transitions, 2128 flow [2024-06-14 13:59:00,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2128, PETRI_PLACES=248, PETRI_TRANSITIONS=199} [2024-06-14 13:59:00,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-14 13:59:00,126 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 199 transitions, 2128 flow [2024-06-14 13:59:00,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:00,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:00,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:00,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 13:59:00,127 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)] === [2024-06-14 13:59:00,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash 306568987, now seen corresponding path program 13 times [2024-06-14 13:59:00,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:00,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241981430] [2024-06-14 13:59:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:00,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:05,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:05,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241981430] [2024-06-14 13:59:05,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241981430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:05,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:05,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:59:05,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37743183] [2024-06-14 13:59:05,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:05,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:59:05,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:05,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:59:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:59:05,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:59:05,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 199 transitions, 2128 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:05,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:05,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:59:05,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:05,933 INFO L124 PetriNetUnfolderBase]: 547/992 cut-off events. [2024-06-14 13:59:05,933 INFO L125 PetriNetUnfolderBase]: For 69252/69254 co-relation queries the response was YES. [2024-06-14 13:59:05,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 992 events. 547/992 cut-off events. For 69252/69254 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5037 event pairs, 86 based on Foata normal form. 2/994 useless extension candidates. Maximal degree in co-relation 5921. Up to 861 conditions per place. [2024-06-14 13:59:05,942 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 177 selfloop transitions, 34 changer transitions 0/213 dead transitions. [2024-06-14 13:59:05,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 213 transitions, 2600 flow [2024-06-14 13:59:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:59:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:59:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 13:59:05,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 13:59:05,952 INFO L175 Difference]: Start difference. First operand has 248 places, 199 transitions, 2128 flow. Second operand 10 states and 107 transitions. [2024-06-14 13:59:05,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 213 transitions, 2600 flow [2024-06-14 13:59:06,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 213 transitions, 2411 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-14 13:59:06,147 INFO L231 Difference]: Finished difference. Result has 250 places, 199 transitions, 2012 flow [2024-06-14 13:59:06,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2012, PETRI_PLACES=250, PETRI_TRANSITIONS=199} [2024-06-14 13:59:06,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-14 13:59:06,148 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 199 transitions, 2012 flow [2024-06-14 13:59:06,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:06,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:06,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:06,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 13:59:06,148 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)] === [2024-06-14 13:59:06,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1315265807, now seen corresponding path program 1 times [2024-06-14 13:59:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:06,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668333766] [2024-06-14 13:59:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:06,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:11,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:11,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668333766] [2024-06-14 13:59:11,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668333766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:11,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:11,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:11,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528301359] [2024-06-14 13:59:11,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:11,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:11,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:11,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:11,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:59:11,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 199 transitions, 2012 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:11,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:11,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:59:11,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:12,409 INFO L124 PetriNetUnfolderBase]: 603/1098 cut-off events. [2024-06-14 13:59:12,409 INFO L125 PetriNetUnfolderBase]: For 69797/69797 co-relation queries the response was YES. [2024-06-14 13:59:12,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6365 conditions, 1098 events. 603/1098 cut-off events. For 69797/69797 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5694 event pairs, 109 based on Foata normal form. 2/1100 useless extension candidates. Maximal degree in co-relation 6240. Up to 951 conditions per place. [2024-06-14 13:59:12,419 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 29 changer transitions 0/239 dead transitions. [2024-06-14 13:59:12,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 239 transitions, 2738 flow [2024-06-14 13:59:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:59:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:59:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 13:59:12,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-14 13:59:12,420 INFO L175 Difference]: Start difference. First operand has 250 places, 199 transitions, 2012 flow. Second operand 11 states and 117 transitions. [2024-06-14 13:59:12,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 239 transitions, 2738 flow [2024-06-14 13:59:12,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 239 transitions, 2643 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 13:59:12,622 INFO L231 Difference]: Finished difference. Result has 257 places, 215 transitions, 2176 flow [2024-06-14 13:59:12,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2176, PETRI_PLACES=257, PETRI_TRANSITIONS=215} [2024-06-14 13:59:12,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-14 13:59:12,623 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 215 transitions, 2176 flow [2024-06-14 13:59:12,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:12,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:12,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:12,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 13:59:12,624 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)] === [2024-06-14 13:59:12,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1184575547, now seen corresponding path program 2 times [2024-06-14 13:59:12,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:12,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883716257] [2024-06-14 13:59:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:12,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:18,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:18,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883716257] [2024-06-14 13:59:18,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883716257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:18,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:18,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:18,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840163991] [2024-06-14 13:59:18,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:18,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:18,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:18,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:18,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:59:18,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 215 transitions, 2176 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:18,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:18,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:59:18,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:19,380 INFO L124 PetriNetUnfolderBase]: 635/1161 cut-off events. [2024-06-14 13:59:19,381 INFO L125 PetriNetUnfolderBase]: For 71677/71677 co-relation queries the response was YES. [2024-06-14 13:59:19,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6740 conditions, 1161 events. 635/1161 cut-off events. For 71677/71677 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6140 event pairs, 104 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 6609. Up to 961 conditions per place. [2024-06-14 13:59:19,392 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 37 changer transitions 0/249 dead transitions. [2024-06-14 13:59:19,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 249 transitions, 2883 flow [2024-06-14 13:59:19,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:59:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:59:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 13:59:19,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-14 13:59:19,393 INFO L175 Difference]: Start difference. First operand has 257 places, 215 transitions, 2176 flow. Second operand 11 states and 117 transitions. [2024-06-14 13:59:19,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 249 transitions, 2883 flow [2024-06-14 13:59:19,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 249 transitions, 2829 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-14 13:59:19,597 INFO L231 Difference]: Finished difference. Result has 271 places, 225 transitions, 2368 flow [2024-06-14 13:59:19,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2368, PETRI_PLACES=271, PETRI_TRANSITIONS=225} [2024-06-14 13:59:19,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-14 13:59:19,598 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 225 transitions, 2368 flow [2024-06-14 13:59:19,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:19,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:19,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:19,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 13:59:19,599 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)] === [2024-06-14 13:59:19,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2055420863, now seen corresponding path program 3 times [2024-06-14 13:59:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:19,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430346210] [2024-06-14 13:59:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:19,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:24,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:24,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430346210] [2024-06-14 13:59:24,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430346210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:24,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:24,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:24,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872386310] [2024-06-14 13:59:24,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:24,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:24,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:24,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:59:24,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 225 transitions, 2368 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:24,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:24,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:59:24,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:25,006 INFO L124 PetriNetUnfolderBase]: 639/1169 cut-off events. [2024-06-14 13:59:25,006 INFO L125 PetriNetUnfolderBase]: For 73672/73672 co-relation queries the response was YES. [2024-06-14 13:59:25,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6945 conditions, 1169 events. 639/1169 cut-off events. For 73672/73672 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6213 event pairs, 79 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 6807. Up to 907 conditions per place. [2024-06-14 13:59:25,019 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 198 selfloop transitions, 42 changer transitions 0/242 dead transitions. [2024-06-14 13:59:25,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 242 transitions, 2922 flow [2024-06-14 13:59:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:59:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:59:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 13:59:25,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-14 13:59:25,020 INFO L175 Difference]: Start difference. First operand has 271 places, 225 transitions, 2368 flow. Second operand 10 states and 102 transitions. [2024-06-14 13:59:25,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 242 transitions, 2922 flow [2024-06-14 13:59:25,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 242 transitions, 2852 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-14 13:59:25,283 INFO L231 Difference]: Finished difference. Result has 278 places, 226 transitions, 2430 flow [2024-06-14 13:59:25,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2300, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2430, PETRI_PLACES=278, PETRI_TRANSITIONS=226} [2024-06-14 13:59:25,284 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-14 13:59:25,284 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 226 transitions, 2430 flow [2024-06-14 13:59:25,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:25,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:25,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:25,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 13:59:25,285 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)] === [2024-06-14 13:59:25,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:25,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1155868791, now seen corresponding path program 4 times [2024-06-14 13:59:25,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:25,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995082511] [2024-06-14 13:59:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:25,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:30,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995082511] [2024-06-14 13:59:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995082511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:30,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:30,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:30,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432592779] [2024-06-14 13:59:30,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:30,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:30,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:31,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:59:31,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 226 transitions, 2430 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:31,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:31,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:59:31,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:31,668 INFO L124 PetriNetUnfolderBase]: 650/1190 cut-off events. [2024-06-14 13:59:31,668 INFO L125 PetriNetUnfolderBase]: For 83288/83288 co-relation queries the response was YES. [2024-06-14 13:59:31,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7367 conditions, 1190 events. 650/1190 cut-off events. For 83288/83288 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6367 event pairs, 110 based on Foata normal form. 2/1192 useless extension candidates. Maximal degree in co-relation 7228. Up to 1013 conditions per place. [2024-06-14 13:59:31,684 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 43 changer transitions 0/244 dead transitions. [2024-06-14 13:59:31,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 244 transitions, 3222 flow [2024-06-14 13:59:31,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:59:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:59:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 13:59:31,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 13:59:31,686 INFO L175 Difference]: Start difference. First operand has 278 places, 226 transitions, 2430 flow. Second operand 10 states and 112 transitions. [2024-06-14 13:59:31,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 244 transitions, 3222 flow [2024-06-14 13:59:32,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 244 transitions, 3102 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 13:59:32,042 INFO L231 Difference]: Finished difference. Result has 280 places, 228 transitions, 2480 flow [2024-06-14 13:59:32,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2480, PETRI_PLACES=280, PETRI_TRANSITIONS=228} [2024-06-14 13:59:32,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-14 13:59:32,043 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 228 transitions, 2480 flow [2024-06-14 13:59:32,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:32,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:32,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:32,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 13:59:32,044 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)] === [2024-06-14 13:59:32,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:32,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1580500299, now seen corresponding path program 5 times [2024-06-14 13:59:32,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:32,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202000151] [2024-06-14 13:59:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:32,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:36,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:36,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202000151] [2024-06-14 13:59:36,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202000151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:36,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:36,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:36,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657021867] [2024-06-14 13:59:36,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:36,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:36,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:36,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:36,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:37,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:59:37,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 228 transitions, 2480 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:37,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:37,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:59:37,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:37,503 INFO L124 PetriNetUnfolderBase]: 647/1185 cut-off events. [2024-06-14 13:59:37,503 INFO L125 PetriNetUnfolderBase]: For 75917/75917 co-relation queries the response was YES. [2024-06-14 13:59:37,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7066 conditions, 1185 events. 647/1185 cut-off events. For 75917/75917 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6325 event pairs, 111 based on Foata normal form. 2/1187 useless extension candidates. Maximal degree in co-relation 6926. Up to 1027 conditions per place. [2024-06-14 13:59:37,515 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 198 selfloop transitions, 43 changer transitions 0/243 dead transitions. [2024-06-14 13:59:37,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 243 transitions, 3008 flow [2024-06-14 13:59:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:59:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:59:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 13:59:37,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 13:59:37,517 INFO L175 Difference]: Start difference. First operand has 280 places, 228 transitions, 2480 flow. Second operand 10 states and 111 transitions. [2024-06-14 13:59:37,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 243 transitions, 3008 flow [2024-06-14 13:59:37,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 243 transitions, 2881 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-14 13:59:37,820 INFO L231 Difference]: Finished difference. Result has 284 places, 228 transitions, 2445 flow [2024-06-14 13:59:37,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2445, PETRI_PLACES=284, PETRI_TRANSITIONS=228} [2024-06-14 13:59:37,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 13:59:37,821 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 228 transitions, 2445 flow [2024-06-14 13:59:37,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:37,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:37,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:37,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 13:59:37,821 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:37,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:37,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1580500082, now seen corresponding path program 1 times [2024-06-14 13:59:37,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:37,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269713705] [2024-06-14 13:59:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:37,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:42,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:42,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269713705] [2024-06-14 13:59:42,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269713705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:42,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:42,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:42,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907145121] [2024-06-14 13:59:42,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:42,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:42,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:42,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:42,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:59:42,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 228 transitions, 2445 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:42,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:42,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:59:42,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:43,591 INFO L124 PetriNetUnfolderBase]: 645/1182 cut-off events. [2024-06-14 13:59:43,592 INFO L125 PetriNetUnfolderBase]: For 67293/67293 co-relation queries the response was YES. [2024-06-14 13:59:43,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6883 conditions, 1182 events. 645/1182 cut-off events. For 67293/67293 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6296 event pairs, 110 based on Foata normal form. 1/1183 useless extension candidates. Maximal degree in co-relation 6741. Up to 1022 conditions per place. [2024-06-14 13:59:43,609 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 43 changer transitions 0/241 dead transitions. [2024-06-14 13:59:43,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 241 transitions, 2965 flow [2024-06-14 13:59:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:59:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:59:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 13:59:43,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 13:59:43,611 INFO L175 Difference]: Start difference. First operand has 284 places, 228 transitions, 2445 flow. Second operand 9 states and 104 transitions. [2024-06-14 13:59:43,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 241 transitions, 2965 flow [2024-06-14 13:59:44,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 241 transitions, 2852 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 13:59:44,020 INFO L231 Difference]: Finished difference. Result has 284 places, 228 transitions, 2429 flow [2024-06-14 13:59:44,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2429, PETRI_PLACES=284, PETRI_TRANSITIONS=228} [2024-06-14 13:59:44,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 13:59:44,021 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 228 transitions, 2429 flow [2024-06-14 13:59:44,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:44,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:44,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:44,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 13:59:44,022 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:44,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:44,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1152149721, now seen corresponding path program 6 times [2024-06-14 13:59:44,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:44,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235969778] [2024-06-14 13:59:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:44,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:49,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:49,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235969778] [2024-06-14 13:59:49,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235969778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:49,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:49,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:49,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100844440] [2024-06-14 13:59:49,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:49,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:49,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:49,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:59:49,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 228 transitions, 2429 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:49,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:49,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:59:49,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:49,992 INFO L124 PetriNetUnfolderBase]: 649/1190 cut-off events. [2024-06-14 13:59:49,993 INFO L125 PetriNetUnfolderBase]: For 73646/73646 co-relation queries the response was YES. [2024-06-14 13:59:50,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6971 conditions, 1190 events. 