./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:18:01,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:18:01,703 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:18:01,715 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:18:01,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:18:01,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:18:01,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:18:01,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:18:01,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:18:01,745 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:18:01,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:18:01,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:18:01,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:18:01,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:18:01,748 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:18:01,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:18:01,748 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:18:01,748 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:18:01,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:18:01,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:18:01,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:18:01,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:18:01,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:18:01,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:18:01,750 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:18:01,750 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:18:01,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:18:01,750 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:18:01,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:18:01,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:18:01,752 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:18:01,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:18:01,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:18:01,753 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:18:01,753 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:18:01,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:18:01,753 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:18:01,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:18:01,754 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:18:01,754 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:18:01,754 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:18:01,754 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:18:01,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:18:01,755 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:18:01,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:18:01,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:18:01,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:18:01,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:18:01,983 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:18:01,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i [2024-06-27 22:18:02,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:18:03,150 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:18:03,151 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.oepc.i [2024-06-27 22:18:03,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2ca4d014/4fee31f24db24435a0acfbfd440df0d1/FLAG619af11ff [2024-06-27 22:18:03,179 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2ca4d014/4fee31f24db24435a0acfbfd440df0d1 [2024-06-27 22:18:03,181 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:18:03,181 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:18:03,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.oepc.yml/witness.yml [2024-06-27 22:18:03,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:18:03,238 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:18:03,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:18:03,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:18:03,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:18:03,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:18:03" (1/2) ... [2024-06-27 22:18:03,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7bad8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:03, skipping insertion in model container [2024-06-27 22:18:03,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:18:03" (1/2) ... [2024-06-27 22:18:03,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35340c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:03, skipping insertion in model container [2024-06-27 22:18:03,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:18:03" (2/2) ... [2024-06-27 22:18:03,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7bad8f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03, skipping insertion in model container [2024-06-27 22:18:03,247 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:18:03" (2/2) ... [2024-06-27 22:18:03,247 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:18:03,269 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:18:03,271 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-27 22:18:03,271 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-27 22:18:03,271 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:18:03,272 INFO L106 edCorrectnessWitness]: ghost_update [L828-L828] multithreaded = 1; [2024-06-27 22:18:03,314 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:18:03,447 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.oepc.i[945,958] [2024-06-27 22:18:03,613 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:18:03,620 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:18:03,647 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:18:03,738 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:18:03,770 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:18:03,770 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03 WrapperNode [2024-06-27 22:18:03,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:18:03,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:18:03,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:18:03,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:18:03,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,829 INFO L138 Inliner]: procedures = 174, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 119 [2024-06-27 22:18:03,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:18:03,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:18:03,830 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:18:03,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:18:03,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,867 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:18:03,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:18:03,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:18:03,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:18:03,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:18:03,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (1/1) ... [2024-06-27 22:18:03,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:18:03,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:18:03,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:18:04,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:18:04,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:18:04,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:18:04,043 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:18:04,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:18:04,043 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:18:04,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:18:04,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:18:04,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:18:04,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:18:04,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:18:04,045 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:18:04,161 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:18:04,163 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:18:04,474 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:18:04,474 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:18:04,652 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:18:04,652 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:18:04,652 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:18:04 BoogieIcfgContainer [2024-06-27 22:18:04,653 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:18:04,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:18:04,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:18:04,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:18:04,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:18:03" (1/4) ... [2024-06-27 22:18:04,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d6cfb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:18:04, skipping insertion in model container [2024-06-27 22:18:04,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:18:03" (2/4) ... [2024-06-27 22:18:04,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d6cfb2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:18:04, skipping insertion in model container [2024-06-27 22:18:04,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:03" (3/4) ... [2024-06-27 22:18:04,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d6cfb2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:18:04, skipping insertion in model container [2024-06-27 22:18:04,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:18:04" (4/4) ... [2024-06-27 22:18:04,659 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.oepc.i [2024-06-27 22:18:04,671 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:18:04,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:18:04,672 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:18:04,722 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:18:04,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 86 flow [2024-06-27 22:18:04,776 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-06-27 22:18:04,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:18:04,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-06-27 22:18:04,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 86 flow [2024-06-27 22:18:04,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 37 transitions, 80 flow [2024-06-27 22:18:04,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:18:04,799 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;@5fa416c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:18:04,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:18:04,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:18:04,804 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:18:04,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:18:04,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:04,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:18:04,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:04,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:04,809 INFO L85 PathProgramCache]: Analyzing trace with hash 324424917, now seen corresponding path program 1 times [2024-06-27 22:18:04,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:04,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778831546] [2024-06-27 22:18:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:04,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:06,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778831546] [2024-06-27 22:18:06,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778831546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:06,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:06,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:18:06,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871859612] [2024-06-27 22:18:06,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:06,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:18:06,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:18:06,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:18:06,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-06-27 22:18:06,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-06-27 22:18:06,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:06,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-06-27 22:18:06,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:06,348 INFO L124 PetriNetUnfolderBase]: 544/954 cut-off events. [2024-06-27 22:18:06,348 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 22:18:06,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 954 events. 544/954 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4998 event pairs, 252 based on Foata normal form. 49/940 useless extension candidates. Maximal degree in co-relation 1864. Up to 894 conditions per place. [2024-06-27 22:18:06,356 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 31 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-06-27 22:18:06,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 169 flow [2024-06-27 22:18:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:18:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:18:06,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-27 22:18:06,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-06-27 22:18:06,367 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 80 flow. Second operand 3 states and 81 transitions. [2024-06-27 22:18:06,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 169 flow [2024-06-27 22:18:06,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:18:06,373 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 99 flow [2024-06-27 22:18:06,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2024-06-27 22:18:06,377 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-27 22:18:06,378 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 99 flow [2024-06-27 22:18:06,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-06-27 22:18:06,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:06,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:06,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:18:06,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:06,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:06,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1760222765, now seen corresponding path program 1 times [2024-06-27 22:18:06,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:06,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039021417] [2024-06-27 22:18:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:06,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:07,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:07,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039021417] [2024-06-27 22:18:07,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039021417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:07,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:07,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:18:07,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360109687] [2024-06-27 22:18:07,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:07,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:18:07,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:07,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:18:07,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:18:07,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-06-27 22:18:07,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:07,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:07,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-06-27 22:18:07,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:07,542 INFO L124 PetriNetUnfolderBase]: 546/1066 cut-off events. [2024-06-27 22:18:07,543 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-06-27 22:18:07,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 1066 events. 546/1066 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6133 event pairs, 381 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 2180. Up to 886 conditions per place. [2024-06-27 22:18:07,548 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 37 selfloop transitions, 6 changer transitions 1/56 dead transitions. [2024-06-27 22:18:07,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 235 flow [2024-06-27 22:18:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:18:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:18:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-27 22:18:07,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-06-27 22:18:07,552 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 99 flow. Second operand 4 states and 100 transitions. [2024-06-27 22:18:07,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 235 flow [2024-06-27 22:18:07,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:18:07,555 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 145 flow [2024-06-27 22:18:07,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-06-27 22:18:07,556 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-06-27 22:18:07,556 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 145 flow [2024-06-27 22:18:07,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:07,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:07,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:07,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:18:07,558 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:07,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:07,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1267670618, now seen corresponding path program 1 times [2024-06-27 22:18:07,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:07,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505420364] [2024-06-27 22:18:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:07,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:08,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:08,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505420364] [2024-06-27 22:18:08,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505420364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:08,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:08,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:18:08,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161542705] [2024-06-27 22:18:08,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:08,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:18:08,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:18:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:18:08,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 22:18:08,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2024-06-27 22:18:08,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:08,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 22:18:08,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:08,733 INFO L124 PetriNetUnfolderBase]: 636/1212 cut-off events. [2024-06-27 22:18:08,734 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-06-27 22:18:08,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 1212 events. 636/1212 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6938 event pairs, 323 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 2723. Up to 1013 conditions per place. [2024-06-27 22:18:08,739 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 45 selfloop transitions, 8 changer transitions 2/66 dead transitions. [2024-06-27 22:18:08,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 66 transitions, 315 flow [2024-06-27 22:18:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:18:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:18:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 22:18:08,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-27 22:18:08,740 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 145 flow. Second operand 5 states and 120 transitions. [2024-06-27 22:18:08,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 66 transitions, 315 flow [2024-06-27 22:18:08,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 308 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:18:08,742 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 173 flow [2024-06-27 22:18:08,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-27 22:18:08,743 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-27 22:18:08,743 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 173 flow [2024-06-27 22:18:08,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2024-06-27 22:18:08,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:08,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:08,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:18:08,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:08,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash 643085010, now seen corresponding path program 1 times [2024-06-27 22:18:08,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:08,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593392765] [2024-06-27 22:18:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:09,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:09,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593392765] [2024-06-27 22:18:09,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593392765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:09,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:09,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:09,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936011658] [2024-06-27 22:18:09,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:09,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:09,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:09,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:09,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:09,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 22:18:09,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:09,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:09,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 22:18:09,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:09,868 INFO L124 PetriNetUnfolderBase]: 638/1221 cut-off events. [2024-06-27 22:18:09,868 INFO L125 PetriNetUnfolderBase]: For 743/743 co-relation queries the response was YES. [2024-06-27 22:18:09,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 1221 events. 638/1221 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7012 event pairs, 276 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 2900. Up to 999 conditions per place. [2024-06-27 22:18:09,890 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 52 selfloop transitions, 10 changer transitions 3/76 dead transitions. [2024-06-27 22:18:09,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 385 flow [2024-06-27 22:18:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:18:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:18:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 22:18:09,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-27 22:18:09,893 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 173 flow. Second operand 6 states and 143 transitions. [2024-06-27 22:18:09,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 385 flow [2024-06-27 22:18:09,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 368 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:18:09,898 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 197 flow [2024-06-27 22:18:09,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 22:18:09,900 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-06-27 22:18:09,900 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 197 flow [2024-06-27 22:18:09,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:09,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:09,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:09,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:18:09,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:09,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:09,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1768708118, now seen corresponding path program 1 times [2024-06-27 22:18:09,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:09,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680503959] [2024-06-27 22:18:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:09,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:09,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:09,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680503959] [2024-06-27 22:18:09,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680503959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:09,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:09,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:18:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318743300] [2024-06-27 22:18:09,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:09,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:18:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:18:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:18:09,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-06-27 22:18:09,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:09,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:09,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-06-27 22:18:09,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:10,076 INFO L124 PetriNetUnfolderBase]: 226/591 cut-off events. [2024-06-27 22:18:10,076 INFO L125 PetriNetUnfolderBase]: For 283/286 co-relation queries the response was YES. [2024-06-27 22:18:10,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 591 events. 226/591 cut-off events. For 283/286 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3674 event pairs, 92 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 1279. Up to 331 conditions per place. [2024-06-27 22:18:10,079 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 27 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-06-27 22:18:10,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 281 flow [2024-06-27 22:18:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:18:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:18:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-27 22:18:10,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-06-27 22:18:10,081 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 197 flow. Second operand 3 states and 91 transitions. [2024-06-27 22:18:10,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 281 flow [2024-06-27 22:18:10,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 258 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:10,083 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 178 flow [2024-06-27 22:18:10,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-27 22:18:10,083 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-27 22:18:10,084 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 178 flow [2024-06-27 22:18:10,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:10,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:10,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:10,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:18:10,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:10,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:10,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1768707646, now seen corresponding path program 1 times [2024-06-27 22:18:10,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:10,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451778365] [2024-06-27 22:18:10,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:10,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:11,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:11,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451778365] [2024-06-27 22:18:11,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451778365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:11,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:11,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:18:11,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777030696] [2024-06-27 22:18:11,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:11,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:18:11,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:11,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:18:11,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:18:11,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:11,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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) [2024-06-27 22:18:11,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:11,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:11,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:11,711 INFO L124 PetriNetUnfolderBase]: 700/1374 cut-off events. [2024-06-27 22:18:11,711 INFO L125 PetriNetUnfolderBase]: For 1184/1187 co-relation queries the response was YES. [2024-06-27 22:18:11,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3304 conditions, 1374 events. 700/1374 cut-off events. For 1184/1187 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7874 event pairs, 343 based on Foata normal form. 4/1329 useless extension candidates. Maximal degree in co-relation 3285. Up to 1139 conditions per place. [2024-06-27 22:18:11,718 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 43 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2024-06-27 22:18:11,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 334 flow [2024-06-27 22:18:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:18:11,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:18:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-27 22:18:11,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2024-06-27 22:18:11,720 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 178 flow. Second operand 5 states and 102 transitions. [2024-06-27 22:18:11,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 334 flow [2024-06-27 22:18:11,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:18:11,722 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 221 flow [2024-06-27 22:18:11,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-06-27 22:18:11,723 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-06-27 22:18:11,723 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 221 flow [2024-06-27 22:18:11,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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) [2024-06-27 22:18:11,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:11,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:11,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:18:11,724 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:11,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash -470546479, now seen corresponding path program 1 times [2024-06-27 22:18:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:11,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020026182] [2024-06-27 22:18:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:13,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:13,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020026182] [2024-06-27 22:18:13,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020026182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:13,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:13,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:13,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159622232] [2024-06-27 22:18:13,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:13,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:13,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:13,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:13,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:13,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:18:13,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 221 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:13,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:13,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:18:13,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:13,452 INFO L124 PetriNetUnfolderBase]: 652/1225 cut-off events. [2024-06-27 22:18:13,452 INFO L125 PetriNetUnfolderBase]: For 1361/1361 co-relation queries the response was YES. [2024-06-27 22:18:13,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 1225 events. 652/1225 cut-off events. For 1361/1361 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6757 event pairs, 257 based on Foata normal form. 2/1191 useless extension candidates. Maximal degree in co-relation 3164. Up to 962 conditions per place. [2024-06-27 22:18:13,458 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 67 selfloop transitions, 23 changer transitions 7/107 dead transitions. [2024-06-27 22:18:13,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 107 transitions, 609 flow [2024-06-27 22:18:13,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:13,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 22:18:13,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2024-06-27 22:18:13,460 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 221 flow. Second operand 8 states and 183 transitions. [2024-06-27 22:18:13,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 107 transitions, 609 flow [2024-06-27 22:18:13,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 107 transitions, 595 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:18:13,464 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 364 flow [2024-06-27 22:18:13,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-06-27 22:18:13,465 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-06-27 22:18:13,465 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 364 flow [2024-06-27 22:18:13,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:13,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:13,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:13,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:18:13,466 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:13,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1026807259, now seen corresponding path program 1 times [2024-06-27 22:18:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427465335] [2024-06-27 22:18:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:13,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:14,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:14,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427465335] [2024-06-27 22:18:14,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427465335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:14,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:14,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:14,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354049881] [2024-06-27 22:18:14,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:14,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:14,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:14,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:14,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:14,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 22:18:14,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:14,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:14,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:15,411 INFO L124 PetriNetUnfolderBase]: 687/1308 cut-off events. [2024-06-27 22:18:15,411 INFO L125 PetriNetUnfolderBase]: For 2186/2192 co-relation queries the response was YES. [2024-06-27 22:18:15,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1308 events. 687/1308 cut-off events. For 2186/2192 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7252 event pairs, 215 based on Foata normal form. 7/1277 useless extension candidates. Maximal degree in co-relation 3763. Up to 1114 conditions per place. [2024-06-27 22:18:15,419 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 56 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-06-27 22:18:15,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 546 flow [2024-06-27 22:18:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:18:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:18:15,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-27 22:18:15,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 22:18:15,420 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 364 flow. Second operand 6 states and 112 transitions. [2024-06-27 22:18:15,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 546 flow [2024-06-27 22:18:15,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 508 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 22:18:15,424 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 369 flow [2024-06-27 22:18:15,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=369, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-06-27 22:18:15,425 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-27 22:18:15,425 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 369 flow [2024-06-27 22:18:15,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 22:18:15,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:15,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:15,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:18:15,426 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:15,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:15,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1774805094, now seen corresponding path program 1 times [2024-06-27 22:18:15,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:15,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011479297] [2024-06-27 22:18:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:15,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:16,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:16,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:16,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011479297] [2024-06-27 22:18:16,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011479297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:16,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:16,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:16,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125909550] [2024-06-27 22:18:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:16,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:16,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:16,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:16,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:16,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 22:18:16,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:16,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:16,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:16,827 INFO L124 PetriNetUnfolderBase]: 703/1311 cut-off events. [2024-06-27 22:18:16,828 INFO L125 PetriNetUnfolderBase]: For 2752/2752 co-relation queries the response was YES. [2024-06-27 22:18:16,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4082 conditions, 1311 events. 703/1311 cut-off events. For 2752/2752 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7104 event pairs, 155 based on Foata normal form. 1/1277 useless extension candidates. Maximal degree in co-relation 4051. Up to 1102 conditions per place. [2024-06-27 22:18:16,835 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 64 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-06-27 22:18:16,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 637 flow [2024-06-27 22:18:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:18:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:18:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 22:18:16,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49145299145299143 [2024-06-27 22:18:16,837 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 369 flow. Second operand 6 states and 115 transitions. [2024-06-27 22:18:16,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 637 flow [2024-06-27 22:18:16,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 611 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:16,841 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 460 flow [2024-06-27 22:18:16,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=460, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-06-27 22:18:16,841 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-06-27 22:18:16,841 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 460 flow [2024-06-27 22:18:16,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 22:18:16,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:16,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:16,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:18:16,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:16,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:16,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1078553154, now seen corresponding path program 2 times [2024-06-27 22:18:16,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:16,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15415024] [2024-06-27 22:18:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:17,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:17,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15415024] [2024-06-27 22:18:17,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15415024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:17,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:17,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:17,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906016721] [2024-06-27 22:18:17,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:17,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:17,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:17,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 22:18:17,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:17,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:17,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:18,163 INFO L124 PetriNetUnfolderBase]: 708/1327 cut-off events. [2024-06-27 22:18:18,163 INFO L125 PetriNetUnfolderBase]: For 3570/3570 co-relation queries the response was YES. [2024-06-27 22:18:18,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4397 conditions, 1327 events. 708/1327 cut-off events. For 3570/3570 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7264 event pairs, 207 based on Foata normal form. 1/1296 useless extension candidates. Maximal degree in co-relation 4362. Up to 1134 conditions per place. [2024-06-27 22:18:18,170 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 63 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-06-27 22:18:18,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 658 flow [2024-06-27 22:18:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:18:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:18:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-27 22:18:18,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658 [2024-06-27 22:18:18,172 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 460 flow. Second operand 6 states and 109 transitions. [2024-06-27 22:18:18,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 658 flow [2024-06-27 22:18:18,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 645 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 22:18:18,177 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 507 flow [2024-06-27 22:18:18,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-06-27 22:18:18,178 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-27 22:18:18,178 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 507 flow [2024-06-27 22:18:18,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 22:18:18,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:18,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:18,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:18:18,181 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:18,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:18,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1702037352, now seen corresponding path program 1 times [2024-06-27 22:18:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:18,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783557294] [2024-06-27 22:18:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:18,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:19,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783557294] [2024-06-27 22:18:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783557294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:19,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:19,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:18:19,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212253784] [2024-06-27 22:18:19,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:19,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:18:19,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:19,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:18:19,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:18:19,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:18:19,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 507 flow. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:19,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:19,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:18:19,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:19,981 INFO L124 PetriNetUnfolderBase]: 602/1157 cut-off events. [2024-06-27 22:18:19,981 INFO L125 PetriNetUnfolderBase]: For 4013/4013 co-relation queries the response was YES. [2024-06-27 22:18:19,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 1157 events. 602/1157 cut-off events. For 4013/4013 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6340 event pairs, 96 based on Foata normal form. 4/1122 useless extension candidates. Maximal degree in co-relation 3964. Up to 871 conditions per place. [2024-06-27 22:18:19,987 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 92 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-06-27 22:18:19,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 121 transitions, 889 flow [2024-06-27 22:18:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-27 22:18:19,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2024-06-27 22:18:19,989 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 507 flow. Second operand 9 states and 192 transitions. [2024-06-27 22:18:19,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 121 transitions, 889 flow [2024-06-27 22:18:19,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 856 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:19,994 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 544 flow [2024-06-27 22:18:19,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=544, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2024-06-27 22:18:19,995 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-27 22:18:19,995 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 544 flow [2024-06-27 22:18:19,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:19,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:19,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:19,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:18:19,995 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:19,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1517358686, now seen corresponding path program 3 times [2024-06-27 22:18:19,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:19,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419130557] [2024-06-27 22:18:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:19,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:21,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419130557] [2024-06-27 22:18:21,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419130557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:21,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:21,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:21,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138842560] [2024-06-27 22:18:21,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:21,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:21,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:21,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:21,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:21,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:21,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 544 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2024-06-27 22:18:21,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:21,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:21,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:21,645 INFO L124 PetriNetUnfolderBase]: 682/1347 cut-off events. [2024-06-27 22:18:21,648 INFO L125 PetriNetUnfolderBase]: For 4894/4902 co-relation queries the response was YES. [2024-06-27 22:18:21,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4655 conditions, 1347 events. 682/1347 cut-off events. For 4894/4902 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7705 event pairs, 198 based on Foata normal form. 9/1315 useless extension candidates. Maximal degree in co-relation 4616. Up to 1061 conditions per place. [2024-06-27 22:18:21,657 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 72 selfloop transitions, 32 changer transitions 0/116 dead transitions. [2024-06-27 22:18:21,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 977 flow [2024-06-27 22:18:21,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:18:21,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:18:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-27 22:18:21,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341880341880342 [2024-06-27 22:18:21,660 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 544 flow. Second operand 6 states and 125 transitions. [2024-06-27 22:18:21,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 977 flow [2024-06-27 22:18:21,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 116 transitions, 924 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:18:21,666 INFO L231 Difference]: Finished difference. Result has 88 places, 99 transitions, 787 flow [2024-06-27 22:18:21,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=787, PETRI_PLACES=88, PETRI_TRANSITIONS=99} [2024-06-27 22:18:21,667 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 45 predicate places. [2024-06-27 22:18:21,667 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 99 transitions, 787 flow [2024-06-27 22:18:21,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2024-06-27 22:18:21,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:21,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:21,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:18:21,668 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:21,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:21,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1078974723, now seen corresponding path program 1 times [2024-06-27 22:18:21,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:21,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276692846] [2024-06-27 22:18:21,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:21,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:23,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:23,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276692846] [2024-06-27 22:18:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276692846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:23,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:23,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:23,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129545893] [2024-06-27 22:18:23,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:23,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:23,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:23,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:23,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 99 transitions, 787 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:23,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:23,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:23,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:23,860 INFO L124 PetriNetUnfolderBase]: 733/1372 cut-off events. [2024-06-27 22:18:23,861 INFO L125 PetriNetUnfolderBase]: For 5814/5822 co-relation queries the response was YES. [2024-06-27 22:18:23,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5087 conditions, 1372 events. 733/1372 cut-off events. For 5814/5822 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7516 event pairs, 201 based on Foata normal form. 11/1348 useless extension candidates. Maximal degree in co-relation 5045. Up to 1151 conditions per place. [2024-06-27 22:18:23,873 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 97 selfloop transitions, 16 changer transitions 0/123 dead transitions. [2024-06-27 22:18:23,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 1093 flow [2024-06-27 22:18:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 22:18:23,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 22:18:23,875 INFO L175 Difference]: Start difference. First operand has 88 places, 99 transitions, 787 flow. Second operand 7 states and 130 transitions. [2024-06-27 22:18:23,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 1093 flow [2024-06-27 22:18:23,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 123 transitions, 1064 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 22:18:23,883 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 809 flow [2024-06-27 22:18:23,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=809, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2024-06-27 22:18:23,884 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-06-27 22:18:23,884 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 809 flow [2024-06-27 22:18:23,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:23,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:23,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:23,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:18:23,885 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:23,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash 815438029, now seen corresponding path program 1 times [2024-06-27 22:18:23,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:23,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306294865] [2024-06-27 22:18:23,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:23,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:24,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:24,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306294865] [2024-06-27 22:18:24,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306294865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:24,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:24,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:24,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40724335] [2024-06-27 22:18:24,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:24,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:24,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:24,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:25,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:25,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 809 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:25,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:25,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:25,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:25,369 INFO L124 PetriNetUnfolderBase]: 751/1407 cut-off events. [2024-06-27 22:18:25,369 INFO L125 PetriNetUnfolderBase]: For 6538/6540 co-relation queries the response was YES. [2024-06-27 22:18:25,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5449 conditions, 1407 events. 751/1407 cut-off events. For 6538/6540 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7734 event pairs, 160 based on Foata normal form. 3/1372 useless extension candidates. Maximal degree in co-relation 5404. Up to 1117 conditions per place. [2024-06-27 22:18:25,377 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 89 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-06-27 22:18:25,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 130 transitions, 1203 flow [2024-06-27 22:18:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 22:18:25,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:18:25,379 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 809 flow. Second operand 7 states and 133 transitions. [2024-06-27 22:18:25,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 130 transitions, 1203 flow [2024-06-27 22:18:25,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 130 transitions, 1164 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:18:25,387 INFO L231 Difference]: Finished difference. Result has 97 places, 107 transitions, 907 flow [2024-06-27 22:18:25,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=907, PETRI_PLACES=97, PETRI_TRANSITIONS=107} [2024-06-27 22:18:25,388 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-27 22:18:25,388 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 107 transitions, 907 flow [2024-06-27 22:18:25,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:25,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:25,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:25,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:18:25,389 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:25,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash 815617519, now seen corresponding path program 2 times [2024-06-27 22:18:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662401317] [2024-06-27 22:18:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:26,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662401317] [2024-06-27 22:18:26,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662401317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:26,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:26,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:26,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616764400] [2024-06-27 22:18:26,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:26,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:26,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:26,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:26,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:26,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:26,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 107 transitions, 907 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:26,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:26,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:26,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:26,829 INFO L124 PetriNetUnfolderBase]: 762/1424 cut-off events. [2024-06-27 22:18:26,829 INFO L125 PetriNetUnfolderBase]: For 7549/7551 co-relation queries the response was YES. [2024-06-27 22:18:26,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5720 conditions, 1424 events. 762/1424 cut-off events. For 7549/7551 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7818 event pairs, 157 based on Foata normal form. 3/1389 useless extension candidates. Maximal degree in co-relation 5674. Up to 1129 conditions per place. [2024-06-27 22:18:26,837 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 97 selfloop transitions, 30 changer transitions 0/136 dead transitions. [2024-06-27 22:18:26,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 136 transitions, 1319 flow [2024-06-27 22:18:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:26,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 22:18:26,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:18:26,839 INFO L175 Difference]: Start difference. First operand has 97 places, 107 transitions, 907 flow. Second operand 7 states and 133 transitions. [2024-06-27 22:18:26,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 136 transitions, 1319 flow [2024-06-27 22:18:26,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 1275 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:18:26,849 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 951 flow [2024-06-27 22:18:26,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=951, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2024-06-27 22:18:26,850 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-06-27 22:18:26,850 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 951 flow [2024-06-27 22:18:26,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:26,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:26,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:26,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:18:26,851 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:26,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash 749421911, now seen corresponding path program 1 times [2024-06-27 22:18:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:26,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100878960] [2024-06-27 22:18:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:26,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:27,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:27,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100878960] [2024-06-27 22:18:27,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100878960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:27,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:27,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:27,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561692804] [2024-06-27 22:18:27,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:27,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:27,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:27,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:27,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:27,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:27,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 951 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:27,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:27,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:27,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:28,315 INFO L124 PetriNetUnfolderBase]: 803/1522 cut-off events. [2024-06-27 22:18:28,315 INFO L125 PetriNetUnfolderBase]: For 8341/8384 co-relation queries the response was YES. [2024-06-27 22:18:28,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6023 conditions, 1522 events. 803/1522 cut-off events. For 8341/8384 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8612 event pairs, 220 based on Foata normal form. 38/1515 useless extension candidates. Maximal degree in co-relation 5975. Up to 1227 conditions per place. [2024-06-27 22:18:28,325 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 89 selfloop transitions, 36 changer transitions 0/139 dead transitions. [2024-06-27 22:18:28,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 1384 flow [2024-06-27 22:18:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 22:18:28,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 22:18:28,326 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 951 flow. Second operand 7 states and 130 transitions. [2024-06-27 22:18:28,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 1384 flow [2024-06-27 22:18:28,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 139 transitions, 1332 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:28,338 INFO L231 Difference]: Finished difference. Result has 107 places, 123 transitions, 1141 flow [2024-06-27 22:18:28,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1141, PETRI_PLACES=107, PETRI_TRANSITIONS=123} [2024-06-27 22:18:28,339 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2024-06-27 22:18:28,339 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 123 transitions, 1141 flow [2024-06-27 22:18:28,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:28,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:28,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:28,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:18:28,339 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:28,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash 911185477, now seen corresponding path program 2 times [2024-06-27 22:18:28,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:28,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505369248] [2024-06-27 22:18:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:28,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:29,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:29,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505369248] [2024-06-27 22:18:29,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505369248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:29,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:29,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:29,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522980158] [2024-06-27 22:18:29,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:29,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:29,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:29,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:29,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:29,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:29,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 123 transitions, 1141 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:29,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:29,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:29,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:29,879 INFO L124 PetriNetUnfolderBase]: 817/1551 cut-off events. [2024-06-27 22:18:29,879 INFO L125 PetriNetUnfolderBase]: For 9750/9793 co-relation queries the response was YES. [2024-06-27 22:18:29,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6434 conditions, 1551 events. 817/1551 cut-off events. For 9750/9793 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8836 event pairs, 215 based on Foata normal form. 38/1542 useless extension candidates. Maximal degree in co-relation 6381. Up to 1269 conditions per place. [2024-06-27 22:18:29,890 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 108 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-27 22:18:29,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 148 transitions, 1558 flow [2024-06-27 22:18:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:18:29,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-27 22:18:29,892 INFO L175 Difference]: Start difference. First operand has 107 places, 123 transitions, 1141 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:18:29,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 148 transitions, 1558 flow [2024-06-27 22:18:29,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 148 transitions, 1523 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 22:18:29,911 INFO L231 Difference]: Finished difference. Result has 114 places, 129 transitions, 1231 flow [2024-06-27 22:18:29,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1231, PETRI_PLACES=114, PETRI_TRANSITIONS=129} [2024-06-27 22:18:29,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-06-27 22:18:29,912 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 129 transitions, 1231 flow [2024-06-27 22:18:29,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:29,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:29,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:29,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:18:29,912 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:29,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1080717987, now seen corresponding path program 3 times [2024-06-27 22:18:29,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:29,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076138213] [2024-06-27 22:18:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:29,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:30,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076138213] [2024-06-27 22:18:30,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076138213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:30,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:30,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:30,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289020355] [2024-06-27 22:18:30,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:30,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:30,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:30,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 129 transitions, 1231 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:30,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:30,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:30,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:31,378 INFO L124 PetriNetUnfolderBase]: 815/1548 cut-off events. [2024-06-27 22:18:31,379 INFO L125 PetriNetUnfolderBase]: For 10922/10965 co-relation queries the response was YES. [2024-06-27 22:18:31,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6599 conditions, 1548 events. 815/1548 cut-off events. For 10922/10965 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8800 event pairs, 215 based on Foata normal form. 38/1539 useless extension candidates. Maximal degree in co-relation 6543. Up to 1293 conditions per place. [2024-06-27 22:18:31,388 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 114 selfloop transitions, 16 changer transitions 0/144 dead transitions. [2024-06-27 22:18:31,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 144 transitions, 1538 flow [2024-06-27 22:18:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:31,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 22:18:31,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542124542124542 [2024-06-27 22:18:31,390 INFO L175 Difference]: Start difference. First operand has 114 places, 129 transitions, 1231 flow. Second operand 7 states and 124 transitions. [2024-06-27 22:18:31,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 144 transitions, 1538 flow [2024-06-27 22:18:31,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 144 transitions, 1475 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:31,408 INFO L231 Difference]: Finished difference. Result has 117 places, 130 transitions, 1217 flow [2024-06-27 22:18:31,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1217, PETRI_PLACES=117, PETRI_TRANSITIONS=130} [2024-06-27 22:18:31,409 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-27 22:18:31,409 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 130 transitions, 1217 flow [2024-06-27 22:18:31,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:31,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:31,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:31,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:18:31,410 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:31,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:31,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1080392239, now seen corresponding path program 3 times [2024-06-27 22:18:31,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:31,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381964254] [2024-06-27 22:18:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:31,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:32,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:32,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381964254] [2024-06-27 22:18:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381964254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:32,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275743075] [2024-06-27 22:18:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:32,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:32,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:32,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:32,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:32,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 130 transitions, 1217 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:32,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:32,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:32,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:32,893 INFO L124 PetriNetUnfolderBase]: 803/1541 cut-off events. [2024-06-27 22:18:32,893 INFO L125 PetriNetUnfolderBase]: For 11781/11781 co-relation queries the response was YES. [2024-06-27 22:18:32,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6642 conditions, 1541 events. 803/1541 cut-off events. For 11781/11781 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8824 event pairs, 206 based on Foata normal form. 1/1494 useless extension candidates. Maximal degree in co-relation 6585. Up to 1243 conditions per place. [2024-06-27 22:18:32,903 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 114 selfloop transitions, 18 changer transitions 0/147 dead transitions. [2024-06-27 22:18:32,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 147 transitions, 1537 flow [2024-06-27 22:18:32,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 22:18:32,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:18:32,913 INFO L175 Difference]: Start difference. First operand has 117 places, 130 transitions, 1217 flow. Second operand 7 states and 126 transitions. [2024-06-27 22:18:32,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 147 transitions, 1537 flow [2024-06-27 22:18:32,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 147 transitions, 1491 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:18:32,931 INFO L231 Difference]: Finished difference. Result has 119 places, 130 transitions, 1214 flow [2024-06-27 22:18:32,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1214, PETRI_PLACES=119, PETRI_TRANSITIONS=130} [2024-06-27 22:18:32,931 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2024-06-27 22:18:32,931 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 130 transitions, 1214 flow [2024-06-27 22:18:32,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:32,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:32,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:32,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:18:32,932 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:32,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:32,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1966979033, now seen corresponding path program 4 times [2024-06-27 22:18:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:32,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930872673] [2024-06-27 22:18:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:32,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:34,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:34,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930872673] [2024-06-27 22:18:34,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930872673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:34,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:34,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:34,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843676401] [2024-06-27 22:18:34,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:34,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:34,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:34,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:34,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:34,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:34,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 130 transitions, 1214 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:34,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:34,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:34,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:34,549 INFO L124 PetriNetUnfolderBase]: 846/1654 cut-off events. [2024-06-27 22:18:34,549 INFO L125 PetriNetUnfolderBase]: For 13110/13110 co-relation queries the response was YES. [2024-06-27 22:18:34,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 1654 events. 846/1654 cut-off events. For 13110/13110 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9640 event pairs, 199 based on Foata normal form. 1/1596 useless extension candidates. Maximal degree in co-relation 7011. Up to 1207 conditions per place. [2024-06-27 22:18:34,558 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 107 selfloop transitions, 63 changer transitions 0/185 dead transitions. [2024-06-27 22:18:34,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 185 transitions, 1950 flow [2024-06-27 22:18:34,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 22:18:34,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2024-06-27 22:18:34,560 INFO L175 Difference]: Start difference. First operand has 119 places, 130 transitions, 1214 flow. Second operand 7 states and 141 transitions. [2024-06-27 22:18:34,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 185 transitions, 1950 flow [2024-06-27 22:18:34,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 185 transitions, 1910 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:34,581 INFO L231 Difference]: Finished difference. Result has 124 places, 161 transitions, 1656 flow [2024-06-27 22:18:34,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1656, PETRI_PLACES=124, PETRI_TRANSITIONS=161} [2024-06-27 22:18:34,581 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-06-27 22:18:34,581 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 161 transitions, 1656 flow [2024-06-27 22:18:34,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:34,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:34,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:34,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:18:34,582 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:34,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:34,582 INFO L85 PathProgramCache]: Analyzing trace with hash -206699895, now seen corresponding path program 5 times [2024-06-27 22:18:34,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:34,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683269449] [2024-06-27 22:18:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:34,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:35,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:35,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683269449] [2024-06-27 22:18:35,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683269449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:35,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:35,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:35,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936842926] [2024-06-27 22:18:35,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:35,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:35,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:35,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:35,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:36,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:36,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 161 transitions, 1656 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:36,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:36,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:36,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:36,551 INFO L124 PetriNetUnfolderBase]: 882/1711 cut-off events. [2024-06-27 22:18:36,551 INFO L125 PetriNetUnfolderBase]: For 15589/15589 co-relation queries the response was YES. [2024-06-27 22:18:36,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7950 conditions, 1711 events. 882/1711 cut-off events. For 15589/15589 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9963 event pairs, 203 based on Foata normal form. 1/1653 useless extension candidates. Maximal degree in co-relation 7891. Up to 1247 conditions per place. [2024-06-27 22:18:36,562 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 108 selfloop transitions, 83 changer transitions 0/206 dead transitions. [2024-06-27 22:18:36,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 206 transitions, 2453 flow [2024-06-27 22:18:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:18:36,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-06-27 22:18:36,571 INFO L175 Difference]: Start difference. First operand has 124 places, 161 transitions, 1656 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:18:36,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 206 transitions, 2453 flow [2024-06-27 22:18:36,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 206 transitions, 2298 flow, removed 60 selfloop flow, removed 2 redundant places. [2024-06-27 22:18:36,600 INFO L231 Difference]: Finished difference. Result has 132 places, 185 transitions, 2037 flow [2024-06-27 22:18:36,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2037, PETRI_PLACES=132, PETRI_TRANSITIONS=185} [2024-06-27 22:18:36,601 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2024-06-27 22:18:36,601 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 185 transitions, 2037 flow [2024-06-27 22:18:36,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:36,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:36,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:36,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:18:36,602 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:36,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash -184349887, now seen corresponding path program 4 times [2024-06-27 22:18:36,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:36,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932032163] [2024-06-27 22:18:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:36,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:37,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932032163] [2024-06-27 22:18:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932032163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:37,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:37,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:37,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641616430] [2024-06-27 22:18:37,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:37,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:38,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:38,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 185 transitions, 2037 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:38,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:38,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:38,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:38,589 INFO L124 PetriNetUnfolderBase]: 890/1726 cut-off events. [2024-06-27 22:18:38,589 INFO L125 PetriNetUnfolderBase]: For 15803/15803 co-relation queries the response was YES. [2024-06-27 22:18:38,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8032 conditions, 1726 events. 890/1726 cut-off events. For 15803/15803 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10105 event pairs, 218 based on Foata normal form. 1/1668 useless extension candidates. Maximal degree in co-relation 7968. Up to 1305 conditions per place. [2024-06-27 22:18:38,600 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 123 selfloop transitions, 60 changer transitions 0/220 dead transitions. [2024-06-27 22:18:38,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 220 transitions, 2587 flow [2024-06-27 22:18:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:18:38,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-27 22:18:38,602 INFO L175 Difference]: Start difference. First operand has 132 places, 185 transitions, 2037 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:18:38,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 220 transitions, 2587 flow [2024-06-27 22:18:38,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 220 transitions, 2498 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:18:38,627 INFO L231 Difference]: Finished difference. Result has 138 places, 201 transitions, 2233 flow [2024-06-27 22:18:38,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2233, PETRI_PLACES=138, PETRI_TRANSITIONS=201} [2024-06-27 22:18:38,628 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-27 22:18:38,628 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 201 transitions, 2233 flow [2024-06-27 22:18:38,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:38,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:38,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:38,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:18:38,629 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:38,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash -185070885, now seen corresponding path program 6 times [2024-06-27 22:18:38,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:38,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611756635] [2024-06-27 22:18:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:38,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:39,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:39,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611756635] [2024-06-27 22:18:39,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611756635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:39,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:39,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:39,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641961754] [2024-06-27 22:18:39,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:39,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:39,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:40,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:40,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 201 transitions, 2233 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:40,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:40,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:40,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:40,666 INFO L124 PetriNetUnfolderBase]: 898/1734 cut-off events. [2024-06-27 22:18:40,666 INFO L125 PetriNetUnfolderBase]: For 18221/18221 co-relation queries the response was YES. [2024-06-27 22:18:40,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8506 conditions, 1734 events. 898/1734 cut-off events. For 18221/18221 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 10094 event pairs, 201 based on Foata normal form. 1/1675 useless extension candidates. Maximal degree in co-relation 8440. Up to 1265 conditions per place. [2024-06-27 22:18:40,677 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 119 selfloop transitions, 87 changer transitions 0/226 dead transitions. [2024-06-27 22:18:40,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 226 transitions, 2777 flow [2024-06-27 22:18:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:18:40,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-27 22:18:40,679 INFO L175 Difference]: Start difference. First operand has 138 places, 201 transitions, 2233 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:18:40,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 226 transitions, 2777 flow [2024-06-27 22:18:40,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 226 transitions, 2674 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:40,707 INFO L231 Difference]: Finished difference. Result has 142 places, 205 transitions, 2356 flow [2024-06-27 22:18:40,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2356, PETRI_PLACES=142, PETRI_TRANSITIONS=205} [2024-06-27 22:18:40,708 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-27 22:18:40,708 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 205 transitions, 2356 flow [2024-06-27 22:18:40,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-27 22:18:40,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:40,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:40,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:18:40,708 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:40,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash -491373991, now seen corresponding path program 1 times [2024-06-27 22:18:40,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:40,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597384172] [2024-06-27 22:18:40,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:40,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:41,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:41,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597384172] [2024-06-27 22:18:41,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597384172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:41,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:41,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:41,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687876449] [2024-06-27 22:18:41,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:41,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:41,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:41,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:41,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:41,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:41,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 205 transitions, 2356 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:41,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:41,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:41,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:42,326 INFO L124 PetriNetUnfolderBase]: 919/1702 cut-off events. [2024-06-27 22:18:42,326 INFO L125 PetriNetUnfolderBase]: For 20142/20142 co-relation queries the response was YES. [2024-06-27 22:18:42,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8781 conditions, 1702 events. 919/1702 cut-off events. For 20142/20142 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9578 event pairs, 178 based on Foata normal form. 1/1660 useless extension candidates. Maximal degree in co-relation 8714. Up to 1303 conditions per place. [2024-06-27 22:18:42,338 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 151 selfloop transitions, 67 changer transitions 0/238 dead transitions. [2024-06-27 22:18:42,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 238 transitions, 3041 flow [2024-06-27 22:18:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:18:42,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 22:18:42,340 INFO L175 Difference]: Start difference. First operand has 142 places, 205 transitions, 2356 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:18:42,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 238 transitions, 3041 flow [2024-06-27 22:18:42,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 238 transitions, 2897 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:18:42,370 INFO L231 Difference]: Finished difference. Result has 147 places, 218 transitions, 2554 flow [2024-06-27 22:18:42,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2554, PETRI_PLACES=147, PETRI_TRANSITIONS=218} [2024-06-27 22:18:42,371 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2024-06-27 22:18:42,371 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 218 transitions, 2554 flow [2024-06-27 22:18:42,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:42,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:42,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:42,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:18:42,372 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:42,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1751671716, now seen corresponding path program 1 times [2024-06-27 22:18:42,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:42,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194727914] [2024-06-27 22:18:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:42,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:43,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:43,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194727914] [2024-06-27 22:18:43,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194727914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:43,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:43,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968687708] [2024-06-27 22:18:43,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:43,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:43,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:43,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:43,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:43,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:18:43,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 218 transitions, 2554 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:43,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:43,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:18:43,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:44,045 INFO L124 PetriNetUnfolderBase]: 1006/1804 cut-off events. [2024-06-27 22:18:44,046 INFO L125 PetriNetUnfolderBase]: For 22669/22669 co-relation queries the response was YES. [2024-06-27 22:18:44,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9590 conditions, 1804 events. 1006/1804 cut-off events. For 22669/22669 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9961 event pairs, 197 based on Foata normal form. 1/1762 useless extension candidates. Maximal degree in co-relation 9520. Up to 1367 conditions per place. [2024-06-27 22:18:44,057 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 173 selfloop transitions, 71 changer transitions 0/251 dead transitions. [2024-06-27 22:18:44,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 251 transitions, 3288 flow [2024-06-27 22:18:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:18:44,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-27 22:18:44,060 INFO L175 Difference]: Start difference. First operand has 147 places, 218 transitions, 2554 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:18:44,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 251 transitions, 3288 flow [2024-06-27 22:18:44,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 251 transitions, 3235 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 22:18:44,097 INFO L231 Difference]: Finished difference. Result has 154 places, 224 transitions, 2757 flow [2024-06-27 22:18:44,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2757, PETRI_PLACES=154, PETRI_TRANSITIONS=224} [2024-06-27 22:18:44,097 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-27 22:18:44,097 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 224 transitions, 2757 flow [2024-06-27 22:18:44,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:44,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:44,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:44,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:18:44,098 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:44,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:44,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1751671499, now seen corresponding path program 2 times [2024-06-27 22:18:44,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:44,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809326505] [2024-06-27 22:18:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:44,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:45,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:45,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809326505] [2024-06-27 22:18:45,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809326505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:45,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:45,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:45,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868709930] [2024-06-27 22:18:45,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:45,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:45,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:45,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:45,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:45,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:45,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 224 transitions, 2757 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:45,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:45,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:45,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:45,768 INFO L124 PetriNetUnfolderBase]: 957/1763 cut-off events. [2024-06-27 22:18:45,768 INFO L125 PetriNetUnfolderBase]: For 25134/25134 co-relation queries the response was YES. [2024-06-27 22:18:45,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9776 conditions, 1763 events. 957/1763 cut-off events. For 25134/25134 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9986 event pairs, 181 based on Foata normal form. 1/1720 useless extension candidates. Maximal degree in co-relation 9703. Up to 1343 conditions per place. [2024-06-27 22:18:45,783 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 162 selfloop transitions, 65 changer transitions 0/250 dead transitions. [2024-06-27 22:18:45,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 250 transitions, 3400 flow [2024-06-27 22:18:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:45,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:18:45,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 22:18:45,784 INFO L175 Difference]: Start difference. First operand has 154 places, 224 transitions, 2757 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:18:45,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 250 transitions, 3400 flow [2024-06-27 22:18:45,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 250 transitions, 3359 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:18:45,826 INFO L231 Difference]: Finished difference. Result has 160 places, 230 transitions, 2946 flow [2024-06-27 22:18:45,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2946, PETRI_PLACES=160, PETRI_TRANSITIONS=230} [2024-06-27 22:18:45,826 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2024-06-27 22:18:45,826 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 230 transitions, 2946 flow [2024-06-27 22:18:45,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:45,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:45,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:45,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:18:45,827 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:45,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1757235689, now seen corresponding path program 3 times [2024-06-27 22:18:45,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:45,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138011305] [2024-06-27 22:18:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:45,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:47,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:47,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138011305] [2024-06-27 22:18:47,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138011305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:47,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:47,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:47,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304764724] [2024-06-27 22:18:47,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:47,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:47,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:47,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:47,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:47,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 230 transitions, 2946 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:47,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:47,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:47,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:47,459 INFO L124 PetriNetUnfolderBase]: 964/1775 cut-off events. [2024-06-27 22:18:47,459 INFO L125 PetriNetUnfolderBase]: For 26895/26895 co-relation queries the response was YES. [2024-06-27 22:18:47,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10083 conditions, 1775 events. 964/1775 cut-off events. For 26895/26895 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10045 event pairs, 182 based on Foata normal form. 1/1732 useless extension candidates. Maximal degree in co-relation 10007. Up to 1352 conditions per place. [2024-06-27 22:18:47,472 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 165 selfloop transitions, 69 changer transitions 0/257 dead transitions. [2024-06-27 22:18:47,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 257 transitions, 3635 flow [2024-06-27 22:18:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:18:47,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 22:18:47,474 INFO L175 Difference]: Start difference. First operand has 160 places, 230 transitions, 2946 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:18:47,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 257 transitions, 3635 flow [2024-06-27 22:18:47,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 257 transitions, 3541 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:47,527 INFO L231 Difference]: Finished difference. Result has 164 places, 236 transitions, 3073 flow [2024-06-27 22:18:47,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2858, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3073, PETRI_PLACES=164, PETRI_TRANSITIONS=236} [2024-06-27 22:18:47,528 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 121 predicate places. [2024-06-27 22:18:47,528 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 236 transitions, 3073 flow [2024-06-27 22:18:47,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:47,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:47,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:47,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:18:47,528 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:47,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1757243625, now seen corresponding path program 1 times [2024-06-27 22:18:47,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:47,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960840565] [2024-06-27 22:18:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:47,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:48,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:48,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960840565] [2024-06-27 22:18:48,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960840565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:48,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:48,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:48,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570126065] [2024-06-27 22:18:48,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:48,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:48,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:48,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:48,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:48,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:18:48,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 236 transitions, 3073 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:48,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:48,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:18:48,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:49,214 INFO L124 PetriNetUnfolderBase]: 1094/1964 cut-off events. [2024-06-27 22:18:49,214 INFO L125 PetriNetUnfolderBase]: For 31209/31209 co-relation queries the response was YES. [2024-06-27 22:18:49,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11163 conditions, 1964 events. 1094/1964 cut-off events. For 31209/31209 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11038 event pairs, 214 based on Foata normal form. 3/1918 useless extension candidates. Maximal degree in co-relation 11086. Up to 1555 conditions per place. [2024-06-27 22:18:49,228 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 217 selfloop transitions, 48 changer transitions 0/272 dead transitions. [2024-06-27 22:18:49,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 272 transitions, 3851 flow [2024-06-27 22:18:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:18:49,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-27 22:18:49,230 INFO L175 Difference]: Start difference. First operand has 164 places, 236 transitions, 3073 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:18:49,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 272 transitions, 3851 flow [2024-06-27 22:18:49,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 272 transitions, 3749 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:49,280 INFO L231 Difference]: Finished difference. Result has 169 places, 243 transitions, 3165 flow [2024-06-27 22:18:49,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3165, PETRI_PLACES=169, PETRI_TRANSITIONS=243} [2024-06-27 22:18:49,281 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-06-27 22:18:49,281 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 243 transitions, 3165 flow [2024-06-27 22:18:49,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:49,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:49,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:49,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:18:49,281 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:49,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash -485652414, now seen corresponding path program 2 times [2024-06-27 22:18:49,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:49,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629271343] [2024-06-27 22:18:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:49,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629271343] [2024-06-27 22:18:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629271343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:50,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:50,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242035305] [2024-06-27 22:18:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:50,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:50,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:50,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:18:50,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 243 transitions, 3165 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:50,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:50,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:18:50,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:50,990 INFO L124 PetriNetUnfolderBase]: 1118/2009 cut-off events. [2024-06-27 22:18:50,990 INFO L125 PetriNetUnfolderBase]: For 33766/33766 co-relation queries the response was YES. [2024-06-27 22:18:51,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11760 conditions, 2009 events. 1118/2009 cut-off events. For 33766/33766 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11394 event pairs, 213 based on Foata normal form. 1/1959 useless extension candidates. Maximal degree in co-relation 11680. Up to 1528 conditions per place. [2024-06-27 22:18:51,006 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 197 selfloop transitions, 72 changer transitions 0/276 dead transitions. [2024-06-27 22:18:51,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 276 transitions, 4019 flow [2024-06-27 22:18:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:18:51,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-27 22:18:51,007 INFO L175 Difference]: Start difference. First operand has 169 places, 243 transitions, 3165 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:18:51,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 276 transitions, 4019 flow [2024-06-27 22:18:51,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 276 transitions, 3940 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 22:18:51,065 INFO L231 Difference]: Finished difference. Result has 174 places, 247 transitions, 3282 flow [2024-06-27 22:18:51,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3282, PETRI_PLACES=174, PETRI_TRANSITIONS=247} [2024-06-27 22:18:51,065 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 131 predicate places. [2024-06-27 22:18:51,066 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 247 transitions, 3282 flow [2024-06-27 22:18:51,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:51,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:51,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:51,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:18:51,066 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:51,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:51,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1757235906, now seen corresponding path program 3 times [2024-06-27 22:18:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:51,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027970120] [2024-06-27 22:18:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:52,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:52,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027970120] [2024-06-27 22:18:52,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027970120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:52,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:52,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:52,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677222259] [2024-06-27 22:18:52,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:52,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:52,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:52,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:52,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:52,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:18:52,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 247 transitions, 3282 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:52,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:52,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:18:52,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:52,868 INFO L124 PetriNetUnfolderBase]: 1116/2006 cut-off events. [2024-06-27 22:18:52,868 INFO L125 PetriNetUnfolderBase]: For 34274/34274 co-relation queries the response was YES. [2024-06-27 22:18:52,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11804 conditions, 2006 events. 1116/2006 cut-off events. For 34274/34274 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11388 event pairs, 212 based on Foata normal form. 1/1956 useless extension candidates. Maximal degree in co-relation 11721. Up to 1526 conditions per place. [2024-06-27 22:18:52,881 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 204 selfloop transitions, 67 changer transitions 0/278 dead transitions. [2024-06-27 22:18:52,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 278 transitions, 4080 flow [2024-06-27 22:18:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:18:52,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-27 22:18:52,882 INFO L175 Difference]: Start difference. First operand has 174 places, 247 transitions, 3282 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:18:52,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 278 transitions, 4080 flow [2024-06-27 22:18:52,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 278 transitions, 3978 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:52,942 INFO L231 Difference]: Finished difference. Result has 178 places, 247 transitions, 3323 flow [2024-06-27 22:18:52,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3180, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3323, PETRI_PLACES=178, PETRI_TRANSITIONS=247} [2024-06-27 22:18:52,942 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-27 22:18:52,942 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 247 transitions, 3323 flow [2024-06-27 22:18:52,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:52,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:52,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:52,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:18:52,943 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:52,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:52,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1807920621, now seen corresponding path program 2 times [2024-06-27 22:18:52,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:52,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067899331] [2024-06-27 22:18:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:52,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:53,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:53,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067899331] [2024-06-27 22:18:53,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067899331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:53,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:53,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:53,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138237669] [2024-06-27 22:18:53,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:53,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:53,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:53,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:53,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:54,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:18:54,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 247 transitions, 3323 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:54,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:54,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:18:54,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:54,595 INFO L124 PetriNetUnfolderBase]: 1069/1967 cut-off events. [2024-06-27 22:18:54,595 INFO L125 PetriNetUnfolderBase]: For 35277/35277 co-relation queries the response was YES. [2024-06-27 22:18:54,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11487 conditions, 1967 events. 1069/1967 cut-off events. For 35277/35277 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11411 event pairs, 211 based on Foata normal form. 1/1916 useless extension candidates. Maximal degree in co-relation 11403. Up to 1611 conditions per place. [2024-06-27 22:18:54,607 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 208 selfloop transitions, 18 changer transitions 0/268 dead transitions. [2024-06-27 22:18:54,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 268 transitions, 3887 flow [2024-06-27 22:18:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 22:18:54,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-27 22:18:54,608 INFO L175 Difference]: Start difference. First operand has 178 places, 247 transitions, 3323 flow. Second operand 8 states and 141 transitions. [2024-06-27 22:18:54,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 268 transitions, 3887 flow [2024-06-27 22:18:54,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 268 transitions, 3734 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:18:54,670 INFO L231 Difference]: Finished difference. Result has 179 places, 249 transitions, 3239 flow [2024-06-27 22:18:54,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3239, PETRI_PLACES=179, PETRI_TRANSITIONS=249} [2024-06-27 22:18:54,670 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 136 predicate places. [2024-06-27 22:18:54,670 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 249 transitions, 3239 flow [2024-06-27 22:18:54,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:54,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:54,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:54,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:18:54,671 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:54,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:54,671 INFO L85 PathProgramCache]: Analyzing trace with hash -857480186, now seen corresponding path program 4 times [2024-06-27 22:18:54,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:54,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556746137] [2024-06-27 22:18:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:54,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:55,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:55,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556746137] [2024-06-27 22:18:55,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556746137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:55,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:55,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:55,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553539125] [2024-06-27 22:18:55,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:55,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:55,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:55,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:55,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:18:55,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 249 transitions, 3239 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:55,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:55,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:18:55,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:56,374 INFO L124 PetriNetUnfolderBase]: 1138/2046 cut-off events. [2024-06-27 22:18:56,374 INFO L125 PetriNetUnfolderBase]: For 37315/37315 co-relation queries the response was YES. [2024-06-27 22:18:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12066 conditions, 2046 events. 1138/2046 cut-off events. For 37315/37315 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11655 event pairs, 215 based on Foata normal form. 1/1994 useless extension candidates. Maximal degree in co-relation 11981. Up to 1781 conditions per place. [2024-06-27 22:18:56,389 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 243 selfloop transitions, 21 changer transitions 0/271 dead transitions. [2024-06-27 22:18:56,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 271 transitions, 3880 flow [2024-06-27 22:18:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 22:18:56,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-06-27 22:18:56,391 INFO L175 Difference]: Start difference. First operand has 179 places, 249 transitions, 3239 flow. Second operand 8 states and 135 transitions. [2024-06-27 22:18:56,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 271 transitions, 3880 flow [2024-06-27 22:18:56,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 271 transitions, 3829 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:56,458 INFO L231 Difference]: Finished difference. Result has 181 places, 251 transitions, 3265 flow [2024-06-27 22:18:56,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3265, PETRI_PLACES=181, PETRI_TRANSITIONS=251} [2024-06-27 22:18:56,459 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 138 predicate places. [2024-06-27 22:18:56,459 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 251 transitions, 3265 flow [2024-06-27 22:18:56,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:56,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:56,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:56,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:18:56,460 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:56,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:56,460 INFO L85 PathProgramCache]: Analyzing trace with hash -867570407, now seen corresponding path program 3 times [2024-06-27 22:18:56,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:56,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223998998] [2024-06-27 22:18:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:56,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:57,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:57,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223998998] [2024-06-27 22:18:57,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223998998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:57,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:57,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451172963] [2024-06-27 22:18:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:57,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:57,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:18:57,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 251 transitions, 3265 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:57,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:57,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:18:57,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:58,233 INFO L124 PetriNetUnfolderBase]: 1171/2110 cut-off events. [2024-06-27 22:18:58,233 INFO L125 PetriNetUnfolderBase]: For 40831/40831 co-relation queries the response was YES. [2024-06-27 22:18:58,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12479 conditions, 2110 events. 1171/2110 cut-off events. For 40831/40831 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12132 event pairs, 216 based on Foata normal form. 3/2057 useless extension candidates. Maximal degree in co-relation 12393. Up to 1722 conditions per place. [2024-06-27 22:18:58,249 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 241 selfloop transitions, 34 changer transitions 0/282 dead transitions. [2024-06-27 22:18:58,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 282 transitions, 4054 flow [2024-06-27 22:18:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 22:18:58,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2024-06-27 22:18:58,250 INFO L175 Difference]: Start difference. First operand has 181 places, 251 transitions, 3265 flow. Second operand 8 states and 145 transitions. [2024-06-27 22:18:58,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 282 transitions, 4054 flow [2024-06-27 22:18:58,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 282 transitions, 4000 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:58,322 INFO L231 Difference]: Finished difference. Result has 183 places, 253 transitions, 3314 flow [2024-06-27 22:18:58,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3211, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3314, PETRI_PLACES=183, PETRI_TRANSITIONS=253} [2024-06-27 22:18:58,322 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 140 predicate places. [2024-06-27 22:18:58,323 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 253 transitions, 3314 flow [2024-06-27 22:18:58,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:58,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:58,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:58,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:18:58,323 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:58,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:58,323 INFO L85 PathProgramCache]: Analyzing trace with hash -867570686, now seen corresponding path program 5 times [2024-06-27 22:18:58,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:58,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521890791] [2024-06-27 22:18:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:59,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521890791] [2024-06-27 22:18:59,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521890791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:59,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:59,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:59,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967561027] [2024-06-27 22:18:59,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:59,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:59,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:59,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:59,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:59,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:18:59,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 253 transitions, 3314 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:59,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:59,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:18:59,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:00,021 INFO L124 PetriNetUnfolderBase]: 1182/2131 cut-off events. [2024-06-27 22:19:00,021 INFO L125 PetriNetUnfolderBase]: For 42005/42005 co-relation queries the response was YES. [2024-06-27 22:19:00,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12722 conditions, 2131 events. 1182/2131 cut-off events. For 42005/42005 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 12292 event pairs, 217 based on Foata normal form. 1/2075 useless extension candidates. Maximal degree in co-relation 12635. Up to 1777 conditions per place. [2024-06-27 22:19:00,041 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 241 selfloop transitions, 38 changer transitions 0/286 dead transitions. [2024-06-27 22:19:00,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 286 transitions, 4175 flow [2024-06-27 22:19:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 22:19:00,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-27 22:19:00,042 INFO L175 Difference]: Start difference. First operand has 183 places, 253 transitions, 3314 flow. Second operand 8 states and 141 transitions. [2024-06-27 22:19:00,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 286 transitions, 4175 flow [2024-06-27 22:19:00,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 286 transitions, 4087 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:00,112 INFO L231 Difference]: Finished difference. Result has 185 places, 255 transitions, 3337 flow [2024-06-27 22:19:00,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3226, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3337, PETRI_PLACES=185, PETRI_TRANSITIONS=255} [2024-06-27 22:19:00,112 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-06-27 22:19:00,113 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 255 transitions, 3337 flow [2024-06-27 22:19:00,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:00,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:00,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:00,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:19:00,113 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:00,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash -857479907, now seen corresponding path program 4 times [2024-06-27 22:19:00,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:00,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985779089] [2024-06-27 22:19:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:00,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:01,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:01,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985779089] [2024-06-27 22:19:01,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985779089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:01,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:01,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:01,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586234361] [2024-06-27 22:19:01,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:01,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:01,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:01,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:01,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:01,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 255 transitions, 3337 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:01,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:01,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:01,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:01,890 INFO L124 PetriNetUnfolderBase]: 1202/2169 cut-off events. [2024-06-27 22:19:01,890 INFO L125 PetriNetUnfolderBase]: For 43684/43684 co-relation queries the response was YES. [2024-06-27 22:19:01,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12812 conditions, 2169 events. 1202/2169 cut-off events. For 43684/43684 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12581 event pairs, 222 based on Foata normal form. 3/2113 useless extension candidates. Maximal degree in co-relation 12724. Up to 1817 conditions per place. [2024-06-27 22:19:01,909 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 250 selfloop transitions, 26 changer transitions 0/283 dead transitions. [2024-06-27 22:19:01,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 283 transitions, 4110 flow [2024-06-27 22:19:01,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 22:19:01,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-27 22:19:01,910 INFO L175 Difference]: Start difference. First operand has 185 places, 255 transitions, 3337 flow. Second operand 8 states and 142 transitions. [2024-06-27 22:19:01,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 283 transitions, 4110 flow [2024-06-27 22:19:01,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 283 transitions, 4008 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:01,987 INFO L231 Difference]: Finished difference. Result has 187 places, 257 transitions, 3320 flow [2024-06-27 22:19:01,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3235, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3320, PETRI_PLACES=187, PETRI_TRANSITIONS=257} [2024-06-27 22:19:01,988 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-27 22:19:01,988 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 257 transitions, 3320 flow [2024-06-27 22:19:01,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:01,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:01,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:01,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:19:01,989 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:01,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:01,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1815054910, now seen corresponding path program 6 times [2024-06-27 22:19:01,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:01,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449905718] [2024-06-27 22:19:01,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:01,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:03,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:03,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449905718] [2024-06-27 22:19:03,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449905718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:03,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:03,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:03,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531345192] [2024-06-27 22:19:03,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:03,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:03,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:03,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:03,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:03,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 257 transitions, 3320 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:03,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:03,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:03,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:03,666 INFO L124 PetriNetUnfolderBase]: 1200/2167 cut-off events. [2024-06-27 22:19:03,666 INFO L125 PetriNetUnfolderBase]: For 43331/43331 co-relation queries the response was YES. [2024-06-27 22:19:03,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12790 conditions, 2167 events. 