649/1190 cut-off events. For 73646/73646 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6372 event pairs, 116 based on Foata normal form. 2/1192 useless extension candidates. Maximal degree in co-relation 6828. Up to 1042 conditions per place. [2024-06-14 13:59:50,004 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 32 changer transitions 0/244 dead transitions. [2024-06-14 13:59:50,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 244 transitions, 2985 flow [2024-06-14 13:59:50,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:59:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:59:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 13:59:50,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 13:59:50,006 INFO L175 Difference]: Start difference. First operand has 284 places, 228 transitions, 2429 flow. Second operand 10 states and 105 transitions. [2024-06-14 13:59:50,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 244 transitions, 2985 flow [2024-06-14 13:59:50,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 244 transitions, 2858 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 13:59:50,303 INFO L231 Difference]: Finished difference. Result has 286 places, 229 transitions, 2410 flow [2024-06-14 13:59:50,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2302, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2410, PETRI_PLACES=286, PETRI_TRANSITIONS=229} [2024-06-14 13:59:50,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-14 13:59:50,304 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 229 transitions, 2410 flow [2024-06-14 13:59:50,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:50,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:50,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:50,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 13:59:50,304 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:50,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1889479997, now seen corresponding path program 7 times [2024-06-14 13:59:50,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:50,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800572931] [2024-06-14 13:59:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:50,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:59:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:59:57,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:59:57,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800572931] [2024-06-14 13:59:57,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800572931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:59:57,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:59:57,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:59:57,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597713393] [2024-06-14 13:59:57,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:59:57,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:59:57,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:59:57,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:59:57,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:59:57,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 13:59:57,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 229 transitions, 2410 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:57,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:59:57,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 13:59:57,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:59:58,051 INFO L124 PetriNetUnfolderBase]: 653/1198 cut-off events. [2024-06-14 13:59:58,052 INFO L125 PetriNetUnfolderBase]: For 75793/75793 co-relation queries the response was YES. [2024-06-14 13:59:58,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7037 conditions, 1198 events. 653/1198 cut-off events. For 75793/75793 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6434 event pairs, 110 based on Foata normal form. 2/1200 useless extension candidates. Maximal degree in co-relation 6893. Up to 1056 conditions per place. [2024-06-14 13:59:58,065 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 34 changer transitions 0/245 dead transitions. [2024-06-14 13:59:58,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 245 transitions, 2974 flow [2024-06-14 13:59:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:59:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:59:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 13:59:58,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 13:59:58,066 INFO L175 Difference]: Start difference. First operand has 286 places, 229 transitions, 2410 flow. Second operand 10 states and 107 transitions. [2024-06-14 13:59:58,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 245 transitions, 2974 flow [2024-06-14 13:59:58,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 245 transitions, 2876 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 13:59:58,413 INFO L231 Difference]: Finished difference. Result has 288 places, 230 transitions, 2426 flow [2024-06-14 13:59:58,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2312, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2426, PETRI_PLACES=288, PETRI_TRANSITIONS=230} [2024-06-14 13:59:58,414 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-14 13:59:58,414 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 230 transitions, 2426 flow [2024-06-14 13:59:58,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:59:58,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:59:58,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:59:58,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 13:59:58,414 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:59:58,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:59:58,415 INFO L85 PathProgramCache]: Analyzing trace with hash -66821027, now seen corresponding path program 8 times [2024-06-14 13:59:58,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:59:58,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349063054] [2024-06-14 13:59:58,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:59:58,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:59:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:04,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349063054] [2024-06-14 14:00:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349063054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:04,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:04,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274435136] [2024-06-14 14:00:04,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:04,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:04,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:00:04,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 230 transitions, 2426 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:04,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:04,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:00:04,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:04,868 INFO L124 PetriNetUnfolderBase]: 657/1205 cut-off events. [2024-06-14 14:00:04,868 INFO L125 PetriNetUnfolderBase]: For 77504/77506 co-relation queries the response was YES. [2024-06-14 14:00:04,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7090 conditions, 1205 events. 657/1205 cut-off events. For 77504/77506 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6481 event pairs, 81 based on Foata normal form. 4/1209 useless extension candidates. Maximal degree in co-relation 6945. Up to 1030 conditions per place. [2024-06-14 14:00:04,886 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 35 changer transitions 0/249 dead transitions. [2024-06-14 14:00:04,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 249 transitions, 3013 flow [2024-06-14 14:00:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 14:00:04,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 14:00:04,888 INFO L175 Difference]: Start difference. First operand has 288 places, 230 transitions, 2426 flow. Second operand 10 states and 108 transitions. [2024-06-14 14:00:04,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 249 transitions, 3013 flow [2024-06-14 14:00:05,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 249 transitions, 2909 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 14:00:05,494 INFO L231 Difference]: Finished difference. Result has 290 places, 231 transitions, 2440 flow [2024-06-14 14:00:05,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2440, PETRI_PLACES=290, PETRI_TRANSITIONS=231} [2024-06-14 14:00:05,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-14 14:00:05,495 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 231 transitions, 2440 flow [2024-06-14 14:00:05,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:05,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:05,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 14:00:05,495 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:05,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash -63096377, now seen corresponding path program 9 times [2024-06-14 14:00:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:05,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139200296] [2024-06-14 14:00:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:13,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:13,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139200296] [2024-06-14 14:00:13,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139200296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:13,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:13,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:13,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668077893] [2024-06-14 14:00:13,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:13,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:13,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:13,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:13,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:13,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:00:13,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 231 transitions, 2440 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:13,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:13,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:00:13,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:13,793 INFO L124 PetriNetUnfolderBase]: 661/1213 cut-off events. [2024-06-14 14:00:13,793 INFO L125 PetriNetUnfolderBase]: For 79253/79255 co-relation queries the response was YES. [2024-06-14 14:00:13,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7154 conditions, 1213 events. 661/1213 cut-off events. For 79253/79255 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6584 event pairs, 116 based on Foata normal form. 4/1217 useless extension candidates. Maximal degree in co-relation 7008. Up to 1073 conditions per place. [2024-06-14 14:00:13,805 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 40 changer transitions 0/250 dead transitions. [2024-06-14 14:00:13,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 250 transitions, 3043 flow [2024-06-14 14:00:13,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:13,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 14:00:13,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 14:00:13,807 INFO L175 Difference]: Start difference. First operand has 290 places, 231 transitions, 2440 flow. Second operand 10 states and 111 transitions. [2024-06-14 14:00:13,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 250 transitions, 3043 flow [2024-06-14 14:00:14,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 250 transitions, 2935 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 14:00:14,205 INFO L231 Difference]: Finished difference. Result has 292 places, 232 transitions, 2463 flow [2024-06-14 14:00:14,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2463, PETRI_PLACES=292, PETRI_TRANSITIONS=232} [2024-06-14 14:00:14,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-14 14:00:14,206 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 232 transitions, 2463 flow [2024-06-14 14:00:14,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:14,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:14,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:14,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 14:00:14,206 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:14,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1208640626, now seen corresponding path program 2 times [2024-06-14 14:00:14,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:14,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320311324] [2024-06-14 14:00:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:14,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:20,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:20,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320311324] [2024-06-14 14:00:20,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320311324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:20,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:20,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:20,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522346133] [2024-06-14 14:00:20,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:20,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:20,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:20,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:20,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:20,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:00:20,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 232 transitions, 2463 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:20,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:20,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:00:20,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:21,347 INFO L124 PetriNetUnfolderBase]: 659/1210 cut-off events. [2024-06-14 14:00:21,347 INFO L125 PetriNetUnfolderBase]: For 70096/70098 co-relation queries the response was YES. [2024-06-14 14:00:21,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 1210 events. 659/1210 cut-off events. For 70096/70098 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6547 event pairs, 116 based on Foata normal form. 3/1213 useless extension candidates. Maximal degree in co-relation 6816. Up to 1067 conditions per place. [2024-06-14 14:00:21,361 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 43 changer transitions 0/250 dead transitions. [2024-06-14 14:00:21,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 250 transitions, 3026 flow [2024-06-14 14:00:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:21,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 14:00:21,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 14:00:21,362 INFO L175 Difference]: Start difference. First operand has 292 places, 232 transitions, 2463 flow. Second operand 10 states and 112 transitions. [2024-06-14 14:00:21,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 250 transitions, 3026 flow [2024-06-14 14:00:21,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 250 transitions, 2895 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 14:00:21,750 INFO L231 Difference]: Finished difference. Result has 294 places, 232 transitions, 2426 flow [2024-06-14 14:00:21,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2426, PETRI_PLACES=294, PETRI_TRANSITIONS=232} [2024-06-14 14:00:21,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-14 14:00:21,751 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 232 transitions, 2426 flow [2024-06-14 14:00:21,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:21,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:21,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:21,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 14:00:21,752 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:21,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1208790573, now seen corresponding path program 10 times [2024-06-14 14:00:21,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:21,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280977044] [2024-06-14 14:00:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:21,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:27,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:27,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280977044] [2024-06-14 14:00:27,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280977044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:27,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:27,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:27,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684489733] [2024-06-14 14:00:27,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:27,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:27,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:27,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:27,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:27,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:00:27,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 232 transitions, 2426 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:27,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:27,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:00:27,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:28,320 INFO L124 PetriNetUnfolderBase]: 663/1218 cut-off events. [2024-06-14 14:00:28,321 INFO L125 PetriNetUnfolderBase]: For 76338/76340 co-relation queries the response was YES. [2024-06-14 14:00:28,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7004 conditions, 1218 events. 663/1218 cut-off events. For 76338/76340 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6600 event pairs, 118 based on Foata normal form. 4/1222 useless extension candidates. Maximal degree in co-relation 6856. Up to 1084 conditions per place. [2024-06-14 14:00:28,340 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 215 selfloop transitions, 34 changer transitions 0/251 dead transitions. [2024-06-14 14:00:28,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 251 transitions, 3025 flow [2024-06-14 14:00:28,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 14:00:28,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 14:00:28,342 INFO L175 Difference]: Start difference. First operand has 294 places, 232 transitions, 2426 flow. Second operand 10 states and 109 transitions. [2024-06-14 14:00:28,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 251 transitions, 3025 flow [2024-06-14 14:00:28,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 251 transitions, 2741 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-06-14 14:00:28,996 INFO L231 Difference]: Finished difference. Result has 292 places, 233 transitions, 2262 flow [2024-06-14 14:00:28,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2262, PETRI_PLACES=292, PETRI_TRANSITIONS=233} [2024-06-14 14:00:28,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-14 14:00:28,997 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 233 transitions, 2262 flow [2024-06-14 14:00:28,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:28,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:28,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:28,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 14:00:28,998 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:28,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1527728247, now seen corresponding path program 11 times [2024-06-14 14:00:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:28,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208582131] [2024-06-14 14:00:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:28,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:34,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:34,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208582131] [2024-06-14 14:00:34,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208582131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:34,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:34,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:34,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112158582] [2024-06-14 14:00:34,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:34,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:34,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:34,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:34,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:34,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:00:34,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 233 transitions, 2262 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:34,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:34,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:00:34,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:34,967 INFO L124 PetriNetUnfolderBase]: 667/1226 cut-off events. [2024-06-14 14:00:34,967 INFO L125 PetriNetUnfolderBase]: For 76955/76957 co-relation queries the response was YES. [2024-06-14 14:00:34,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6837 conditions, 1226 events. 667/1226 cut-off events. For 76955/76957 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6676 event pairs, 116 based on Foata normal form. 4/1230 useless extension candidates. Maximal degree in co-relation 6691. Up to 1070 conditions per place. [2024-06-14 14:00:34,981 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 40 changer transitions 0/252 dead transitions. [2024-06-14 14:00:34,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 252 transitions, 2869 flow [2024-06-14 14:00:34,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:34,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 14:00:34,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 14:00:34,982 INFO L175 Difference]: Start difference. First operand has 292 places, 233 transitions, 2262 flow. Second operand 10 states and 112 transitions. [2024-06-14 14:00:34,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 252 transitions, 2869 flow [2024-06-14 14:00:35,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 252 transitions, 2752 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 14:00:35,346 INFO L231 Difference]: Finished difference. Result has 293 places, 234 transitions, 2279 flow [2024-06-14 14:00:35,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2279, PETRI_PLACES=293, PETRI_TRANSITIONS=234} [2024-06-14 14:00:35,347 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-14 14:00:35,347 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 234 transitions, 2279 flow [2024-06-14 14:00:35,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:35,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:35,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:35,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 14:00:35,348 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:35,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:35,348 INFO L85 PathProgramCache]: Analyzing trace with hash -211832809, now seen corresponding path program 12 times [2024-06-14 14:00:35,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:35,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980661884] [2024-06-14 14:00:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:35,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:40,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:40,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980661884] [2024-06-14 14:00:40,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980661884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:40,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:40,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:40,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990535078] [2024-06-14 14:00:40,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:40,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:40,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:40,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:40,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:40,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:00:40,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 234 transitions, 2279 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:40,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:40,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:00:40,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:41,205 INFO L124 PetriNetUnfolderBase]: 671/1237 cut-off events. [2024-06-14 14:00:41,206 INFO L125 PetriNetUnfolderBase]: For 78834/78834 co-relation queries the response was YES. [2024-06-14 14:00:41,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6894 conditions, 1237 events. 671/1237 cut-off events. For 78834/78834 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6755 event pairs, 114 based on Foata normal form. 2/1239 useless extension candidates. Maximal degree in co-relation 6748. Up to 1083 conditions per place. [2024-06-14 14:00:41,218 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 40 changer transitions 0/251 dead transitions. [2024-06-14 14:00:41,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 251 transitions, 2879 flow [2024-06-14 14:00:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 14:00:41,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 14:00:41,220 INFO L175 Difference]: Start difference. First operand has 293 places, 234 transitions, 2279 flow. Second operand 10 states and 108 transitions. [2024-06-14 14:00:41,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 251 transitions, 2879 flow [2024-06-14 14:00:41,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 251 transitions, 2755 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 14:00:41,528 INFO L231 Difference]: Finished difference. Result has 295 places, 235 transitions, 2291 flow [2024-06-14 14:00:41,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2291, PETRI_PLACES=295, PETRI_TRANSITIONS=235} [2024-06-14 14:00:41,529 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-14 14:00:41,529 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 235 transitions, 2291 flow [2024-06-14 14:00:41,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:41,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:41,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:41,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 14:00:41,530 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:41,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1064540567, now seen corresponding path program 1 times [2024-06-14 14:00:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818473229] [2024-06-14 14:00:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:47,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:47,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818473229] [2024-06-14 14:00:47,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818473229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:47,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:47,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:47,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140132540] [2024-06-14 14:00:47,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:47,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:47,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:47,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:47,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:47,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:00:47,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 235 transitions, 2291 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:47,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:47,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:00:47,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:48,366 INFO L124 PetriNetUnfolderBase]: 691/1280 cut-off events. [2024-06-14 14:00:48,366 INFO L125 PetriNetUnfolderBase]: For 120014/120016 co-relation queries the response was YES. [2024-06-14 14:00:48,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7006 conditions, 1280 events. 691/1280 cut-off events. For 120014/120016 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7057 event pairs, 130 based on Foata normal form. 12/1292 useless extension candidates. Maximal degree in co-relation 6859. Up to 1101 conditions per place. [2024-06-14 14:00:48,379 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 213 selfloop transitions, 36 changer transitions 7/258 dead transitions. [2024-06-14 14:00:48,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 258 transitions, 2922 flow [2024-06-14 14:00:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:48,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 14:00:48,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 14:00:48,380 INFO L175 Difference]: Start difference. First operand has 295 places, 235 transitions, 2291 flow. Second operand 10 states and 115 transitions. [2024-06-14 14:00:48,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 258 transitions, 2922 flow [2024-06-14 14:00:48,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 258 transitions, 2796 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 14:00:48,745 INFO L231 Difference]: Finished difference. Result has 297 places, 233 transitions, 2221 flow [2024-06-14 14:00:48,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2221, PETRI_PLACES=297, PETRI_TRANSITIONS=233} [2024-06-14 14:00:48,745 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-14 14:00:48,745 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 233 transitions, 2221 flow [2024-06-14 14:00:48,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:48,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:48,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:48,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 14:00:48,746 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:48,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash -211838389, now seen corresponding path program 13 times [2024-06-14 14:00:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807870744] [2024-06-14 14:00:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:00:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:00:53,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:00:53,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807870744] [2024-06-14 14:00:53,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807870744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:00:53,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:00:53,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:00:53,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186604849] [2024-06-14 14:00:53,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:00:53,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:00:53,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:00:53,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:00:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:00:54,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:00:54,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 233 transitions, 2221 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:54,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:00:54,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:00:54,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:00:54,525 INFO L124 PetriNetUnfolderBase]: 669/1239 cut-off events. [2024-06-14 14:00:54,526 INFO L125 PetriNetUnfolderBase]: For 80734/80734 co-relation queries the response was YES. [2024-06-14 14:00:54,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6814 conditions, 1239 events. 669/1239 cut-off events. For 80734/80734 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6814 event pairs, 114 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 6666. Up to 1071 conditions per place. [2024-06-14 14:00:54,537 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 41 changer transitions 0/250 dead transitions. [2024-06-14 14:00:54,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 250 transitions, 2817 flow [2024-06-14 14:00:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:00:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:00:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 14:00:54,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 14:00:54,539 INFO L175 Difference]: Start difference. First operand has 297 places, 233 transitions, 2221 flow. Second operand 10 states and 109 transitions. [2024-06-14 14:00:54,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 250 transitions, 2817 flow [2024-06-14 14:00:54,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 250 transitions, 2741 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 14:00:54,959 INFO L231 Difference]: Finished difference. Result has 298 places, 234 transitions, 2285 flow [2024-06-14 14:00:54,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2285, PETRI_PLACES=298, PETRI_TRANSITIONS=234} [2024-06-14 14:00:54,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 14:00:54,960 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 234 transitions, 2285 flow [2024-06-14 14:00:54,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:00:54,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:00:54,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:00:54,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 14:00:54,960 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:00:54,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:00:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1770575165, now seen corresponding path program 14 times [2024-06-14 14:00:54,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:00:54,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439365511] [2024-06-14 14:00:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:00:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:00:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:00,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:00,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439365511] [2024-06-14 14:01:00,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439365511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:00,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:00,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:00,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956770920] [2024-06-14 14:01:00,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:00,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:00,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:00,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:00,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:00,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:01:00,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 234 transitions, 2285 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:00,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:00,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:01:00,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:01,274 INFO L124 PetriNetUnfolderBase]: 673/1247 cut-off events. [2024-06-14 14:01:01,274 INFO L125 PetriNetUnfolderBase]: For 81421/81421 co-relation queries the response was YES. [2024-06-14 14:01:01,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6953 conditions, 1247 events. 673/1247 cut-off events. For 81421/81421 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6850 event pairs, 114 based on Foata normal form. 2/1249 useless extension candidates. Maximal degree in co-relation 6804. Up to 1093 conditions per place. [2024-06-14 14:01:01,294 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 38 changer transitions 0/251 dead transitions. [2024-06-14 14:01:01,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 251 transitions, 2881 flow [2024-06-14 14:01:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:01:01,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:01:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 14:01:01,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 14:01:01,296 INFO L175 Difference]: Start difference. First operand has 298 places, 234 transitions, 2285 flow. Second operand 10 states and 106 transitions. [2024-06-14 14:01:01,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 251 transitions, 2881 flow [2024-06-14 14:01:01,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 251 transitions, 2751 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 14:01:01,866 INFO L231 Difference]: Finished difference. Result has 300 places, 235 transitions, 2291 flow [2024-06-14 14:01:01,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2291, PETRI_PLACES=300, PETRI_TRANSITIONS=235} [2024-06-14 14:01:01,866 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-14 14:01:01,866 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 235 transitions, 2291 flow [2024-06-14 14:01:01,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:01,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:01,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:01,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 14:01:01,867 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:01,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:01,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1563771995, now seen corresponding path program 15 times [2024-06-14 14:01:01,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:01,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411444369] [2024-06-14 14:01:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:01,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:07,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:07,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411444369] [2024-06-14 14:01:07,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411444369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:07,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:07,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:01:07,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73457042] [2024-06-14 14:01:07,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:07,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:01:07,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:07,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:01:07,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:01:08,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:01:08,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 235 transitions, 2291 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:08,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:08,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:01:08,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:08,650 INFO L124 PetriNetUnfolderBase]: 677/1255 cut-off events. [2024-06-14 14:01:08,650 INFO L125 PetriNetUnfolderBase]: For 84268/84268 co-relation queries the response was YES. [2024-06-14 14:01:08,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6996 conditions, 1255 events. 677/1255 cut-off events. For 84268/84268 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6925 event pairs, 110 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 6846. Up to 1033 conditions per place. [2024-06-14 14:01:08,663 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 55 changer transitions 0/252 dead transitions. [2024-06-14 14:01:08,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 252 transitions, 2899 flow [2024-06-14 14:01:08,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:01:08,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:01:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 14:01:08,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 14:01:08,665 INFO L175 Difference]: Start difference. First operand has 300 places, 235 transitions, 2291 flow. Second operand 10 states and 110 transitions. [2024-06-14 14:01:08,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 252 transitions, 2899 flow [2024-06-14 14:01:08,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 252 transitions, 2773 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 14:01:09,002 INFO L231 Difference]: Finished difference. Result has 302 places, 236 transitions, 2337 flow [2024-06-14 14:01:09,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2337, PETRI_PLACES=302, PETRI_TRANSITIONS=236} [2024-06-14 14:01:09,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-14 14:01:09,003 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 236 transitions, 2337 flow [2024-06-14 14:01:09,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:09,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:09,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:09,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 14:01:09,003 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:09,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:09,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1764853309, now seen corresponding path program 2 times [2024-06-14 14:01:09,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:09,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768398700] [2024-06-14 14:01:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:09,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:13,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768398700] [2024-06-14 14:01:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768398700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:13,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:13,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508853932] [2024-06-14 14:01:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:13,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:13,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:14,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:01:14,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 236 transitions, 2337 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:14,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:14,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:01:14,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:14,668 INFO L124 PetriNetUnfolderBase]: 693/1291 cut-off events. [2024-06-14 14:01:14,668 INFO L125 PetriNetUnfolderBase]: For 126745/126745 co-relation queries the response was YES. [2024-06-14 14:01:14,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7129 conditions, 1291 events. 693/1291 cut-off events. For 126745/126745 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7149 event pairs, 122 based on Foata normal form. 10/1301 useless extension candidates. Maximal degree in co-relation 6978. Up to 1093 conditions per place. [2024-06-14 14:01:14,681 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 207 selfloop transitions, 38 changer transitions 11/258 dead transitions. [2024-06-14 14:01:14,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 258 transitions, 2961 flow [2024-06-14 14:01:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:01:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:01:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 14:01:14,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 14:01:14,682 INFO L175 Difference]: Start difference. First operand has 302 places, 236 transitions, 2337 flow. Second operand 11 states and 120 transitions. [2024-06-14 14:01:14,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 258 transitions, 2961 flow [2024-06-14 14:01:15,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 258 transitions, 2799 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 14:01:15,115 INFO L231 Difference]: Finished difference. Result has 305 places, 233 transitions, 2232 flow [2024-06-14 14:01:15,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2232, PETRI_PLACES=305, PETRI_TRANSITIONS=233} [2024-06-14 14:01:15,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-14 14:01:15,116 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 233 transitions, 2232 flow [2024-06-14 14:01:15,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:15,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:15,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:15,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 14:01:15,116 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:15,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:15,117 INFO L85 PathProgramCache]: Analyzing trace with hash -4902663, now seen corresponding path program 3 times [2024-06-14 14:01:15,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:15,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680401127] [2024-06-14 14:01:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:15,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:20,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:20,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680401127] [2024-06-14 14:01:20,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680401127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:20,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:20,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:20,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92843315] [2024-06-14 14:01:20,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:20,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:20,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:20,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:20,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:20,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:01:20,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 233 transitions, 2232 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:20,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:20,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:01:20,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:21,058 INFO L124 PetriNetUnfolderBase]: 708/1328 cut-off events. [2024-06-14 14:01:21,058 INFO L125 PetriNetUnfolderBase]: For 171456/171456 co-relation queries the response was YES. [2024-06-14 14:01:21,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8204 conditions, 1328 events. 708/1328 cut-off events. For 171456/171456 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7383 event pairs, 123 based on Foata normal form. 8/1336 useless extension candidates. Maximal degree in co-relation 8052. Up to 917 conditions per place. [2024-06-14 14:01:21,073 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 57 changer transitions 9/259 dead transitions. [2024-06-14 14:01:21,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 259 transitions, 3110 flow [2024-06-14 14:01:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:01:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:01:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 14:01:21,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 14:01:21,074 INFO L175 Difference]: Start difference. First operand has 305 places, 233 transitions, 2232 flow. Second operand 11 states and 126 transitions. [2024-06-14 14:01:21,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 259 transitions, 3110 flow [2024-06-14 14:01:21,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 259 transitions, 3026 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 14:01:21,680 INFO L231 Difference]: Finished difference. Result has 303 places, 229 transitions, 2232 flow [2024-06-14 14:01:21,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2232, PETRI_PLACES=303, PETRI_TRANSITIONS=229} [2024-06-14 14:01:21,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-14 14:01:21,681 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 229 transitions, 2232 flow [2024-06-14 14:01:21,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:21,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:21,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:21,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 14:01:21,681 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:21,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:21,682 INFO L85 PathProgramCache]: Analyzing trace with hash -4911963, now seen corresponding path program 4 times [2024-06-14 14:01:21,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:21,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564281118] [2024-06-14 14:01:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:27,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:27,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564281118] [2024-06-14 14:01:27,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564281118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:27,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:27,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105323197] [2024-06-14 14:01:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:27,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:27,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:28,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:01:28,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 229 transitions, 2232 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:28,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:28,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:01:28,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:28,680 INFO L124 PetriNetUnfolderBase]: 684/1284 cut-off events. [2024-06-14 14:01:28,681 INFO L125 PetriNetUnfolderBase]: For 180115/180115 co-relation queries the response was YES. [2024-06-14 14:01:28,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8043 conditions, 1284 events. 