1200/2167 cut-off events. For 43331/43331 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12593 event pairs, 220 based on Foata normal form. 1/2109 useless extension candidates. Maximal degree in co-relation 12701. Up to 1806 conditions per place. [2024-06-27 22:19:03,684 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 236 selfloop transitions, 41 changer transitions 0/284 dead transitions. [2024-06-27 22:19:03,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 284 transitions, 4048 flow [2024-06-27 22:19:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:03,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:19:03,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-27 22:19:03,686 INFO L175 Difference]: Start difference. First operand has 187 places, 257 transitions, 3320 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:19:03,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 284 transitions, 4048 flow [2024-06-27 22:19:03,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 284 transitions, 3973 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:03,761 INFO L231 Difference]: Finished difference. Result has 189 places, 257 transitions, 3335 flow [2024-06-27 22:19:03,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3335, PETRI_PLACES=189, PETRI_TRANSITIONS=257} [2024-06-27 22:19:03,762 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-27 22:19:03,762 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 257 transitions, 3335 flow [2024-06-27 22:19:03,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:03,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:03,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:03,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:19:03,762 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:03,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:03,762 INFO L85 PathProgramCache]: Analyzing trace with hash -867578343, now seen corresponding path program 4 times [2024-06-27 22:19:03,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:03,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786954028] [2024-06-27 22:19:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:03,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:04,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:04,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786954028] [2024-06-27 22:19:04,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786954028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:04,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:04,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:04,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213381243] [2024-06-27 22:19:04,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:04,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:04,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:04,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:04,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 257 transitions, 3335 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:04,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:04,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:04,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:05,370 INFO L124 PetriNetUnfolderBase]: 1129/2095 cut-off events. [2024-06-27 22:19:05,370 INFO L125 PetriNetUnfolderBase]: For 43970/43970 co-relation queries the response was YES. [2024-06-27 22:19:05,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12334 conditions, 2095 events. 1129/2095 cut-off events. For 43970/43970 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12445 event pairs, 205 based on Foata normal form. 1/2037 useless extension candidates. Maximal degree in co-relation 12244. Up to 1703 conditions per place. [2024-06-27 22:19:05,387 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 223 selfloop transitions, 28 changer transitions 0/278 dead transitions. [2024-06-27 22:19:05,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 278 transitions, 3962 flow [2024-06-27 22:19:05,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:19:05,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 22:19:05,394 INFO L175 Difference]: Start difference. First operand has 189 places, 257 transitions, 3335 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:19:05,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 278 transitions, 3962 flow [2024-06-27 22:19:05,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 278 transitions, 3812 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:19:05,468 INFO L231 Difference]: Finished difference. Result has 190 places, 261 transitions, 3320 flow [2024-06-27 22:19:05,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3320, PETRI_PLACES=190, PETRI_TRANSITIONS=261} [2024-06-27 22:19:05,468 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-27 22:19:05,468 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 261 transitions, 3320 flow [2024-06-27 22:19:05,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:05,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:05,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:05,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:19:05,469 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:05,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash -409325983, now seen corresponding path program 5 times [2024-06-27 22:19:05,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:05,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309020599] [2024-06-27 22:19:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:05,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:06,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:06,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309020599] [2024-06-27 22:19:06,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309020599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:06,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:06,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:06,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671760797] [2024-06-27 22:19:06,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:06,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:06,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:06,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:06,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:06,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:06,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 261 transitions, 3320 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:06,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:06,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:06,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:07,275 INFO L124 PetriNetUnfolderBase]: 1181/2303 cut-off events. [2024-06-27 22:19:07,275 INFO L125 PetriNetUnfolderBase]: For 45954/45954 co-relation queries the response was YES. [2024-06-27 22:19:07,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12816 conditions, 2303 events. 1181/2303 cut-off events. For 45954/45954 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 14249 event pairs, 218 based on Foata normal form. 1/2215 useless extension candidates. Maximal degree in co-relation 12724. Up to 1548 conditions per place. [2024-06-27 22:19:07,295 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 152 selfloop transitions, 142 changer transitions 0/321 dead transitions. [2024-06-27 22:19:07,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 321 transitions, 4412 flow [2024-06-27 22:19:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-27 22:19:07,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160256410256411 [2024-06-27 22:19:07,296 INFO L175 Difference]: Start difference. First operand has 190 places, 261 transitions, 3320 flow. Second operand 8 states and 161 transitions. [2024-06-27 22:19:07,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 321 transitions, 4412 flow [2024-06-27 22:19:07,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 321 transitions, 4366 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:07,377 INFO L231 Difference]: Finished difference. Result has 195 places, 293 transitions, 3978 flow [2024-06-27 22:19:07,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3279, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3978, PETRI_PLACES=195, PETRI_TRANSITIONS=293} [2024-06-27 22:19:07,377 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-27 22:19:07,377 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 293 transitions, 3978 flow [2024-06-27 22:19:07,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:07,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:07,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:07,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:19:07,378 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:07,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:07,378 INFO L85 PathProgramCache]: Analyzing trace with hash 824488495, now seen corresponding path program 6 times [2024-06-27 22:19:07,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:07,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874011019] [2024-06-27 22:19:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:07,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:08,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:08,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874011019] [2024-06-27 22:19:08,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874011019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:08,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:08,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:08,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884991311] [2024-06-27 22:19:08,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:08,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:08,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:08,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:08,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:08,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:08,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 293 transitions, 3978 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:08,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:08,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:08,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:09,539 INFO L124 PetriNetUnfolderBase]: 1243/2401 cut-off events. [2024-06-27 22:19:09,539 INFO L125 PetriNetUnfolderBase]: For 51729/51729 co-relation queries the response was YES. [2024-06-27 22:19:09,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14235 conditions, 2401 events. 1243/2401 cut-off events. For 51729/51729 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14873 event pairs, 222 based on Foata normal form. 1/2313 useless extension candidates. Maximal degree in co-relation 14141. Up to 1615 conditions per place. [2024-06-27 22:19:09,558 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 163 selfloop transitions, 165 changer transitions 0/355 dead transitions. [2024-06-27 22:19:09,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 355 transitions, 5382 flow [2024-06-27 22:19:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:09,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 22:19:09,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2024-06-27 22:19:09,559 INFO L175 Difference]: Start difference. First operand has 195 places, 293 transitions, 3978 flow. Second operand 9 states and 172 transitions. [2024-06-27 22:19:09,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 355 transitions, 5382 flow [2024-06-27 22:19:09,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 355 transitions, 5061 flow, removed 106 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:09,677 INFO L231 Difference]: Finished difference. Result has 203 places, 328 transitions, 4597 flow [2024-06-27 22:19:09,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3785, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4597, PETRI_PLACES=203, PETRI_TRANSITIONS=328} [2024-06-27 22:19:09,677 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 160 predicate places. [2024-06-27 22:19:09,677 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 328 transitions, 4597 flow [2024-06-27 22:19:09,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:09,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:09,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:09,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:19:09,678 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:09,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1178576352, now seen corresponding path program 7 times [2024-06-27 22:19:09,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:09,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919029261] [2024-06-27 22:19:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:09,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:11,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:11,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919029261] [2024-06-27 22:19:11,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919029261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:11,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:11,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:11,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348694432] [2024-06-27 22:19:11,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:11,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:11,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:11,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:11,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:11,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:11,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 328 transitions, 4597 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:11,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:11,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:11,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:11,912 INFO L124 PetriNetUnfolderBase]: 1346/2526 cut-off events. [2024-06-27 22:19:11,912 INFO L125 PetriNetUnfolderBase]: For 53960/53960 co-relation queries the response was YES. [2024-06-27 22:19:11,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15337 conditions, 2526 events. 1346/2526 cut-off events. For 53960/53960 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 15361 event pairs, 241 based on Foata normal form. 1/2438 useless extension candidates. Maximal degree in co-relation 15238. Up to 1840 conditions per place. [2024-06-27 22:19:11,933 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 237 selfloop transitions, 145 changer transitions 0/389 dead transitions. [2024-06-27 22:19:11,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 389 transitions, 5891 flow [2024-06-27 22:19:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:19:11,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2024-06-27 22:19:11,934 INFO L175 Difference]: Start difference. First operand has 203 places, 328 transitions, 4597 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:19:11,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 389 transitions, 5891 flow [2024-06-27 22:19:12,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 389 transitions, 5710 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:12,043 INFO L231 Difference]: Finished difference. Result has 209 places, 364 transitions, 5166 flow [2024-06-27 22:19:12,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4416, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5166, PETRI_PLACES=209, PETRI_TRANSITIONS=364} [2024-06-27 22:19:12,044 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-06-27 22:19:12,044 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 364 transitions, 5166 flow [2024-06-27 22:19:12,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:12,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:12,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:12,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:19:12,044 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:12,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:12,045 INFO L85 PathProgramCache]: Analyzing trace with hash 824638225, now seen corresponding path program 7 times [2024-06-27 22:19:12,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:12,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526237480] [2024-06-27 22:19:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:12,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:13,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:13,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526237480] [2024-06-27 22:19:13,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526237480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:13,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:13,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:13,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068856111] [2024-06-27 22:19:13,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:13,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:13,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:13,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:13,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:13,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 364 transitions, 5166 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:13,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:13,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:13,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:14,299 INFO L124 PetriNetUnfolderBase]: 1282/2464 cut-off events. [2024-06-27 22:19:14,299 INFO L125 PetriNetUnfolderBase]: For 57566/57566 co-relation queries the response was YES. [2024-06-27 22:19:14,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15410 conditions, 2464 events. 1282/2464 cut-off events. For 57566/57566 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15290 event pairs, 220 based on Foata normal form. 1/2375 useless extension candidates. Maximal degree in co-relation 15309. Up to 1664 conditions per place. [2024-06-27 22:19:14,321 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 186 selfloop transitions, 169 changer transitions 0/398 dead transitions. [2024-06-27 22:19:14,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 398 transitions, 6162 flow [2024-06-27 22:19:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:14,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:19:14,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-27 22:19:14,322 INFO L175 Difference]: Start difference. First operand has 209 places, 364 transitions, 5166 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:19:14,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 398 transitions, 6162 flow [2024-06-27 22:19:14,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 398 transitions, 5956 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:14,457 INFO L231 Difference]: Finished difference. Result has 214 places, 371 transitions, 5394 flow [2024-06-27 22:19:14,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4968, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5394, PETRI_PLACES=214, PETRI_TRANSITIONS=371} [2024-06-27 22:19:14,457 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 171 predicate places. [2024-06-27 22:19:14,457 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 371 transitions, 5394 flow [2024-06-27 22:19:14,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:14,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:14,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:14,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:19:14,458 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:14,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:14,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2112878563, now seen corresponding path program 8 times [2024-06-27 22:19:14,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:14,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771297378] [2024-06-27 22:19:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:14,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:16,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771297378] [2024-06-27 22:19:16,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771297378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:16,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:16,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578765195] [2024-06-27 22:19:16,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:16,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:16,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:16,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 371 transitions, 5394 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:16,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:16,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:16,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:16,947 INFO L124 PetriNetUnfolderBase]: 1340/2552 cut-off events. [2024-06-27 22:19:16,948 INFO L125 PetriNetUnfolderBase]: For 59905/59905 co-relation queries the response was YES. [2024-06-27 22:19:16,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16229 conditions, 2552 events. 1340/2552 cut-off events. For 59905/59905 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15856 event pairs, 235 based on Foata normal form. 1/2463 useless extension candidates. Maximal degree in co-relation 16126. Up to 1722 conditions per place. [2024-06-27 22:19:16,970 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 185 selfloop transitions, 205 changer transitions 0/433 dead transitions. [2024-06-27 22:19:16,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 433 transitions, 6889 flow [2024-06-27 22:19:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:19:16,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:19:16,971 INFO L175 Difference]: Start difference. First operand has 214 places, 371 transitions, 5394 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:19:16,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 433 transitions, 6889 flow [2024-06-27 22:19:17,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 433 transitions, 6544 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:17,120 INFO L231 Difference]: Finished difference. Result has 219 places, 410 transitions, 6119 flow [2024-06-27 22:19:17,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5113, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6119, PETRI_PLACES=219, PETRI_TRANSITIONS=410} [2024-06-27 22:19:17,121 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 176 predicate places. [2024-06-27 22:19:17,121 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 410 transitions, 6119 flow [2024-06-27 22:19:17,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:17,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:17,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:17,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:19:17,122 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:17,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:17,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2112728616, now seen corresponding path program 8 times [2024-06-27 22:19:17,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:17,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872299449] [2024-06-27 22:19:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:17,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:18,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872299449] [2024-06-27 22:19:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872299449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:18,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:18,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028490330] [2024-06-27 22:19:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:18,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:18,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:18,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 410 transitions, 6119 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:18,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:18,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:18,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:19,654 INFO L124 PetriNetUnfolderBase]: 1444/2677 cut-off events. [2024-06-27 22:19:19,654 INFO L125 PetriNetUnfolderBase]: For 62729/62729 co-relation queries the response was YES. [2024-06-27 22:19:19,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17250 conditions, 2677 events. 1444/2677 cut-off events. For 62729/62729 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16385 event pairs, 248 based on Foata normal form. 1/2589 useless extension candidates. Maximal degree in co-relation 17144. Up to 1976 conditions per place. [2024-06-27 22:19:19,681 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 287 selfloop transitions, 163 changer transitions 0/457 dead transitions. [2024-06-27 22:19:19,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 457 transitions, 7435 flow [2024-06-27 22:19:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:19,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:19,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:19:19,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-06-27 22:19:19,683 INFO L175 Difference]: Start difference. First operand has 219 places, 410 transitions, 6119 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:19:19,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 457 transitions, 7435 flow [2024-06-27 22:19:19,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 457 transitions, 7202 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:19,833 INFO L231 Difference]: Finished difference. Result has 224 places, 434 transitions, 6514 flow [2024-06-27 22:19:19,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5886, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6514, PETRI_PLACES=224, PETRI_TRANSITIONS=434} [2024-06-27 22:19:19,834 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 181 predicate places. [2024-06-27 22:19:19,834 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 434 transitions, 6514 flow [2024-06-27 22:19:19,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:19,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:19,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:19,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:19:19,834 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:19,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2112728833, now seen corresponding path program 9 times [2024-06-27 22:19:19,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:19,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939262306] [2024-06-27 22:19:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:19,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:21,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:21,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939262306] [2024-06-27 22:19:21,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939262306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:21,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664481932] [2024-06-27 22:19:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:21,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:21,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:21,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:21,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 434 transitions, 6514 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:21,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:21,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:21,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:22,358 INFO L124 PetriNetUnfolderBase]: 1395/2637 cut-off events. [2024-06-27 22:19:22,358 INFO L125 PetriNetUnfolderBase]: For 66274/66274 co-relation queries the response was YES. [2024-06-27 22:19:22,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17186 conditions, 2637 events. 1395/2637 cut-off events. For 66274/66274 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16408 event pairs, 237 based on Foata normal form. 1/2548 useless extension candidates. Maximal degree in co-relation 17079. Up to 1781 conditions per place. [2024-06-27 22:19:22,385 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 206 selfloop transitions, 209 changer transitions 0/467 dead transitions. [2024-06-27 22:19:22,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 467 transitions, 7653 flow [2024-06-27 22:19:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:19:22,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:19:22,387 INFO L175 Difference]: Start difference. First operand has 224 places, 434 transitions, 6514 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:19:22,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 467 transitions, 7653 flow [2024-06-27 22:19:22,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 467 transitions, 7440 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:22,561 INFO L231 Difference]: Finished difference. Result has 230 places, 443 transitions, 6856 flow [2024-06-27 22:19:22,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6301, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6856, PETRI_PLACES=230, PETRI_TRANSITIONS=443} [2024-06-27 22:19:22,562 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2024-06-27 22:19:22,562 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 443 transitions, 6856 flow [2024-06-27 22:19:22,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:22,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:22,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:22,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:19:22,563 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:22,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:22,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1419886056, now seen corresponding path program 9 times [2024-06-27 22:19:22,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:22,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528172436] [2024-06-27 22:19:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:22,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:24,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:24,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528172436] [2024-06-27 22:19:24,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528172436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:24,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:24,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:24,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180094319] [2024-06-27 22:19:24,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:24,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:24,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:24,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:24,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:24,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 443 transitions, 6856 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:24,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:24,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:24,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:25,114 INFO L124 PetriNetUnfolderBase]: 1480/2733 cut-off events. [2024-06-27 22:19:25,114 INFO L125 PetriNetUnfolderBase]: For 70017/70017 co-relation queries the response was YES. [2024-06-27 22:19:25,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17928 conditions, 2733 events. 1480/2733 cut-off events. For 70017/70017 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16707 event pairs, 242 based on Foata normal form. 1/2644 useless extension candidates. Maximal degree in co-relation 17819. Up to 2024 conditions per place. [2024-06-27 22:19:25,138 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 302 selfloop transitions, 170 changer transitions 0/479 dead transitions. [2024-06-27 22:19:25,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 479 transitions, 8149 flow [2024-06-27 22:19:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:19:25,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-06-27 22:19:25,140 INFO L175 Difference]: Start difference. First operand has 230 places, 443 transitions, 6856 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:19:25,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 479 transitions, 8149 flow [2024-06-27 22:19:25,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 479 transitions, 7780 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:25,348 INFO L231 Difference]: Finished difference. Result has 232 places, 454 transitions, 6977 flow [2024-06-27 22:19:25,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6487, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6977, PETRI_PLACES=232, PETRI_TRANSITIONS=454} [2024-06-27 22:19:25,348 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 189 predicate places. [2024-06-27 22:19:25,348 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 454 transitions, 6977 flow [2024-06-27 22:19:25,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:25,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:25,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:25,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:19:25,349 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:25,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:25,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2107164643, now seen corresponding path program 10 times [2024-06-27 22:19:25,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:25,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981365847] [2024-06-27 22:19:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:25,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:26,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:26,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981365847] [2024-06-27 22:19:26,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981365847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:26,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:26,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:26,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406681637] [2024-06-27 22:19:26,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:26,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:26,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:26,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:26,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:27,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:27,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 454 transitions, 6977 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:27,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:27,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:27,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:27,934 INFO L124 PetriNetUnfolderBase]: 1415/2668 cut-off events. [2024-06-27 22:19:27,934 INFO L125 PetriNetUnfolderBase]: For 71528/71528 co-relation queries the response was YES. [2024-06-27 22:19:27,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17517 conditions, 2668 events. 1415/2668 cut-off events. For 71528/71528 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16599 event pairs, 230 based on Foata normal form. 1/2578 useless extension candidates. Maximal degree in co-relation 17408. Up to 1804 conditions per place. [2024-06-27 22:19:27,956 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 210 selfloop transitions, 219 changer transitions 0/485 dead transitions. [2024-06-27 22:19:27,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 485 transitions, 8065 flow [2024-06-27 22:19:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:19:27,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 22:19:27,957 INFO L175 Difference]: Start difference. First operand has 232 places, 454 transitions, 6977 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:19:27,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 485 transitions, 8065 flow [2024-06-27 22:19:28,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 485 transitions, 7756 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:28,153 INFO L231 Difference]: Finished difference. Result has 237 places, 460 transitions, 7215 flow [2024-06-27 22:19:28,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6672, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7215, PETRI_PLACES=237, PETRI_TRANSITIONS=460} [2024-06-27 22:19:28,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 194 predicate places. [2024-06-27 22:19:28,153 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 460 transitions, 7215 flow [2024-06-27 22:19:28,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:28,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:28,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:28,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:19:28,154 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:28,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2107156986, now seen corresponding path program 10 times [2024-06-27 22:19:28,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:28,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998905791] [2024-06-27 22:19:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998905791] [2024-06-27 22:19:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998905791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:29,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:29,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:29,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114642874] [2024-06-27 22:19:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:29,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:29,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:29,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:29,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:29,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:29,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 460 transitions, 7215 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:29,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:29,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:29,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:30,701 INFO L124 PetriNetUnfolderBase]: 1480/2733 cut-off events. [2024-06-27 22:19:30,701 INFO L125 PetriNetUnfolderBase]: For 73241/73241 co-relation queries the response was YES. [2024-06-27 22:19:30,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17977 conditions, 2733 events. 1480/2733 cut-off events. For 73241/73241 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16741 event pairs, 242 based on Foata normal form. 1/2644 useless extension candidates. Maximal degree in co-relation 17866. Up to 2025 conditions per place. [2024-06-27 22:19:30,728 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 300 selfloop transitions, 176 changer transitions 0/483 dead transitions. [2024-06-27 22:19:30,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 483 transitions, 8279 flow [2024-06-27 22:19:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 22:19:30,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:19:30,729 INFO L175 Difference]: Start difference. First operand has 237 places, 460 transitions, 7215 flow. Second operand 8 states and 152 transitions. [2024-06-27 22:19:30,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 483 transitions, 8279 flow [2024-06-27 22:19:30,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 483 transitions, 7912 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:30,928 INFO L231 Difference]: Finished difference. Result has 239 places, 460 transitions, 7212 flow [2024-06-27 22:19:30,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6848, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7212, PETRI_PLACES=239, PETRI_TRANSITIONS=460} [2024-06-27 22:19:30,929 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 196 predicate places. [2024-06-27 22:19:30,929 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 460 transitions, 7212 flow [2024-06-27 22:19:30,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:30,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:30,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:30,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:19:30,929 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:30,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2107156707, now seen corresponding path program 5 times [2024-06-27 22:19:30,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:30,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781046825] [2024-06-27 22:19:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:30,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:32,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:32,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781046825] [2024-06-27 22:19:32,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781046825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:32,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:32,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:32,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583973357] [2024-06-27 22:19:32,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:32,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:32,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:32,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:32,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 460 transitions, 7212 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:32,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:32,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:32,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:33,445 INFO L124 PetriNetUnfolderBase]: 1418/2661 cut-off events. [2024-06-27 22:19:33,446 INFO L125 PetriNetUnfolderBase]: For 76967/77053 co-relation queries the response was YES. [2024-06-27 22:19:33,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17270 conditions, 2661 events. 1418/2661 cut-off events. For 76967/77053 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16456 event pairs, 253 based on Foata normal form. 69/2638 useless extension candidates. Maximal degree in co-relation 17159. Up to 1965 conditions per place. [2024-06-27 22:19:33,473 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 353 selfloop transitions, 75 changer transitions 0/501 dead transitions. [2024-06-27 22:19:33,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 501 transitions, 8391 flow [2024-06-27 22:19:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:33,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:19:33,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 22:19:33,475 INFO L175 Difference]: Start difference. First operand has 239 places, 460 transitions, 7212 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:19:33,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 501 transitions, 8391 flow [2024-06-27 22:19:33,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 501 transitions, 8004 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:33,672 INFO L231 Difference]: Finished difference. Result has 242 places, 479 transitions, 7253 flow [2024-06-27 22:19:33,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6825, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7253, PETRI_PLACES=242, PETRI_TRANSITIONS=479} [2024-06-27 22:19:33,672 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 199 predicate places. [2024-06-27 22:19:33,673 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 479 transitions, 7253 flow [2024-06-27 22:19:33,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:33,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:33,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:33,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:19:33,673 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:33,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1537519332, now seen corresponding path program 1 times [2024-06-27 22:19:33,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:33,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100814384] [2024-06-27 22:19:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:33,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:34,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:34,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100814384] [2024-06-27 22:19:34,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100814384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:34,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:34,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:34,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560611729] [2024-06-27 22:19:34,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:34,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:34,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:34,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:34,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:35,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:35,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 479 transitions, 7253 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:35,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:35,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:35,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:35,820 INFO L124 PetriNetUnfolderBase]: 1448/2643 cut-off events. [2024-06-27 22:19:35,820 INFO L125 PetriNetUnfolderBase]: For 79106/79106 co-relation queries the response was YES. [2024-06-27 22:19:35,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17974 conditions, 2643 events. 1448/2643 cut-off events. For 79106/79106 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16343 event pairs, 229 based on Foata normal form. 1/2574 useless extension candidates. Maximal degree in co-relation 17860. Up to 2100 conditions per place. [2024-06-27 22:19:35,847 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 425 selfloop transitions, 35 changer transitions 0/516 dead transitions. [2024-06-27 22:19:35,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 516 transitions, 8454 flow [2024-06-27 22:19:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:35,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:19:35,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700854700854701 [2024-06-27 22:19:35,848 INFO L175 Difference]: Start difference. First operand has 242 places, 479 transitions, 7253 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:19:35,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 516 transitions, 8454 flow [2024-06-27 22:19:36,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 516 transitions, 8338 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:36,056 INFO L231 Difference]: Finished difference. Result has 250 places, 485 transitions, 7319 flow [2024-06-27 22:19:36,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7143, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7319, PETRI_PLACES=250, PETRI_TRANSITIONS=485} [2024-06-27 22:19:36,057 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 207 predicate places. [2024-06-27 22:19:36,057 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 485 transitions, 7319 flow [2024-06-27 22:19:36,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:36,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:36,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:36,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:19:36,058 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:36,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:36,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1947276110, now seen corresponding path program 2 times [2024-06-27 22:19:36,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:36,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497970330] [2024-06-27 22:19:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:36,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:37,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:37,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497970330] [2024-06-27 22:19:37,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497970330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:37,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:37,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:37,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301701704] [2024-06-27 22:19:37,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:37,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:37,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:37,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:37,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:37,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 485 transitions, 7319 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:37,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:37,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:37,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:38,098 INFO L124 PetriNetUnfolderBase]: 1481/2696 cut-off events. [2024-06-27 22:19:38,098 INFO L125 PetriNetUnfolderBase]: For 82740/82740 co-relation queries the response was YES. [2024-06-27 22:19:38,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18427 conditions, 2696 events. 1481/2696 cut-off events. For 82740/82740 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16757 event pairs, 226 based on Foata normal form. 1/2625 useless extension candidates. Maximal degree in co-relation 18308. Up to 1896 conditions per place. [2024-06-27 22:19:38,126 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 370 selfloop transitions, 97 changer transitions 0/523 dead transitions. [2024-06-27 22:19:38,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 523 transitions, 8629 flow [2024-06-27 22:19:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:19:38,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:19:38,127 INFO L175 Difference]: Start difference. First operand has 250 places, 485 transitions, 7319 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:19:38,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 523 transitions, 8629 flow [2024-06-27 22:19:38,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 523 transitions, 8511 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:38,351 INFO L231 Difference]: Finished difference. Result has 254 places, 491 transitions, 7509 flow [2024-06-27 22:19:38,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7201, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7509, PETRI_PLACES=254, PETRI_TRANSITIONS=491} [2024-06-27 22:19:38,352 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-27 22:19:38,352 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 491 transitions, 7509 flow [2024-06-27 22:19:38,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:38,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:38,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:38,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:19:38,352 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:38,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:38,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1947276296, now seen corresponding path program 1 times [2024-06-27 22:19:38,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:38,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486718570] [2024-06-27 22:19:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:38,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:39,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:39,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486718570] [2024-06-27 22:19:39,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486718570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:39,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:39,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:39,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493711411] [2024-06-27 22:19:39,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:39,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:39,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:39,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:39,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:39,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:39,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 491 transitions, 7509 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:39,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:39,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:39,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:40,353 INFO L124 PetriNetUnfolderBase]: 1578/2913 cut-off events. [2024-06-27 22:19:40,353 INFO L125 PetriNetUnfolderBase]: For 87266/87266 co-relation queries the response was YES. [2024-06-27 22:19:40,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19607 conditions, 2913 events. 1578/2913 cut-off events. For 87266/87266 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 18199 event pairs, 284 based on Foata normal form. 1/2817 useless extension candidates. Maximal degree in co-relation 19486. Up to 1946 conditions per place. [2024-06-27 22:19:40,381 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 369 selfloop transitions, 153 changer transitions 0/529 dead transitions. [2024-06-27 22:19:40,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 529 transitions, 8904 flow [2024-06-27 22:19:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:40,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:19:40,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700854700854701 [2024-06-27 22:19:40,382 INFO L175 Difference]: Start difference. First operand has 254 places, 491 transitions, 7509 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:19:40,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 529 transitions, 8904 flow [2024-06-27 22:19:40,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 529 transitions, 8798 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:40,637 INFO L231 Difference]: Finished difference. Result has 259 places, 495 transitions, 7775 flow [2024-06-27 22:19:40,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7407, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7775, PETRI_PLACES=259, PETRI_TRANSITIONS=495} [2024-06-27 22:19:40,638 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 216 predicate places. [2024-06-27 22:19:40,638 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 495 transitions, 7775 flow [2024-06-27 22:19:40,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:40,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:40,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:40,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:19:40,639 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:40,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:40,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1951924436, now seen corresponding path program 2 times [2024-06-27 22:19:40,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:40,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176356307] [2024-06-27 22:19:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:40,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:41,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:41,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176356307] [2024-06-27 22:19:41,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176356307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:41,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:41,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:41,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703242992] [2024-06-27 22:19:41,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:41,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:41,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:41,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:41,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:41,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 495 transitions, 7775 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:41,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:41,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:41,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:42,734 INFO L124 PetriNetUnfolderBase]: 1605/2968 cut-off events. [2024-06-27 22:19:42,734 INFO L125 PetriNetUnfolderBase]: For 92065/92065 co-relation queries the response was YES. [2024-06-27 22:19:42,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20395 conditions, 2968 events. 1605/2968 cut-off events. For 92065/92065 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18638 event pairs, 285 based on Foata normal form. 1/2869 useless extension candidates. Maximal degree in co-relation 20272. Up to 1974 conditions per place. [2024-06-27 22:19:42,763 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 401 selfloop transitions, 133 changer transitions 0/541 dead transitions. [2024-06-27 22:19:42,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 541 transitions, 9425 flow [2024-06-27 22:19:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:19:42,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-27 22:19:42,764 INFO L175 Difference]: Start difference. First operand has 259 places, 495 transitions, 7775 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:19:42,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 541 transitions, 9425 flow [2024-06-27 22:19:43,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 541 transitions, 9233 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:43,045 INFO L231 Difference]: Finished difference. Result has 264 places, 501 transitions, 7982 flow [2024-06-27 22:19:43,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7597, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7982, PETRI_PLACES=264, PETRI_TRANSITIONS=501} [2024-06-27 22:19:43,046 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 221 predicate places. [2024-06-27 22:19:43,046 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 501 transitions, 7982 flow [2024-06-27 22:19:43,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:43,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:43,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:43,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:19:43,047 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:43,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1951917926, now seen corresponding path program 3 times [2024-06-27 22:19:43,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:43,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499742808] [2024-06-27 22:19:43,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499742808] [2024-06-27 22:19:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499742808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:44,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:44,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:44,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932748580] [2024-06-27 22:19:44,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:44,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:44,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:44,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:44,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:44,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:44,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 501 transitions, 7982 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:44,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:44,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:44,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:45,101 INFO L124 PetriNetUnfolderBase]: 1603/2965 cut-off events. [2024-06-27 22:19:45,101 INFO L125 PetriNetUnfolderBase]: For 93515/93515 co-relation queries the response was YES. [2024-06-27 22:19:45,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20645 conditions, 2965 events. 1603/2965 cut-off events. For 93515/93515 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 18609 event pairs, 284 based on Foata normal form. 1/2866 useless extension candidates. Maximal degree in co-relation 20519. Up to 1972 conditions per place. [2024-06-27 22:19:45,136 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 409 selfloop transitions, 127 changer transitions 0/543 dead transitions. [2024-06-27 22:19:45,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 543 transitions, 9506 flow [2024-06-27 22:19:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:45,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:19:45,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-27 22:19:45,138 INFO L175 Difference]: Start difference. First operand has 264 places, 501 transitions, 7982 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:19:45,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 543 transitions, 9506 flow [2024-06-27 22:19:45,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 543 transitions, 9367 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:45,436 INFO L231 Difference]: Finished difference. Result has 269 places, 501 transitions, 8107 flow [2024-06-27 22:19:45,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7843, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8107, PETRI_PLACES=269, PETRI_TRANSITIONS=501} [2024-06-27 22:19:45,437 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-27 22:19:45,437 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 501 transitions, 8107 flow [2024-06-27 22:19:45,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:45,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:45,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:45,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:19:45,437 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:45,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1532757732, now seen corresponding path program 3 times [2024-06-27 22:19:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:45,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607102853] [2024-06-27 22:19:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:46,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:46,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607102853] [2024-06-27 22:19:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607102853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:46,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853161120] [2024-06-27 22:19:46,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:46,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:46,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:46,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:46,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:46,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:46,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 501 transitions, 8107 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:46,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:46,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:46,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:47,466 INFO L124 PetriNetUnfolderBase]: 1541/2810 cut-off events. [2024-06-27 22:19:47,466 INFO L125 PetriNetUnfolderBase]: For 97300/97300 co-relation queries the response was YES. [2024-06-27 22:19:47,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20320 conditions, 2810 events. 