684/1284 cut-off events. For 180115/180115 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7119 event pairs, 127 based on Foata normal form. 10/1294 useless extension candidates. Maximal degree in co-relation 7892. Up to 988 conditions per place. [2024-06-14 14:01:28,694 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 53 changer transitions 14/251 dead transitions. [2024-06-14 14:01:28,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 251 transitions, 2842 flow [2024-06-14 14:01:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:01:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:01:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 14:01:28,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 14:01:28,695 INFO L175 Difference]: Start difference. First operand has 303 places, 229 transitions, 2232 flow. Second operand 11 states and 123 transitions. [2024-06-14 14:01:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 251 transitions, 2842 flow [2024-06-14 14:01:29,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 251 transitions, 2724 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 14:01:29,243 INFO L231 Difference]: Finished difference. Result has 302 places, 223 transitions, 2177 flow [2024-06-14 14:01:29,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2177, PETRI_PLACES=302, PETRI_TRANSITIONS=223} [2024-06-14 14:01:29,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-14 14:01:29,244 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 223 transitions, 2177 flow [2024-06-14 14:01:29,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:29,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:29,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:29,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 14:01:29,244 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:29,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:29,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1571123645, now seen corresponding path program 16 times [2024-06-14 14:01:29,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:29,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197669908] [2024-06-14 14:01:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:29,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:35,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:35,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197669908] [2024-06-14 14:01:35,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197669908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:35,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:35,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:35,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659123970] [2024-06-14 14:01:35,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:35,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:35,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:35,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:35,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:35,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:01:35,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 223 transitions, 2177 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:35,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:35,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:01:35,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:36,356 INFO L124 PetriNetUnfolderBase]: 656/1228 cut-off events. [2024-06-14 14:01:36,357 INFO L125 PetriNetUnfolderBase]: For 133415/133415 co-relation queries the response was YES. [2024-06-14 14:01:36,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7824 conditions, 1228 events. 656/1228 cut-off events. For 133415/133415 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6743 event pairs, 129 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 7674. Up to 1044 conditions per place. [2024-06-14 14:01:36,367 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 47 changer transitions 0/240 dead transitions. [2024-06-14 14:01:36,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 240 transitions, 2763 flow [2024-06-14 14:01:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:01:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:01:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 14:01:36,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 14:01:36,368 INFO L175 Difference]: Start difference. First operand has 302 places, 223 transitions, 2177 flow. Second operand 10 states and 109 transitions. [2024-06-14 14:01:36,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 240 transitions, 2763 flow [2024-06-14 14:01:36,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 240 transitions, 2637 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 14:01:36,918 INFO L231 Difference]: Finished difference. Result has 295 places, 224 transitions, 2209 flow [2024-06-14 14:01:36,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2209, PETRI_PLACES=295, PETRI_TRANSITIONS=224} [2024-06-14 14:01:36,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-14 14:01:36,918 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 224 transitions, 2209 flow [2024-06-14 14:01:36,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:36,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:36,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:36,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 14:01:36,919 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:36,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1481263777, now seen corresponding path program 5 times [2024-06-14 14:01:36,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:36,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167859903] [2024-06-14 14:01:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:36,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:43,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:43,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167859903] [2024-06-14 14:01:43,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167859903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:43,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:43,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:43,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385836930] [2024-06-14 14:01:43,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:43,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:43,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:43,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:43,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:43,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:01:43,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 224 transitions, 2209 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:43,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:43,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:01:43,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:43,966 INFO L124 PetriNetUnfolderBase]: 672/1264 cut-off events. [2024-06-14 14:01:43,967 INFO L125 PetriNetUnfolderBase]: For 168964/168964 co-relation queries the response was YES. [2024-06-14 14:01:43,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7893 conditions, 1264 events. 672/1264 cut-off events. For 168964/168964 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6986 event pairs, 131 based on Foata normal form. 10/1274 useless extension candidates. Maximal degree in co-relation 7746. Up to 990 conditions per place. [2024-06-14 14:01:43,985 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 49 changer transitions 11/246 dead transitions. [2024-06-14 14:01:43,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 246 transitions, 2805 flow [2024-06-14 14:01:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:01:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:01:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 14:01:43,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 14:01:43,987 INFO L175 Difference]: Start difference. First operand has 295 places, 224 transitions, 2209 flow. Second operand 11 states and 123 transitions. [2024-06-14 14:01:43,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 246 transitions, 2805 flow [2024-06-14 14:01:44,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 246 transitions, 2657 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 14:01:44,638 INFO L231 Difference]: Finished difference. Result has 298 places, 221 transitions, 2138 flow [2024-06-14 14:01:44,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2138, PETRI_PLACES=298, PETRI_TRANSITIONS=221} [2024-06-14 14:01:44,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 14:01:44,638 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 221 transitions, 2138 flow [2024-06-14 14:01:44,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:44,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:44,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:44,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 14:01:44,639 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:44,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:44,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1800795661, now seen corresponding path program 17 times [2024-06-14 14:01:44,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:44,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899540008] [2024-06-14 14:01:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:44,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:50,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:50,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899540008] [2024-06-14 14:01:50,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899540008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:50,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:50,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:50,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657180742] [2024-06-14 14:01:50,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:50,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:50,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:50,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:50,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:50,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:01:50,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 221 transitions, 2138 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:50,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:50,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:01:50,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:51,033 INFO L124 PetriNetUnfolderBase]: 650/1222 cut-off events. [2024-06-14 14:01:51,034 INFO L125 PetriNetUnfolderBase]: For 131456/131456 co-relation queries the response was YES. [2024-06-14 14:01:51,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 1222 events. 650/1222 cut-off events. For 131456/131456 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6746 event pairs, 123 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 7564. Up to 907 conditions per place. [2024-06-14 14:01:51,047 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 52 changer transitions 0/243 dead transitions. [2024-06-14 14:01:51,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 243 transitions, 2984 flow [2024-06-14 14:01:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:01:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:01:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 14:01:51,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 14:01:51,048 INFO L175 Difference]: Start difference. First operand has 298 places, 221 transitions, 2138 flow. Second operand 10 states and 116 transitions. [2024-06-14 14:01:51,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 243 transitions, 2984 flow [2024-06-14 14:01:51,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 243 transitions, 2878 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 14:01:51,541 INFO L231 Difference]: Finished difference. Result has 295 places, 222 transitions, 2206 flow [2024-06-14 14:01:51,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2206, PETRI_PLACES=295, PETRI_TRANSITIONS=222} [2024-06-14 14:01:51,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-14 14:01:51,542 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 222 transitions, 2206 flow [2024-06-14 14:01:51,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:51,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:51,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:51,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 14:01:51,542 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:51,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash -5171433, now seen corresponding path program 6 times [2024-06-14 14:01:51,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:51,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055577874] [2024-06-14 14:01:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:51,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:01:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:01:57,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:01:57,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055577874] [2024-06-14 14:01:57,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055577874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:01:57,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:01:57,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:01:57,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782287089] [2024-06-14 14:01:57,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:01:57,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:01:57,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:01:57,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:01:57,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:01:57,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:01:57,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 222 transitions, 2206 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:57,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:01:57,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:01:57,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:01:58,506 INFO L124 PetriNetUnfolderBase]: 637/1199 cut-off events. [2024-06-14 14:01:58,507 INFO L125 PetriNetUnfolderBase]: For 118830/118830 co-relation queries the response was YES. [2024-06-14 14:01:58,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6605 conditions, 1199 events. 637/1199 cut-off events. For 118830/118830 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6606 event pairs, 112 based on Foata normal form. 10/1209 useless extension candidates. Maximal degree in co-relation 6458. Up to 933 conditions per place. [2024-06-14 14:01:58,519 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 49 changer transitions 11/244 dead transitions. [2024-06-14 14:01:58,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 244 transitions, 2798 flow [2024-06-14 14:01:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:01:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:01:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 14:01:58,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 14:01:58,535 INFO L175 Difference]: Start difference. First operand has 295 places, 222 transitions, 2206 flow. Second operand 11 states and 121 transitions. [2024-06-14 14:01:58,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 244 transitions, 2798 flow [2024-06-14 14:01:58,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 244 transitions, 2638 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 14:01:58,845 INFO L231 Difference]: Finished difference. Result has 298 places, 219 transitions, 2123 flow [2024-06-14 14:01:58,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2123, PETRI_PLACES=298, PETRI_TRANSITIONS=219} [2024-06-14 14:01:58,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 14:01:58,845 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 219 transitions, 2123 flow [2024-06-14 14:01:58,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:01:58,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:01:58,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:01:58,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 14:01:58,846 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:01:58,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:01:58,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1107435335, now seen corresponding path program 18 times [2024-06-14 14:01:58,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:01:58,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239216729] [2024-06-14 14:01:58,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:01:58,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:01:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:04,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:04,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239216729] [2024-06-14 14:02:04,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239216729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:04,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:04,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:04,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911501992] [2024-06-14 14:02:04,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:04,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:04,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:04,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:04,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:04,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:02:04,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 219 transitions, 2123 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:04,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:04,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:02:04,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:05,068 INFO L124 PetriNetUnfolderBase]: 615/1157 cut-off events. [2024-06-14 14:02:05,069 INFO L125 PetriNetUnfolderBase]: For 80182/80184 co-relation queries the response was YES. [2024-06-14 14:02:05,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6416 conditions, 1157 events. 615/1157 cut-off events. For 80182/80184 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6366 event pairs, 113 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 6268. Up to 953 conditions per place. [2024-06-14 14:02:05,080 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 49 changer transitions 0/235 dead transitions. [2024-06-14 14:02:05,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 235 transitions, 2703 flow [2024-06-14 14:02:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:05,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 14:02:05,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 14:02:05,081 INFO L175 Difference]: Start difference. First operand has 298 places, 219 transitions, 2123 flow. Second operand 10 states and 111 transitions. [2024-06-14 14:02:05,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 235 transitions, 2703 flow [2024-06-14 14:02:05,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 235 transitions, 2601 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:02:05,374 INFO L231 Difference]: Finished difference. Result has 294 places, 220 transitions, 2187 flow [2024-06-14 14:02:05,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2187, PETRI_PLACES=294, PETRI_TRANSITIONS=220} [2024-06-14 14:02:05,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-14 14:02:05,388 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 220 transitions, 2187 flow [2024-06-14 14:02:05,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:05,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:05,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:05,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 14:02:05,389 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:05,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash -94568725, now seen corresponding path program 7 times [2024-06-14 14:02:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112336962] [2024-06-14 14:02:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:10,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:10,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112336962] [2024-06-14 14:02:10,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112336962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:10,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:10,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:10,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421014927] [2024-06-14 14:02:10,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:10,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:10,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:10,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:10,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:02:10,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 220 transitions, 2187 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:10,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:10,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:02:10,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:11,369 INFO L124 PetriNetUnfolderBase]: 631/1193 cut-off events. [2024-06-14 14:02:11,370 INFO L125 PetriNetUnfolderBase]: For 118984/118986 co-relation queries the response was YES. [2024-06-14 14:02:11,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 1193 events. 631/1193 cut-off events. For 118984/118986 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6591 event pairs, 115 based on Foata normal form. 10/1203 useless extension candidates. Maximal degree in co-relation 6409. Up to 935 conditions per place. [2024-06-14 14:02:11,382 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 45 changer transitions 16/241 dead transitions. [2024-06-14 14:02:11,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 241 transitions, 2773 flow [2024-06-14 14:02:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:02:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:02:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 14:02:11,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 14:02:11,383 INFO L175 Difference]: Start difference. First operand has 294 places, 220 transitions, 2187 flow. Second operand 11 states and 124 transitions. [2024-06-14 14:02:11,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 241 transitions, 2773 flow [2024-06-14 14:02:11,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 241 transitions, 2617 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-14 14:02:11,726 INFO L231 Difference]: Finished difference. Result has 297 places, 214 transitions, 2084 flow [2024-06-14 14:02:11,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2084, PETRI_PLACES=297, PETRI_TRANSITIONS=214} [2024-06-14 14:02:11,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-14 14:02:11,727 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 214 transitions, 2084 flow [2024-06-14 14:02:11,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:11,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:11,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:11,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 14:02:11,728 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:11,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 908133545, now seen corresponding path program 19 times [2024-06-14 14:02:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:11,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704406972] [2024-06-14 14:02:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:11,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:16,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:16,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704406972] [2024-06-14 14:02:16,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704406972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:16,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:16,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:16,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825280920] [2024-06-14 14:02:16,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:16,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:16,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:16,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:17,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:02:17,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 214 transitions, 2084 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:17,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:17,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:02:17,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:17,521 INFO L124 PetriNetUnfolderBase]: 599/1133 cut-off events. [2024-06-14 14:02:17,521 INFO L125 PetriNetUnfolderBase]: For 80341/80343 co-relation queries the response was YES. [2024-06-14 14:02:17,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 1133 events. 599/1133 cut-off events. For 80341/80343 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6239 event pairs, 115 based on Foata normal form. 2/1135 useless extension candidates. Maximal degree in co-relation 6157. Up to 955 conditions per place. [2024-06-14 14:02:17,538 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 42 changer transitions 0/229 dead transitions. [2024-06-14 14:02:17,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 229 transitions, 2648 flow [2024-06-14 14:02:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 14:02:17,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 14:02:17,540 INFO L175 Difference]: Start difference. First operand has 297 places, 214 transitions, 2084 flow. Second operand 10 states and 106 transitions. [2024-06-14 14:02:17,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 229 transitions, 2648 flow [2024-06-14 14:02:17,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 229 transitions, 2542 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 14:02:17,994 INFO L231 Difference]: Finished difference. Result has 290 places, 215 transitions, 2132 flow [2024-06-14 14:02:17,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2132, PETRI_PLACES=290, PETRI_TRANSITIONS=215} [2024-06-14 14:02:17,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-14 14:02:17,995 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 215 transitions, 2132 flow [2024-06-14 14:02:17,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:17,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:17,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:17,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 14:02:17,995 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:17,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash -754524723, now seen corresponding path program 20 times [2024-06-14 14:02:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:17,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617978529] [2024-06-14 14:02:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:17,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:24,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:24,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617978529] [2024-06-14 14:02:24,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617978529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:24,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:24,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:24,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842461279] [2024-06-14 14:02:24,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:24,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:24,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:24,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:02:24,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 215 transitions, 2132 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:24,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:24,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:02:24,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:25,116 INFO L124 PetriNetUnfolderBase]: 603/1141 cut-off events. [2024-06-14 14:02:25,117 INFO L125 PetriNetUnfolderBase]: For 79170/79172 co-relation queries the response was YES. [2024-06-14 14:02:25,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6409 conditions, 1141 events. 603/1141 cut-off events. For 79170/79172 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6293 event pairs, 115 based on Foata normal form. 2/1143 useless extension candidates. Maximal degree in co-relation 6263. Up to 963 conditions per place. [2024-06-14 14:02:25,129 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 187 selfloop transitions, 41 changer transitions 0/230 dead transitions. [2024-06-14 14:02:25,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 230 transitions, 2694 flow [2024-06-14 14:02:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 14:02:25,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 14:02:25,131 INFO L175 Difference]: Start difference. First operand has 290 places, 215 transitions, 2132 flow. Second operand 10 states and 105 transitions. [2024-06-14 14:02:25,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 230 transitions, 2694 flow [2024-06-14 14:02:25,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 230 transitions, 2552 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-14 14:02:25,452 INFO L231 Difference]: Finished difference. Result has 292 places, 216 transitions, 2142 flow [2024-06-14 14:02:25,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2142, PETRI_PLACES=292, PETRI_TRANSITIONS=216} [2024-06-14 14:02:25,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-14 14:02:25,452 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 216 transitions, 2142 flow [2024-06-14 14:02:25,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:25,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:25,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:25,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 14:02:25,453 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:25,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:25,453 INFO L85 PathProgramCache]: Analyzing trace with hash -555222933, now seen corresponding path program 21 times [2024-06-14 14:02:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396426708] [2024-06-14 14:02:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:25,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:31,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:31,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396426708] [2024-06-14 14:02:31,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396426708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:31,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:31,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:31,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33101347] [2024-06-14 14:02:31,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:31,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:31,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:31,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:31,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:31,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:02:31,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 216 transitions, 2142 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:31,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:31,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:02:31,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:31,803 INFO L124 PetriNetUnfolderBase]: 607/1149 cut-off events. [2024-06-14 14:02:31,803 INFO L125 PetriNetUnfolderBase]: For 81064/81066 co-relation queries the response was YES. [2024-06-14 14:02:31,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1149 events. 607/1149 cut-off events. For 81064/81066 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6362 event pairs, 115 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 6309. Up to 962 conditions per place. [2024-06-14 14:02:31,816 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 187 selfloop transitions, 43 changer transitions 0/232 dead transitions. [2024-06-14 14:02:31,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 232 transitions, 2716 flow [2024-06-14 14:02:31,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:31,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 14:02:31,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 14:02:31,817 INFO L175 Difference]: Start difference. First operand has 292 places, 216 transitions, 2142 flow. Second operand 10 states and 107 transitions. [2024-06-14 14:02:31,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 232 transitions, 2716 flow [2024-06-14 14:02:32,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 232 transitions, 2574 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 14:02:32,155 INFO L231 Difference]: Finished difference. Result has 294 places, 217 transitions, 2158 flow [2024-06-14 14:02:32,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2158, PETRI_PLACES=294, PETRI_TRANSITIONS=217} [2024-06-14 14:02:32,156 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-14 14:02:32,156 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 217 transitions, 2158 flow [2024-06-14 14:02:32,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:32,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:32,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:32,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 14:02:32,157 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:32,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:32,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1503677723, now seen corresponding path program 22 times [2024-06-14 14:02:32,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:32,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80543586] [2024-06-14 14:02:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:32,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:37,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:37,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:37,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80543586] [2024-06-14 14:02:37,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80543586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:37,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:37,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:02:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777237385] [2024-06-14 14:02:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:37,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:02:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:02:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:02:37,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:02:37,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 217 transitions, 2158 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:37,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:37,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:02:37,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:37,839 INFO L124 PetriNetUnfolderBase]: 611/1155 cut-off events. [2024-06-14 14:02:37,839 INFO L125 PetriNetUnfolderBase]: For 82959/82959 co-relation queries the response was YES. [2024-06-14 14:02:37,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 1155 events. 611/1155 cut-off events. For 82959/82959 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6374 event pairs, 146 based on Foata normal form. 2/1157 useless extension candidates. Maximal degree in co-relation 6361. Up to 1040 conditions per place. [2024-06-14 14:02:37,851 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 35 changer transitions 0/231 dead transitions. [2024-06-14 14:02:37,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 231 transitions, 2724 flow [2024-06-14 14:02:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 14:02:37,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 14:02:37,853 INFO L175 Difference]: Start difference. First operand has 294 places, 217 transitions, 2158 flow. Second operand 10 states and 108 transitions. [2024-06-14 14:02:37,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 231 transitions, 2724 flow [2024-06-14 14:02:38,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 231 transitions, 2576 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-14 14:02:38,202 INFO L231 Difference]: Finished difference. Result has 296 places, 218 transitions, 2154 flow [2024-06-14 14:02:38,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2154, PETRI_PLACES=296, PETRI_TRANSITIONS=218} [2024-06-14 14:02:38,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-14 14:02:38,203 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 218 transitions, 2154 flow [2024-06-14 14:02:38,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:38,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:38,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:38,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 14:02:38,203 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:38,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1114786985, now seen corresponding path program 23 times [2024-06-14 14:02:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:38,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507893392] [2024-06-14 14:02:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:38,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:43,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:43,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507893392] [2024-06-14 14:02:43,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507893392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:43,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:43,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:02:43,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494196860] [2024-06-14 14:02:43,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:43,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:02:43,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:43,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:02:43,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:02:43,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:02:43,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 218 transitions, 2154 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:43,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:43,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:02:43,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:44,031 INFO L124 PetriNetUnfolderBase]: 615/1165 cut-off events. [2024-06-14 14:02:44,031 INFO L125 PetriNetUnfolderBase]: For 84714/84716 co-relation queries the response was YES. [2024-06-14 14:02:44,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6544 conditions, 1165 events. 615/1165 cut-off events. For 84714/84716 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6470 event pairs, 117 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 6395. Up to 969 conditions per place. [2024-06-14 14:02:44,043 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 47 changer transitions 0/234 dead transitions. [2024-06-14 14:02:44,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 234 transitions, 2740 flow [2024-06-14 14:02:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:02:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:02:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 14:02:44,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 14:02:44,044 INFO L175 Difference]: Start difference. First operand has 296 places, 218 transitions, 2154 flow. Second operand 10 states and 110 transitions. [2024-06-14 14:02:44,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 234 transitions, 2740 flow [2024-06-14 14:02:44,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 234 transitions, 2606 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-14 14:02:44,378 INFO L231 Difference]: Finished difference. Result has 298 places, 219 transitions, 2190 flow [2024-06-14 14:02:44,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2190, PETRI_PLACES=298, PETRI_TRANSITIONS=219} [2024-06-14 14:02:44,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 14:02:44,379 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 219 transitions, 2190 flow [2024-06-14 14:02:44,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:44,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:44,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:44,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 14:02:44,379 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:44,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash 527853389, now seen corresponding path program 8 times [2024-06-14 14:02:44,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:44,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136928521] [2024-06-14 14:02:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:44,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:50,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:50,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136928521] [2024-06-14 14:02:50,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136928521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:50,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:50,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:50,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555509934] [2024-06-14 14:02:50,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:50,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:50,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:50,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:50,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:50,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:02:50,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 219 transitions, 2190 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:50,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:50,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:02:50,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:51,565 INFO L124 PetriNetUnfolderBase]: 631/1201 cut-off events. [2024-06-14 14:02:51,565 INFO L125 PetriNetUnfolderBase]: For 126534/126536 co-relation queries the response was YES. [2024-06-14 14:02:51,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6617 conditions, 1201 events. 631/1201 cut-off events. For 126534/126536 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6682 event pairs, 123 based on Foata normal form. 10/1211 useless extension candidates. Maximal degree in co-relation 6467. Up to 944 conditions per place. [2024-06-14 14:02:51,578 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 49 changer transitions 11/240 dead transitions. [2024-06-14 14:02:51,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 240 transitions, 2774 flow [2024-06-14 14:02:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:02:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:02:51,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 14:02:51,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 14:02:51,580 INFO L175 Difference]: Start difference. First operand has 298 places, 219 transitions, 2190 flow. Second operand 11 states and 124 transitions. [2024-06-14 14:02:51,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 240 transitions, 2774 flow [2024-06-14 14:02:51,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 240 transitions, 2614 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-14 14:02:51,963 INFO L231 Difference]: Finished difference. Result has 301 places, 216 transitions, 2110 flow [2024-06-14 14:02:51,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2110, PETRI_PLACES=301, PETRI_TRANSITIONS=216} [2024-06-14 14:02:51,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 14:02:51,964 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 216 transitions, 2110 flow [2024-06-14 14:02:51,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:51,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:51,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:51,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 14:02:51,967 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:51,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1115063691, now seen corresponding path program 9 times [2024-06-14 14:02:51,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:51,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026956326] [2024-06-14 14:02:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:02:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:02:57,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:02:57,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026956326] [2024-06-14 14:02:57,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026956326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:02:57,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:02:57,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:02:57,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920441965] [2024-06-14 14:02:57,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:02:57,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:02:57,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:02:57,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:02:57,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:02:57,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:02:57,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 216 transitions, 2110 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:57,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:02:57,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:02:57,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:02:57,820 INFO L124 PetriNetUnfolderBase]: 646/1238 cut-off events. [2024-06-14 14:02:57,820 INFO L125 PetriNetUnfolderBase]: For 169697/169699 co-relation queries the response was YES. [2024-06-14 14:02:57,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7704 conditions, 1238 events. 646/1238 cut-off events. For 169697/169699 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6900 event pairs, 130 based on Foata normal form. 8/1246 useless extension candidates. Maximal degree in co-relation 7553. Up to 922 conditions per place. [2024-06-14 14:02:57,833 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 48 changer transitions 7/241 dead transitions. [2024-06-14 14:02:57,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 241 transitions, 2944 flow [2024-06-14 14:02:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:02:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:02:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 14:02:57,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 14:02:57,834 INFO L175 Difference]: Start difference. First operand has 301 places, 216 transitions, 2110 flow. Second operand 11 states and 126 transitions. [2024-06-14 14:02:57,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 241 transitions, 2944 flow [2024-06-14 14:02:58,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 241 transitions, 2781 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:02:58,355 INFO L231 Difference]: Finished difference. Result has 299 places, 214 transitions, 2036 flow [2024-06-14 14:02:58,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2036, PETRI_PLACES=299, PETRI_TRANSITIONS=214} [2024-06-14 14:02:58,356 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-14 14:02:58,356 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 214 transitions, 2036 flow [2024-06-14 14:02:58,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:02:58,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:02:58,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:02:58,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 14:02:58,356 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:02:58,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:02:58,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1503683303, now seen corresponding path program 24 times [2024-06-14 14:02:58,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:02:58,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305952495] [2024-06-14 14:02:58,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:02:58,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:02:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:03,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:03,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305952495] [2024-06-14 14:03:03,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305952495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:03,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:03,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:03:03,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163216983] [2024-06-14 14:03:03,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:03,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:03:03,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:03,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:03:03,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:03:03,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:03:03,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 214 transitions, 2036 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:03,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:03,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:03:03,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:04,337 INFO L124 PetriNetUnfolderBase]: 668/1278 cut-off events. [2024-06-14 14:03:04,338 INFO L125 PetriNetUnfolderBase]: For 208151/208151 co-relation queries the response was YES. [2024-06-14 14:03:04,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9410 conditions, 1278 events. 668/1278 cut-off events. For 208151/208151 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7136 event pairs, 177 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 9259. Up to 1081 conditions per place. [2024-06-14 14:03:04,351 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 36 changer transitions 0/234 dead transitions. [2024-06-14 14:03:04,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 234 transitions, 2942 flow [2024-06-14 14:03:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:03:04,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:03:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 14:03:04,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 14:03:04,352 INFO L175 Difference]: Start difference. First operand has 299 places, 214 transitions, 2036 flow. Second operand 10 states and 113 transitions. [2024-06-14 14:03:04,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 234 transitions, 2942 flow [2024-06-14 14:03:05,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 234 transitions, 2842 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 14:03:05,066 INFO L231 Difference]: Finished difference. Result has 297 places, 216 transitions, 2162 flow [2024-06-14 14:03:05,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2162, PETRI_PLACES=297, PETRI_TRANSITIONS=216} [2024-06-14 14:03:05,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-14 14:03:05,066 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 216 transitions, 2162 flow [2024-06-14 14:03:05,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:05,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:05,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:05,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 14:03:05,067 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:05,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:05,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1503467977, now seen corresponding path program 10 times [2024-06-14 14:03:05,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:05,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094605749] [2024-06-14 14:03:05,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:05,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:09,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:09,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094605749] [2024-06-14 14:03:09,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094605749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:09,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:09,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:03:09,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884628653] [2024-06-14 14:03:09,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:09,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:03:09,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:03:09,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:03:09,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:03:09,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 216 transitions, 2162 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:09,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:09,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:03:09,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:10,328 INFO L124 PetriNetUnfolderBase]: 684/1314 cut-off events. [2024-06-14 14:03:10,328 INFO L125 PetriNetUnfolderBase]: For 246873/246873 co-relation queries the response was YES. [2024-06-14 14:03:10,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9525 conditions, 1314 events. 