1541/2810 cut-off events. For 97300/97300 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17669 event pairs, 231 based on Foata normal form. 1/2734 useless extension candidates. Maximal degree in co-relation 20193. Up to 1960 conditions per place. [2024-06-27 22:19:47,493 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 385 selfloop transitions, 91 changer transitions 0/536 dead transitions. [2024-06-27 22:19:47,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 536 transitions, 9433 flow [2024-06-27 22:19:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:19:47,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:19:47,494 INFO L175 Difference]: Start difference. First operand has 269 places, 501 transitions, 8107 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:19:47,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 536 transitions, 9433 flow [2024-06-27 22:19:47,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 536 transitions, 9178 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:47,796 INFO L231 Difference]: Finished difference. Result has 271 places, 503 transitions, 8074 flow [2024-06-27 22:19:47,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7854, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8074, PETRI_PLACES=271, PETRI_TRANSITIONS=503} [2024-06-27 22:19:47,796 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 228 predicate places. [2024-06-27 22:19:47,796 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 503 transitions, 8074 flow [2024-06-27 22:19:47,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:47,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:47,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:47,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:19:47,797 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:47,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:47,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1532750788, now seen corresponding path program 1 times [2024-06-27 22:19:47,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:47,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190353731] [2024-06-27 22:19:47,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:47,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:49,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190353731] [2024-06-27 22:19:49,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190353731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:49,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:49,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843510015] [2024-06-27 22:19:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:49,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:49,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:49,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:49,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 503 transitions, 8074 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:49,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:49,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:49,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:49,990 INFO L124 PetriNetUnfolderBase]: 1686/3117 cut-off events. [2024-06-27 22:19:49,990 INFO L125 PetriNetUnfolderBase]: For 107409/107409 co-relation queries the response was YES. [2024-06-27 22:19:50,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21694 conditions, 3117 events. 1686/3117 cut-off events. For 107409/107409 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19768 event pairs, 306 based on Foata normal form. 3/3014 useless extension candidates. Maximal degree in co-relation 21566. Up to 1980 conditions per place. [2024-06-27 22:19:50,033 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 432 selfloop transitions, 114 changer transitions 0/553 dead transitions. [2024-06-27 22:19:50,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 553 transitions, 9726 flow [2024-06-27 22:19:50,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 22:19:50,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2024-06-27 22:19:50,034 INFO L175 Difference]: Start difference. First operand has 271 places, 503 transitions, 8074 flow. Second operand 9 states and 172 transitions. [2024-06-27 22:19:50,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 553 transitions, 9726 flow [2024-06-27 22:19:50,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 553 transitions, 9492 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:19:50,363 INFO L231 Difference]: Finished difference. Result has 272 places, 507 transitions, 8121 flow [2024-06-27 22:19:50,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7840, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8121, PETRI_PLACES=272, PETRI_TRANSITIONS=507} [2024-06-27 22:19:50,363 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 229 predicate places. [2024-06-27 22:19:50,364 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 507 transitions, 8121 flow [2024-06-27 22:19:50,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:50,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:50,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:50,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:19:50,364 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:50,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2124644966, now seen corresponding path program 4 times [2024-06-27 22:19:50,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:50,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924141490] [2024-06-27 22:19:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:50,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:51,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:51,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924141490] [2024-06-27 22:19:51,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924141490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:51,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:51,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:51,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355457997] [2024-06-27 22:19:51,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:51,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:51,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:51,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:51,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:51,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 507 transitions, 8121 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:51,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:51,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:51,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:52,392 INFO L124 PetriNetUnfolderBase]: 1713/3166 cut-off events. [2024-06-27 22:19:52,392 INFO L125 PetriNetUnfolderBase]: For 109785/109785 co-relation queries the response was YES. [2024-06-27 22:19:52,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22189 conditions, 3166 events. 1713/3166 cut-off events. For 109785/109785 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 20200 event pairs, 310 based on Foata normal form. 1/3060 useless extension candidates. Maximal degree in co-relation 22061. Up to 2128 conditions per place. [2024-06-27 22:19:52,428 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 412 selfloop transitions, 140 changer transitions 0/559 dead transitions. [2024-06-27 22:19:52,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 559 transitions, 9912 flow [2024-06-27 22:19:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:52,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:19:52,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-27 22:19:52,429 INFO L175 Difference]: Start difference. First operand has 272 places, 507 transitions, 8121 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:19:52,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 559 transitions, 9912 flow [2024-06-27 22:19:52,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 559 transitions, 9826 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:52,815 INFO L231 Difference]: Finished difference. Result has 278 places, 513 transitions, 8464 flow [2024-06-27 22:19:52,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8035, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8464, PETRI_PLACES=278, PETRI_TRANSITIONS=513} [2024-06-27 22:19:52,816 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 235 predicate places. [2024-06-27 22:19:52,816 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 513 transitions, 8464 flow [2024-06-27 22:19:52,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:52,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:52,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:52,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:19:52,817 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:52,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:52,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1360261146, now seen corresponding path program 5 times [2024-06-27 22:19:52,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:52,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950478526] [2024-06-27 22:19:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:52,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:54,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:54,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950478526] [2024-06-27 22:19:54,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950478526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:54,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:54,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:54,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306836836] [2024-06-27 22:19:54,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:54,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:54,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:54,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:54,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 513 transitions, 8464 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:54,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:54,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:54,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:54,976 INFO L124 PetriNetUnfolderBase]: 1724/3187 cut-off events. [2024-06-27 22:19:54,976 INFO L125 PetriNetUnfolderBase]: For 113548/113548 co-relation queries the response was YES. [2024-06-27 22:19:54,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22770 conditions, 3187 events. 1724/3187 cut-off events. For 113548/113548 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 20374 event pairs, 308 based on Foata normal form. 1/3080 useless extension candidates. Maximal degree in co-relation 22639. Up to 2140 conditions per place. [2024-06-27 22:19:55,008 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 438 selfloop transitions, 125 changer transitions 0/570 dead transitions. [2024-06-27 22:19:55,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 570 transitions, 10386 flow [2024-06-27 22:19:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:55,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:19:55,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 22:19:55,009 INFO L175 Difference]: Start difference. First operand has 278 places, 513 transitions, 8464 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:19:55,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 570 transitions, 10386 flow [2024-06-27 22:19:55,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 570 transitions, 10261 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:55,397 INFO L231 Difference]: Finished difference. Result has 283 places, 515 transitions, 8626 flow [2024-06-27 22:19:55,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8343, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8626, PETRI_PLACES=283, PETRI_TRANSITIONS=515} [2024-06-27 22:19:55,397 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 240 predicate places. [2024-06-27 22:19:55,397 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 515 transitions, 8626 flow [2024-06-27 22:19:55,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:55,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:55,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:55,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:19:55,398 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:55,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2124414574, now seen corresponding path program 2 times [2024-06-27 22:19:55,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:55,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107484979] [2024-06-27 22:19:55,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:55,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:56,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:56,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107484979] [2024-06-27 22:19:56,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107484979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:56,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:56,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:56,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289339735] [2024-06-27 22:19:56,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:56,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:56,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:56,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:56,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:56,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:19:56,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 515 transitions, 8626 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:56,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:56,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:19:56,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:57,602 INFO L124 PetriNetUnfolderBase]: 1796/3322 cut-off events. [2024-06-27 22:19:57,602 INFO L125 PetriNetUnfolderBase]: For 126741/126741 co-relation queries the response was YES. [2024-06-27 22:19:57,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23750 conditions, 3322 events. 1796/3322 cut-off events. For 126741/126741 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 21364 event pairs, 314 based on Foata normal form. 3/3211 useless extension candidates. Maximal degree in co-relation 23618. Up to 2091 conditions per place. [2024-06-27 22:19:57,641 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 478 selfloop transitions, 99 changer transitions 0/584 dead transitions. [2024-06-27 22:19:57,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 584 transitions, 10620 flow [2024-06-27 22:19:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 22:19:57,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2024-06-27 22:19:57,642 INFO L175 Difference]: Start difference. First operand has 283 places, 515 transitions, 8626 flow. Second operand 9 states and 176 transitions. [2024-06-27 22:19:57,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 584 transitions, 10620 flow [2024-06-27 22:19:58,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 584 transitions, 10368 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:58,130 INFO L231 Difference]: Finished difference. Result has 286 places, 519 transitions, 8625 flow [2024-06-27 22:19:58,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8374, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8625, PETRI_PLACES=286, PETRI_TRANSITIONS=519} [2024-06-27 22:19:58,130 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 243 predicate places. [2024-06-27 22:19:58,130 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 519 transitions, 8625 flow [2024-06-27 22:19:58,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:58,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:58,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:58,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:19:58,131 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:58,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:58,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2124407630, now seen corresponding path program 4 times [2024-06-27 22:19:58,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:58,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427118663] [2024-06-27 22:19:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:58,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:59,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:59,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427118663] [2024-06-27 22:19:59,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427118663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:59,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:59,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079889395] [2024-06-27 22:19:59,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:59,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:59,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:59,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:59,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:59,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 519 transitions, 8625 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:59,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:59,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:59,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:00,260 INFO L124 PetriNetUnfolderBase]: 1720/3161 cut-off events. [2024-06-27 22:20:00,260 INFO L125 PetriNetUnfolderBase]: For 127956/127956 co-relation queries the response was YES. [2024-06-27 22:20:00,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23275 conditions, 3161 events. 1720/3161 cut-off events. For 127956/127956 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 20493 event pairs, 262 based on Foata normal form. 1/3069 useless extension candidates. Maximal degree in co-relation 23142. Up to 2223 conditions per place. [2024-06-27 22:20:00,297 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 401 selfloop transitions, 91 changer transitions 0/555 dead transitions. [2024-06-27 22:20:00,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 555 transitions, 10039 flow [2024-06-27 22:20:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:20:00,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:20:00,298 INFO L175 Difference]: Start difference. First operand has 286 places, 519 transitions, 8625 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:20:00,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 555 transitions, 10039 flow [2024-06-27 22:20:00,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 555 transitions, 9901 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:00,754 INFO L231 Difference]: Finished difference. Result has 290 places, 521 transitions, 8709 flow [2024-06-27 22:20:00,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8487, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8709, PETRI_PLACES=290, PETRI_TRANSITIONS=521} [2024-06-27 22:20:00,754 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 247 predicate places. [2024-06-27 22:20:00,755 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 521 transitions, 8709 flow [2024-06-27 22:20:00,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:00,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:00,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:00,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:20:00,755 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:00,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2124645214, now seen corresponding path program 3 times [2024-06-27 22:20:00,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:00,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597548533] [2024-06-27 22:20:00,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:00,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:02,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:02,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597548533] [2024-06-27 22:20:02,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597548533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:02,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:02,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:02,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277556754] [2024-06-27 22:20:02,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:02,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:02,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:02,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:02,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:02,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:02,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 521 transitions, 8709 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:02,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:02,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:02,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:02,947 INFO L124 PetriNetUnfolderBase]: 1840/3406 cut-off events. [2024-06-27 22:20:02,947 INFO L125 PetriNetUnfolderBase]: For 135088/135088 co-relation queries the response was YES. [2024-06-27 22:20:02,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24183 conditions, 3406 events. 1840/3406 cut-off events. For 135088/135088 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 22017 event pairs, 314 based on Foata normal form. 3/3291 useless extension candidates. Maximal degree in co-relation 24049. Up to 2132 conditions per place. [2024-06-27 22:20:02,993 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 471 selfloop transitions, 106 changer transitions 0/584 dead transitions. [2024-06-27 22:20:02,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 584 transitions, 10628 flow [2024-06-27 22:20:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 22:20:02,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2024-06-27 22:20:02,995 INFO L175 Difference]: Start difference. First operand has 290 places, 521 transitions, 8709 flow. Second operand 9 states and 175 transitions. [2024-06-27 22:20:02,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 584 transitions, 10628 flow [2024-06-27 22:20:03,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 584 transitions, 10326 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:03,583 INFO L231 Difference]: Finished difference. Result has 291 places, 523 transitions, 8650 flow [2024-06-27 22:20:03,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8407, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8650, PETRI_PLACES=291, PETRI_TRANSITIONS=523} [2024-06-27 22:20:03,584 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 248 predicate places. [2024-06-27 22:20:03,584 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 523 transitions, 8650 flow [2024-06-27 22:20:03,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:03,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:03,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:03,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:20:03,585 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:03,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:03,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2124407816, now seen corresponding path program 6 times [2024-06-27 22:20:03,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:03,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247327116] [2024-06-27 22:20:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:03,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247327116] [2024-06-27 22:20:04,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247327116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:04,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:04,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:04,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884552146] [2024-06-27 22:20:04,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:04,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:04,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:04,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:04,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:04,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:04,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 523 transitions, 8650 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:04,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:04,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:04,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:05,745 INFO L124 PetriNetUnfolderBase]: 1838/3403 cut-off events. [2024-06-27 22:20:05,745 INFO L125 PetriNetUnfolderBase]: For 132205/132205 co-relation queries the response was YES. [2024-06-27 22:20:05,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24127 conditions, 3403 events. 1838/3403 cut-off events. For 132205/132205 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22042 event pairs, 333 based on Foata normal form. 1/3286 useless extension candidates. Maximal degree in co-relation 23993. Up to 2317 conditions per place. [2024-06-27 22:20:05,788 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 434 selfloop transitions, 130 changer transitions 0/571 dead transitions. [2024-06-27 22:20:05,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 571 transitions, 10354 flow [2024-06-27 22:20:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:20:05,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-27 22:20:05,790 INFO L175 Difference]: Start difference. First operand has 291 places, 523 transitions, 8650 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:20:05,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 571 transitions, 10354 flow [2024-06-27 22:20:06,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 571 transitions, 10126 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:06,356 INFO L231 Difference]: Finished difference. Result has 293 places, 523 transitions, 8692 flow [2024-06-27 22:20:06,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8422, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8692, PETRI_PLACES=293, PETRI_TRANSITIONS=523} [2024-06-27 22:20:06,356 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-27 22:20:06,356 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 523 transitions, 8692 flow [2024-06-27 22:20:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:06,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:06,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:06,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:20:06,357 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:06,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2124653584, now seen corresponding path program 4 times [2024-06-27 22:20:06,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:06,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795395170] [2024-06-27 22:20:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:06,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:07,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:07,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795395170] [2024-06-27 22:20:07,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795395170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:07,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:07,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:07,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464181853] [2024-06-27 22:20:07,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:07,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:07,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:07,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:07,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:07,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:07,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 523 transitions, 8692 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:07,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:07,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:07,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:08,520 INFO L124 PetriNetUnfolderBase]: 1832/3394 cut-off events. [2024-06-27 22:20:08,520 INFO L125 PetriNetUnfolderBase]: For 133667/133667 co-relation queries the response was YES. [2024-06-27 22:20:08,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23872 conditions, 3394 events. 1832/3394 cut-off events. For 133667/133667 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21963 event pairs, 322 based on Foata normal form. 3/3279 useless extension candidates. Maximal degree in co-relation 23737. Up to 2125 conditions per place. [2024-06-27 22:20:08,559 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 452 selfloop transitions, 116 changer transitions 0/575 dead transitions. [2024-06-27 22:20:08,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 575 transitions, 10360 flow [2024-06-27 22:20:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:20:08,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:20:08,560 INFO L175 Difference]: Start difference. First operand has 293 places, 523 transitions, 8692 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:20:08,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 575 transitions, 10360 flow [2024-06-27 22:20:09,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 575 transitions, 10081 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:09,039 INFO L231 Difference]: Finished difference. Result has 294 places, 523 transitions, 8653 flow [2024-06-27 22:20:09,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8413, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8653, PETRI_PLACES=294, PETRI_TRANSITIONS=523} [2024-06-27 22:20:09,040 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 251 predicate places. [2024-06-27 22:20:09,040 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 523 transitions, 8653 flow [2024-06-27 22:20:09,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:09,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:09,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:09,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:20:09,040 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:09,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash -199853728, now seen corresponding path program 1 times [2024-06-27 22:20:09,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:09,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194881047] [2024-06-27 22:20:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:09,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:10,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:10,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194881047] [2024-06-27 22:20:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194881047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:10,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34088342] [2024-06-27 22:20:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:10,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:10,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:10,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:10,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:10,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:10,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 523 transitions, 8653 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:10,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:10,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:10,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:11,467 INFO L124 PetriNetUnfolderBase]: 1733/3289 cut-off events. [2024-06-27 22:20:11,467 INFO L125 PetriNetUnfolderBase]: For 135804/135863 co-relation queries the response was YES. [2024-06-27 22:20:11,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23062 conditions, 3289 events. 1733/3289 cut-off events. For 135804/135863 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 21775 event pairs, 299 based on Foata normal form. 46/3213 useless extension candidates. Maximal degree in co-relation 22926. Up to 2506 conditions per place. [2024-06-27 22:20:11,502 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 453 selfloop transitions, 21 changer transitions 0/552 dead transitions. [2024-06-27 22:20:11,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 552 transitions, 9799 flow [2024-06-27 22:20:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:20:11,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 22:20:11,503 INFO L175 Difference]: Start difference. First operand has 294 places, 523 transitions, 8653 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:20:11,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 552 transitions, 9799 flow [2024-06-27 22:20:11,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 552 transitions, 9551 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:11,918 INFO L231 Difference]: Finished difference. Result has 297 places, 528 transitions, 8530 flow [2024-06-27 22:20:11,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8405, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8530, PETRI_PLACES=297, PETRI_TRANSITIONS=528} [2024-06-27 22:20:11,919 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 254 predicate places. [2024-06-27 22:20:11,919 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 528 transitions, 8530 flow [2024-06-27 22:20:11,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:11,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:11,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:11,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:20:11,920 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:11,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash -812081126, now seen corresponding path program 5 times [2024-06-27 22:20:11,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:11,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075184038] [2024-06-27 22:20:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:11,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:13,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:13,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075184038] [2024-06-27 22:20:13,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075184038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:13,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:13,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:13,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664271766] [2024-06-27 22:20:13,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:13,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:13,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:13,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 528 transitions, 8530 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:13,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:13,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:13,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:14,096 INFO L124 PetriNetUnfolderBase]: 1926/3550 cut-off events. [2024-06-27 22:20:14,097 INFO L125 PetriNetUnfolderBase]: For 147542/147542 co-relation queries the response was YES. [2024-06-27 22:20:14,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24946 conditions, 3550 events. 1926/3550 cut-off events. For 147542/147542 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 23122 event pairs, 352 based on Foata normal form. 3/3431 useless extension candidates. Maximal degree in co-relation 24808. Up to 2789 conditions per place. [2024-06-27 22:20:14,139 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 530 selfloop transitions, 39 changer transitions 0/576 dead transitions. [2024-06-27 22:20:14,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 576 transitions, 10312 flow [2024-06-27 22:20:14,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:14,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:20:14,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:20:14,140 INFO L175 Difference]: Start difference. First operand has 297 places, 528 transitions, 8530 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:20:14,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 576 transitions, 10312 flow [2024-06-27 22:20:14,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 576 transitions, 10206 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:14,787 INFO L231 Difference]: Finished difference. Result has 298 places, 532 transitions, 8562 flow [2024-06-27 22:20:14,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8424, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8562, PETRI_PLACES=298, PETRI_TRANSITIONS=532} [2024-06-27 22:20:14,788 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 255 predicate places. [2024-06-27 22:20:14,788 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 532 transitions, 8562 flow [2024-06-27 22:20:14,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:14,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:14,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:14,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:20:14,789 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:14,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:14,789 INFO L85 PathProgramCache]: Analyzing trace with hash -812081374, now seen corresponding path program 7 times [2024-06-27 22:20:14,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:14,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352188507] [2024-06-27 22:20:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:14,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:15,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352188507] [2024-06-27 22:20:15,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352188507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:15,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:15,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89409884] [2024-06-27 22:20:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:15,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:15,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:15,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:16,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:16,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 532 transitions, 8562 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:16,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:16,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:16,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:16,909 INFO L124 PetriNetUnfolderBase]: 1937/3579 cut-off events. [2024-06-27 22:20:16,909 INFO L125 PetriNetUnfolderBase]: For 148302/148302 co-relation queries the response was YES. [2024-06-27 22:20:16,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25141 conditions, 3579 events. 1937/3579 cut-off events. For 148302/148302 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 23419 event pairs, 358 based on Foata normal form. 1/3455 useless extension candidates. Maximal degree in co-relation 25004. Up to 2986 conditions per place. [2024-06-27 22:20:16,953 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 525 selfloop transitions, 29 changer transitions 0/561 dead transitions. [2024-06-27 22:20:16,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 561 transitions, 9871 flow [2024-06-27 22:20:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 22:20:16,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301994301994302 [2024-06-27 22:20:16,954 INFO L175 Difference]: Start difference. First operand has 298 places, 532 transitions, 8562 flow. Second operand 9 states and 151 transitions. [2024-06-27 22:20:16,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 561 transitions, 9871 flow [2024-06-27 22:20:17,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 561 transitions, 9762 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:17,619 INFO L231 Difference]: Finished difference. Result has 302 places, 534 transitions, 8557 flow [2024-06-27 22:20:17,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8463, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8557, PETRI_PLACES=302, PETRI_TRANSITIONS=534} [2024-06-27 22:20:17,619 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 259 predicate places. [2024-06-27 22:20:17,619 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 534 transitions, 8557 flow [2024-06-27 22:20:17,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:17,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:17,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:17,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:20:17,620 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:17,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:17,620 INFO L85 PathProgramCache]: Analyzing trace with hash 578538556, now seen corresponding path program 6 times [2024-06-27 22:20:17,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:17,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730910438] [2024-06-27 22:20:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:17,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:18,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:18,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730910438] [2024-06-27 22:20:18,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730910438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:18,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:18,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396089540] [2024-06-27 22:20:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:18,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:18,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:18,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 534 transitions, 8557 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:18,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:18,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:18,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:19,845 INFO L124 PetriNetUnfolderBase]: 1970/3629 cut-off events. [2024-06-27 22:20:19,845 INFO L125 PetriNetUnfolderBase]: For 153458/153458 co-relation queries the response was YES. [2024-06-27 22:20:19,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25207 conditions, 3629 events. 1970/3629 cut-off events. For 153458/153458 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23732 event pairs, 342 based on Foata normal form. 3/3508 useless extension candidates. Maximal degree in co-relation 25068. Up to 2640 conditions per place. [2024-06-27 22:20:19,882 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 511 selfloop transitions, 68 changer transitions 0/586 dead transitions. [2024-06-27 22:20:19,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 586 transitions, 10413 flow [2024-06-27 22:20:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:20:19,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-27 22:20:19,883 INFO L175 Difference]: Start difference. First operand has 302 places, 534 transitions, 8557 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:20:19,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 586 transitions, 10413 flow [2024-06-27 22:20:20,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 586 transitions, 10357 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:20,488 INFO L231 Difference]: Finished difference. Result has 304 places, 536 transitions, 8673 flow [2024-06-27 22:20:20,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8501, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8673, PETRI_PLACES=304, PETRI_TRANSITIONS=536} [2024-06-27 22:20:20,489 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-27 22:20:20,489 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 536 transitions, 8673 flow [2024-06-27 22:20:20,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:20,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:20,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:20,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:20:20,489 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:20,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash -231753516, now seen corresponding path program 8 times [2024-06-27 22:20:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:20,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809145265] [2024-06-27 22:20:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:20,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:21,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:21,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809145265] [2024-06-27 22:20:21,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809145265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:21,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:21,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:21,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939154181] [2024-06-27 22:20:21,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:21,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:21,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:21,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:21,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 536 transitions, 8673 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:21,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:21,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:21,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:22,634 INFO L124 PetriNetUnfolderBase]: 1994/3690 cut-off events. [2024-06-27 22:20:22,634 INFO L125 PetriNetUnfolderBase]: For 157219/157219 co-relation queries the response was YES. [2024-06-27 22:20:22,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25834 conditions, 3690 events. 1994/3690 cut-off events. For 157219/157219 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24352 event pairs, 362 based on Foata normal form. 1/3561 useless extension candidates. Maximal degree in co-relation 25694. Up to 2925 conditions per place. [2024-06-27 22:20:22,682 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 510 selfloop transitions, 64 changer transitions 0/581 dead transitions. [2024-06-27 22:20:22,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 581 transitions, 10496 flow [2024-06-27 22:20:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:20:22,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2024-06-27 22:20:22,683 INFO L175 Difference]: Start difference. First operand has 304 places, 536 transitions, 8673 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:20:22,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 581 transitions, 10496 flow [2024-06-27 22:20:23,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 581 transitions, 10262 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:23,432 INFO L231 Difference]: Finished difference. Result has 306 places, 541 transitions, 8683 flow [2024-06-27 22:20:23,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8439, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8683, PETRI_PLACES=306, PETRI_TRANSITIONS=541} [2024-06-27 22:20:23,433 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 263 predicate places. [2024-06-27 22:20:23,433 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 541 transitions, 8683 flow [2024-06-27 22:20:23,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:23,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:23,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:23,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:20:23,433 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:23,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:23,433 INFO L85 PathProgramCache]: Analyzing trace with hash -108068618, now seen corresponding path program 2 times [2024-06-27 22:20:23,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:23,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388446406] [2024-06-27 22:20:23,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:23,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:24,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:24,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388446406] [2024-06-27 22:20:24,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388446406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:24,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:24,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:24,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101487670] [2024-06-27 22:20:24,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:24,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:24,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:24,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:24,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:24,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:24,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 541 transitions, 8683 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:24,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:24,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:24,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:25,965 INFO L124 PetriNetUnfolderBase]: 1859/3547 cut-off events. [2024-06-27 22:20:25,966 INFO L125 PetriNetUnfolderBase]: For 157104/157163 co-relation queries the response was YES. [2024-06-27 22:20:25,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24415 conditions, 3547 events. 1859/3547 cut-off events. For 157104/157163 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 24043 event pairs, 318 based on Foata normal form. 46/3458 useless extension candidates. Maximal degree in co-relation 24273. Up to 2648 conditions per place. [2024-06-27 22:20:26,004 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 466 selfloop transitions, 28 changer transitions 0/575 dead transitions. [2024-06-27 22:20:26,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 575 transitions, 9901 flow [2024-06-27 22:20:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:20:26,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:20:26,005 INFO L175 Difference]: Start difference. First operand has 306 places, 541 transitions, 8683 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:20:26,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 575 transitions, 9901 flow [2024-06-27 22:20:26,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 575 transitions, 9684 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:26,656 INFO L231 Difference]: Finished difference. Result has 310 places, 546 transitions, 8583 flow [2024-06-27 22:20:26,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8466, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8583, PETRI_PLACES=310, PETRI_TRANSITIONS=546} [2024-06-27 22:20:26,656 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2024-06-27 22:20:26,656 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 546 transitions, 8583 flow [2024-06-27 22:20:26,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:26,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:26,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:26,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:20:26,657 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:26,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:26,657 INFO L85 PathProgramCache]: Analyzing trace with hash -368944986, now seen corresponding path program 9 times [2024-06-27 22:20:26,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:26,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503509981] [2024-06-27 22:20:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:27,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:27,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503509981] [2024-06-27 22:20:27,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503509981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:27,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:27,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:27,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16872877] [2024-06-27 22:20:27,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:27,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:27,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:27,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:27,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:27,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:27,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 546 transitions, 8583 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:27,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:27,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:27,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:28,865 INFO L124 PetriNetUnfolderBase]: 1999/3702 cut-off events. [2024-06-27 22:20:28,866 INFO L125 PetriNetUnfolderBase]: For 153654/153654 co-relation queries the response was YES. [2024-06-27 22:20:28,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25627 conditions, 3702 events. 1999/3702 cut-off events. For 153654/153654 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24482 event pairs, 343 based on Foata normal form. 1/3572 useless extension candidates. Maximal degree in co-relation 25481. Up to 2934 conditions per place. [2024-06-27 22:20:28,913 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 500 selfloop transitions, 72 changer transitions 0/579 dead transitions. [2024-06-27 22:20:28,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 579 transitions, 10121 flow [2024-06-27 22:20:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:20:28,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2024-06-27 22:20:28,914 INFO L175 Difference]: Start difference. First operand has 310 places, 546 transitions, 8583 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:20:28,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 579 transitions, 10121 flow [2024-06-27 22:20:29,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 579 transitions, 10030 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:29,671 INFO L231 Difference]: Finished difference. Result has 312 places, 546 transitions, 8645 flow [2024-06-27 22:20:29,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8492, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8645, PETRI_PLACES=312, PETRI_TRANSITIONS=546} [2024-06-27 22:20:29,672 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 269 predicate places. [2024-06-27 22:20:29,672 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 546 transitions, 8645 flow [2024-06-27 22:20:29,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:29,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:29,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:29,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:20:29,672 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:29,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash -431895858, now seen corresponding path program 7 times [2024-06-27 22:20:29,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:29,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000700562] [2024-06-27 22:20:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:29,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:30,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:30,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000700562] [2024-06-27 22:20:30,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000700562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:30,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:30,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:30,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361843499] [2024-06-27 22:20:30,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:30,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:30,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:30,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:30,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:30,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 546 transitions, 8645 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:30,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:30,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:30,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:31,875 INFO L124 PetriNetUnfolderBase]: 2032/3757 cut-off events. [2024-06-27 22:20:31,876 INFO L125 PetriNetUnfolderBase]: For 163083/163083 co-relation queries the response was YES. [2024-06-27 22:20:31,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26011 conditions, 3757 events. 2032/3757 cut-off events. For 163083/163083 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24876 event pairs, 338 based on Foata normal form. 3/3628 useless extension candidates. Maximal degree in co-relation 25864. Up to 2714 conditions per place. [2024-06-27 22:20:31,924 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 545 selfloop transitions, 60 changer transitions 0/612 dead transitions. [2024-06-27 22:20:31,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 612 transitions, 10733 flow [2024-06-27 22:20:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:31,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:20:31,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-27 22:20:31,925 INFO L175 Difference]: Start difference. First operand has 312 places, 546 transitions, 8645 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:20:31,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 612 transitions, 10733 flow [2024-06-27 22:20:32,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 612 transitions, 10519 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:32,697 INFO L231 Difference]: Finished difference. Result has 313 places, 548 transitions, 8583 flow [2024-06-27 22:20:32,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8431, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8583, PETRI_PLACES=313, PETRI_TRANSITIONS=548} [2024-06-27 22:20:32,698 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 270 predicate places. [2024-06-27 22:20:32,698 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 548 transitions, 8583 flow [2024-06-27 22:20:32,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:32,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:32,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:32,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:20:32,698 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:32,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1125124210, now seen corresponding path program 5 times [2024-06-27 22:20:32,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:32,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975757875] [2024-06-27 22:20:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:32,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975757875] [2024-06-27 22:20:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975757875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:33,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:33,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:33,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215645824] [2024-06-27 22:20:33,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:33,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:33,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:33,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:34,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:34,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 548 transitions, 8583 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:34,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:34,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:34,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:34,891 INFO L124 PetriNetUnfolderBase]: 1942/3674 cut-off events. [2024-06-27 22:20:34,892 INFO L125 PetriNetUnfolderBase]: For 159392/159392 co-relation queries the response was YES. [2024-06-27 22:20:34,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25384 conditions, 3674 events. 1942/3674 cut-off events. For 159392/159392 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 24836 event pairs, 337 based on Foata normal form. 1/3541 useless extension candidates. Maximal degree in co-relation 25236. Up to 2832 conditions per place. [2024-06-27 22:20:34,935 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 472 selfloop transitions, 36 changer transitions 0/574 dead transitions. [2024-06-27 22:20:34,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 574 transitions, 9772 flow [2024-06-27 22:20:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:20:34,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45584045584045585 [2024-06-27 22:20:34,936 INFO L175 Difference]: Start difference. First operand has 313 places, 548 transitions, 8583 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:20:34,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 574 transitions, 9772 flow [2024-06-27 22:20:35,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 574 transitions, 9584 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:35,734 INFO L231 Difference]: Finished difference. Result has 316 places, 549 transitions, 8502 flow [2024-06-27 22:20:35,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8395, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8502, PETRI_PLACES=316, PETRI_TRANSITIONS=549} [2024-06-27 22:20:35,735 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 273 predicate places. [2024-06-27 22:20:35,735 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 549 transitions, 8502 flow [2024-06-27 22:20:35,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:35,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:35,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:35,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:20:35,736 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:35,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash -812072756, now seen corresponding path program 8 times [2024-06-27 22:20:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:35,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744691718] [2024-06-27 22:20:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:35,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:36,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:36,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744691718] [2024-06-27 22:20:36,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744691718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:36,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:36,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:36,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263589940] [2024-06-27 22:20:36,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:36,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:36,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:36,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:36,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:36,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:36,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 549 transitions, 8502 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:36,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:36,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:36,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:37,978 INFO L124 PetriNetUnfolderBase]: 2063/3814 cut-off events. [2024-06-27 22:20:37,978 INFO L125 PetriNetUnfolderBase]: For 166531/166531 co-relation queries the response was YES. [2024-06-27 22:20:38,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25888 conditions, 3814 events. 2063/3814 cut-off events. For 166531/166531 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 25360 event pairs, 356 based on Foata normal form. 3/3682 useless extension candidates. Maximal degree in co-relation 25739. Up to 2979 conditions per place. [2024-06-27 22:20:38,025 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 553 selfloop transitions, 37 changer transitions 0/597 dead transitions. [2024-06-27 22:20:38,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 597 transitions, 10218 flow [2024-06-27 22:20:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:20:38,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:20:38,026 INFO L175 Difference]: Start difference. First operand has 316 places, 549 transitions, 8502 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:20:38,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 597 transitions, 10218 flow [2024-06-27 22:20:38,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 597 transitions, 9999 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 22:20:38,800 INFO L231 Difference]: Finished difference. Result has 315 places, 551 transitions, 8382 flow [2024-06-27 22:20:38,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8283, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8382, PETRI_PLACES=315, PETRI_TRANSITIONS=551} [2024-06-27 22:20:38,801 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-27 22:20:38,801 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 551 transitions, 8382 flow [2024-06-27 22:20:38,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:38,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:38,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:38,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:20:38,801 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:38,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:38,801 INFO L85 PathProgramCache]: Analyzing trace with hash -231522876, now seen corresponding path program 10 times [2024-06-27 22:20:38,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:38,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795307677] [2024-06-27 22:20:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:38,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:40,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:40,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795307677] [2024-06-27 22:20:40,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795307677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:40,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:40,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:40,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218238334] [2024-06-27 22:20:40,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:40,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:40,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:40,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:40,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 551 transitions, 8382 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:40,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:40,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:40,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:40,968 INFO L124 PetriNetUnfolderBase]: 2061/3822 cut-off events. [2024-06-27 22:20:40,968 INFO L125 PetriNetUnfolderBase]: For 162180/162180 co-relation queries the response was YES. [2024-06-27 22:20:41,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25805 conditions, 3822 events. 