684/1314 cut-off events. For 246873/246873 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7416 event pairs, 189 based on Foata normal form. 10/1324 useless extension candidates. Maximal degree in co-relation 9375. Up to 1153 conditions per place. [2024-06-14 14:03:10,345 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 29 changer transitions 16/235 dead transitions. [2024-06-14 14:03:10,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 235 transitions, 2724 flow [2024-06-14 14:03:10,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:03:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:03:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 14:03:10,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 14:03:10,346 INFO L175 Difference]: Start difference. First operand has 297 places, 216 transitions, 2162 flow. Second operand 11 states and 121 transitions. [2024-06-14 14:03:10,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 235 transitions, 2724 flow [2024-06-14 14:03:11,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 235 transitions, 2593 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-14 14:03:11,208 INFO L231 Difference]: Finished difference. Result has 301 places, 210 transitions, 2052 flow [2024-06-14 14:03:11,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2052, PETRI_PLACES=301, PETRI_TRANSITIONS=210} [2024-06-14 14:03:11,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 14:03:11,209 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 210 transitions, 2052 flow [2024-06-14 14:03:11,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:11,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:11,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:11,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 14:03:11,210 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:11,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:11,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1190816193, now seen corresponding path program 11 times [2024-06-14 14:03:11,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:11,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553780988] [2024-06-14 14:03:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:11,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:16,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:16,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553780988] [2024-06-14 14:03:16,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553780988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:16,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:16,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:03:16,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20542058] [2024-06-14 14:03:16,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:16,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:03:16,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:16,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:03:16,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:03:16,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:03:16,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 210 transitions, 2052 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:16,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:16,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:03:16,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:17,107 INFO L124 PetriNetUnfolderBase]: 689/1333 cut-off events. [2024-06-14 14:03:17,107 INFO L125 PetriNetUnfolderBase]: For 291595/291595 co-relation queries the response was YES. [2024-06-14 14:03:17,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10563 conditions, 1333 events. 689/1333 cut-off events. For 291595/291595 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7552 event pairs, 194 based on Foata normal form. 8/1341 useless extension candidates. Maximal degree in co-relation 10412. Up to 1131 conditions per place. [2024-06-14 14:03:17,125 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 28 changer transitions 7/234 dead transitions. [2024-06-14 14:03:17,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 234 transitions, 2866 flow [2024-06-14 14:03:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:03:17,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:03:17,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 14:03:17,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 14:03:17,126 INFO L175 Difference]: Start difference. First operand has 301 places, 210 transitions, 2052 flow. Second operand 11 states and 125 transitions. [2024-06-14 14:03:17,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 234 transitions, 2866 flow [2024-06-14 14:03:17,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 234 transitions, 2788 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 14:03:17,994 INFO L231 Difference]: Finished difference. Result has 295 places, 208 transitions, 2025 flow [2024-06-14 14:03:17,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2025, PETRI_PLACES=295, PETRI_TRANSITIONS=208} [2024-06-14 14:03:17,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-14 14:03:17,995 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 208 transitions, 2025 flow [2024-06-14 14:03:17,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:17,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:17,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:17,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 14:03:17,995 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:17,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1496058667, now seen corresponding path program 12 times [2024-06-14 14:03:17,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:17,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521200987] [2024-06-14 14:03:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:17,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:22,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:22,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521200987] [2024-06-14 14:03:22,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521200987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:22,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:22,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:03:22,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164057352] [2024-06-14 14:03:22,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:22,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:03:22,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:03:22,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:03:22,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:03:22,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 208 transitions, 2025 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:22,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:22,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:03:22,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:23,725 INFO L124 PetriNetUnfolderBase]: 687/1331 cut-off events. [2024-06-14 14:03:23,725 INFO L125 PetriNetUnfolderBase]: For 285862/285862 co-relation queries the response was YES. [2024-06-14 14:03:23,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10412 conditions, 1331 events. 687/1331 cut-off events. For 285862/285862 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7553 event pairs, 206 based on Foata normal form. 10/1341 useless extension candidates. Maximal degree in co-relation 10264. Up to 1196 conditions per place. [2024-06-14 14:03:23,741 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 25 changer transitions 12/228 dead transitions. [2024-06-14 14:03:23,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 228 transitions, 2579 flow [2024-06-14 14:03:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:03:23,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:03:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 14:03:23,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 14:03:23,742 INFO L175 Difference]: Start difference. First operand has 295 places, 208 transitions, 2025 flow. Second operand 11 states and 122 transitions. [2024-06-14 14:03:23,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 228 transitions, 2579 flow [2024-06-14 14:03:24,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 228 transitions, 2523 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:03:24,787 INFO L231 Difference]: Finished difference. Result has 294 places, 204 transitions, 1993 flow [2024-06-14 14:03:24,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1969, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1993, PETRI_PLACES=294, PETRI_TRANSITIONS=204} [2024-06-14 14:03:24,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-14 14:03:24,788 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 204 transitions, 1993 flow [2024-06-14 14:03:24,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:24,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:24,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:24,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 14:03:24,788 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:24,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:24,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1115054391, now seen corresponding path program 13 times [2024-06-14 14:03:24,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:24,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113633346] [2024-06-14 14:03:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:24,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:30,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:30,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113633346] [2024-06-14 14:03:30,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113633346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:30,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:30,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:03:30,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23231392] [2024-06-14 14:03:30,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:30,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:03:30,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:30,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:03:30,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:03:30,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:03:30,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 204 transitions, 1993 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:30,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:30,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:03:30,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:30,922 INFO L124 PetriNetUnfolderBase]: 678/1318 cut-off events. [2024-06-14 14:03:30,923 INFO L125 PetriNetUnfolderBase]: For 282314/282316 co-relation queries the response was YES. [2024-06-14 14:03:30,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10305 conditions, 1318 events. 678/1318 cut-off events. For 282314/282316 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7472 event pairs, 171 based on Foata normal form. 10/1328 useless extension candidates. Maximal degree in co-relation 10158. Up to 1069 conditions per place. [2024-06-14 14:03:30,943 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 45 changer transitions 12/225 dead transitions. [2024-06-14 14:03:30,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 225 transitions, 2547 flow [2024-06-14 14:03:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:03:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:03:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 14:03:30,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 14:03:30,944 INFO L175 Difference]: Start difference. First operand has 294 places, 204 transitions, 1993 flow. Second operand 11 states and 123 transitions. [2024-06-14 14:03:30,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 225 transitions, 2547 flow [2024-06-14 14:03:31,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 225 transitions, 2480 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-14 14:03:31,726 INFO L231 Difference]: Finished difference. Result has 289 places, 200 transitions, 1993 flow [2024-06-14 14:03:31,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1993, PETRI_PLACES=289, PETRI_TRANSITIONS=200} [2024-06-14 14:03:31,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-14 14:03:31,726 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 200 transitions, 1993 flow [2024-06-14 14:03:31,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:31,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:31,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:31,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 14:03:31,727 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:31,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1496326073, now seen corresponding path program 25 times [2024-06-14 14:03:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:31,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139045300] [2024-06-14 14:03:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:36,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:36,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139045300] [2024-06-14 14:03:36,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139045300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:36,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:36,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:03:36,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693791738] [2024-06-14 14:03:36,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:36,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:03:36,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:36,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:03:36,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:03:37,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:03:37,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 200 transitions, 1993 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:37,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:37,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:03:37,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:37,685 INFO L124 PetriNetUnfolderBase]: 657/1273 cut-off events. [2024-06-14 14:03:37,685 INFO L125 PetriNetUnfolderBase]: For 238267/238267 co-relation queries the response was YES. [2024-06-14 14:03:37,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10238 conditions, 1273 events. 657/1273 cut-off events. For 238267/238267 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7135 event pairs, 202 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 10092. Up to 1183 conditions per place. [2024-06-14 14:03:37,698 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 27 changer transitions 0/214 dead transitions. [2024-06-14 14:03:37,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 214 transitions, 2527 flow [2024-06-14 14:03:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:03:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:03:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 14:03:37,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 14:03:37,700 INFO L175 Difference]: Start difference. First operand has 289 places, 200 transitions, 1993 flow. Second operand 10 states and 106 transitions. [2024-06-14 14:03:37,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 214 transitions, 2527 flow [2024-06-14 14:03:38,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 214 transitions, 2431 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 14:03:38,460 INFO L231 Difference]: Finished difference. Result has 284 places, 201 transitions, 2027 flow [2024-06-14 14:03:38,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2027, PETRI_PLACES=284, PETRI_TRANSITIONS=201} [2024-06-14 14:03:38,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 14:03:38,461 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 201 transitions, 2027 flow [2024-06-14 14:03:38,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:38,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:38,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:38,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 14:03:38,461 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:38,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash 907983815, now seen corresponding path program 26 times [2024-06-14 14:03:38,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:38,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848396093] [2024-06-14 14:03:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:38,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:43,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:43,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848396093] [2024-06-14 14:03:43,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848396093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:43,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:43,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:03:43,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746420345] [2024-06-14 14:03:43,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:43,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:03:43,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:43,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:03:43,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:03:43,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:03:43,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 201 transitions, 2027 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:43,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:43,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:03:43,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:44,196 INFO L124 PetriNetUnfolderBase]: 654/1270 cut-off events. [2024-06-14 14:03:44,197 INFO L125 PetriNetUnfolderBase]: For 221248/221250 co-relation queries the response was YES. [2024-06-14 14:03:44,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9836 conditions, 1270 events. 654/1270 cut-off events. For 221248/221250 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7098 event pairs, 162 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 9692. Up to 1092 conditions per place. [2024-06-14 14:03:44,211 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 173 selfloop transitions, 40 changer transitions 0/215 dead transitions. [2024-06-14 14:03:44,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 215 transitions, 2491 flow [2024-06-14 14:03:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:03:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:03:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:03:44,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-14 14:03:44,212 INFO L175 Difference]: Start difference. First operand has 284 places, 201 transitions, 2027 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:03:44,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 215 transitions, 2491 flow [2024-06-14 14:03:45,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 215 transitions, 2371 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-14 14:03:45,007 INFO L231 Difference]: Finished difference. Result has 286 places, 201 transitions, 1991 flow [2024-06-14 14:03:45,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1991, PETRI_PLACES=286, PETRI_TRANSITIONS=201} [2024-06-14 14:03:45,013 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-14 14:03:45,013 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 201 transitions, 1991 flow [2024-06-14 14:03:45,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:45,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:45,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:45,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 14:03:45,014 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:45,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash -748947017, now seen corresponding path program 14 times [2024-06-14 14:03:45,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:45,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189239468] [2024-06-14 14:03:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:45,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189239468] [2024-06-14 14:03:51,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189239468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:51,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:51,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:03:51,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316657770] [2024-06-14 14:03:51,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:51,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:03:51,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:51,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:03:51,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:03:51,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:03:51,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 201 transitions, 1991 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:51,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:51,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:03:51,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:51,713 INFO L124 PetriNetUnfolderBase]: 641/1247 cut-off events. [2024-06-14 14:03:51,714 INFO L125 PetriNetUnfolderBase]: For 213418/213420 co-relation queries the response was YES. [2024-06-14 14:03:51,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8699 conditions, 1247 events. 641/1247 cut-off events. For 213418/213420 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6984 event pairs, 159 based on Foata normal form. 10/1257 useless extension candidates. Maximal degree in co-relation 8554. Up to 1025 conditions per place. [2024-06-14 14:03:51,727 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 168 selfloop transitions, 40 changer transitions 11/221 dead transitions. [2024-06-14 14:03:51,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 221 transitions, 2531 flow [2024-06-14 14:03:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:03:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:03:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 14:03:51,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-14 14:03:51,729 INFO L175 Difference]: Start difference. First operand has 286 places, 201 transitions, 1991 flow. Second operand 11 states and 118 transitions. [2024-06-14 14:03:51,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 221 transitions, 2531 flow [2024-06-14 14:03:52,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 221 transitions, 2311 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-06-14 14:03:52,378 INFO L231 Difference]: Finished difference. Result has 285 places, 198 transitions, 1835 flow [2024-06-14 14:03:52,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1835, PETRI_PLACES=285, PETRI_TRANSITIONS=198} [2024-06-14 14:03:52,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-14 14:03:52,379 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 198 transitions, 1835 flow [2024-06-14 14:03:52,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:52,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:52,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:52,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 14:03:52,380 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:52,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:52,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1806357237, now seen corresponding path program 15 times [2024-06-14 14:03:52,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:52,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508347292] [2024-06-14 14:03:52,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:52,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:03:57,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:03:57,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:03:57,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508347292] [2024-06-14 14:03:57,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508347292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:03:57,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:03:57,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:03:57,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457828342] [2024-06-14 14:03:57,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:03:57,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:03:57,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:03:57,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:03:57,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:03:57,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:03:57,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 198 transitions, 1835 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:57,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:03:57,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:03:57,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:03:58,489 INFO L124 PetriNetUnfolderBase]: 602/1172 cut-off events. [2024-06-14 14:03:58,490 INFO L125 PetriNetUnfolderBase]: For 164039/164039 co-relation queries the response was YES. [2024-06-14 14:03:58,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7097 conditions, 1172 events. 