2061/3822 cut-off events. For 162180/162180 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 25500 event pairs, 361 based on Foata normal form. 1/3686 useless extension candidates. Maximal degree in co-relation 25656. Up to 3031 conditions per place. [2024-06-27 22:20:41,016 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 525 selfloop transitions, 62 changer transitions 0/594 dead transitions. [2024-06-27 22:20:41,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 594 transitions, 9952 flow [2024-06-27 22:20:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:20:41,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45014245014245013 [2024-06-27 22:20:41,017 INFO L175 Difference]: Start difference. First operand has 315 places, 551 transitions, 8382 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:20:41,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 594 transitions, 9952 flow [2024-06-27 22:20:41,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 594 transitions, 9891 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:41,909 INFO L231 Difference]: Finished difference. Result has 318 places, 551 transitions, 8453 flow [2024-06-27 22:20:41,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8321, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8453, PETRI_PLACES=318, PETRI_TRANSITIONS=551} [2024-06-27 22:20:41,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-27 22:20:41,910 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 551 transitions, 8453 flow [2024-06-27 22:20:41,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:41,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:41,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:41,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:20:41,910 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:41,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:41,911 INFO L85 PathProgramCache]: Analyzing trace with hash -431887488, now seen corresponding path program 9 times [2024-06-27 22:20:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:41,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095400141] [2024-06-27 22:20:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:41,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095400141] [2024-06-27 22:20:43,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095400141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:43,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:43,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:43,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752364605] [2024-06-27 22:20:43,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:43,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:43,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:43,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:43,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:43,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:43,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 551 transitions, 8453 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:43,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:43,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:43,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:44,385 INFO L124 PetriNetUnfolderBase]: 2055/3805 cut-off events. [2024-06-27 22:20:44,385 INFO L125 PetriNetUnfolderBase]: For 163867/163867 co-relation queries the response was YES. [2024-06-27 22:20:44,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25595 conditions, 3805 events. 2055/3805 cut-off events. For 163867/163867 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 25322 event pairs, 349 based on Foata normal form. 3/3673 useless extension candidates. Maximal degree in co-relation 25445. Up to 2728 conditions per place. [2024-06-27 22:20:44,431 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 533 selfloop transitions, 66 changer transitions 0/606 dead transitions. [2024-06-27 22:20:44,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 606 transitions, 10282 flow [2024-06-27 22:20:44,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:44,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:20:44,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-27 22:20:44,432 INFO L175 Difference]: Start difference. First operand has 318 places, 551 transitions, 8453 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:20:44,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 606 transitions, 10282 flow [2024-06-27 22:20:45,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 606 transitions, 10073 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 22:20:45,264 INFO L231 Difference]: Finished difference. Result has 317 places, 551 transitions, 8383 flow [2024-06-27 22:20:45,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8244, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8383, PETRI_PLACES=317, PETRI_TRANSITIONS=551} [2024-06-27 22:20:45,265 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 274 predicate places. [2024-06-27 22:20:45,265 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 551 transitions, 8383 flow [2024-06-27 22:20:45,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:45,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:45,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:45,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:20:45,265 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:45,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash -801059696, now seen corresponding path program 10 times [2024-06-27 22:20:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:45,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701456076] [2024-06-27 22:20:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:45,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:46,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:46,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701456076] [2024-06-27 22:20:46,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701456076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:46,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:46,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493826072] [2024-06-27 22:20:46,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:46,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:46,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:46,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:46,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 551 transitions, 8383 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:46,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:46,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:46,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:47,394 INFO L124 PetriNetUnfolderBase]: 2049/3801 cut-off events. [2024-06-27 22:20:47,395 INFO L125 PetriNetUnfolderBase]: For 159395/159395 co-relation queries the response was YES. [2024-06-27 22:20:47,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25413 conditions, 3801 events. 2049/3801 cut-off events. For 159395/159395 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25358 event pairs, 363 based on Foata normal form. 3/3667 useless extension candidates. Maximal degree in co-relation 25263. Up to 3114 conditions per place. [2024-06-27 22:20:47,441 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 551 selfloop transitions, 23 changer transitions 0/581 dead transitions. [2024-06-27 22:20:47,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 581 transitions, 9747 flow [2024-06-27 22:20:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:20:47,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43874643874643876 [2024-06-27 22:20:47,442 INFO L175 Difference]: Start difference. First operand has 317 places, 551 transitions, 8383 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:20:47,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 581 transitions, 9747 flow [2024-06-27 22:20:48,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 581 transitions, 9598 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:48,207 INFO L231 Difference]: Finished difference. Result has 318 places, 551 transitions, 8288 flow [2024-06-27 22:20:48,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8234, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8288, PETRI_PLACES=318, PETRI_TRANSITIONS=551} [2024-06-27 22:20:48,207 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-27 22:20:48,207 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 551 transitions, 8288 flow [2024-06-27 22:20:48,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:48,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:48,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:48,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:20:48,208 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:48,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:48,208 INFO L85 PathProgramCache]: Analyzing trace with hash -172833766, now seen corresponding path program 6 times [2024-06-27 22:20:48,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:48,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592925476] [2024-06-27 22:20:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:48,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:49,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:49,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592925476] [2024-06-27 22:20:49,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592925476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:49,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:49,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:49,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201042889] [2024-06-27 22:20:49,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:49,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:49,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:49,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:49,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:49,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:49,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 551 transitions, 8288 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:49,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:49,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:49,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:50,584 INFO L124 PetriNetUnfolderBase]: 2001/3793 cut-off events. [2024-06-27 22:20:50,584 INFO L125 PetriNetUnfolderBase]: For 160883/160883 co-relation queries the response was YES. [2024-06-27 22:20:50,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25154 conditions, 3793 events. 2001/3793 cut-off events. For 160883/160883 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25814 event pairs, 266 based on Foata normal form. 1/3657 useless extension candidates. Maximal degree in co-relation 25003. Up to 2830 conditions per place. [2024-06-27 22:20:50,631 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 461 selfloop transitions, 93 changer transitions 0/620 dead transitions. [2024-06-27 22:20:50,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 620 transitions, 10172 flow [2024-06-27 22:20:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:20:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:20:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 22:20:50,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47785547785547783 [2024-06-27 22:20:50,632 INFO L175 Difference]: Start difference. First operand has 318 places, 551 transitions, 8288 flow. Second operand 11 states and 205 transitions. [2024-06-27 22:20:50,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 620 transitions, 10172 flow [2024-06-27 22:20:51,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 620 transitions, 10092 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:20:51,441 INFO L231 Difference]: Finished difference. Result has 322 places, 579 transitions, 8841 flow [2024-06-27 22:20:51,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8208, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8841, PETRI_PLACES=322, PETRI_TRANSITIONS=579} [2024-06-27 22:20:51,442 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-06-27 22:20:51,442 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 579 transitions, 8841 flow [2024-06-27 22:20:51,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:51,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:51,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:51,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:20:51,442 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:51,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash 195797248, now seen corresponding path program 11 times [2024-06-27 22:20:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:51,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117779461] [2024-06-27 22:20:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:51,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:52,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:52,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117779461] [2024-06-27 22:20:52,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117779461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:52,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:52,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:52,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636859018] [2024-06-27 22:20:52,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:52,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:52,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:52,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:52,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:20:52,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 579 transitions, 8841 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:52,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:52,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:20:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:54,137 INFO L124 PetriNetUnfolderBase]: 2148/3967 cut-off events. [2024-06-27 22:20:54,137 INFO L125 PetriNetUnfolderBase]: For 168924/168924 co-relation queries the response was YES. [2024-06-27 22:20:54,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27008 conditions, 3967 events. 2148/3967 cut-off events. For 168924/168924 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 26570 event pairs, 285 based on Foata normal form. 1/3831 useless extension candidates. Maximal degree in co-relation 26855. Up to 2659 conditions per place. [2024-06-27 22:20:54,188 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 328 selfloop transitions, 326 changer transitions 0/661 dead transitions. [2024-06-27 22:20:54,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 661 transitions, 11009 flow [2024-06-27 22:20:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:20:54,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 22:20:54,190 INFO L175 Difference]: Start difference. First operand has 322 places, 579 transitions, 8841 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:20:54,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 661 transitions, 11009 flow [2024-06-27 22:20:55,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 661 transitions, 10775 flow, removed 109 selfloop flow, removed 2 redundant places. [2024-06-27 22:20:55,044 INFO L231 Difference]: Finished difference. Result has 331 places, 631 transitions, 10014 flow [2024-06-27 22:20:55,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8607, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10014, PETRI_PLACES=331, PETRI_TRANSITIONS=631} [2024-06-27 22:20:55,045 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 288 predicate places. [2024-06-27 22:20:55,045 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 631 transitions, 10014 flow [2024-06-27 22:20:55,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:55,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:55,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:55,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:20:55,045 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:55,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:55,046 INFO L85 PathProgramCache]: Analyzing trace with hash 173506822, now seen corresponding path program 7 times [2024-06-27 22:20:55,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:55,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209018213] [2024-06-27 22:20:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:55,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:56,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:56,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209018213] [2024-06-27 22:20:56,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209018213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:56,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:56,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:56,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567689839] [2024-06-27 22:20:56,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:56,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:56,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:56,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:56,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 631 transitions, 10014 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:56,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:56,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:56,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:57,731 INFO L124 PetriNetUnfolderBase]: 2084/3937 cut-off events. [2024-06-27 22:20:57,731 INFO L125 PetriNetUnfolderBase]: For 177550/177550 co-relation queries the response was YES. [2024-06-27 22:20:57,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27733 conditions, 3937 events. 2084/3937 cut-off events. For 177550/177550 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 26949 event pairs, 268 based on Foata normal form. 1/3801 useless extension candidates. Maximal degree in co-relation 27577. Up to 2950 conditions per place. [2024-06-27 22:20:57,871 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 502 selfloop transitions, 94 changer transitions 0/686 dead transitions. [2024-06-27 22:20:57,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 686 transitions, 11644 flow [2024-06-27 22:20:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:20:57,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 22:20:57,873 INFO L175 Difference]: Start difference. First operand has 331 places, 631 transitions, 10014 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:20:57,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 686 transitions, 11644 flow [2024-06-27 22:20:58,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 686 transitions, 11208 flow, removed 114 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:58,690 INFO L231 Difference]: Finished difference. Result has 337 places, 654 transitions, 10079 flow [2024-06-27 22:20:58,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9578, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10079, PETRI_PLACES=337, PETRI_TRANSITIONS=654} [2024-06-27 22:20:58,691 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 294 predicate places. [2024-06-27 22:20:58,691 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 654 transitions, 10079 flow [2024-06-27 22:20:58,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:58,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:58,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:58,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:20:58,692 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:58,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:58,693 INFO L85 PathProgramCache]: Analyzing trace with hash 195797062, now seen corresponding path program 8 times [2024-06-27 22:20:58,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:58,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884609928] [2024-06-27 22:20:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:58,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:00,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:00,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884609928] [2024-06-27 22:21:00,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884609928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:00,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:00,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:00,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920576333] [2024-06-27 22:21:00,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:00,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:00,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:00,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 654 transitions, 10079 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:00,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:00,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:00,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:01,395 INFO L124 PetriNetUnfolderBase]: 2117/3983 cut-off events. [2024-06-27 22:21:01,395 INFO L125 PetriNetUnfolderBase]: For 178780/178780 co-relation queries the response was YES. [2024-06-27 22:21:01,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27922 conditions, 3983 events. 2117/3983 cut-off events. For 178780/178780 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27227 event pairs, 253 based on Foata normal form. 1/3847 useless extension candidates. Maximal degree in co-relation 27763. Up to 2624 conditions per place. [2024-06-27 22:21:01,446 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 356 selfloop transitions, 267 changer transitions 0/713 dead transitions. [2024-06-27 22:21:01,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 713 transitions, 11980 flow [2024-06-27 22:21:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 22:21:01,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:21:01,448 INFO L175 Difference]: Start difference. First operand has 337 places, 654 transitions, 10079 flow. Second operand 10 states and 190 transitions. [2024-06-27 22:21:01,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 713 transitions, 11980 flow [2024-06-27 22:21:02,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 713 transitions, 11809 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:02,166 INFO L231 Difference]: Finished difference. Result has 343 places, 683 transitions, 10920 flow [2024-06-27 22:21:02,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9908, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10920, PETRI_PLACES=343, PETRI_TRANSITIONS=683} [2024-06-27 22:21:02,167 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 300 predicate places. [2024-06-27 22:21:02,167 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 683 transitions, 10920 flow [2024-06-27 22:21:02,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:02,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:02,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:02,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:21:02,167 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:02,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash -210779754, now seen corresponding path program 9 times [2024-06-27 22:21:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:02,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879010743] [2024-06-27 22:21:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:02,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:03,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:03,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879010743] [2024-06-27 22:21:03,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879010743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:03,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:03,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:03,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531417100] [2024-06-27 22:21:03,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:03,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:03,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:03,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:03,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:04,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:04,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 683 transitions, 10920 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:04,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:04,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:04,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:05,292 INFO L124 PetriNetUnfolderBase]: 2161/4060 cut-off events. [2024-06-27 22:21:05,292 INFO L125 PetriNetUnfolderBase]: For 188161/188161 co-relation queries the response was YES. [2024-06-27 22:21:05,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29335 conditions, 4060 events. 2161/4060 cut-off events. For 188161/188161 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27839 event pairs, 275 based on Foata normal form. 1/3924 useless extension candidates. Maximal degree in co-relation 29174. Up to 3056 conditions per place. [2024-06-27 22:21:05,347 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 544 selfloop transitions, 105 changer transitions 0/739 dead transitions. [2024-06-27 22:21:05,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 739 transitions, 12764 flow [2024-06-27 22:21:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:21:05,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-27 22:21:05,348 INFO L175 Difference]: Start difference. First operand has 343 places, 683 transitions, 10920 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:21:05,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 739 transitions, 12764 flow [2024-06-27 22:21:06,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 739 transitions, 12460 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:06,323 INFO L231 Difference]: Finished difference. Result has 348 places, 711 transitions, 11305 flow [2024-06-27 22:21:06,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10630, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11305, PETRI_PLACES=348, PETRI_TRANSITIONS=711} [2024-06-27 22:21:06,324 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-27 22:21:06,324 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 711 transitions, 11305 flow [2024-06-27 22:21:06,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:06,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:06,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:06,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:21:06,324 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:06,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:06,324 INFO L85 PathProgramCache]: Analyzing trace with hash 337917642, now seen corresponding path program 12 times [2024-06-27 22:21:06,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:06,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377928705] [2024-06-27 22:21:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:06,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:07,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:07,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377928705] [2024-06-27 22:21:07,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377928705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:07,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:07,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:07,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284412451] [2024-06-27 22:21:07,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:07,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:07,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:07,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:07,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:08,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:21:08,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 711 transitions, 11305 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:08,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:08,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:21:08,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:09,529 INFO L124 PetriNetUnfolderBase]: 2332/4266 cut-off events. [2024-06-27 22:21:09,529 INFO L125 PetriNetUnfolderBase]: For 192871/192871 co-relation queries the response was YES. [2024-06-27 22:21:09,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30870 conditions, 4266 events. 2332/4266 cut-off events. For 192871/192871 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 28780 event pairs, 285 based on Foata normal form. 1/4130 useless extension candidates. Maximal degree in co-relation 30707. Up to 2916 conditions per place. [2024-06-27 22:21:09,576 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 430 selfloop transitions, 339 changer transitions 0/776 dead transitions. [2024-06-27 22:21:09,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 776 transitions, 13652 flow [2024-06-27 22:21:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 22:21:09,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2024-06-27 22:21:09,577 INFO L175 Difference]: Start difference. First operand has 348 places, 711 transitions, 11305 flow. Second operand 9 states and 175 transitions. [2024-06-27 22:21:09,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 776 transitions, 13652 flow [2024-06-27 22:21:10,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 776 transitions, 13521 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 22:21:10,500 INFO L231 Difference]: Finished difference. Result has 355 places, 747 transitions, 12343 flow [2024-06-27 22:21:10,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11174, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12343, PETRI_PLACES=355, PETRI_TRANSITIONS=747} [2024-06-27 22:21:10,500 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 312 predicate places. [2024-06-27 22:21:10,500 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 747 transitions, 12343 flow [2024-06-27 22:21:10,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:10,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:10,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:10,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:21:10,501 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:10,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash -210659784, now seen corresponding path program 10 times [2024-06-27 22:21:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:10,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995522584] [2024-06-27 22:21:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:10,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:12,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:12,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995522584] [2024-06-27 22:21:12,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995522584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:12,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:12,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:12,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595045216] [2024-06-27 22:21:12,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:12,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:12,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:12,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:12,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:12,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:12,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 747 transitions, 12343 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:12,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:12,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:12,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:13,611 INFO L124 PetriNetUnfolderBase]: 2266/4225 cut-off events. [2024-06-27 22:21:13,612 INFO L125 PetriNetUnfolderBase]: For 203640/203642 co-relation queries the response was YES. [2024-06-27 22:21:13,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31502 conditions, 4225 events. 2266/4225 cut-off events. For 203640/203642 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 29041 event pairs, 277 based on Foata normal form. 1/4089 useless extension candidates. Maximal degree in co-relation 31337. Up to 2796 conditions per place. [2024-06-27 22:21:13,671 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 396 selfloop transitions, 300 changer transitions 0/801 dead transitions. [2024-06-27 22:21:13,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 801 transitions, 14480 flow [2024-06-27 22:21:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:13,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-27 22:21:13,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 22:21:13,672 INFO L175 Difference]: Start difference. First operand has 355 places, 747 transitions, 12343 flow. Second operand 9 states and 182 transitions. [2024-06-27 22:21:13,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 801 transitions, 14480 flow [2024-06-27 22:21:14,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 801 transitions, 14097 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 22:21:14,490 INFO L231 Difference]: Finished difference. Result has 361 places, 772 transitions, 12951 flow [2024-06-27 22:21:14,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11960, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12951, PETRI_PLACES=361, PETRI_TRANSITIONS=772} [2024-06-27 22:21:14,490 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 318 predicate places. [2024-06-27 22:21:14,490 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 772 transitions, 12951 flow [2024-06-27 22:21:14,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:14,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:14,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:14,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:21:14,490 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:14,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash 481260402, now seen corresponding path program 13 times [2024-06-27 22:21:14,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:14,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570394591] [2024-06-27 22:21:14,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:14,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:16,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:16,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570394591] [2024-06-27 22:21:16,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570394591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:16,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:16,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:16,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462760889] [2024-06-27 22:21:16,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:16,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:16,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:16,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:16,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:16,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:21:16,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 772 transitions, 12951 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:16,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:16,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:21:16,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:17,625 INFO L124 PetriNetUnfolderBase]: 2402/4372 cut-off events. [2024-06-27 22:21:17,626 INFO L125 PetriNetUnfolderBase]: For 209716/209716 co-relation queries the response was YES. [2024-06-27 22:21:17,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32804 conditions, 4372 events. 2402/4372 cut-off events. For 209716/209716 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 29508 event pairs, 286 based on Foata normal form. 1/4235 useless extension candidates. Maximal degree in co-relation 32637. Up to 3014 conditions per place. [2024-06-27 22:21:17,685 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 468 selfloop transitions, 340 changer transitions 0/815 dead transitions. [2024-06-27 22:21:17,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 815 transitions, 15206 flow [2024-06-27 22:21:17,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:17,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 22:21:17,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2024-06-27 22:21:17,686 INFO L175 Difference]: Start difference. First operand has 361 places, 772 transitions, 12951 flow. Second operand 9 states and 175 transitions. [2024-06-27 22:21:17,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 815 transitions, 15206 flow [2024-06-27 22:21:18,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 815 transitions, 14817 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 22:21:18,829 INFO L231 Difference]: Finished difference. Result has 366 places, 785 transitions, 13403 flow [2024-06-27 22:21:18,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12562, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13403, PETRI_PLACES=366, PETRI_TRANSITIONS=785} [2024-06-27 22:21:18,829 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 323 predicate places. [2024-06-27 22:21:18,829 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 785 transitions, 13403 flow [2024-06-27 22:21:18,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:18,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:18,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:18,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:21:18,830 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:18,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:18,831 INFO L85 PathProgramCache]: Analyzing trace with hash -206018154, now seen corresponding path program 11 times [2024-06-27 22:21:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334753110] [2024-06-27 22:21:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:20,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:20,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334753110] [2024-06-27 22:21:20,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334753110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:20,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:20,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:20,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673990053] [2024-06-27 22:21:20,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:20,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:20,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:20,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:20,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:20,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:20,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 785 transitions, 13403 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:20,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:20,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:20,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:21,987 INFO L124 PetriNetUnfolderBase]: 2294/4266 cut-off events. [2024-06-27 22:21:21,988 INFO L125 PetriNetUnfolderBase]: For 213244/213246 co-relation queries the response was YES. [2024-06-27 22:21:22,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32148 conditions, 4266 events. 2294/4266 cut-off events. For 213244/213246 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 29309 event pairs, 276 based on Foata normal form. 1/4129 useless extension candidates. Maximal degree in co-relation 31980. Up to 2828 conditions per place. [2024-06-27 22:21:22,048 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 401 selfloop transitions, 307 changer transitions 0/818 dead transitions. [2024-06-27 22:21:22,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 818 transitions, 15216 flow [2024-06-27 22:21:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-27 22:21:22,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50997150997151 [2024-06-27 22:21:22,050 INFO L175 Difference]: Start difference. First operand has 366 places, 785 transitions, 13403 flow. Second operand 9 states and 179 transitions. [2024-06-27 22:21:22,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 818 transitions, 15216 flow [2024-06-27 22:21:23,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 818 transitions, 14610 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:23,174 INFO L231 Difference]: Finished difference. Result has 370 places, 790 transitions, 13495 flow [2024-06-27 22:21:23,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12809, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13495, PETRI_PLACES=370, PETRI_TRANSITIONS=790} [2024-06-27 22:21:23,175 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 327 predicate places. [2024-06-27 22:21:23,175 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 790 transitions, 13495 flow [2024-06-27 22:21:23,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:23,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:23,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:23,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:21:23,176 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:23,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash 458923910, now seen corresponding path program 11 times [2024-06-27 22:21:23,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:23,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115526211] [2024-06-27 22:21:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:23,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:24,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:24,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115526211] [2024-06-27 22:21:24,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115526211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:24,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:24,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:24,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513346118] [2024-06-27 22:21:24,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:24,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:24,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:24,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:24,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:24,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:21:24,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 790 transitions, 13495 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:24,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:24,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:21:24,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:26,321 INFO L124 PetriNetUnfolderBase]: 2464/4477 cut-off events. [2024-06-27 22:21:26,321 INFO L125 PetriNetUnfolderBase]: For 222224/222224 co-relation queries the response was YES. [2024-06-27 22:21:26,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33483 conditions, 4477 events. 2464/4477 cut-off events. For 222224/222224 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 30319 event pairs, 308 based on Foata normal form. 1/4341 useless extension candidates. Maximal degree in co-relation 33314. Up to 3318 conditions per place. [2024-06-27 22:21:26,388 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 643 selfloop transitions, 199 changer transitions 0/849 dead transitions. [2024-06-27 22:21:26,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 849 transitions, 15894 flow [2024-06-27 22:21:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:26,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:21:26,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:21:26,390 INFO L175 Difference]: Start difference. First operand has 370 places, 790 transitions, 13495 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:21:26,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 849 transitions, 15894 flow [2024-06-27 22:21:27,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 849 transitions, 15390 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:27,620 INFO L231 Difference]: Finished difference. Result has 376 places, 821 transitions, 13899 flow [2024-06-27 22:21:27,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12991, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13899, PETRI_PLACES=376, PETRI_TRANSITIONS=821} [2024-06-27 22:21:27,621 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-27 22:21:27,621 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 821 transitions, 13899 flow [2024-06-27 22:21:27,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:27,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:27,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:27,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:21:27,621 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:27,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash -206011458, now seen corresponding path program 14 times [2024-06-27 22:21:27,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:27,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49358079] [2024-06-27 22:21:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:27,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:29,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:29,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49358079] [2024-06-27 22:21:29,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49358079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:29,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:29,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:29,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742408312] [2024-06-27 22:21:29,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:29,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:29,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:29,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:29,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:29,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:21:29,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 821 transitions, 13899 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:29,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:29,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:21:29,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:30,901 INFO L124 PetriNetUnfolderBase]: 2462/4473 cut-off events. [2024-06-27 22:21:30,902 INFO L125 PetriNetUnfolderBase]: For 223164/223164 co-relation queries the response was YES. [2024-06-27 22:21:30,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34033 conditions, 4473 events. 2462/4473 cut-off events. For 223164/223164 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 30272 event pairs, 272 based on Foata normal form. 1/4336 useless extension candidates. Maximal degree in co-relation 33861. Up to 3105 conditions per place. [2024-06-27 22:21:30,961 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 494 selfloop transitions, 348 changer transitions 0/849 dead transitions. [2024-06-27 22:21:30,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 849 transitions, 15922 flow [2024-06-27 22:21:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:21:30,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-27 22:21:30,962 INFO L175 Difference]: Start difference. First operand has 376 places, 821 transitions, 13899 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:21:30,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 849 transitions, 15922 flow [2024-06-27 22:21:32,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 849 transitions, 15698 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:32,310 INFO L231 Difference]: Finished difference. Result has 380 places, 821 transitions, 14394 flow [2024-06-27 22:21:32,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=13685, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14394, PETRI_PLACES=380, PETRI_TRANSITIONS=821} [2024-06-27 22:21:32,311 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-27 22:21:32,311 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 821 transitions, 14394 flow [2024-06-27 22:21:32,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:32,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:32,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:32,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:21:32,311 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:32,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:32,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1074730016, now seen corresponding path program 12 times [2024-06-27 22:21:32,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:32,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188948186] [2024-06-27 22:21:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:32,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:34,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:34,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188948186] [2024-06-27 22:21:34,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188948186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:34,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:34,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:34,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380478148] [2024-06-27 22:21:34,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:34,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:34,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:34,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:34,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:34,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:34,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 821 transitions, 14394 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:34,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:34,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:34,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:35,815 INFO L124 PetriNetUnfolderBase]: 2385/4412 cut-off events. [2024-06-27 22:21:35,815 INFO L125 PetriNetUnfolderBase]: For 224691/224694 co-relation queries the response was YES. [2024-06-27 22:21:35,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33740 conditions, 4412 events. 2385/4412 cut-off events. For 224691/224694 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 30385 event pairs, 303 based on Foata normal form. 2/4276 useless extension candidates. Maximal degree in co-relation 33567. Up to 3345 conditions per place. [2024-06-27 22:21:35,878 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 645 selfloop transitions, 119 changer transitions 0/874 dead transitions. [2024-06-27 22:21:35,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 874 transitions, 16484 flow [2024-06-27 22:21:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:35,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:21:35,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-27 22:21:35,880 INFO L175 Difference]: Start difference. First operand has 380 places, 821 transitions, 14394 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:21:35,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 874 transitions, 16484 flow [2024-06-27 22:21:36,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 874 transitions, 15749 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:37,002 INFO L231 Difference]: Finished difference. Result has 382 places, 849 transitions, 14425 flow [2024-06-27 22:21:37,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=13663, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14425, PETRI_PLACES=382, PETRI_TRANSITIONS=849} [2024-06-27 22:21:37,003 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-06-27 22:21:37,003 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 849 transitions, 14425 flow [2024-06-27 22:21:37,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:37,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:37,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:37,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:21:37,004 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:37,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1074725366, now seen corresponding path program 13 times [2024-06-27 22:21:37,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:37,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715432514] [2024-06-27 22:21:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:37,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:38,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715432514] [2024-06-27 22:21:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715432514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:38,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:38,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:38,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783317105] [2024-06-27 22:21:38,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:38,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:38,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:38,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:38,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:38,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:38,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 849 transitions, 14425 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:38,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:38,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:38,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:40,472 INFO L124 PetriNetUnfolderBase]: 2436/4490 cut-off events. [2024-06-27 22:21:40,472 INFO L125 PetriNetUnfolderBase]: For 225960/225960 co-relation queries the response was YES. [2024-06-27 22:21:40,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33804 conditions, 4490 events. 2436/4490 cut-off events. For 225960/225960 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 30991 event pairs, 295 based on Foata normal form. 1/4353 useless extension candidates. Maximal degree in co-relation 33629. Up to 2985 conditions per place. [2024-06-27 22:21:40,534 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 443 selfloop transitions, 350 changer transitions 0/903 dead transitions. [2024-06-27 22:21:40,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 903 transitions, 16651 flow [2024-06-27 22:21:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-27 22:21:40,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156695156695157 [2024-06-27 22:21:40,536 INFO L175 Difference]: Start difference. First operand has 382 places, 849 transitions, 14425 flow. Second operand 9 states and 181 transitions. [2024-06-27 22:21:40,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 903 transitions, 16651 flow [2024-06-27 22:21:41,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 903 transitions, 16539 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 22:21:41,799 INFO L231 Difference]: Finished difference. Result has 390 places, 877 transitions, 15419 flow [2024-06-27 22:21:41,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=14313, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15419, PETRI_PLACES=390, PETRI_TRANSITIONS=877} [2024-06-27 22:21:41,799 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-27 22:21:41,799 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 877 transitions, 15419 flow [2024-06-27 22:21:41,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:41,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:41,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:41,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:21:41,800 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:41,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:41,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1074725180, now seen corresponding path program 15 times [2024-06-27 22:21:41,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:41,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958433423] [2024-06-27 22:21:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:41,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:43,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958433423] [2024-06-27 22:21:43,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958433423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:43,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:43,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:43,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348679540] [2024-06-27 22:21:43,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:43,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:43,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:43,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:43,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:43,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:21:43,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 877 transitions, 15419 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:43,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:43,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:21:43,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:45,233 INFO L124 PetriNetUnfolderBase]: 2600/4689 cut-off events. [2024-06-27 22:21:45,234 INFO L125 PetriNetUnfolderBase]: For 233545/233545 co-relation queries the response was YES. [2024-06-27 22:21:45,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35910 conditions, 4689 events. 2600/4689 cut-off events. For 233545/233545 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 31941 event pairs, 302 based on Foata normal form. 1/4552 useless extension candidates. Maximal degree in co-relation 35733. Up to 3294 conditions per place. [2024-06-27 22:21:45,304 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 548 selfloop transitions, 390 changer transitions 0/945 dead transitions. [2024-06-27 22:21:45,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 945 transitions, 18067 flow [2024-06-27 22:21:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:21:45,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 22:21:45,306 INFO L175 Difference]: Start difference. First operand has 390 places, 877 transitions, 15419 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:21:45,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 945 transitions, 18067 flow [2024-06-27 22:21:46,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 945 transitions, 17588 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-27 22:21:46,644 INFO L231 Difference]: Finished difference. Result has 397 places, 919 transitions, 16276 flow [2024-06-27 22:21:46,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=14940, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16276, PETRI_PLACES=397, PETRI_TRANSITIONS=919} [2024-06-27 22:21:46,645 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 354 predicate places. [2024-06-27 22:21:46,645 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 919 transitions, 16276 flow [2024-06-27 22:21:46,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:46,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:46,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:46,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:21:46,645 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:46,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:46,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1070083736, now seen corresponding path program 14 times [2024-06-27 22:21:46,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:46,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613092071] [2024-06-27 22:21:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:46,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:48,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:48,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613092071] [2024-06-27 22:21:48,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613092071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:48,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:48,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499684205] [2024-06-27 22:21:48,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:48,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:48,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:48,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:48,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 919 transitions, 16276 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:48,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:48,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:48,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:50,246 INFO L124 PetriNetUnfolderBase]: 2518/4616 cut-off events. [2024-06-27 22:21:50,246 INFO L125 PetriNetUnfolderBase]: For 241213/241213 co-relation queries the response was YES. [2024-06-27 22:21:50,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35689 conditions, 4616 events. 2518/4616 cut-off events. For 241213/241213 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 31872 event pairs, 302 based on Foata normal form. 1/4479 useless extension candidates. Maximal degree in co-relation 35509. Up to 3072 conditions per place. [2024-06-27 22:21:50,315 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 476 selfloop transitions, 354 changer transitions 0/956 dead transitions. [2024-06-27 22:21:50,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 956 transitions, 18469 flow [2024-06-27 22:21:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-27 22:21:50,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156695156695157 [2024-06-27 22:21:50,316 INFO L175 Difference]: Start difference. First operand has 397 places, 919 transitions, 16276 flow. Second operand 9 states and 181 transitions. [2024-06-27 22:21:50,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 956 transitions, 18469 flow [2024-06-27 22:21:51,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 956 transitions, 17982 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:51,428 INFO L231 Difference]: Finished difference. Result has 401 places, 928 transitions, 16663 flow [2024-06-27 22:21:51,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=15789, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16663, PETRI_PLACES=401, PETRI_TRANSITIONS=928} [2024-06-27 22:21:51,429 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 358 predicate places. [2024-06-27 22:21:51,429 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 928 transitions, 16663 flow [2024-06-27 22:21:51,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:51,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:51,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:51,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:21:51,429 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:51,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:51,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1070083550, now seen corresponding path program 16 times [2024-06-27 22:21:51,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:51,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976252822] [2024-06-27 22:21:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:51,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:53,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:53,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976252822] [2024-06-27 22:21:53,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976252822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:53,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:53,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459121122] [2024-06-27 22:21:53,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:53,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:53,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:53,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:21:53,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 928 transitions, 16663 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:53,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:53,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:21:53,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:55,038 INFO L124 PetriNetUnfolderBase]: 2650/4767 cut-off events. [2024-06-27 22:21:55,038 INFO L125 PetriNetUnfolderBase]: For 252672/252672 co-relation queries the response was YES. [2024-06-27 22:21:55,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36840 conditions, 4767 events. 