602/1172 cut-off events. For 164039/164039 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6513 event pairs, 165 based on Foata normal form. 10/1182 useless extension candidates. Maximal degree in co-relation 6955. Up to 1046 conditions per place. [2024-06-14 14:03:58,502 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 23 changer transitions 11/217 dead transitions. [2024-06-14 14:03:58,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 217 transitions, 2361 flow [2024-06-14 14:03:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:03:58,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:03:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 14:03:58,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-14 14:03:58,504 INFO L175 Difference]: Start difference. First operand has 285 places, 198 transitions, 1835 flow. Second operand 11 states and 118 transitions. [2024-06-14 14:03:58,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 217 transitions, 2361 flow [2024-06-14 14:03:58,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 217 transitions, 2277 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:03:58,922 INFO L231 Difference]: Finished difference. Result has 282 places, 195 transitions, 1781 flow [2024-06-14 14:03:58,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1781, PETRI_PLACES=282, PETRI_TRANSITIONS=195} [2024-06-14 14:03:58,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-14 14:03:58,923 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 195 transitions, 1781 flow [2024-06-14 14:03:58,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:03:58,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:03:58,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:03:58,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 14:03:58,923 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:03:58,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:03:58,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1248164695, now seen corresponding path program 27 times [2024-06-14 14:03:58,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:03:58,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514062807] [2024-06-14 14:03:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:03:58,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:03:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:03,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514062807] [2024-06-14 14:04:03,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514062807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:03,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:03,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:04:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593161622] [2024-06-14 14:04:03,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:03,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:04:03,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:04:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:04:03,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:04:03,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 195 transitions, 1781 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:03,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:03,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:04:03,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:04,032 INFO L124 PetriNetUnfolderBase]: 560/1094 cut-off events. [2024-06-14 14:04:04,032 INFO L125 PetriNetUnfolderBase]: For 112066/112066 co-relation queries the response was YES. [2024-06-14 14:04:04,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5462 conditions, 1094 events. 560/1094 cut-off events. For 112066/112066 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6074 event pairs, 149 based on Foata normal form. 12/1106 useless extension candidates. Maximal degree in co-relation 5321. Up to 988 conditions per place. [2024-06-14 14:04:04,043 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 22 changer transitions 5/212 dead transitions. [2024-06-14 14:04:04,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 212 transitions, 2285 flow [2024-06-14 14:04:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 14:04:04,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-14 14:04:04,044 INFO L175 Difference]: Start difference. First operand has 282 places, 195 transitions, 1781 flow. Second operand 11 states and 115 transitions. [2024-06-14 14:04:04,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 212 transitions, 2285 flow [2024-06-14 14:04:04,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 212 transitions, 2185 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-14 14:04:04,274 INFO L231 Difference]: Finished difference. Result has 279 places, 194 transitions, 1723 flow [2024-06-14 14:04:04,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1723, PETRI_PLACES=279, PETRI_TRANSITIONS=194} [2024-06-14 14:04:04,275 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-14 14:04:04,275 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 194 transitions, 1723 flow [2024-06-14 14:04:04,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:04,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:04,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:04,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 14:04:04,276 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:04,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:04,276 INFO L85 PathProgramCache]: Analyzing trace with hash -934188759, now seen corresponding path program 16 times [2024-06-14 14:04:04,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:04,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569631544] [2024-06-14 14:04:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:04,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:09,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:09,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569631544] [2024-06-14 14:04:09,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569631544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:09,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:09,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:04:09,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536906933] [2024-06-14 14:04:09,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:09,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:04:09,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:09,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:04:09,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:04:09,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:04:09,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 194 transitions, 1723 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:09,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:09,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:04:09,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:09,706 INFO L124 PetriNetUnfolderBase]: 560/1102 cut-off events. [2024-06-14 14:04:09,706 INFO L125 PetriNetUnfolderBase]: For 88514/88514 co-relation queries the response was YES. [2024-06-14 14:04:09,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5359 conditions, 1102 events. 560/1102 cut-off events. For 88514/88514 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6140 event pairs, 147 based on Foata normal form. 8/1110 useless extension candidates. Maximal degree in co-relation 5219. Up to 978 conditions per place. [2024-06-14 14:04:09,716 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 18 changer transitions 10/212 dead transitions. [2024-06-14 14:04:09,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 212 transitions, 2229 flow [2024-06-14 14:04:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:04:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:04:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 14:04:09,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 14:04:09,717 INFO L175 Difference]: Start difference. First operand has 279 places, 194 transitions, 1723 flow. Second operand 10 states and 109 transitions. [2024-06-14 14:04:09,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 212 transitions, 2229 flow [2024-06-14 14:04:09,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 212 transitions, 2171 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 14:04:09,930 INFO L231 Difference]: Finished difference. Result has 279 places, 191 transitions, 1681 flow [2024-06-14 14:04:09,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1681, PETRI_PLACES=279, PETRI_TRANSITIONS=191} [2024-06-14 14:04:09,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-14 14:04:09,930 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 191 transitions, 1681 flow [2024-06-14 14:04:09,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:09,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:09,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:09,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 14:04:09,931 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:09,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1248156759, now seen corresponding path program 17 times [2024-06-14 14:04:09,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:09,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539220276] [2024-06-14 14:04:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:09,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:15,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:15,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539220276] [2024-06-14 14:04:15,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539220276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:15,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:15,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:04:15,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942931014] [2024-06-14 14:04:15,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:15,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:04:15,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:04:15,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:04:15,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:04:15,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 191 transitions, 1681 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:15,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:15,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:04:15,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:15,662 INFO L124 PetriNetUnfolderBase]: 551/1079 cut-off events. [2024-06-14 14:04:15,662 INFO L125 PetriNetUnfolderBase]: For 96220/96220 co-relation queries the response was YES. [2024-06-14 14:04:15,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 1079 events. 551/1079 cut-off events. For 96220/96220 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5983 event pairs, 149 based on Foata normal form. 10/1089 useless extension candidates. Maximal degree in co-relation 5117. Up to 978 conditions per place. [2024-06-14 14:04:15,672 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 19 changer transitions 9/212 dead transitions. [2024-06-14 14:04:15,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 212 transitions, 2207 flow [2024-06-14 14:04:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:04:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:04:15,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 14:04:15,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-14 14:04:15,673 INFO L175 Difference]: Start difference. First operand has 279 places, 191 transitions, 1681 flow. Second operand 12 states and 121 transitions. [2024-06-14 14:04:15,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 212 transitions, 2207 flow [2024-06-14 14:04:15,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 212 transitions, 2098 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 14:04:15,914 INFO L231 Difference]: Finished difference. Result has 278 places, 190 transitions, 1615 flow [2024-06-14 14:04:15,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1615, PETRI_PLACES=278, PETRI_TRANSITIONS=190} [2024-06-14 14:04:15,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-14 14:04:15,914 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 190 transitions, 1615 flow [2024-06-14 14:04:15,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:15,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:15,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:15,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 14:04:15,915 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:15,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:15,915 INFO L85 PathProgramCache]: Analyzing trace with hash -923146869, now seen corresponding path program 18 times [2024-06-14 14:04:15,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:15,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193984552] [2024-06-14 14:04:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:15,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:20,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193984552] [2024-06-14 14:04:20,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193984552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:20,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:20,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:04:20,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241021307] [2024-06-14 14:04:20,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:20,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:04:20,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:20,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:04:20,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:04:20,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:04:20,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 190 transitions, 1615 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:20,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:20,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:04:20,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:20,886 INFO L124 PetriNetUnfolderBase]: 559/1103 cut-off events. [2024-06-14 14:04:20,886 INFO L125 PetriNetUnfolderBase]: For 123242/123242 co-relation queries the response was YES. [2024-06-14 14:04:20,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6033 conditions, 1103 events. 559/1103 cut-off events. For 123242/123242 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6120 event pairs, 153 based on Foata normal form. 8/1111 useless extension candidates. Maximal degree in co-relation 5893. Up to 927 conditions per place. [2024-06-14 14:04:20,898 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 14 changer transitions 11/212 dead transitions. [2024-06-14 14:04:20,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 212 transitions, 2349 flow [2024-06-14 14:04:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:20,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 14:04:20,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-14 14:04:20,899 INFO L175 Difference]: Start difference. First operand has 278 places, 190 transitions, 1615 flow. Second operand 11 states and 116 transitions. [2024-06-14 14:04:20,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 212 transitions, 2349 flow [2024-06-14 14:04:21,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 212 transitions, 2291 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 14:04:21,222 INFO L231 Difference]: Finished difference. Result has 276 places, 186 transitions, 1569 flow [2024-06-14 14:04:21,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1569, PETRI_PLACES=276, PETRI_TRANSITIONS=186} [2024-06-14 14:04:21,223 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-14 14:04:21,223 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 186 transitions, 1569 flow [2024-06-14 14:04:21,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:21,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:21,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:21,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 14:04:21,236 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:21,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:21,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1247897289, now seen corresponding path program 19 times [2024-06-14 14:04:21,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:21,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058817375] [2024-06-14 14:04:21,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:21,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:31,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:31,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058817375] [2024-06-14 14:04:31,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058817375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:31,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:31,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:04:31,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180984693] [2024-06-14 14:04:31,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:31,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:04:31,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:04:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:04:31,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:04:31,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 186 transitions, 1569 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:31,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:31,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:04:31,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:32,249 INFO L124 PetriNetUnfolderBase]: 552/1090 cut-off events. [2024-06-14 14:04:32,249 INFO L125 PetriNetUnfolderBase]: For 132816/132816 co-relation queries the response was YES. [2024-06-14 14:04:32,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5947 conditions, 1090 events. 552/1090 cut-off events. For 132816/132816 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6040 event pairs, 163 based on Foata normal form. 10/1100 useless extension candidates. Maximal degree in co-relation 5808. Up to 1000 conditions per place. [2024-06-14 14:04:32,260 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 15 changer transitions 9/204 dead transitions. [2024-06-14 14:04:32,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 204 transitions, 2055 flow [2024-06-14 14:04:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:04:32,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:04:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-14 14:04:32,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-14 14:04:32,261 INFO L175 Difference]: Start difference. First operand has 276 places, 186 transitions, 1569 flow. Second operand 12 states and 116 transitions. [2024-06-14 14:04:32,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 204 transitions, 2055 flow [2024-06-14 14:04:32,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 204 transitions, 2019 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 14:04:32,575 INFO L231 Difference]: Finished difference. Result has 272 places, 183 transitions, 1551 flow [2024-06-14 14:04:32,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1551, PETRI_PLACES=272, PETRI_TRANSITIONS=183} [2024-06-14 14:04:32,576 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-14 14:04:32,576 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 183 transitions, 1551 flow [2024-06-14 14:04:32,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:32,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:32,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:32,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 14:04:32,576 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:32,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1247887989, now seen corresponding path program 20 times [2024-06-14 14:04:32,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:32,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011734828] [2024-06-14 14:04:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:32,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:37,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011734828] [2024-06-14 14:04:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011734828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:37,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:37,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:04:37,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756566565] [2024-06-14 14:04:37,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:37,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:04:37,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:37,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:04:37,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:04:37,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:04:37,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 183 transitions, 1551 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:37,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:37,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:04:37,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:38,299 INFO L124 PetriNetUnfolderBase]: 526/1044 cut-off events. [2024-06-14 14:04:38,299 INFO L125 PetriNetUnfolderBase]: For 99426/99426 co-relation queries the response was YES. [2024-06-14 14:04:38,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5294 conditions, 1044 events. 526/1044 cut-off events. For 99426/99426 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5736 event pairs, 151 based on Foata normal form. 8/1052 useless extension candidates. Maximal degree in co-relation 5158. Up to 964 conditions per place. [2024-06-14 14:04:38,309 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 176 selfloop transitions, 12 changer transitions 10/200 dead transitions. [2024-06-14 14:04:38,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 200 transitions, 2017 flow [2024-06-14 14:04:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-14 14:04:38,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-14 14:04:38,310 INFO L175 Difference]: Start difference. First operand has 272 places, 183 transitions, 1551 flow. Second operand 11 states and 108 transitions. [2024-06-14 14:04:38,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 200 transitions, 2017 flow [2024-06-14 14:04:38,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 200 transitions, 1981 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 14:04:38,600 INFO L231 Difference]: Finished difference. Result has 269 places, 180 transitions, 1524 flow [2024-06-14 14:04:38,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1524, PETRI_PLACES=269, PETRI_TRANSITIONS=180} [2024-06-14 14:04:38,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-14 14:04:38,607 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 180 transitions, 1524 flow [2024-06-14 14:04:38,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:38,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:38,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:38,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 14:04:38,608 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:38,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:38,608 INFO L85 PathProgramCache]: Analyzing trace with hash -706461052, now seen corresponding path program 1 times [2024-06-14 14:04:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:38,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151400013] [2024-06-14 14:04:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:38,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:43,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:43,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151400013] [2024-06-14 14:04:43,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151400013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:43,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:43,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:43,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260085566] [2024-06-14 14:04:43,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:43,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:43,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:43,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:43,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:44,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:04:44,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 180 transitions, 1524 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:44,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:44,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:04:44,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:44,512 INFO L124 PetriNetUnfolderBase]: 515/1023 cut-off events. [2024-06-14 14:04:44,512 INFO L125 PetriNetUnfolderBase]: For 90052/90052 co-relation queries the response was YES. [2024-06-14 14:04:44,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5159 conditions, 1023 events. 515/1023 cut-off events. For 90052/90052 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5600 event pairs, 78 based on Foata normal form. 6/1029 useless extension candidates. Maximal degree in co-relation 5024. Up to 729 conditions per place. [2024-06-14 14:04:44,522 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 141 selfloop transitions, 25 changer transitions 32/200 dead transitions. [2024-06-14 14:04:44,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 200 transitions, 1968 flow [2024-06-14 14:04:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-14 14:04:44,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-14 14:04:44,523 INFO L175 Difference]: Start difference. First operand has 269 places, 180 transitions, 1524 flow. Second operand 11 states and 111 transitions. [2024-06-14 14:04:44,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 200 transitions, 1968 flow [2024-06-14 14:04:44,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 200 transitions, 1938 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 14:04:44,839 INFO L231 Difference]: Finished difference. Result has 265 places, 162 transitions, 1368 flow [2024-06-14 14:04:44,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1368, PETRI_PLACES=265, PETRI_TRANSITIONS=162} [2024-06-14 14:04:44,839 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-14 14:04:44,839 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 162 transitions, 1368 flow [2024-06-14 14:04:44,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:44,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:44,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:44,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 14:04:44,840 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:44,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1472195788, now seen corresponding path program 2 times [2024-06-14 14:04:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:44,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740590379] [2024-06-14 14:04:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:44,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:50,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:50,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740590379] [2024-06-14 14:04:50,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740590379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:50,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:50,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:04:50,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125796530] [2024-06-14 14:04:50,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:50,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:04:50,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:04:50,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:04:50,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:04:50,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 162 transitions, 1368 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:50,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:50,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:04:50,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:50,924 INFO L124 PetriNetUnfolderBase]: 469/943 cut-off events. [2024-06-14 14:04:50,924 INFO L125 PetriNetUnfolderBase]: For 120335/120335 co-relation queries the response was YES. [2024-06-14 14:04:50,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 943 events. 469/943 cut-off events. For 120335/120335 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5029 event pairs, 103 based on Foata normal form. 6/949 useless extension candidates. Maximal degree in co-relation 5455. Up to 684 conditions per place. [2024-06-14 14:04:50,933 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 35 changer transitions 11/184 dead transitions. [2024-06-14 14:04:50,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 184 transitions, 2006 flow [2024-06-14 14:04:50,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 14:04:50,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 14:04:50,934 INFO L175 Difference]: Start difference. First operand has 265 places, 162 transitions, 1368 flow. Second operand 11 states and 122 transitions. [2024-06-14 14:04:50,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 184 transitions, 2006 flow [2024-06-14 14:04:51,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 184 transitions, 1928 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-14 14:04:51,170 INFO L231 Difference]: Finished difference. Result has 247 places, 158 transitions, 1345 flow [2024-06-14 14:04:51,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1345, PETRI_PLACES=247, PETRI_TRANSITIONS=158} [2024-06-14 14:04:51,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-14 14:04:51,171 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 158 transitions, 1345 flow [2024-06-14 14:04:51,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:51,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:51,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:51,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 14:04:51,172 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:51,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:51,172 INFO L85 PathProgramCache]: Analyzing trace with hash 367775966, now seen corresponding path program 3 times [2024-06-14 14:04:51,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:51,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803809299] [2024-06-14 14:04:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:04:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:04:56,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:04:56,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803809299] [2024-06-14 14:04:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803809299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:04:56,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:04:56,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:04:56,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543008136] [2024-06-14 14:04:56,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:04:56,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:04:56,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:04:56,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:04:56,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:04:56,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 14:04:56,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 158 transitions, 1345 flow. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:56,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:04:56,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 14:04:56,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:04:57,055 INFO L124 PetriNetUnfolderBase]: 457/923 cut-off events. [2024-06-14 14:04:57,055 INFO L125 PetriNetUnfolderBase]: For 110206/110206 co-relation queries the response was YES. [2024-06-14 14:04:57,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 923 events. 457/923 cut-off events. For 110206/110206 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4892 event pairs, 101 based on Foata normal form. 6/929 useless extension candidates. Maximal degree in co-relation 5318. Up to 751 conditions per place. [2024-06-14 14:04:57,063 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 21 changer transitions 22/176 dead transitions. [2024-06-14 14:04:57,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 176 transitions, 1737 flow [2024-06-14 14:04:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:04:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:04:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 14:04:57,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 14:04:57,064 INFO L175 Difference]: Start difference. First operand has 247 places, 158 transitions, 1345 flow. Second operand 11 states and 122 transitions. [2024-06-14 14:04:57,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 176 transitions, 1737 flow [2024-06-14 14:04:57,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 176 transitions, 1665 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 14:04:57,293 INFO L231 Difference]: Finished difference. Result has 244 places, 149 transitions, 1233 flow [2024-06-14 14:04:57,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1233, PETRI_PLACES=244, PETRI_TRANSITIONS=149} [2024-06-14 14:04:57,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 14:04:57,294 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 149 transitions, 1233 flow [2024-06-14 14:04:57,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:04:57,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:04:57,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:04:57,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 14:04:57,294 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:04:57,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:04:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1472368768, now seen corresponding path program 4 times [2024-06-14 14:04:57,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:04:57,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107339085] [2024-06-14 14:04:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:04:57,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:04:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:05:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:05:02,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:05:02,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107339085] [2024-06-14 14:05:02,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107339085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:05:02,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:05:02,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:05:02,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227500851] [2024-06-14 14:05:02,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:05:02,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:05:02,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:05:02,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:05:02,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:05:02,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:05:02,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 149 transitions, 1233 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:05:02,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:05:02,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:05:02,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:05:03,647 INFO L124 PetriNetUnfolderBase]: 427/869 cut-off events. [2024-06-14 14:05:03,647 INFO L125 PetriNetUnfolderBase]: For 104341/104341 co-relation queries the response was YES. [2024-06-14 14:05:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5160 conditions, 869 events. 427/869 cut-off events. For 104341/104341 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4559 event pairs, 95 based on Foata normal form. 6/875 useless extension candidates. Maximal degree in co-relation 5050. Up to 630 conditions per place. [2024-06-14 14:05:03,655 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 32 changer transitions 11/171 dead transitions. [2024-06-14 14:05:03,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 171 transitions, 1837 flow [2024-06-14 14:05:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:05:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:05:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 14:05:03,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 14:05:03,656 INFO L175 Difference]: Start difference. First operand has 244 places, 149 transitions, 1233 flow. Second operand 11 states and 120 transitions. [2024-06-14 14:05:03,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 171 transitions, 1837 flow [2024-06-14 14:05:03,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 171 transitions, 1771 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-14 14:05:03,856 INFO L231 Difference]: Finished difference. Result has 234 places, 145 transitions, 1203 flow [2024-06-14 14:05:03,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1203, PETRI_PLACES=234, PETRI_TRANSITIONS=145} [2024-06-14 14:05:03,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-14 14:05:03,856 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 145 transitions, 1203 flow [2024-06-14 14:05:03,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:05:03,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:05:03,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:05:03,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 14:05:03,857 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:05:03,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:05:03,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1472375526, now seen corresponding path program 1 times [2024-06-14 14:05:03,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:05:03,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63525509] [2024-06-14 14:05:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:05:03,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:05:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:05:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:05:09,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:05:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63525509] [2024-06-14 14:05:09,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63525509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:05:09,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:05:09,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:05:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502671255] [2024-06-14 14:05:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:05:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:05:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:05:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:05:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:05:09,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:05:09,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 145 transitions, 1203 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:05:09,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:05:09,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:05:09,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:05:09,999 INFO L124 PetriNetUnfolderBase]: 397/811 cut-off events. [2024-06-14 14:05:09,999 INFO L125 PetriNetUnfolderBase]: For 75602/75602 co-relation queries the response was YES. [2024-06-14 14:05:10,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4230 conditions, 811 events. 397/811 cut-off events. For 75602/75602 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4190 event pairs, 87 based on Foata normal form. 8/819 useless extension candidates. Maximal degree in co-relation 4125. Up to 630 conditions per place. [2024-06-14 14:05:10,006 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 28 changer transitions 14/163 dead transitions. [2024-06-14 14:05:10,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 163 transitions, 1607 flow [2024-06-14 14:05:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:05:10,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:05:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 14:05:10,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-14 14:05:10,007 INFO L175 Difference]: Start difference. First operand has 234 places, 145 transitions, 1203 flow. Second operand 11 states and 115 transitions. [2024-06-14 14:05:10,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 163 transitions, 1607 flow [2024-06-14 14:05:10,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 163 transitions, 1541 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:05:10,145 INFO L231 Difference]: Finished difference. Result has 232 places, 140 transitions, 1150 flow [2024-06-14 14:05:10,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1150, PETRI_PLACES=232, PETRI_TRANSITIONS=140} [2024-06-14 14:05:10,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-14 14:05:10,145 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 140 transitions, 1150 flow [2024-06-14 14:05:10,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:05:10,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:05:10,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:05:10,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 14:05:10,146 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:05:10,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:05:10,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1755509008, now seen corresponding path program 5 times [2024-06-14 14:05:10,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:05:10,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057469853] [2024-06-14 14:05:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:05:10,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:05:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:05:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:05:15,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:05:15,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057469853] [2024-06-14 14:05:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057469853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:05:15,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:05:15,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:05:15,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434195800] [2024-06-14 14:05:15,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:05:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:05:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:05:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:05:15,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:05:15,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:05:15,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 140 transitions, 1150 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:05:15,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:05:15,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:05:15,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:05:16,246 INFO L124 PetriNetUnfolderBase]: 386/790 cut-off events. [2024-06-14 14:05:16,247 INFO L125 PetriNetUnfolderBase]: For 66868/66868 co-relation queries the response was YES. [2024-06-14 14:05:16,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4075 conditions, 790 events. 386/790 cut-off events. For 66868/66868 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4054 event pairs, 79 based on Foata normal form. 6/796 useless extension candidates. Maximal degree in co-relation 3971. Up to 624 conditions per place. [2024-06-14 14:05:16,253 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 18 changer transitions 26/158 dead transitions. [2024-06-14 14:05:16,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 158 transitions, 1510 flow [2024-06-14 14:05:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:05:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:05:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 14:05:16,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 14:05:16,254 INFO L175 Difference]: Start difference. First operand has 232 places, 140 transitions, 1150 flow. Second operand 11 states and 112 transitions. [2024-06-14 14:05:16,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 158 transitions, 1510 flow [2024-06-14 14:05:16,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 158 transitions, 1420 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-14 14:05:16,413 INFO L231 Difference]: Finished difference. Result has 224 places, 126 transitions, 986 flow [2024-06-14 14:05:16,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=986, PETRI_PLACES=224, PETRI_TRANSITIONS=126} [2024-06-14 14:05:16,414 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-14 14:05:16,414 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 126 transitions, 986 flow [2024-06-14 14:05:16,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:05:16,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:05:16,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:05:16,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 14:05:16,414 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:05:16,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:05:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1071377016, now seen corresponding path program 6 times [2024-06-14 14:05:16,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:05:16,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205863540] [2024-06-14 14:05:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:05:16,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:05:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:05:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:05:22,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:05:22,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205863540] [2024-06-14 14:05:22,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205863540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:05:22,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:05:22,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:05:22,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556288052] [2024-06-14 14:05:22,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:05:22,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:05:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:05:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:05:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:05:22,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:05:22,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 126 transitions, 986 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:05:22,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:05:22,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:05:22,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:05:23,096 INFO L124 PetriNetUnfolderBase]: 325/660 cut-off events. [2024-06-14 14:05:23,097 INFO L125 PetriNetUnfolderBase]: For 64907/64907 co-relation queries the response was YES. [2024-06-14 14:05:23,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3432 conditions, 660 events. 325/660 cut-off events. For 64907/64907 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3240 event pairs, 67 based on Foata normal form. 6/666 useless extension candidates. Maximal degree in co-relation 3331. Up to 549 conditions per place. [2024-06-14 14:05:23,103 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 14 changer transitions 19/143 dead transitions. [2024-06-14 14:05:23,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 143 transitions, 1308 flow [2024-06-14 14:05:23,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:05:23,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:05:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 14:05:23,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-14 14:05:23,104 INFO L175 Difference]: Start difference. First operand has 224 places, 126 transitions, 986 flow. Second operand 11 states and 106 transitions. [2024-06-14 14:05:23,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 143 transitions, 1308 flow [2024-06-14 14:05:23,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 143 transitions, 1196 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-06-14 14:05:23,259 INFO L231 Difference]: Finished difference. Result has 210 places, 119 transitions, 855 flow [2024-06-14 14:05:23,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=855, PETRI_PLACES=210, PETRI_TRANSITIONS=119} [2024-06-14 14:05:23,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-14 14:05:23,259 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 119 transitions, 855 flow [2024-06-14 14:05:23,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:05:23,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:05:23,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:05:23,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 14:05:23,260 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:05:23,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:05:23,260 INFO L85 PathProgramCache]: Analyzing trace with hash 110468386, now seen corresponding path program 7 times [2024-06-14 14:05:23,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:05:23,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438270986] [2024-06-14 14:05:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:05:23,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:05:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:05:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:05:29,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:05:29,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438270986] [2024-06-14 14:05:29,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438270986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:05:29,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:05:29,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 14:05:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030021518] [2024-06-14 14:05:29,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:05:29,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 14:05:29,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:05:29,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 14:05:29,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 14:05:30,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 14:05:30,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 119 transitions, 855 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:05:30,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:05:30,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 14:05:30,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:05:30,400 INFO L124 PetriNetUnfolderBase]: 301/616 cut-off events. [2024-06-14 14:05:30,401 INFO L125 PetriNetUnfolderBase]: For 58354/58354 co-relation queries the response was YES. [2024-06-14 14:05:30,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 616 events. 301/616 cut-off events. For 58354/58354 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2955 event pairs, 59 based on Foata normal form. 6/622 useless extension candidates. Maximal degree in co-relation 3043. Up to 508 conditions per place. [2024-06-14 14:05:30,404 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 16 changer transitions 15/136 dead transitions. [2024-06-14 14:05:30,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 136 transitions, 1165 flow [2024-06-14 14:05:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:05:30,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:05:30,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 14:05:30,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-14 14:05:30,405 INFO L175 Difference]: Start difference. First operand has 210 places, 119 transitions, 855 flow. Second operand 11 states and 106 transitions. [2024-06-14 14:05:30,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 136 transitions, 1165 flow [2024-06-14 14:05:30,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 136 transitions, 1127 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 14:05:30,490 INFO L231 Difference]: Finished difference. Result has 201 places, 114 transitions, 820 flow [2024-06-14 14:05:30,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=820, PETRI_PLACES=201, PETRI_TRANSITIONS=114} [2024-06-14 14:05:30,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-14 14:05:30,490 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 114 transitions, 820 flow [2024-06-14 14:05:30,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:05:30,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:05:30,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:05:30,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 14:05:30,491 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:05:30,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:05:30,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1401298144, now seen corresponding path program 8 times [2024-06-14 14:05:30,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:05:30,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223939997] [2024-06-14 14:05:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:05:30,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:05:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15