2650/4767 cut-off events. For 252672/252672 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 32486 event pairs, 303 based on Foata normal form. 1/4630 useless extension candidates. Maximal degree in co-relation 36660. Up to 3358 conditions per place. [2024-06-27 22:21:55,102 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 578 selfloop transitions, 392 changer transitions 0/977 dead transitions. [2024-06-27 22:21:55,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 977 transitions, 19416 flow [2024-06-27 22:21:55,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:55,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:21:55,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 22:21:55,103 INFO L175 Difference]: Start difference. First operand has 401 places, 928 transitions, 16663 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:21:55,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 977 transitions, 19416 flow [2024-06-27 22:21:56,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 977 transitions, 18728 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 22:21:56,326 INFO L231 Difference]: Finished difference. Result has 405 places, 946 transitions, 17006 flow [2024-06-27 22:21:56,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=15975, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17006, PETRI_PLACES=405, PETRI_TRANSITIONS=946} [2024-06-27 22:21:56,327 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 362 predicate places. [2024-06-27 22:21:56,328 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 946 transitions, 17006 flow [2024-06-27 22:21:56,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:56,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:56,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:56,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:21:56,328 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:56,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1070077040, now seen corresponding path program 17 times [2024-06-27 22:21:56,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:56,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570137358] [2024-06-27 22:21:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:56,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:58,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:58,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570137358] [2024-06-27 22:21:58,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570137358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:58,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349687006] [2024-06-27 22:21:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:58,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:58,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:58,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:21:58,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 946 transitions, 17006 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:58,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:58,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:21:58,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:59,871 INFO L124 PetriNetUnfolderBase]: 2648/4764 cut-off events. [2024-06-27 22:21:59,871 INFO L125 PetriNetUnfolderBase]: For 253605/253605 co-relation queries the response was YES. [2024-06-27 22:21:59,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36904 conditions, 4764 events. 2648/4764 cut-off events. For 253605/253605 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 32513 event pairs, 304 based on Foata normal form. 1/4627 useless extension candidates. Maximal degree in co-relation 36722. Up to 3356 conditions per place. [2024-06-27 22:21:59,942 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 570 selfloop transitions, 397 changer transitions 0/974 dead transitions. [2024-06-27 22:21:59,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 974 transitions, 19308 flow [2024-06-27 22:21:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:59,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:21:59,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 22:21:59,943 INFO L175 Difference]: Start difference. First operand has 405 places, 946 transitions, 17006 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:21:59,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 974 transitions, 19308 flow [2024-06-27 22:22:01,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 974 transitions, 18607 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 22:22:01,137 INFO L231 Difference]: Finished difference. Result has 409 places, 946 transitions, 17119 flow [2024-06-27 22:22:01,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=16305, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17119, PETRI_PLACES=409, PETRI_TRANSITIONS=946} [2024-06-27 22:22:01,137 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 366 predicate places. [2024-06-27 22:22:01,137 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 946 transitions, 17119 flow [2024-06-27 22:22:01,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:01,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:01,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:01,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:22:01,138 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:01,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:01,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1070076792, now seen corresponding path program 12 times [2024-06-27 22:22:01,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:01,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753557461] [2024-06-27 22:22:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:01,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:03,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:03,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753557461] [2024-06-27 22:22:03,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753557461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:03,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:03,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:03,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676006537] [2024-06-27 22:22:03,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:03,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:03,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:03,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:22:03,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 946 transitions, 17119 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:03,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:03,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:22:03,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:04,727 INFO L124 PetriNetUnfolderBase]: 2704/4849 cut-off events. [2024-06-27 22:22:04,727 INFO L125 PetriNetUnfolderBase]: For 259596/259596 co-relation queries the response was YES. [2024-06-27 22:22:04,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37534 conditions, 4849 events. 2704/4849 cut-off events. For 259596/259596 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 33143 event pairs, 301 based on Foata normal form. 1/4713 useless extension candidates. Maximal degree in co-relation 37351. Up to 3663 conditions per place. [2024-06-27 22:22:04,799 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 775 selfloop transitions, 214 changer transitions 0/996 dead transitions. [2024-06-27 22:22:04,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 996 transitions, 19701 flow [2024-06-27 22:22:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:04,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:22:04,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-27 22:22:04,801 INFO L175 Difference]: Start difference. First operand has 409 places, 946 transitions, 17119 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:22:04,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 996 transitions, 19701 flow [2024-06-27 22:22:06,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 996 transitions, 18870 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:06,162 INFO L231 Difference]: Finished difference. Result has 410 places, 970 transitions, 17065 flow [2024-06-27 22:22:06,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=16288, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17065, PETRI_PLACES=410, PETRI_TRANSITIONS=970} [2024-06-27 22:22:06,163 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 367 predicate places. [2024-06-27 22:22:06,163 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 970 transitions, 17065 flow [2024-06-27 22:22:06,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:06,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:06,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:06,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:22:06,164 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:06,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:06,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1066794160, now seen corresponding path program 18 times [2024-06-27 22:22:06,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:06,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660050073] [2024-06-27 22:22:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:06,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:08,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660050073] [2024-06-27 22:22:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660050073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:08,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:08,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:08,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162690497] [2024-06-27 22:22:08,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:08,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:08,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:08,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:22:08,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 970 transitions, 17065 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:08,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:08,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:22:08,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:09,704 INFO L124 PetriNetUnfolderBase]: 2750/4917 cut-off events. [2024-06-27 22:22:09,704 INFO L125 PetriNetUnfolderBase]: For 266996/266996 co-relation queries the response was YES. [2024-06-27 22:22:09,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38038 conditions, 4917 events. 2750/4917 cut-off events. For 266996/266996 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 33548 event pairs, 290 based on Foata normal form. 1/4779 useless extension candidates. Maximal degree in co-relation 37854. Up to 3495 conditions per place. [2024-06-27 22:22:09,777 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 603 selfloop transitions, 416 changer transitions 0/1026 dead transitions. [2024-06-27 22:22:09,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1026 transitions, 20051 flow [2024-06-27 22:22:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:22:09,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 22:22:09,778 INFO L175 Difference]: Start difference. First operand has 410 places, 970 transitions, 17065 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:22:09,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1026 transitions, 20051 flow [2024-06-27 22:22:11,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 1026 transitions, 19794 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 22:22:11,318 INFO L231 Difference]: Finished difference. Result has 417 places, 995 transitions, 18001 flow [2024-06-27 22:22:11,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=16808, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=391, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18001, PETRI_PLACES=417, PETRI_TRANSITIONS=995} [2024-06-27 22:22:11,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-27 22:22:11,319 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 995 transitions, 18001 flow [2024-06-27 22:22:11,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:11,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:11,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:11,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:22:11,319 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:11,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:11,321 INFO L85 PathProgramCache]: Analyzing trace with hash -897356262, now seen corresponding path program 13 times [2024-06-27 22:22:11,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:11,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291698613] [2024-06-27 22:22:11,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:11,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:13,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291698613] [2024-06-27 22:22:13,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291698613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:13,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:13,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:13,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299297768] [2024-06-27 22:22:13,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:13,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:13,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:13,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:22:13,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 995 transitions, 18001 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:13,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:13,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:22:13,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:15,041 INFO L124 PetriNetUnfolderBase]: 2788/4977 cut-off events. [2024-06-27 22:22:15,042 INFO L125 PetriNetUnfolderBase]: For 281091/281091 co-relation queries the response was YES. [2024-06-27 22:22:15,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38941 conditions, 4977 events. 2788/4977 cut-off events. For 281091/281091 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 34059 event pairs, 295 based on Foata normal form. 1/4840 useless extension candidates. Maximal degree in co-relation 38755. Up to 3777 conditions per place. [2024-06-27 22:22:15,117 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 805 selfloop transitions, 228 changer transitions 0/1040 dead transitions. [2024-06-27 22:22:15,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1040 transitions, 20856 flow [2024-06-27 22:22:15,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:22:15,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-27 22:22:15,119 INFO L175 Difference]: Start difference. First operand has 417 places, 995 transitions, 18001 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:22:15,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 1040 transitions, 20856 flow [2024-06-27 22:22:16,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 1040 transitions, 20164 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 22:22:16,738 INFO L231 Difference]: Finished difference. Result has 421 places, 1012 transitions, 18028 flow [2024-06-27 22:22:16,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=17309, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=995, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18028, PETRI_PLACES=421, PETRI_TRANSITIONS=1012} [2024-06-27 22:22:16,739 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-06-27 22:22:16,739 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 1012 transitions, 18028 flow [2024-06-27 22:22:16,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:16,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:16,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:16,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:22:16,739 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:16,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:16,740 INFO L85 PathProgramCache]: Analyzing trace with hash -897593660, now seen corresponding path program 19 times [2024-06-27 22:22:16,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:16,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897454871] [2024-06-27 22:22:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:16,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:18,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:18,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897454871] [2024-06-27 22:22:18,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897454871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:18,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:18,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:18,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064190568] [2024-06-27 22:22:18,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:18,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:18,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:18,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:18,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:18,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:22:18,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 1012 transitions, 18028 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:18,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:18,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:22:18,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:20,491 INFO L124 PetriNetUnfolderBase]: 2786/4973 cut-off events. [2024-06-27 22:22:20,493 INFO L125 PetriNetUnfolderBase]: For 281342/281342 co-relation queries the response was YES. [2024-06-27 22:22:20,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38595 conditions, 4973 events. 2786/4973 cut-off events. For 281342/281342 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 33990 event pairs, 288 based on Foata normal form. 1/4835 useless extension candidates. Maximal degree in co-relation 38409. Up to 3550 conditions per place. [2024-06-27 22:22:20,570 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 614 selfloop transitions, 419 changer transitions 0/1040 dead transitions. [2024-06-27 22:22:20,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1040 transitions, 20486 flow [2024-06-27 22:22:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:20,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:22:20,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:22:20,571 INFO L175 Difference]: Start difference. First operand has 421 places, 1012 transitions, 18028 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:22:20,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 1040 transitions, 20486 flow [2024-06-27 22:22:22,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1040 transitions, 20057 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-27 22:22:22,314 INFO L231 Difference]: Finished difference. Result has 427 places, 1012 transitions, 18454 flow [2024-06-27 22:22:22,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=17599, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1012, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=419, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18454, PETRI_PLACES=427, PETRI_TRANSITIONS=1012} [2024-06-27 22:22:22,315 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 384 predicate places. [2024-06-27 22:22:22,315 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 1012 transitions, 18454 flow [2024-06-27 22:22:22,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:22,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:22,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:22,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:22:22,315 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:22,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:22,316 INFO L85 PathProgramCache]: Analyzing trace with hash -897593846, now seen corresponding path program 15 times [2024-06-27 22:22:22,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:22,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884094035] [2024-06-27 22:22:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:22,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:24,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:24,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884094035] [2024-06-27 22:22:24,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884094035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:24,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:24,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240090935] [2024-06-27 22:22:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:24,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:24,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:24,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:24,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:24,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 1012 transitions, 18454 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:24,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:24,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:24,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:26,045 INFO L124 PetriNetUnfolderBase]: 2668/4855 cut-off events. [2024-06-27 22:22:26,045 INFO L125 PetriNetUnfolderBase]: For 284084/284084 co-relation queries the response was YES. [2024-06-27 22:22:26,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37878 conditions, 4855 events. 2668/4855 cut-off events. For 284084/284084 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 33690 event pairs, 283 based on Foata normal form. 1/4717 useless extension candidates. Maximal degree in co-relation 37690. Up to 3279 conditions per place. [2024-06-27 22:22:26,108 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 530 selfloop transitions, 369 changer transitions 0/1040 dead transitions. [2024-06-27 22:22:26,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 1040 transitions, 20476 flow [2024-06-27 22:22:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:26,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 22:22:26,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-06-27 22:22:26,109 INFO L175 Difference]: Start difference. First operand has 427 places, 1012 transitions, 18454 flow. Second operand 9 states and 177 transitions. [2024-06-27 22:22:26,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 1040 transitions, 20476 flow [2024-06-27 22:22:27,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 1040 transitions, 19610 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:27,525 INFO L231 Difference]: Finished difference. Result has 428 places, 1015 transitions, 18388 flow [2024-06-27 22:22:27,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=17592, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1012, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=366, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18388, PETRI_PLACES=428, PETRI_TRANSITIONS=1015} [2024-06-27 22:22:27,526 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 385 predicate places. [2024-06-27 22:22:27,526 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 1015 transitions, 18388 flow [2024-06-27 22:22:27,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:27,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:27,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:27,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:22:27,526 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:27,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash -897356510, now seen corresponding path program 20 times [2024-06-27 22:22:27,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:27,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010861032] [2024-06-27 22:22:27,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:27,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:29,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:29,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010861032] [2024-06-27 22:22:29,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010861032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:29,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:29,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:29,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055500322] [2024-06-27 22:22:29,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:29,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:29,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:29,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:29,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:29,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:22:29,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 1015 transitions, 18388 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:29,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:29,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:22:29,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:31,072 INFO L124 PetriNetUnfolderBase]: 2786/4973 cut-off events. [2024-06-27 22:22:31,072 INFO L125 PetriNetUnfolderBase]: For 282584/282584 co-relation queries the response was YES. [2024-06-27 22:22:31,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38498 conditions, 4973 events. 2786/4973 cut-off events. For 282584/282584 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 33978 event pairs, 289 based on Foata normal form. 1/4835 useless extension candidates. Maximal degree in co-relation 38310. Up to 3551 conditions per place. [2024-06-27 22:22:31,145 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 592 selfloop transitions, 441 changer transitions 0/1040 dead transitions. [2024-06-27 22:22:31,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1040 transitions, 20607 flow [2024-06-27 22:22:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:22:31,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:22:31,146 INFO L175 Difference]: Start difference. First operand has 428 places, 1015 transitions, 18388 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:22:31,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 1040 transitions, 20607 flow [2024-06-27 22:22:32,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 1040 transitions, 19959 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 22:22:32,789 INFO L231 Difference]: Finished difference. Result has 432 places, 1015 transitions, 18638 flow [2024-06-27 22:22:32,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=17740, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=441, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18638, PETRI_PLACES=432, PETRI_TRANSITIONS=1015} [2024-06-27 22:22:32,790 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 389 predicate places. [2024-06-27 22:22:32,790 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 1015 transitions, 18638 flow [2024-06-27 22:22:32,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:32,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:32,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:32,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:22:32,790 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:32,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1759434662, now seen corresponding path program 14 times [2024-06-27 22:22:32,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:32,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496099596] [2024-06-27 22:22:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:34,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:34,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496099596] [2024-06-27 22:22:34,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496099596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:34,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:34,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:34,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226955302] [2024-06-27 22:22:34,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:34,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:34,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:34,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:34,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:34,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:22:34,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1015 transitions, 18638 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:34,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:34,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:22:34,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:36,509 INFO L124 PetriNetUnfolderBase]: 2784/4971 cut-off events. [2024-06-27 22:22:36,509 INFO L125 PetriNetUnfolderBase]: For 285870/285870 co-relation queries the response was YES. [2024-06-27 22:22:36,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38630 conditions, 4971 events. 2784/4971 cut-off events. For 285870/285870 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 34009 event pairs, 297 based on Foata normal form. 1/4834 useless extension candidates. Maximal degree in co-relation 38440. Up to 3772 conditions per place. [2024-06-27 22:22:36,581 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 814 selfloop transitions, 222 changer transitions 0/1043 dead transitions. [2024-06-27 22:22:36,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1043 transitions, 21092 flow [2024-06-27 22:22:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:22:36,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-27 22:22:36,582 INFO L175 Difference]: Start difference. First operand has 432 places, 1015 transitions, 18638 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:22:36,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1043 transitions, 21092 flow [2024-06-27 22:22:38,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 1043 transitions, 20119 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 22:22:38,074 INFO L231 Difference]: Finished difference. Result has 431 places, 1015 transitions, 18121 flow [2024-06-27 22:22:38,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=17665, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=793, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18121, PETRI_PLACES=431, PETRI_TRANSITIONS=1015} [2024-06-27 22:22:38,075 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 388 predicate places. [2024-06-27 22:22:38,075 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 1015 transitions, 18121 flow [2024-06-27 22:22:38,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:38,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:38,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:38,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:22:38,075 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:38,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:38,076 INFO L85 PathProgramCache]: Analyzing trace with hash 740224874, now seen corresponding path program 3 times [2024-06-27 22:22:38,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:38,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189922318] [2024-06-27 22:22:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:38,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:39,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:39,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189922318] [2024-06-27 22:22:39,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189922318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:39,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:39,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:39,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78432755] [2024-06-27 22:22:39,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:39,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:39,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:39,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:39,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:39,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 1015 transitions, 18121 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:39,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:39,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:39,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:41,390 INFO L124 PetriNetUnfolderBase]: 2653/4841 cut-off events. [2024-06-27 22:22:41,390 INFO L125 PetriNetUnfolderBase]: For 293264/293360 co-relation queries the response was YES. [2024-06-27 22:22:41,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36755 conditions, 4841 events. 2653/4841 cut-off events. For 293264/293360 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 33712 event pairs, 325 based on Foata normal form. 69/4770 useless extension candidates. Maximal degree in co-relation 36565. Up to 3569 conditions per place. [2024-06-27 22:22:41,454 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 842 selfloop transitions, 102 changer transitions 0/1071 dead transitions. [2024-06-27 22:22:41,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1071 transitions, 20546 flow [2024-06-27 22:22:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 22:22:41,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:22:41,457 INFO L175 Difference]: Start difference. First operand has 431 places, 1015 transitions, 18121 flow. Second operand 10 states and 190 transitions. [2024-06-27 22:22:41,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1071 transitions, 20546 flow [2024-06-27 22:22:42,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 1071 transitions, 20037 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:42,901 INFO L231 Difference]: Finished difference. Result has 434 places, 1043 transitions, 18254 flow [2024-06-27 22:22:42,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=17612, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18254, PETRI_PLACES=434, PETRI_TRANSITIONS=1043} [2024-06-27 22:22:42,902 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 391 predicate places. [2024-06-27 22:22:42,902 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 1043 transitions, 18254 flow [2024-06-27 22:22:42,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:42,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:42,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:42,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:22:42,903 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:42,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:42,903 INFO L85 PathProgramCache]: Analyzing trace with hash 740224564, now seen corresponding path program 15 times [2024-06-27 22:22:42,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:42,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115572577] [2024-06-27 22:22:42,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:42,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:44,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:44,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115572577] [2024-06-27 22:22:44,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115572577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:44,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:44,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:44,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568615630] [2024-06-27 22:22:44,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:44,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:44,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:44,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:22:44,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 1043 transitions, 18254 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:44,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:44,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:22:44,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:46,613 INFO L124 PetriNetUnfolderBase]: 2826/5044 cut-off events. [2024-06-27 22:22:46,614 INFO L125 PetriNetUnfolderBase]: For 279194/279194 co-relation queries the response was YES. [2024-06-27 22:22:46,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38561 conditions, 5044 events. 2826/5044 cut-off events. For 279194/279194 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 34649 event pairs, 285 based on Foata normal form. 1/4907 useless extension candidates. Maximal degree in co-relation 38368. Up to 3836 conditions per place. [2024-06-27 22:22:46,696 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 824 selfloop transitions, 237 changer transitions 0/1068 dead transitions. [2024-06-27 22:22:46,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1068 transitions, 20541 flow [2024-06-27 22:22:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:46,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:22:46,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:22:46,698 INFO L175 Difference]: Start difference. First operand has 434 places, 1043 transitions, 18254 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:22:46,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 1068 transitions, 20541 flow [2024-06-27 22:22:48,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1068 transitions, 20381 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-06-27 22:22:48,318 INFO L231 Difference]: Finished difference. Result has 440 places, 1043 transitions, 18589 flow [2024-06-27 22:22:48,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18104, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1043, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=806, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18589, PETRI_PLACES=440, PETRI_TRANSITIONS=1043} [2024-06-27 22:22:48,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 397 predicate places. [2024-06-27 22:22:48,319 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 1043 transitions, 18589 flow [2024-06-27 22:22:48,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:48,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:48,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:48,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:22:48,319 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:48,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:48,319 INFO L85 PathProgramCache]: Analyzing trace with hash -199839871, now seen corresponding path program 1 times [2024-06-27 22:22:48,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:48,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444308101] [2024-06-27 22:22:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:48,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:51,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444308101] [2024-06-27 22:22:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444308101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:51,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:51,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:51,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739263246] [2024-06-27 22:22:51,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:51,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:51,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:51,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:51,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:51,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:51,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 1043 transitions, 18589 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:51,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:51,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:51,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:52,882 INFO L124 PetriNetUnfolderBase]: 2653/4864 cut-off events. [2024-06-27 22:22:52,882 INFO L125 PetriNetUnfolderBase]: For 281459/281523 co-relation queries the response was YES. [2024-06-27 22:22:52,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36945 conditions, 4864 events. 2653/4864 cut-off events. For 281459/281523 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 34133 event pairs, 402 based on Foata normal form. 44/4760 useless extension candidates. Maximal degree in co-relation 36750. Up to 3759 conditions per place. [2024-06-27 22:22:52,950 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 921 selfloop transitions, 26 changer transitions 0/1074 dead transitions. [2024-06-27 22:22:52,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1074 transitions, 20705 flow [2024-06-27 22:22:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:22:52,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441025641025641 [2024-06-27 22:22:52,951 INFO L175 Difference]: Start difference. First operand has 440 places, 1043 transitions, 18589 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:22:52,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1074 transitions, 20705 flow [2024-06-27 22:22:54,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 1074 transitions, 20193 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:54,498 INFO L231 Difference]: Finished difference. Result has 443 places, 1045 transitions, 18160 flow [2024-06-27 22:22:54,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18077, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1043, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1018, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18160, PETRI_PLACES=443, PETRI_TRANSITIONS=1045} [2024-06-27 22:22:54,499 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2024-06-27 22:22:54,499 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 1045 transitions, 18160 flow [2024-06-27 22:22:54,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:54,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:54,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:54,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:22:54,500 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:54,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash 984018456, now seen corresponding path program 1 times [2024-06-27 22:22:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:54,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207766155] [2024-06-27 22:22:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:54,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:54,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:54,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207766155] [2024-06-27 22:22:54,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207766155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:54,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:54,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:22:54,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078711345] [2024-06-27 22:22:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:54,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:22:54,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:22:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:22:54,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-06-27 22:22:54,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 1045 transitions, 18160 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:54,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:54,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-06-27 22:22:54,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:56,210 INFO L124 PetriNetUnfolderBase]: 3207/5581 cut-off events. [2024-06-27 22:22:56,210 INFO L125 PetriNetUnfolderBase]: For 195337/195495 co-relation queries the response was YES. [2024-06-27 22:22:56,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38355 conditions, 5581 events. 3207/5581 cut-off events. For 195337/195495 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 37651 event pairs, 328 based on Foata normal form. 64/5393 useless extension candidates. Maximal degree in co-relation 38158. Up to 3262 conditions per place. [2024-06-27 22:22:56,286 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 684 selfloop transitions, 119 changer transitions 164/1280 dead transitions. [2024-06-27 22:22:56,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1280 transitions, 22402 flow [2024-06-27 22:22:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:22:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:22:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:22:56,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2024-06-27 22:22:56,287 INFO L175 Difference]: Start difference. First operand has 443 places, 1045 transitions, 18160 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:22:56,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 1280 transitions, 22402 flow [2024-06-27 22:22:57,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1280 transitions, 22270 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:57,932 INFO L231 Difference]: Finished difference. Result has 449 places, 1050 transitions, 18642 flow [2024-06-27 22:22:57,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18101, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=926, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18642, PETRI_PLACES=449, PETRI_TRANSITIONS=1050} [2024-06-27 22:22:57,932 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 406 predicate places. [2024-06-27 22:22:57,932 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 1050 transitions, 18642 flow [2024-06-27 22:22:57,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:57,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:57,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:57,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:22:57,933 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:57,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:57,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1867109894, now seen corresponding path program 1 times [2024-06-27 22:22:57,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:57,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386966942] [2024-06-27 22:22:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:57,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:59,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386966942] [2024-06-27 22:22:59,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386966942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:59,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:59,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:59,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115615099] [2024-06-27 22:22:59,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:59,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:59,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:59,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:59,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:00,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:00,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 1050 transitions, 18642 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:00,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:00,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:00,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:01,692 INFO L124 PetriNetUnfolderBase]: 2742/4884 cut-off events. [2024-06-27 22:23:01,692 INFO L125 PetriNetUnfolderBase]: For 286875/286885 co-relation queries the response was YES. [2024-06-27 22:23:01,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39125 conditions, 4884 events. 2742/4884 cut-off events. For 286875/286885 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 33588 event pairs, 372 based on Foata normal form. 11/4880 useless extension candidates. Maximal degree in co-relation 38922. Up to 3842 conditions per place. [2024-06-27 22:23:01,774 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 869 selfloop transitions, 86 changer transitions 5/1103 dead transitions. [2024-06-27 22:23:01,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1103 transitions, 21210 flow [2024-06-27 22:23:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:01,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 22:23:01,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-27 22:23:01,775 INFO L175 Difference]: Start difference. First operand has 449 places, 1050 transitions, 18642 flow. Second operand 11 states and 203 transitions. [2024-06-27 22:23:01,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 1103 transitions, 21210 flow [2024-06-27 22:23:03,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 1103 transitions, 21196 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 22:23:03,506 INFO L231 Difference]: Finished difference. Result has 459 places, 1064 transitions, 19107 flow [2024-06-27 22:23:03,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18638, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=967, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19107, PETRI_PLACES=459, PETRI_TRANSITIONS=1064} [2024-06-27 22:23:03,507 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-27 22:23:03,507 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 1064 transitions, 19107 flow [2024-06-27 22:23:03,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:03,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:03,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:03,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:23:03,508 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:03,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash -418458358, now seen corresponding path program 2 times [2024-06-27 22:23:03,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:03,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974279589] [2024-06-27 22:23:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:03,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:05,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:05,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974279589] [2024-06-27 22:23:05,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974279589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:05,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:05,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:05,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730093416] [2024-06-27 22:23:05,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:05,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:05,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:05,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:05,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:05,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 1064 transitions, 19107 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:05,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:05,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:05,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:06,982 INFO L124 PetriNetUnfolderBase]: 2713/4824 cut-off events. [2024-06-27 22:23:06,982 INFO L125 PetriNetUnfolderBase]: For 286423/286433 co-relation queries the response was YES. [2024-06-27 22:23:07,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38935 conditions, 4824 events. 2713/4824 cut-off events. For 286423/286433 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 32844 event pairs, 379 based on Foata normal form. 11/4822 useless extension candidates. Maximal degree in co-relation 38727. Up to 3826 conditions per place. [2024-06-27 22:23:07,059 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 868 selfloop transitions, 80 changer transitions 0/1091 dead transitions. [2024-06-27 22:23:07,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1091 transitions, 21145 flow [2024-06-27 22:23:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:23:07,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:23:07,061 INFO L175 Difference]: Start difference. First operand has 459 places, 1064 transitions, 19107 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:23:07,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1091 transitions, 21145 flow [2024-06-27 22:23:09,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1091 transitions, 20729 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:09,079 INFO L231 Difference]: Finished difference. Result has 460 places, 1064 transitions, 18862 flow [2024-06-27 22:23:09,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18691, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=984, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18862, PETRI_PLACES=460, PETRI_TRANSITIONS=1064} [2024-06-27 22:23:09,079 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 417 predicate places. [2024-06-27 22:23:09,079 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 1064 transitions, 18862 flow [2024-06-27 22:23:09,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:09,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:09,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:09,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:23:09,080 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:09,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash -418458203, now seen corresponding path program 1 times [2024-06-27 22:23:09,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:09,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387959702] [2024-06-27 22:23:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:09,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:10,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:10,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387959702] [2024-06-27 22:23:10,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387959702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:10,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:10,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:10,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108714925] [2024-06-27 22:23:10,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:10,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:10,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:10,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:10,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:10,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:23:10,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 1064 transitions, 18862 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:10,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:10,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:23:10,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:12,254 INFO L124 PetriNetUnfolderBase]: 2834/4947 cut-off events. [2024-06-27 22:23:12,254 INFO L125 PetriNetUnfolderBase]: For 288102/288112 co-relation queries the response was YES. [2024-06-27 22:23:12,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39540 conditions, 4947 events. 2834/4947 cut-off events. For 288102/288112 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 33166 event pairs, 402 based on Foata normal form. 11/4945 useless extension candidates. Maximal degree in co-relation 39332. Up to 4293 conditions per place. [2024-06-27 22:23:12,338 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1011 selfloop transitions, 70 changer transitions 0/1089 dead transitions. [2024-06-27 22:23:12,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1089 transitions, 21190 flow [2024-06-27 22:23:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:23:12,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282051282051282 [2024-06-27 22:23:12,340 INFO L175 Difference]: Start difference. First operand has 460 places, 1064 transitions, 18862 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:23:12,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1089 transitions, 21190 flow [2024-06-27 22:23:14,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1089 transitions, 21059 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 22:23:14,364 INFO L231 Difference]: Finished difference. Result has 463 places, 1067 transitions, 18964 flow [2024-06-27 22:23:14,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18731, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=994, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18964, PETRI_PLACES=463, PETRI_TRANSITIONS=1067} [2024-06-27 22:23:14,364 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 420 predicate places. [2024-06-27 22:23:14,364 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 1067 transitions, 18964 flow [2024-06-27 22:23:14,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:14,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:14,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:14,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:23:14,365 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:14,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash -414733553, now seen corresponding path program 2 times [2024-06-27 22:23:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:14,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494463346] [2024-06-27 22:23:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:14,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:15,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:15,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494463346] [2024-06-27 22:23:15,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494463346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:15,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:15,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:15,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078936564] [2024-06-27 22:23:15,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:15,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:15,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:15,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:15,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:15,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:23:15,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 1067 transitions, 18964 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:15,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:15,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:23:15,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:17,347 INFO L124 PetriNetUnfolderBase]: 2862/4990 cut-off events. [2024-06-27 22:23:17,348 INFO L125 PetriNetUnfolderBase]: For 305108/305118 co-relation queries the response was YES. [2024-06-27 22:23:17,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40396 conditions, 4990 events. 2862/4990 cut-off events. For 305108/305118 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 33400 event pairs, 362 based on Foata normal form. 11/4988 useless extension candidates. Maximal degree in co-relation 40187. Up to 3678 conditions per place. [2024-06-27 22:23:17,432 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 817 selfloop transitions, 303 changer transitions 0/1128 dead transitions. [2024-06-27 22:23:17,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 1128 transitions, 22329 flow [2024-06-27 22:23:17,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:17,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:23:17,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2024-06-27 22:23:17,433 INFO L175 Difference]: Start difference. First operand has 463 places, 1067 transitions, 18964 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:23:17,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 1128 transitions, 22329 flow [2024-06-27 22:23:19,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1128 transitions, 21980 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:19,497 INFO L231 Difference]: Finished difference. Result has 469 places, 1100 transitions, 20110 flow [2024-06-27 22:23:19,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18615, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=774, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20110, PETRI_PLACES=469, PETRI_TRANSITIONS=1100} [2024-06-27 22:23:19,498 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 426 predicate places. [2024-06-27 22:23:19,498 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 1100 transitions, 20110 flow [2024-06-27 22:23:19,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:19,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:19,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:23:19,498 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:19,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash -414733336, now seen corresponding path program 1 times [2024-06-27 22:23:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:19,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523135019] [2024-06-27 22:23:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:19,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:20,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:20,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523135019] [2024-06-27 22:23:20,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523135019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:20,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:20,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:20,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159094960] [2024-06-27 22:23:20,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:20,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:20,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:20,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:20,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:23:20,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1100 transitions, 20110 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:20,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:20,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:23:20,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:22,683 INFO L124 PetriNetUnfolderBase]: 2880/5017 cut-off events. [2024-06-27 22:23:22,683 INFO L125 PetriNetUnfolderBase]: For 320369/320379 co-relation queries the response was YES. [2024-06-27 22:23:22,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41901 conditions, 5017 events. 2880/5017 cut-off events. For 320369/320379 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 33652 event pairs, 366 based on Foata normal form. 11/5015 useless extension candidates. Maximal degree in co-relation 41687. Up to 3614 conditions per place. [2024-06-27 22:23:22,759 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 843 selfloop transitions, 292 changer transitions 0/1143 dead transitions. [2024-06-27 22:23:22,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1143 transitions, 22970 flow [2024-06-27 22:23:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:23:22,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2024-06-27 22:23:22,761 INFO L175 Difference]: Start difference. First operand has 469 places, 1100 transitions, 20110 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:23:22,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1143 transitions, 22970 flow [2024-06-27 22:23:24,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1143 transitions, 22741 flow, removed 89 selfloop flow, removed 3 redundant places. [2024-06-27 22:23:24,595 INFO L231 Difference]: Finished difference. Result has 478 places, 1118 transitions, 20902 flow [2024-06-27 22:23:24,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=19881, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20902, PETRI_PLACES=478, PETRI_TRANSITIONS=1118} [2024-06-27 22:23:24,596 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 435 predicate places. [2024-06-27 22:23:24,596 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 1118 transitions, 20902 flow [2024-06-27 22:23:24,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:24,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:24,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:24,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:23:24,597 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:24,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:24,597 INFO L85 PathProgramCache]: Analyzing trace with hash -669093940, now seen corresponding path program 3 times [2024-06-27 22:23:24,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:24,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548097609] [2024-06-27 22:23:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:24,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:26,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548097609] [2024-06-27 22:23:26,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548097609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:26,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:26,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:26,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602822569] [2024-06-27 22:23:26,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:26,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:26,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:26,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:26,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:26,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:26,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 1118 transitions, 20902 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:26,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:26,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:26,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:28,066 INFO L124 PetriNetUnfolderBase]: 2795/4965 cut-off events. [2024-06-27 22:23:28,067 INFO L125 PetriNetUnfolderBase]: For 329579/329589 co-relation queries the response was YES. [2024-06-27 22:23:28,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42729 conditions, 4965 events. 2795/4965 cut-off events. For 329579/329589 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 33913 event pairs, 320 based on Foata normal form. 11/4964 useless extension candidates. Maximal degree in co-relation 42511. Up to 3601 conditions per place. [2024-06-27 22:23:28,154 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 828 selfloop transitions, 184 changer transitions 0/1159 dead transitions. [2024-06-27 22:23:28,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1159 transitions, 23391 flow [2024-06-27 22:23:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:23:28,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 22:23:28,155 INFO L175 Difference]: Start difference. First operand has 478 places, 1118 transitions, 20902 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:23:28,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1159 transitions, 23391 flow [2024-06-27 22:23:29,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1159 transitions, 23265 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-27 22:23:29,978 INFO L231 Difference]: Finished difference. Result has 488 places, 1130 transitions, 21529 flow [2024-06-27 22:23:29,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=20776, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=940, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21529, PETRI_PLACES=488, PETRI_TRANSITIONS=1130} [2024-06-27 22:23:29,979 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 445 predicate places. [2024-06-27 22:23:29,979 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 1130 transitions, 21529 flow [2024-06-27 22:23:29,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:29,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:29,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:29,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:23:29,979 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:29,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:29,980 INFO L85 PathProgramCache]: Analyzing trace with hash 236018099, now seen corresponding path program 3 times [2024-06-27 22:23:29,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:29,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903399981] [2024-06-27 22:23:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:29,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:31,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:31,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903399981] [2024-06-27 22:23:31,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903399981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:31,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:31,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:31,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644118871] [2024-06-27 22:23:31,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:31,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:31,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:23:31,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1130 transitions, 21529 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:31,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:31,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:23:31,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:33,536 INFO L124 PetriNetUnfolderBase]: 2903/5069 cut-off events. [2024-06-27 22:23:33,536 INFO L125 PetriNetUnfolderBase]: For 331409/331419 co-relation queries the response was YES. [2024-06-27 22:23:33,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44162 conditions, 5069 events. 2903/5069 cut-off events. For 331409/331419 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 34118 event pairs, 364 based on Foata normal form. 11/5067 useless extension candidates. Maximal degree in co-relation 43939. Up to 3744 conditions per place. [2024-06-27 22:23:33,613 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 853 selfloop transitions, 297 changer transitions 0/1158 dead transitions. [2024-06-27 22:23:33,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1158 transitions, 24265 flow [2024-06-27 22:23:33,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:23:33,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2024-06-27 22:23:33,615 INFO L175 Difference]: Start difference. First operand has 488 places, 1130 transitions, 21529 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:23:33,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1158 transitions, 24265 flow [2024-06-27 22:23:35,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1158 transitions, 24147 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-06-27 22:23:35,793 INFO L231 Difference]: Finished difference. Result has 496 places, 1130 transitions, 22015 flow [2024-06-27 22:23:35,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=21411, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=833, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22015, PETRI_PLACES=496, PETRI_TRANSITIONS=1130} [2024-06-27 22:23:35,794 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 453 predicate places. [2024-06-27 22:23:35,794 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 1130 transitions, 22015 flow [2024-06-27 22:23:35,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:35,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:35,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:35,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:23:35,794 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:35,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:35,795 INFO L85 PathProgramCache]: Analyzing trace with hash -270640996, now seen corresponding path program 2 times [2024-06-27 22:23:35,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:35,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497628715] [2024-06-27 22:23:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:35,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:37,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:37,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497628715] [2024-06-27 22:23:37,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497628715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:37,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:37,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312336326] [2024-06-27 22:23:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:37,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:37,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:37,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:37,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:23:37,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1130 transitions, 22015 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:37,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:37,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:23:37,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:38,983 INFO L124 PetriNetUnfolderBase]: 2931/5111 cut-off events. [2024-06-27 22:23:38,984 INFO L125 PetriNetUnfolderBase]: For 350394/350404 co-relation queries the response was YES. [2024-06-27 22:23:39,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45133 conditions, 5111 events. 2931/5111 cut-off events. For 350394/350404 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 34440 event pairs, 375 based on Foata normal form. 11/5109 useless extension candidates. Maximal degree in co-relation 44908. Up to 3683 conditions per place. [2024-06-27 22:23:39,076 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 911 selfloop transitions, 264 changer transitions 0/1183 dead transitions. [2024-06-27 22:23:39,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1183 transitions, 25668 flow [2024-06-27 22:23:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:23:39,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:23:39,077 INFO L175 Difference]: Start difference. First operand has 496 places, 1130 transitions, 22015 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:23:39,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 1183 transitions, 25668 flow [2024-06-27 22:23:41,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 1183 transitions, 25029 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:41,318 INFO L231 Difference]: Finished difference. Result has 498 places, 1151 transitions, 22264 flow [2024-06-27 22:23:41,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=21392, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=887, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22264, PETRI_PLACES=498, PETRI_TRANSITIONS=1151} [2024-06-27 22:23:41,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 455 predicate places. [2024-06-27 22:23:41,319 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 1151 transitions, 22264 flow [2024-06-27 22:23:41,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:41,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:41,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:41,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:23:41,319 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:41,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash 380123676, now seen corresponding path program 3 times [2024-06-27 22:23:41,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:41,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577423406] [2024-06-27 22:23:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:41,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:42,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:42,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577423406] [2024-06-27 22:23:42,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577423406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:42,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:42,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:42,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408312459] [2024-06-27 22:23:42,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:42,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:42,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:42,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:42,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:23:42,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 1151 transitions, 22264 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:42,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:42,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:23:42,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:44,471 INFO L124 PetriNetUnfolderBase]: 2929/5108 cut-off events. [2024-06-27 22:23:44,471 INFO L125 PetriNetUnfolderBase]: For 348829/348839 co-relation queries the response was YES. [2024-06-27 22:23:44,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45045 conditions, 5108 events. 2929/5108 cut-off events. For 348829/348839 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 34408 event pairs, 380 based on Foata normal form. 11/5106 useless extension candidates. Maximal degree in co-relation 44819. Up to 3681 conditions per place. [2024-06-27 22:23:44,566 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 898 selfloop transitions, 274 changer transitions 0/1180 dead transitions. [2024-06-27 22:23:44,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1180 transitions, 25312 flow [2024-06-27 22:23:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:23:44,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:23:44,567 INFO L175 Difference]: Start difference. First operand has 498 places, 1151 transitions, 22264 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:23:44,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1180 transitions, 25312 flow [2024-06-27 22:23:46,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 1180 transitions, 24872 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-27 22:23:46,927 INFO L231 Difference]: Finished difference. Result has 503 places, 1151 transitions, 22381 flow [2024-06-27 22:23:46,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=21824, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=877, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22381, PETRI_PLACES=503, PETRI_TRANSITIONS=1151} [2024-06-27 22:23:46,928 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 460 predicate places. [2024-06-27 22:23:46,928 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 1151 transitions, 22381 flow [2024-06-27 22:23:46,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:46,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:46,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:46,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:23:46,928 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:46,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash -270641213, now seen corresponding path program 4 times [2024-06-27 22:23:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:46,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943614846] [2024-06-27 22:23:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:48,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:48,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943614846] [2024-06-27 22:23:48,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943614846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:48,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:48,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:48,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027667552] [2024-06-27 22:23:48,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:48,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:48,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:48,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:48,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:48,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:23:48,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 1151 transitions, 22381 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:48,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:48,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:23:48,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:50,106 INFO L124 PetriNetUnfolderBase]: 2947/5135 cut-off events. [2024-06-27 22:23:50,106 INFO L125 PetriNetUnfolderBase]: For 361393/361403 co-relation queries the response was YES. [2024-06-27 22:23:50,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45478 conditions, 5135 events. 2947/5135 cut-off events. For 361393/361403 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 34642 event pairs, 381 based on Foata normal form. 11/5133 useless extension candidates. Maximal degree in co-relation 45251. Up to 3803 conditions per place. [2024-06-27 22:23:50,196 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 876 selfloop transitions, 306 changer transitions 0/1190 dead transitions. [2024-06-27 22:23:50,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 1190 transitions, 25635 flow [2024-06-27 22:23:50,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:50,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:23:50,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2024-06-27 22:23:50,197 INFO L175 Difference]: Start difference. First operand has 503 places, 1151 transitions, 22381 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:23:50,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 1190 transitions, 25635 flow [2024-06-27 22:23:52,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 1190 transitions, 25167 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:23:52,825 INFO L231 Difference]: Finished difference. Result has 507 places, 1160 transitions, 22694 flow [2024-06-27 22:23:52,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=21913, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=854, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22694, PETRI_PLACES=507, PETRI_TRANSITIONS=1160} [2024-06-27 22:23:52,825 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 464 predicate places. [2024-06-27 22:23:52,825 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 1160 transitions, 22694 flow [2024-06-27 22:23:52,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:52,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:52,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:52,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:23:52,826 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:52,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:52,826 INFO L85 PathProgramCache]: Analyzing trace with hash 379908474, now seen corresponding path program 4 times [2024-06-27 22:23:52,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:52,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455767418] [2024-06-27 22:23:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:52,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:54,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:54,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455767418] [2024-06-27 22:23:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455767418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:54,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:54,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535148423] [2024-06-27 22:23:54,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:54,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:54,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:54,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:54,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 1160 transitions, 22694 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:54,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:54,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:54,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:56,441 INFO L124 PetriNetUnfolderBase]: 2854/5064 cut-off events. [2024-06-27 22:23:56,441 INFO L125 PetriNetUnfolderBase]: For 367544/367556 co-relation queries the response was YES. [2024-06-27 22:23:56,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44956 conditions, 5064 events. 2854/5064 cut-off events. For 367544/367556 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 34745 event pairs, 350 based on Foata normal form. 13/5065 useless extension candidates. Maximal degree in co-relation 44728. Up to 3788 conditions per place. [2024-06-27 22:23:56,540 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 830 selfloop transitions, 221 changer transitions 0/1200 dead transitions. [2024-06-27 22:23:56,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 1200 transitions, 25256 flow [2024-06-27 22:23:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:56,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:23:56,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 22:23:56,541 INFO L175 Difference]: Start difference. First operand has 507 places, 1160 transitions, 22694 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:23:56,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 1200 transitions, 25256 flow [2024-06-27 22:23:58,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 1200 transitions, 24891 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 22:23:58,964 INFO L231 Difference]: Finished difference. Result has 514 places, 1168 transitions, 23022 flow [2024-06-27 22:23:58,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22329, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=943, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23022, PETRI_PLACES=514, PETRI_TRANSITIONS=1168} [2024-06-27 22:23:58,964 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 471 predicate places. [2024-06-27 22:23:58,964 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 1168 transitions, 23022 flow [2024-06-27 22:23:58,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:58,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:58,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:58,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:23:58,965 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:58,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash -270842806, now seen corresponding path program 4 times [2024-06-27 22:23:58,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:58,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579532520] [2024-06-27 22:23:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:58,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:00,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579532520] [2024-06-27 22:24:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579532520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:00,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:00,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:00,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659334159] [2024-06-27 22:24:00,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:00,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:00,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:00,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:00,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:00,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:00,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 1168 transitions, 23022 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:00,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:00,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:00,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:02,450 INFO L124 PetriNetUnfolderBase]: 2963/5169 cut-off events. [2024-06-27 22:24:02,450 INFO L125 PetriNetUnfolderBase]: For 368456/368468 co-relation queries the response was YES. [2024-06-27 22:24:02,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45857 conditions, 5169 events. 2963/5169 cut-off events. For 368456/368468 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 34915 event pairs, 379 based on Foata normal form. 13/5169 useless extension candidates. Maximal degree in co-relation 45626. Up to 3735 conditions per place. [2024-06-27 22:24:02,540 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 933 selfloop transitions, 259 changer transitions 0/1200 dead transitions. [2024-06-27 22:24:02,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 1200 transitions, 25984 flow [2024-06-27 22:24:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:24:02,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-27 22:24:02,541 INFO L175 Difference]: Start difference. First operand has 514 places, 1168 transitions, 23022 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:24:02,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 1200 transitions, 25984 flow [2024-06-27 22:24:04,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 1200 transitions, 25696 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 22:24:04,446 INFO L231 Difference]: Finished difference. Result has 520 places, 1168 transitions, 23262 flow [2024-06-27 22:24:04,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22734, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=909, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23262, PETRI_PLACES=520, PETRI_TRANSITIONS=1168} [2024-06-27 22:24:04,447 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 477 predicate places. [2024-06-27 22:24:04,447 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 1168 transitions, 23262 flow [2024-06-27 22:24:04,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:04,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:04,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:04,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:24:04,447 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:04,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:04,447 INFO L85 PathProgramCache]: Analyzing trace with hash -270848603, now seen corresponding path program 5 times [2024-06-27 22:24:04,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:04,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603273532] [2024-06-27 22:24:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:04,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:05,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603273532] [2024-06-27 22:24:05,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603273532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:05,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:05,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:05,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356447788] [2024-06-27 22:24:05,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:05,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:05,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:05,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 1168 transitions, 23262 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:05,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:05,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:05,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:07,663 INFO L124 PetriNetUnfolderBase]: 2971/5181 cut-off events. [2024-06-27 22:24:07,663 INFO L125 PetriNetUnfolderBase]: For 376030/376042 co-relation queries the response was YES. [2024-06-27 22:24:07,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46202 conditions, 5181 events. 2971/5181 cut-off events. For 376030/376042 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 35010 event pairs, 380 based on Foata normal form. 13/5181 useless extension candidates. Maximal degree in co-relation 45970. Up to 3838 conditions per place. [2024-06-27 22:24:07,763 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 898 selfloop transitions, 298 changer transitions 0/1204 dead transitions. [2024-06-27 22:24:07,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1204 transitions, 26518 flow [2024-06-27 22:24:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:24:07,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:24:07,764 INFO L175 Difference]: Start difference. First operand has 520 places, 1168 transitions, 23262 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:24:07,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 1204 transitions, 26518 flow [2024-06-27 22:24:10,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 1204 transitions, 26084 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 22:24:10,153 INFO L231 Difference]: Finished difference. Result has 524 places, 1171 transitions, 23476 flow [2024-06-27 22:24:10,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22828, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=873, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23476, PETRI_PLACES=524, PETRI_TRANSITIONS=1171} [2024-06-27 22:24:10,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 481 predicate places. [2024-06-27 22:24:10,154 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 1171 transitions, 23476 flow [2024-06-27 22:24:10,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:10,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:10,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:10,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:24:10,154 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:10,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash -270843023, now seen corresponding path program 6 times [2024-06-27 22:24:10,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:10,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328417465] [2024-06-27 22:24:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:10,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:11,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:11,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328417465] [2024-06-27 22:24:11,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328417465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:11,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:11,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:11,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124251848] [2024-06-27 22:24:11,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:11,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:11,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:11,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:11,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1171 transitions, 23476 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:11,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:11,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:11,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:13,345 INFO L124 PetriNetUnfolderBase]: 2969/5178 cut-off events. [2024-06-27 22:24:13,345 INFO L125 PetriNetUnfolderBase]: For 375119/375131 co-relation queries the response was YES. [2024-06-27 22:24:13,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46137 conditions, 5178 events. 2969/5178 cut-off events. For 375119/375131 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 34984 event pairs, 380 based on Foata normal form. 13/5178 useless extension candidates. Maximal degree in co-relation 45904. Up to 3836 conditions per place. [2024-06-27 22:24:13,441 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 904 selfloop transitions, 293 changer transitions 0/1205 dead transitions. [2024-06-27 22:24:13,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 1205 transitions, 26501 flow [2024-06-27 22:24:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:24:13,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:24:13,442 INFO L175 Difference]: Start difference. First operand has 524 places, 1171 transitions, 23476 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:24:13,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 1205 transitions, 26501 flow [2024-06-27 22:24:15,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 1205 transitions, 25979 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 22:24:15,782 INFO L231 Difference]: Finished difference. Result has 528 places, 1171 transitions, 23550 flow [2024-06-27 22:24:15,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22954, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=878, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23550, PETRI_PLACES=528, PETRI_TRANSITIONS=1171} [2024-06-27 22:24:15,783 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 485 predicate places. [2024-06-27 22:24:15,783 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 1171 transitions, 23550 flow [2024-06-27 22:24:15,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:15,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:15,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:15,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:24:15,783 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:15,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:15,783 INFO L85 PathProgramCache]: Analyzing trace with hash 781370691, now seen corresponding path program 7 times [2024-06-27 22:24:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:15,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359368896] [2024-06-27 22:24:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:17,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:17,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359368896] [2024-06-27 22:24:17,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359368896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:17,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:17,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:17,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423747832] [2024-06-27 22:24:17,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:17,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:17,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:17,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:17,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:17,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:17,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1171 transitions, 23550 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:17,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:17,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:17,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:18,922 INFO L124 PetriNetUnfolderBase]: 2987/5205 cut-off events. [2024-06-27 22:24:18,922 INFO L125 PetriNetUnfolderBase]: For 387844/387856 co-relation queries the response was YES. [2024-06-27 22:24:18,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46550 conditions, 5205 events. 2987/5205 cut-off events. For 387844/387856 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 35152 event pairs, 392 based on Foata normal form. 13/5205 useless extension candidates. Maximal degree in co-relation 46316. Up to 3856 conditions per place. [2024-06-27 22:24:19,015 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 898 selfloop transitions, 318 changer transitions 0/1224 dead transitions. [2024-06-27 22:24:19,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 1224 transitions, 27341 flow [2024-06-27 22:24:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:19,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:24:19,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:24:19,017 INFO L175 Difference]: Start difference. First operand has 528 places, 1171 transitions, 23550 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:24:19,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 1224 transitions, 27341 flow [2024-06-27 22:24:21,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1224 transitions, 26775 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:24:21,681 INFO L231 Difference]: Finished difference. Result has 531 places, 1188 transitions, 24021 flow [2024-06-27 22:24:21,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=23018, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=870, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24021, PETRI_PLACES=531, PETRI_TRANSITIONS=1188} [2024-06-27 22:24:21,682 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 488 predicate places. [2024-06-27 22:24:21,682 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 1188 transitions, 24021 flow [2024-06-27 22:24:21,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:21,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:21,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:21,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:24:21,683 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:21,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:21,683 INFO L85 PathProgramCache]: Analyzing trace with hash 788728138, now seen corresponding path program 5 times [2024-06-27 22:24:21,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:21,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843448183] [2024-06-27 22:24:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:21,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:23,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:23,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843448183] [2024-06-27 22:24:23,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843448183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:23,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:23,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:23,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422425144] [2024-06-27 22:24:23,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:23,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:23,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:23,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:23,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:23,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:23,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 1188 transitions, 24021 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:23,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:23,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:23,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:24,860 INFO L124 PetriNetUnfolderBase]: 3015/5247 cut-off events. [2024-06-27 22:24:24,860 INFO L125 PetriNetUnfolderBase]: For 406479/406491 co-relation queries the response was YES. [2024-06-27 22:24:24,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47116 conditions, 5247 events. 3015/5247 cut-off events. For 406479/406491 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 35442 event pairs, 396 based on Foata normal form. 13/5247 useless extension candidates. Maximal degree in co-relation 46881. Up to 3802 conditions per place. [2024-06-27 22:24:25,126 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 944 selfloop transitions, 304 changer transitions 0/1256 dead transitions. [2024-06-27 22:24:25,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1256 transitions, 28212 flow [2024-06-27 22:24:25,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:24:25,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:24:25,127 INFO L175 Difference]: Start difference. First operand has 531 places, 1188 transitions, 24021 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:24:25,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1256 transitions, 28212 flow [2024-06-27 22:24:27,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 1256 transitions, 27705 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 22:24:27,349 INFO L231 Difference]: Finished difference. Result has 537 places, 1220 transitions, 24709 flow [2024-06-27 22:24:27,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=23529, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24709, PETRI_PLACES=537, PETRI_TRANSITIONS=1220} [2024-06-27 22:24:27,349 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 494 predicate places. [2024-06-27 22:24:27,349 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 1220 transitions, 24709 flow [2024-06-27 22:24:27,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:27,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:27,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:27,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:24:27,350 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:27,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash 788995048, now seen corresponding path program 6 times [2024-06-27 22:24:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:27,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658203934] [2024-06-27 22:24:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:27,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:28,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:28,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658203934] [2024-06-27 22:24:28,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658203934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:28,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:28,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:28,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706135571] [2024-06-27 22:24:28,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:28,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:28,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:28,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:28,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:28,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:28,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 1220 transitions, 24709 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:28,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:28,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:28,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:30,631 INFO L124 PetriNetUnfolderBase]: 3023/5259 cut-off events. [2024-06-27 22:24:30,631 INFO L125 PetriNetUnfolderBase]: For 413528/413540 co-relation queries the response was YES. [2024-06-27 22:24:30,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47294 conditions, 5259 events. 3023/5259 cut-off events. For 413528/413540 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 35555 event pairs, 399 based on Foata normal form. 13/5259 useless extension candidates. Maximal degree in co-relation 47058. Up to 3811 conditions per place. [2024-06-27 22:24:30,727 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 911 selfloop transitions, 342 changer transitions 0/1261 dead transitions. [2024-06-27 22:24:30,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 1261 transitions, 28201 flow [2024-06-27 22:24:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:24:30,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:24:30,728 INFO L175 Difference]: Start difference. First operand has 537 places, 1220 transitions, 24709 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:24:30,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 1261 transitions, 28201 flow [2024-06-27 22:24:32,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 1261 transitions, 27653 flow, removed 104 selfloop flow, removed 4 redundant places. [2024-06-27 22:24:32,899 INFO L231 Difference]: Finished difference. Result has 543 places, 1229 transitions, 25013 flow [2024-06-27 22:24:32,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=24204, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=887, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25013, PETRI_PLACES=543, PETRI_TRANSITIONS=1229} [2024-06-27 22:24:32,900 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 500 predicate places. [2024-06-27 22:24:32,900 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 1229 transitions, 25013 flow [2024-06-27 22:24:32,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:32,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:32,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:32,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:24:32,900 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:32,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:32,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1432335530, now seen corresponding path program 7 times [2024-06-27 22:24:32,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:32,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394791673] [2024-06-27 22:24:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:32,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:34,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:34,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394791673] [2024-06-27 22:24:34,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394791673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:34,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:34,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:34,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884219238] [2024-06-27 22:24:34,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:34,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:34,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:34,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:34,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:34,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:34,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 1229 transitions, 25013 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:34,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:34,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:34,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:36,203 INFO L124 PetriNetUnfolderBase]: 3041/5286 cut-off events. [2024-06-27 22:24:36,203 INFO L125 PetriNetUnfolderBase]: For 428410/428422 co-relation queries the response was YES. [2024-06-27 22:24:36,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47644 conditions, 5286 events. 3041/5286 cut-off events. For 428410/428422 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 35738 event pairs, 391 based on Foata normal form. 13/5286 useless extension candidates. Maximal degree in co-relation 47407. Up to 3831 conditions per place. [2024-06-27 22:24:36,304 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 971 selfloop transitions, 305 changer transitions 0/1284 dead transitions. [2024-06-27 22:24:36,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1284 transitions, 29290 flow [2024-06-27 22:24:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:24:36,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 22:24:36,305 INFO L175 Difference]: Start difference. First operand has 543 places, 1229 transitions, 25013 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:24:36,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1284 transitions, 29290 flow [2024-06-27 22:24:38,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 1284 transitions, 28765 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-27 22:24:38,806 INFO L231 Difference]: Finished difference. Result has 548 places, 1239 transitions, 25268 flow [2024-06-27 22:24:38,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=24514, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=934, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25268, PETRI_PLACES=548, PETRI_TRANSITIONS=1239} [2024-06-27 22:24:38,806 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 505 predicate places. [2024-06-27 22:24:38,807 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 1239 transitions, 25268 flow [2024-06-27 22:24:38,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:38,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:38,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:38,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:24:38,807 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:38,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1439485153, now seen corresponding path program 8 times [2024-06-27 22:24:38,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:38,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861920324] [2024-06-27 22:24:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:38,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:40,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:40,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861920324] [2024-06-27 22:24:40,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861920324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:40,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144113378] [2024-06-27 22:24:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:40,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:40,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:40,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:40,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 1239 transitions, 25268 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:40,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:40,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:40,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:42,053 INFO L124 PetriNetUnfolderBase]: 3049/5298 cut-off events. [2024-06-27 22:24:42,053 INFO L125 PetriNetUnfolderBase]: For 434331/434343 co-relation queries the response was YES. [2024-06-27 22:24:42,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47765 conditions, 5298 events. 3049/5298 cut-off events. For 434331/434343 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 35771 event pairs, 393 based on Foata normal form. 13/5298 useless extension candidates. Maximal degree in co-relation 47527. Up to 3946 conditions per place. [2024-06-27 22:24:42,155 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 918 selfloop transitions, 348 changer transitions 0/1274 dead transitions. [2024-06-27 22:24:42,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 1274 transitions, 28700 flow [2024-06-27 22:24:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:24:42,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2024-06-27 22:24:42,156 INFO L175 Difference]: Start difference. First operand has 548 places, 1239 transitions, 25268 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:24:42,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 1274 transitions, 28700 flow [2024-06-27 22:24:44,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1274 transitions, 28234 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:24:44,716 INFO L231 Difference]: Finished difference. Result has 553 places, 1242 transitions, 25553 flow [2024-06-27 22:24:44,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=24802, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=894, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25553, PETRI_PLACES=553, PETRI_TRANSITIONS=1242} [2024-06-27 22:24:44,717 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 510 predicate places. [2024-06-27 22:24:44,717 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 1242 transitions, 25553 flow [2024-06-27 22:24:44,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:44,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:44,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:44,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:24:44,718 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:44,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1432335313, now seen corresponding path program 9 times [2024-06-27 22:24:44,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:44,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587960960] [2024-06-27 22:24:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:44,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:46,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:46,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587960960] [2024-06-27 22:24:46,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587960960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:46,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:46,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:46,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883950800] [2024-06-27 22:24:46,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:46,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:46,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:46,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:46,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 1242 transitions, 25553 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:46,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:46,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:46,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:47,971 INFO L124 PetriNetUnfolderBase]: 3057/5310 cut-off events. [2024-06-27 22:24:47,972 INFO L125 PetriNetUnfolderBase]: For 441793/441805 co-relation queries the response was YES. [2024-06-27 22:24:48,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47979 conditions, 5310 events. 3057/5310 cut-off events. For 441793/441805 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 35878 event pairs, 391 based on Foata normal form. 13/5310 useless extension candidates. Maximal degree in co-relation 47740. Up to 3955 conditions per place. [2024-06-27 22:24:48,070 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 956 selfloop transitions, 321 changer transitions 0/1285 dead transitions. [2024-06-27 22:24:48,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1285 transitions, 29222 flow [2024-06-27 22:24:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:24:48,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:24:48,071 INFO L175 Difference]: Start difference. First operand has 553 places, 1242 transitions, 25553 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:24:48,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1285 transitions, 29222 flow [2024-06-27 22:24:50,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 1285 transitions, 28894 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:24:50,860 INFO L231 Difference]: Finished difference. Result has 560 places, 1245 transitions, 25928 flow [2024-06-27 22:24:50,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25234, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=924, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25928, PETRI_PLACES=560, PETRI_TRANSITIONS=1245} [2024-06-27 22:24:50,860 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 517 predicate places. [2024-06-27 22:24:50,860 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 1245 transitions, 25928 flow [2024-06-27 22:24:50,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:50,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:50,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:50,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:24:50,860 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:50,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1432342970, now seen corresponding path program 8 times [2024-06-27 22:24:50,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:50,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412752611] [2024-06-27 22:24:50,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:50,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:52,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:52,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412752611] [2024-06-27 22:24:52,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412752611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:52,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:52,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:52,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735762816] [2024-06-27 22:24:52,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:52,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:52,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:52,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:52,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 1245 transitions, 25928 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:52,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:52,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:52,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:54,349 INFO L124 PetriNetUnfolderBase]: 3055/5307 cut-off events. [2024-06-27 22:24:54,349 INFO L125 PetriNetUnfolderBase]: For 444554/444566 co-relation queries the response was YES. [2024-06-27 22:24:54,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47965 conditions, 5307 events. 3055/5307 cut-off events. For 444554/444566 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 35830 event pairs, 392 based on Foata normal form. 13/5307 useless extension candidates. Maximal degree in co-relation 47725. Up to 3853 conditions per place. [2024-06-27 22:24:54,448 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 969 selfloop transitions, 310 changer transitions 0/1287 dead transitions. [2024-06-27 22:24:54,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1287 transitions, 29796 flow [2024-06-27 22:24:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:24:54,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 22:24:54,449 INFO L175 Difference]: Start difference. First operand has 560 places, 1245 transitions, 25928 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:24:54,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 1287 transitions, 29796 flow [2024-06-27 22:24:57,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 1287 transitions, 29012 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 22:24:57,456 INFO L231 Difference]: Finished difference. Result has 563 places, 1245 transitions, 25773 flow [2024-06-27 22:24:57,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25144, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=935, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25773, PETRI_PLACES=563, PETRI_TRANSITIONS=1245} [2024-06-27 22:24:57,457 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 520 predicate places. [2024-06-27 22:24:57,457 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 1245 transitions, 25773 flow [2024-06-27 22:24:57,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:57,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:57,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:57,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:24:57,457 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:57,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:57,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1439492810, now seen corresponding path program 9 times [2024-06-27 22:24:57,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:57,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623143659] [2024-06-27 22:24:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:58,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:58,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623143659] [2024-06-27 22:24:58,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623143659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:58,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:58,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:58,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761966225] [2024-06-27 22:24:58,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:58,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:58,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:58,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:58,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:24:58,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 1245 transitions, 25773 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:58,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:58,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:24:58,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:00,751 INFO L124 PetriNetUnfolderBase]: 3053/5304 cut-off events. [2024-06-27 22:25:00,752 INFO L125 PetriNetUnfolderBase]: For 439665/439677 co-relation queries the response was YES. [2024-06-27 22:25:00,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47846 conditions, 5304 events. 3053/5304 cut-off events. For 439665/439677 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 35885 event pairs, 393 based on Foata normal form. 13/5304 useless extension candidates. Maximal degree in co-relation 47605. Up to 3851 conditions per place. [2024-06-27 22:25:00,855 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 955 selfloop transitions, 319 changer transitions 0/1282 dead transitions. [2024-06-27 22:25:00,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 1282 transitions, 29262 flow [2024-06-27 22:25:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:25:00,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:25:00,856 INFO L175 Difference]: Start difference. First operand has 563 places, 1245 transitions, 25773 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:25:00,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 1282 transitions, 29262 flow [2024-06-27 22:25:03,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 1282 transitions, 28536 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:03,664 INFO L231 Difference]: Finished difference. Result has 565 places, 1245 transitions, 25694 flow [2024-06-27 22:25:03,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25047, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=926, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25694, PETRI_PLACES=565, PETRI_TRANSITIONS=1245} [2024-06-27 22:25:03,665 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 522 predicate places. [2024-06-27 22:25:03,665 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 1245 transitions, 25694 flow [2024-06-27 22:25:03,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:03,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:03,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:03,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:25:03,666 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:03,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:03,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1432133720, now seen corresponding path program 10 times [2024-06-27 22:25:03,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:03,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99347993] [2024-06-27 22:25:03,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:03,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:05,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:05,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99347993] [2024-06-27 22:25:05,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99347993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:05,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:05,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:05,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130065737] [2024-06-27 22:25:05,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:05,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:05,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:05,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:05,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:25:05,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 1245 transitions, 25694 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:05,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:05,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:25:05,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:06,948 INFO L124 PetriNetUnfolderBase]: 3051/5301 cut-off events. [2024-06-27 22:25:06,948 INFO L125 PetriNetUnfolderBase]: For 437258/437270 co-relation queries the response was YES. [2024-06-27 22:25:07,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47750 conditions, 5301 events. 3051/5301 cut-off events. For 437258/437270 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 35834 event pairs, 385 based on Foata normal form. 13/5301 useless extension candidates. Maximal degree in co-relation 47508. Up to 3849 conditions per place. [2024-06-27 22:25:07,056 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 957 selfloop transitions, 317 changer transitions 0/1282 dead transitions. [2024-06-27 22:25:07,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 1282 transitions, 29009 flow [2024-06-27 22:25:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:25:07,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-27 22:25:07,057 INFO L175 Difference]: Start difference. First operand has 565 places, 1245 transitions, 25694 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:25:07,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 1282 transitions, 29009 flow [2024-06-27 22:25:09,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 1282 transitions, 28349 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:09,953 INFO L231 Difference]: Finished difference. Result has 567 places, 1245 transitions, 25678 flow [2024-06-27 22:25:09,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25034, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25678, PETRI_PLACES=567, PETRI_TRANSITIONS=1245} [2024-06-27 22:25:09,953 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 524 predicate places. [2024-06-27 22:25:09,953 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 1245 transitions, 25678 flow [2024-06-27 22:25:09,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:09,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:09,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:09,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:25:09,954 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:09,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:09,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1432133503, now seen corresponding path program 10 times [2024-06-27 22:25:09,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:09,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536079812] [2024-06-27 22:25:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:11,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:11,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536079812] [2024-06-27 22:25:11,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536079812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:11,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:11,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724756608] [2024-06-27 22:25:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:11,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:11,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:11,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:25:11,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 1245 transitions, 25678 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:11,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:11,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:25:11,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:13,237 INFO L124 PetriNetUnfolderBase]: 3049/5298 cut-off events. [2024-06-27 22:25:13,237 INFO L125 PetriNetUnfolderBase]: For 434494/434506 co-relation queries the response was YES. [2024-06-27 22:25:13,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47641 conditions, 5298 events. 3049/5298 cut-off events. For 434494/434506 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 35805 event pairs, 388 based on Foata normal form. 13/5298 useless extension candidates. Maximal degree in co-relation 47398. Up to 3944 conditions per place. [2024-06-27 22:25:13,340 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 949 selfloop transitions, 325 changer transitions 0/1282 dead transitions. [2024-06-27 22:25:13,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 1282 transitions, 29015 flow [2024-06-27 22:25:13,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:13,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:25:13,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:25:13,341 INFO L175 Difference]: Start difference. First operand has 567 places, 1245 transitions, 25678 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:25:13,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 1282 transitions, 29015 flow [2024-06-27 22:25:16,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 1282 transitions, 28497 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 22:25:16,363 INFO L231 Difference]: Finished difference. Result has 571 places, 1245 transitions, 25820 flow [2024-06-27 22:25:16,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25160, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25820, PETRI_PLACES=571, PETRI_TRANSITIONS=1245} [2024-06-27 22:25:16,364 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 528 predicate places. [2024-06-27 22:25:16,364 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 1245 transitions, 25820 flow [2024-06-27 22:25:16,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:16,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:16,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:16,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:25:16,364 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:16,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:16,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1432127768, now seen corresponding path program 5 times [2024-06-27 22:25:16,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:16,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878329080] [2024-06-27 22:25:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:16,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878329080] [2024-06-27 22:25:18,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878329080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:18,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:18,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277073826] [2024-06-27 22:25:18,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:18,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:18,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:18,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:25:18,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 1245 transitions, 25820 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:18,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:18,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:25:18,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:20,170 INFO L124 PetriNetUnfolderBase]: 2944/5215 cut-off events. [2024-06-27 22:25:20,170 INFO L125 PetriNetUnfolderBase]: For 442788/442804 co-relation queries the response was YES. [2024-06-27 22:25:20,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46977 conditions, 5215 events. 2944/5215 cut-off events. For 442788/442804 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 35890 event pairs, 362 based on Foata normal form. 17/5220 useless extension candidates. Maximal degree in co-relation 46733. Up to 3912 conditions per place. [2024-06-27 22:25:20,277 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 906 selfloop transitions, 228 changer transitions 0/1288 dead transitions. [2024-06-27 22:25:20,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 1288 transitions, 28693 flow [2024-06-27 22:25:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:25:20,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 22:25:20,278 INFO L175 Difference]: Start difference. First operand has 571 places, 1245 transitions, 25820 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:25:20,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 1288 transitions, 28693 flow [2024-06-27 22:25:23,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 1288 transitions, 28114 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:25:23,308 INFO L231 Difference]: Finished difference. Result has 577 places, 1255 transitions, 26061 flow [2024-06-27 22:25:23,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25241, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1022, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26061, PETRI_PLACES=577, PETRI_TRANSITIONS=1255} [2024-06-27 22:25:23,308 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 534 predicate places. [2024-06-27 22:25:23,309 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 1255 transitions, 26061 flow [2024-06-27 22:25:23,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:23,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:23,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:23,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:25:23,309 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:23,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2040852423, now seen corresponding path program 11 times [2024-06-27 22:25:23,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:23,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760433384] [2024-06-27 22:25:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:23,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:24,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:24,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760433384] [2024-06-27 22:25:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760433384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:24,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:24,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223235513] [2024-06-27 22:25:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:24,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:24,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:24,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:25:24,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 1255 transitions, 26061 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:24,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:24,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:25:24,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:26,649 INFO L124 PetriNetUnfolderBase]: 3076/5347 cut-off events. [2024-06-27 22:25:26,649 INFO L125 PetriNetUnfolderBase]: For 447410/447425 co-relation queries the response was YES. [2024-06-27 22:25:26,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48298 conditions, 5347 events. 3076/5347 cut-off events. For 447410/447425 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 36262 event pairs, 448 based on Foata normal form. 16/5350 useless extension candidates. Maximal degree in co-relation 48050. Up to 4699 conditions per place. [2024-06-27 22:25:26,759 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1237 selfloop transitions, 43 changer transitions 0/1288 dead transitions. [2024-06-27 22:25:26,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 1288 transitions, 29039 flow [2024-06-27 22:25:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:25:26,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41794871794871796 [2024-06-27 22:25:26,760 INFO L175 Difference]: Start difference. First operand has 577 places, 1255 transitions, 26061 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:25:26,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 1288 transitions, 29039 flow [2024-06-27 22:25:29,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 1288 transitions, 28780 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 22:25:29,906 INFO L231 Difference]: Finished difference. Result has 586 places, 1265 transitions, 26181 flow [2024-06-27 22:25:29,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25802, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26181, PETRI_PLACES=586, PETRI_TRANSITIONS=1265} [2024-06-27 22:25:29,907 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 543 predicate places. [2024-06-27 22:25:29,907 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 1265 transitions, 26181 flow [2024-06-27 22:25:29,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:29,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:29,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:29,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:25:29,907 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:29,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:29,908 INFO L85 PathProgramCache]: Analyzing trace with hash 603159374, now seen corresponding path program 11 times [2024-06-27 22:25:29,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:29,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79461830] [2024-06-27 22:25:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:29,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:31,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:31,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79461830] [2024-06-27 22:25:31,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79461830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:31,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:31,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:31,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049325766] [2024-06-27 22:25:31,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:31,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:31,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:31,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:31,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:31,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:25:31,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1265 transitions, 26181 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:31,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:31,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:25:31,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:33,223 INFO L124 PetriNetUnfolderBase]: 3094/5374 cut-off events. [2024-06-27 22:25:33,223 INFO L125 PetriNetUnfolderBase]: For 460939/460954 co-relation queries the response was YES. [2024-06-27 22:25:33,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48355 conditions, 5374 events. 3094/5374 cut-off events. For 460939/460954 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 36447 event pairs, 446 based on Foata normal form. 16/5377 useless extension candidates. Maximal degree in co-relation 48104. Up to 4638 conditions per place. [2024-06-27 22:25:33,334 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1232 selfloop transitions, 68 changer transitions 0/1308 dead transitions. [2024-06-27 22:25:33,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 1308 transitions, 29539 flow [2024-06-27 22:25:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:25:33,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2024-06-27 22:25:33,335 INFO L175 Difference]: Start difference. First operand has 586 places, 1265 transitions, 26181 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:25:33,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 1308 transitions, 29539 flow [2024-06-27 22:25:36,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 1308 transitions, 29406 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 22:25:37,070 INFO L231 Difference]: Finished difference. Result has 592 places, 1281 transitions, 26535 flow [2024-06-27 22:25:37,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26048, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26535, PETRI_PLACES=592, PETRI_TRANSITIONS=1281} [2024-06-27 22:25:37,070 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 549 predicate places. [2024-06-27 22:25:37,070 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 1281 transitions, 26535 flow [2024-06-27 22:25:37,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:37,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:37,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:37,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:25:37,071 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:37,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash 595548956, now seen corresponding path program 12 times [2024-06-27 22:25:37,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:37,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250984271] [2024-06-27 22:25:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:38,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250984271] [2024-06-27 22:25:38,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250984271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:38,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:38,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:38,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732778966] [2024-06-27 22:25:38,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:38,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:38,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:38,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:25:38,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 1281 transitions, 26535 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:38,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:38,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:25:38,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:40,565 INFO L124 PetriNetUnfolderBase]: 3112/5401 cut-off events. [2024-06-27 22:25:40,565 INFO L125 PetriNetUnfolderBase]: For 475269/475284 co-relation queries the response was YES. [2024-06-27 22:25:40,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48889 conditions, 5401 events. 3112/5401 cut-off events. For 475269/475284 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 36639 event pairs, 454 based on Foata normal form. 16/5404 useless extension candidates. Maximal degree in co-relation 48635. Up to 4658 conditions per place. [2024-06-27 22:25:40,667 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1245 selfloop transitions, 80 changer transitions 0/1333 dead transitions. [2024-06-27 22:25:40,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 1333 transitions, 30398 flow [2024-06-27 22:25:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:25:40,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-27 22:25:40,668 INFO L175 Difference]: Start difference. First operand has 592 places, 1281 transitions, 26535 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:25:40,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 1333 transitions, 30398 flow [2024-06-27 22:25:44,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1333 transitions, 30197 flow, removed 91 selfloop flow, removed 4 redundant places. [2024-06-27 22:25:44,457 INFO L231 Difference]: Finished difference. Result has 598 places, 1301 transitions, 26908 flow [2024-06-27 22:25:44,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26418, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26908, PETRI_PLACES=598, PETRI_TRANSITIONS=1301} [2024-06-27 22:25:44,458 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 555 predicate places. [2024-06-27 22:25:44,458 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 1301 transitions, 26908 flow [2024-06-27 22:25:44,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:44,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:44,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:44,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:25:44,458 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:44,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash 762235978, now seen corresponding path program 13 times [2024-06-27 22:25:44,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:44,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652514692] [2024-06-27 22:25:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:44,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:45,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:45,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652514692] [2024-06-27 22:25:45,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652514692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:45,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:45,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614431892] [2024-06-27 22:25:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:45,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:45,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:45,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:45,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:25:45,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1301 transitions, 26908 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:45,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:45,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:25:45,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:47,896 INFO L124 PetriNetUnfolderBase]: 3120/5413 cut-off events. [2024-06-27 22:25:47,896 INFO L125 PetriNetUnfolderBase]: For 480904/480919 co-relation queries the response was YES. [2024-06-27 22:25:47,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49050 conditions, 5413 events. 3120/5413 cut-off events. For 480904/480919 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 36685 event pairs, 443 based on Foata normal form. 16/5416 useless extension candidates. Maximal degree in co-relation 48794. Up to 4451 conditions per place. [2024-06-27 22:25:48,006 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1184 selfloop transitions, 155 changer transitions 0/1347 dead transitions. [2024-06-27 22:25:48,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 1347 transitions, 30740 flow [2024-06-27 22:25:48,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:48,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:25:48,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 22:25:48,007 INFO L175 Difference]: Start difference. First operand has 598 places, 1301 transitions, 26908 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:25:48,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 1347 transitions, 30740 flow [2024-06-27 22:25:51,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 1347 transitions, 30605 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 22:25:51,861 INFO L231 Difference]: Finished difference. Result has 603 places, 1310 transitions, 27259 flow [2024-06-27 22:25:51,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26773, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27259, PETRI_PLACES=603, PETRI_TRANSITIONS=1310} [2024-06-27 22:25:51,862 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 560 predicate places. [2024-06-27 22:25:51,862 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 1310 transitions, 27259 flow [2024-06-27 22:25:51,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:51,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:51,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:51,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:25:51,862 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:51,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:51,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1011327178, now seen corresponding path program 14 times [2024-06-27 22:25:51,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:51,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478901488] [2024-06-27 22:25:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:51,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:53,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478901488] [2024-06-27 22:25:53,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478901488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:53,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:53,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838084268] [2024-06-27 22:25:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:53,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:53,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:53,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:53,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:25:53,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 1310 transitions, 27259 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:53,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:53,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:25:53,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:55,260 INFO L124 PetriNetUnfolderBase]: 3118/5410 cut-off events. [2024-06-27 22:25:55,260 INFO L125 PetriNetUnfolderBase]: For 479617/479632 co-relation queries the response was YES. [2024-06-27 22:25:55,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49129 conditions, 5410 events. 3118/5410 cut-off events. For 479617/479632 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 36717 event pairs, 447 based on Foata normal form. 16/5413 useless extension candidates. Maximal degree in co-relation 48872. Up to 4668 conditions per place. [2024-06-27 22:25:55,373 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1249 selfloop transitions, 82 changer transitions 0/1339 dead transitions. [2024-06-27 22:25:55,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 1339 transitions, 30445 flow [2024-06-27 22:25:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:25:55,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 22:25:55,377 INFO L175 Difference]: Start difference. First operand has 603 places, 1310 transitions, 27259 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:25:55,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 1339 transitions, 30445 flow [2024-06-27 22:25:59,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 1339 transitions, 29697 flow, removed 132 selfloop flow, removed 11 redundant places. [2024-06-27 22:25:59,219 INFO L231 Difference]: Finished difference. Result has 602 places, 1310 transitions, 26683 flow [2024-06-27 22:25:59,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26511, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26683, PETRI_PLACES=602, PETRI_TRANSITIONS=1310} [2024-06-27 22:25:59,219 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 559 predicate places. [2024-06-27 22:25:59,219 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 1310 transitions, 26683 flow [2024-06-27 22:25:59,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:59,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:59,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:59,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:25:59,220 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:59,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:59,220 INFO L85 PathProgramCache]: Analyzing trace with hash 948899015, now seen corresponding path program 1 times [2024-06-27 22:25:59,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:59,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686663310] [2024-06-27 22:25:59,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:59,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:00,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:00,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686663310] [2024-06-27 22:26:00,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686663310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:00,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:00,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:00,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241781340] [2024-06-27 22:26:00,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:00,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:00,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:00,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:00,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:00,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:26:00,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 1310 transitions, 26683 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:00,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:00,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:26:00,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:03,038 INFO L124 PetriNetUnfolderBase]: 3144/5444 cut-off events. [2024-06-27 22:26:03,038 INFO L125 PetriNetUnfolderBase]: For 490697/490714 co-relation queries the response was YES. [2024-06-27 22:26:03,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48858 conditions, 5444 events. 3144/5444 cut-off events. For 490697/490714 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 36970 event pairs, 455 based on Foata normal form. 19/5446 useless extension candidates. Maximal degree in co-relation 48605. Up to 4752 conditions per place. [2024-06-27 22:26:03,131 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1307 selfloop transitions, 32 changer transitions 0/1347 dead transitions. [2024-06-27 22:26:03,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 1347 transitions, 29757 flow [2024-06-27 22:26:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:26:03,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-27 22:26:03,132 INFO L175 Difference]: Start difference. First operand has 602 places, 1310 transitions, 26683 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:26:03,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 1347 transitions, 29757 flow [2024-06-27 22:26:06,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 1347 transitions, 29642 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:26:06,755 INFO L231 Difference]: Finished difference. Result has 607 places, 1312 transitions, 26680 flow [2024-06-27 22:26:06,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26568, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=26680, PETRI_PLACES=607, PETRI_TRANSITIONS=1312} [2024-06-27 22:26:06,756 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 564 predicate places. [2024-06-27 22:26:06,756 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 1312 transitions, 26680 flow [2024-06-27 22:26:06,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:06,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:06,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:06,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:26:06,756 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:06,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash -511746422, now seen corresponding path program 15 times [2024-06-27 22:26:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:06,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983488428] [2024-06-27 22:26:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:06,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:08,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:08,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983488428] [2024-06-27 22:26:08,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983488428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:08,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:08,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:08,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554812050] [2024-06-27 22:26:08,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:08,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:08,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:08,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:08,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:26:08,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 1312 transitions, 26680 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:08,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:08,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:26:08,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:10,227 INFO L124 PetriNetUnfolderBase]: 3162/5475 cut-off events. [2024-06-27 22:26:10,228 INFO L125 PetriNetUnfolderBase]: For 496633/496648 co-relation queries the response was YES. [2024-06-27 22:26:10,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49209 conditions, 5475 events. 3162/5475 cut-off events. For 496633/496648 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 37153 event pairs, 450 based on Foata normal form. 16/5474 useless extension candidates. Maximal degree in co-relation 48955. Up to 4507 conditions per place. [2024-06-27 22:26:10,338 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1203 selfloop transitions, 163 changer transitions 0/1374 dead transitions. [2024-06-27 22:26:10,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 1374 transitions, 31061 flow [2024-06-27 22:26:10,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:26:10,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564102564102564 [2024-06-27 22:26:10,339 INFO L175 Difference]: Start difference. First operand has 607 places, 1312 transitions, 26680 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:26:10,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 1374 transitions, 31061 flow [2024-06-27 22:26:14,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 1374 transitions, 30977 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:26:14,317 INFO L231 Difference]: Finished difference. Result has 609 places, 1331 transitions, 27221 flow [2024-06-27 22:26:14,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26596, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27221, PETRI_PLACES=609, PETRI_TRANSITIONS=1331} [2024-06-27 22:26:14,318 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 566 predicate places. [2024-06-27 22:26:14,318 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 1331 transitions, 27221 flow [2024-06-27 22:26:14,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:14,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:14,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:14,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:26:14,319 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:14,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash 761969068, now seen corresponding path program 16 times [2024-06-27 22:26:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:14,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265404525] [2024-06-27 22:26:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:15,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:15,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265404525] [2024-06-27 22:26:15,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265404525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:15,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:15,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:15,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36935975] [2024-06-27 22:26:15,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:15,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:15,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:15,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:15,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:15,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:26:15,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 1331 transitions, 27221 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:15,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:15,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:26:15,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:17,780 INFO L124 PetriNetUnfolderBase]: 3160/5472 cut-off events. [2024-06-27 22:26:17,780 INFO L125 PetriNetUnfolderBase]: For 494318/494333 co-relation queries the response was YES. [2024-06-27 22:26:17,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49260 conditions, 5472 events. 3160/5472 cut-off events. For 494318/494333 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 37161 event pairs, 445 based on Foata normal form. 16/5471 useless extension candidates. Maximal degree in co-relation 49005. Up to 4505 conditions per place. [2024-06-27 22:26:17,896 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1197 selfloop transitions, 166 changer transitions 0/1371 dead transitions. [2024-06-27 22:26:17,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 1371 transitions, 31010 flow [2024-06-27 22:26:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:17,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:26:17,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2024-06-27 22:26:17,898 INFO L175 Difference]: Start difference. First operand has 609 places, 1331 transitions, 27221 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:26:17,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 1371 transitions, 31010 flow [2024-06-27 22:26:21,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 1371 transitions, 30743 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:26:21,629 INFO L231 Difference]: Finished difference. Result has 614 places, 1331 transitions, 27295 flow [2024-06-27 22:26:21,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26954, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27295, PETRI_PLACES=614, PETRI_TRANSITIONS=1331} [2024-06-27 22:26:21,630 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 571 predicate places. [2024-06-27 22:26:21,630 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 1331 transitions, 27295 flow [2024-06-27 22:26:21,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:21,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:21,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:21,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:26:21,630 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:21,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:21,630 INFO L85 PathProgramCache]: Analyzing trace with hash 612363584, now seen corresponding path program 17 times [2024-06-27 22:26:21,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:21,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267220673] [2024-06-27 22:26:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:21,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:22,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:22,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267220673] [2024-06-27 22:26:22,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267220673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:22,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:22,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:22,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030449155] [2024-06-27 22:26:22,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:22,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:22,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:22,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:22,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:22,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:26:22,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 1331 transitions, 27295 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:22,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:22,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:26:22,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:25,044 INFO L124 PetriNetUnfolderBase]: 3158/5469 cut-off events. [2024-06-27 22:26:25,044 INFO L125 PetriNetUnfolderBase]: For 491147/491162 co-relation queries the response was YES. [2024-06-27 22:26:25,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49198 conditions, 5469 events. 3158/5469 cut-off events. For 491147/491162 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 37193 event pairs, 468 based on Foata normal form. 16/5468 useless extension candidates. Maximal degree in co-relation 48942. Up to 4830 conditions per place. [2024-06-27 22:26:25,162 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1312 selfloop transitions, 34 changer transitions 0/1354 dead transitions. [2024-06-27 22:26:25,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 1354 transitions, 30150 flow [2024-06-27 22:26:25,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:26:25,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41794871794871796 [2024-06-27 22:26:25,163 INFO L175 Difference]: Start difference. First operand has 614 places, 1331 transitions, 27295 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:26:25,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 1354 transitions, 30150 flow [2024-06-27 22:26:28,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 1354 transitions, 29860 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:26:28,900 INFO L231 Difference]: Finished difference. Result has 618 places, 1331 transitions, 27081 flow [2024-06-27 22:26:28,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=27005, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27081, PETRI_PLACES=618, PETRI_TRANSITIONS=1331} [2024-06-27 22:26:28,901 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 575 predicate places. [2024-06-27 22:26:28,901 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 1331 transitions, 27081 flow [2024-06-27 22:26:28,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:28,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:28,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:28,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:26:28,901 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:28,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:28,902 INFO L85 PathProgramCache]: Analyzing trace with hash -518896262, now seen corresponding path program 18 times [2024-06-27 22:26:28,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:28,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503227667] [2024-06-27 22:26:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:30,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:30,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503227667] [2024-06-27 22:26:30,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503227667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:30,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:30,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:30,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739086296] [2024-06-27 22:26:30,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:30,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:30,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:30,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:30,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:30,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:26:30,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 1331 transitions, 27081 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:30,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:30,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:26:30,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:32,414 INFO L124 PetriNetUnfolderBase]: 3166/5481 cut-off events. [2024-06-27 22:26:32,414 INFO L125 PetriNetUnfolderBase]: For 495550/495565 co-relation queries the response was YES. [2024-06-27 22:26:32,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49053 conditions, 5481 events. 3166/5481 cut-off events. For 495550/495565 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 37161 event pairs, 447 based on Foata normal form. 16/5480 useless extension candidates. Maximal degree in co-relation 48796. Up to 4512 conditions per place. [2024-06-27 22:26:32,531 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1183 selfloop transitions, 176 changer transitions 0/1367 dead transitions. [2024-06-27 22:26:32,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 1367 transitions, 30512 flow [2024-06-27 22:26:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:26:32,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44358974358974357 [2024-06-27 22:26:32,532 INFO L175 Difference]: Start difference. First operand has 618 places, 1331 transitions, 27081 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:26:32,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 1367 transitions, 30512 flow [2024-06-27 22:26:36,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 1367 transitions, 30316 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:36,372 INFO L231 Difference]: Finished difference. Result has 619 places, 1334 transitions, 27274 flow [2024-06-27 22:26:36,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26885, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27274, PETRI_PLACES=619, PETRI_TRANSITIONS=1334} [2024-06-27 22:26:36,373 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 576 predicate places. [2024-06-27 22:26:36,373 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 1334 transitions, 27274 flow [2024-06-27 22:26:36,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:36,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:36,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:36,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:26:36,374 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:36,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash -511754079, now seen corresponding path program 12 times [2024-06-27 22:26:36,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:36,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570665617] [2024-06-27 22:26:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:36,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:37,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570665617] [2024-06-27 22:26:37,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570665617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:37,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:37,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:37,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560580297] [2024-06-27 22:26:37,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:37,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:37,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:37,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:26:37,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 1334 transitions, 27274 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:37,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:37,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:26:37,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:39,860 INFO L124 PetriNetUnfolderBase]: 3174/5493 cut-off events. [2024-06-27 22:26:39,861 INFO L125 PetriNetUnfolderBase]: For 502419/502434 co-relation queries the response was YES. [2024-06-27 22:26:39,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49444 conditions, 5493 events. 3174/5493 cut-off events. For 502419/502434 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 37347 event pairs, 451 based on Foata normal form. 16/5492 useless extension candidates. Maximal degree in co-relation 49186. Up to 4671 conditions per place. [2024-06-27 22:26:39,980 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1249 selfloop transitions, 114 changer transitions 0/1371 dead transitions. [2024-06-27 22:26:39,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 1371 transitions, 30796 flow [2024-06-27 22:26:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:26:39,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441025641025641 [2024-06-27 22:26:39,981 INFO L175 Difference]: Start difference. First operand has 619 places, 1334 transitions, 27274 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:26:39,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 1371 transitions, 30796 flow [2024-06-27 22:26:43,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 1371 transitions, 30259 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:26:43,433 INFO L231 Difference]: Finished difference. Result has 623 places, 1337 transitions, 27039 flow [2024-06-27 22:26:43,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26737, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27039, PETRI_PLACES=623, PETRI_TRANSITIONS=1337} [2024-06-27 22:26:43,434 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 580 predicate places. [2024-06-27 22:26:43,434 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 1337 transitions, 27039 flow [2024-06-27 22:26:43,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:43,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:43,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:43,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:26:43,434 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:43,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:43,435 INFO L85 PathProgramCache]: Analyzing trace with hash -518903919, now seen corresponding path program 13 times [2024-06-27 22:26:43,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:43,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473908811] [2024-06-27 22:26:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:43,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:44,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:44,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473908811] [2024-06-27 22:26:44,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473908811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:44,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:44,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:44,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043904451] [2024-06-27 22:26:44,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:44,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:44,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:26:44,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 1337 transitions, 27039 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:44,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:44,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:26:44,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:46,921 INFO L124 PetriNetUnfolderBase]: 3182/5505 cut-off events. [2024-06-27 22:26:46,922 INFO L125 PetriNetUnfolderBase]: For 506547/506562 co-relation queries the response was YES. [2024-06-27 22:26:47,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49445 conditions, 5505 events. 3182/5505 cut-off events. For 506547/506562 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 37371 event pairs, 446 based on Foata normal form. 16/5504 useless extension candidates. Maximal degree in co-relation 49186. Up to 4680 conditions per place. [2024-06-27 22:26:47,034 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1245 selfloop transitions, 123 changer transitions 0/1376 dead transitions. [2024-06-27 22:26:47,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 1376 transitions, 30612 flow [2024-06-27 22:26:47,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:26:47,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-27 22:26:47,036 INFO L175 Difference]: Start difference. First operand has 623 places, 1337 transitions, 27039 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:26:47,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 1376 transitions, 30612 flow [2024-06-27 22:26:50,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 1376 transitions, 30234 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:51,000 INFO L231 Difference]: Finished difference. Result has 626 places, 1344 transitions, 27071 flow [2024-06-27 22:26:51,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26689, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27071, PETRI_PLACES=626, PETRI_TRANSITIONS=1344} [2024-06-27 22:26:51,000 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 583 predicate places. [2024-06-27 22:26:51,001 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 1344 transitions, 27071 flow [2024-06-27 22:26:51,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:51,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:51,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:51,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:26:51,001 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:51,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash 754819228, now seen corresponding path program 19 times [2024-06-27 22:26:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401990277] [2024-06-27 22:26:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:51,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:52,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:52,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401990277] [2024-06-27 22:26:52,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401990277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:52,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:52,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:52,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289558378] [2024-06-27 22:26:52,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:52,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:52,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:52,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:52,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:52,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:26:52,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 1344 transitions, 27071 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:52,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:52,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:26:52,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:54,635 INFO L124 PetriNetUnfolderBase]: 3190/5517 cut-off events. [2024-06-27 22:26:54,635 INFO L125 PetriNetUnfolderBase]: For 510301/510316 co-relation queries the response was YES. [2024-06-27 22:26:54,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49453 conditions, 5517 events. 3190/5517 cut-off events. For 510301/510316 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 37482 event pairs, 442 based on Foata normal form. 16/5516 useless extension candidates. Maximal degree in co-relation 49193. Up to 4545 conditions per place. [2024-06-27 22:26:54,749 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1195 selfloop transitions, 179 changer transitions 0/1382 dead transitions. [2024-06-27 22:26:54,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1382 transitions, 30573 flow [2024-06-27 22:26:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:26:54,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-06-27 22:26:54,750 INFO L175 Difference]: Start difference. First operand has 626 places, 1344 transitions, 27071 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:26:54,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 1382 transitions, 30573 flow [2024-06-27 22:26:58,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 1382 transitions, 30200 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 22:26:58,311 INFO L231 Difference]: Finished difference. Result has 630 places, 1347 transitions, 27094 flow [2024-06-27 22:26:58,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26698, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27094, PETRI_PLACES=630, PETRI_TRANSITIONS=1347} [2024-06-27 22:26:58,312 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 587 predicate places. [2024-06-27 22:26:58,312 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 1347 transitions, 27094 flow [2024-06-27 22:26:58,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:58,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:58,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:58,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:26:58,313 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:58,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:58,313 INFO L85 PathProgramCache]: Analyzing trace with hash -519105729, now seen corresponding path program 14 times [2024-06-27 22:26:58,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:58,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332468865] [2024-06-27 22:26:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:58,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:59,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332468865] [2024-06-27 22:26:59,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332468865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:59,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:59,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:59,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655052808] [2024-06-27 22:26:59,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:59,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:59,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:59,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:59,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:26:59,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 1347 transitions, 27094 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:59,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:59,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:26:59,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:01,823 INFO L124 PetriNetUnfolderBase]: 3198/5529 cut-off events. [2024-06-27 22:27:01,823 INFO L125 PetriNetUnfolderBase]: For 514373/514388 co-relation queries the response was YES. [2024-06-27 22:27:01,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49686 conditions, 5529 events. 3198/5529 cut-off events. For 514373/514388 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 37550 event pairs, 446 based on Foata normal form. 16/5528 useless extension candidates. Maximal degree in co-relation 49425. Up to 4701 conditions per place. [2024-06-27 22:27:01,939 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1240 selfloop transitions, 132 changer transitions 0/1380 dead transitions. [2024-06-27 22:27:01,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 1380 transitions, 30534 flow [2024-06-27 22:27:01,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:27:01,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:27:01,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:27:01,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 22:27:01,940 INFO L175 Difference]: Start difference. First operand has 630 places, 1347 transitions, 27094 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:27:01,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 1380 transitions, 30534 flow [2024-06-27 22:27:05,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 1380 transitions, 30239 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:27:05,814 INFO L231 Difference]: Finished difference. Result has 634 places, 1350 transitions, 27123 flow [2024-06-27 22:27:05,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26799, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27123, PETRI_PLACES=634, PETRI_TRANSITIONS=1350} [2024-06-27 22:27:05,814 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 591 predicate places. [2024-06-27 22:27:05,814 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 1350 transitions, 27123 flow [2024-06-27 22:27:05,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:05,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:05,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:05,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:27:05,815 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:05,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:05,815 INFO L85 PathProgramCache]: Analyzing trace with hash -519111464, now seen corresponding path program 6 times [2024-06-27 22:27:05,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:05,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125344807] [2024-06-27 22:27:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:05,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:07,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:07,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125344807] [2024-06-27 22:27:07,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125344807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:07,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:07,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:07,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072800387] [2024-06-27 22:27:07,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:07,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:07,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:07,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:07,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:07,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 1350 transitions, 27123 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:07,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:07,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:07,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:09,839 INFO L124 PetriNetUnfolderBase]: 3077/5418 cut-off events. [2024-06-27 22:27:09,839 INFO L125 PetriNetUnfolderBase]: For 521814/521830 co-relation queries the response was YES. [2024-06-27 22:27:09,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48815 conditions, 5418 events. 3077/5418 cut-off events. For 521814/521830 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 37444 event pairs, 427 based on Foata normal form. 17/5419 useless extension candidates. Maximal degree in co-relation 48553. Up to 4357 conditions per place. [2024-06-27 22:27:09,934 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1162 selfloop transitions, 61 changer transitions 0/1381 dead transitions. [2024-06-27 22:27:09,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 1381 transitions, 29943 flow [2024-06-27 22:27:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:27:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:27:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:27:09,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 22:27:09,935 INFO L175 Difference]: Start difference. First operand has 634 places, 1350 transitions, 27123 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:27:09,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 1381 transitions, 29943 flow [2024-06-27 22:27:13,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 1381 transitions, 29565 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 22:27:13,918 INFO L231 Difference]: Finished difference. Result has 639 places, 1354 transitions, 26976 flow [2024-06-27 22:27:13,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26745, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26976, PETRI_PLACES=639, PETRI_TRANSITIONS=1354} [2024-06-27 22:27:13,918 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 596 predicate places. [2024-06-27 22:27:13,919 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 1354 transitions, 26976 flow [2024-06-27 22:27:13,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:13,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:13,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:13,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:27:13,919 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:13,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:13,919 INFO L85 PathProgramCache]: Analyzing trace with hash -511233981, now seen corresponding path program 15 times [2024-06-27 22:27:13,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:13,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275445443] [2024-06-27 22:27:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:13,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:15,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:15,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275445443] [2024-06-27 22:27:15,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275445443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:15,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:15,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:15,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817509186] [2024-06-27 22:27:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:15,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:15,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:15,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:15,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:27:15,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 1354 transitions, 26976 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:15,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:15,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:27:15,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:17,652 INFO L124 PetriNetUnfolderBase]: 3207/5548 cut-off events. [2024-06-27 22:27:17,653 INFO L125 PetriNetUnfolderBase]: For 516206/516221 co-relation queries the response was YES. [2024-06-27 22:27:17,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49681 conditions, 5548 events. 3207/5548 cut-off events. For 516206/516221 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 37658 event pairs, 449 based on Foata normal form. 16/5548 useless extension candidates. Maximal degree in co-relation 49417. Up to 4716 conditions per place. [2024-06-27 22:27:17,771 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1229 selfloop transitions, 144 changer transitions 0/1381 dead transitions. [2024-06-27 22:27:17,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 1381 transitions, 30052 flow [2024-06-27 22:27:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:27:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:27:17,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:27:17,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2024-06-27 22:27:17,773 INFO L175 Difference]: Start difference. First operand has 639 places, 1354 transitions, 26976 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:27:17,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 1381 transitions, 30052 flow [2024-06-27 22:27:22,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 1381 transitions, 29372 flow, removed 64 selfloop flow, removed 10 redundant places. [2024-06-27 22:27:22,323 INFO L231 Difference]: Finished difference. Result has 639 places, 1354 transitions, 26593 flow [2024-06-27 22:27:22,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26296, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26593, PETRI_PLACES=639, PETRI_TRANSITIONS=1354} [2024-06-27 22:27:22,323 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 596 predicate places. [2024-06-27 22:27:22,323 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 1354 transitions, 26593 flow [2024-06-27 22:27:22,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:22,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:22,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:22,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:27:22,324 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:22,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:22,324 INFO L85 PathProgramCache]: Analyzing trace with hash -519105512, now seen corresponding path program 20 times [2024-06-27 22:27:22,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:22,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348835332] [2024-06-27 22:27:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:22,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:23,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:23,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348835332] [2024-06-27 22:27:23,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348835332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:23,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:23,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:23,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004070517] [2024-06-27 22:27:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:23,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:23,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:23,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:23,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:27:23,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 1354 transitions, 26593 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:23,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:23,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:27:23,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:25,727 INFO L124 PetriNetUnfolderBase]: 3205/5545 cut-off events. [2024-06-27 22:27:25,727 INFO L125 PetriNetUnfolderBase]: For 506973/506988 co-relation queries the response was YES. [2024-06-27 22:27:25,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49221 conditions, 5545 events. 3205/5545 cut-off events. For 506973/506988 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 37746 event pairs, 446 based on Foata normal form. 16/5545 useless extension candidates. Maximal degree in co-relation 48959. Up to 4569 conditions per place. [2024-06-27 22:27:25,844 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1175 selfloop transitions, 200 changer transitions 0/1383 dead transitions. [2024-06-27 22:27:25,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 1383 transitions, 29696 flow [2024-06-27 22:27:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:27:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:27:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:27:25,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-27 22:27:25,846 INFO L175 Difference]: Start difference. First operand has 639 places, 1354 transitions, 26593 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:27:25,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 1383 transitions, 29696 flow [2024-06-27 22:27:29,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 1383 transitions, 29499 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:27:29,424 INFO L231 Difference]: Finished difference. Result has 643 places, 1354 transitions, 26805 flow [2024-06-27 22:27:29,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26396, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26805, PETRI_PLACES=643, PETRI_TRANSITIONS=1354} [2024-06-27 22:27:29,424 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 600 predicate places. [2024-06-27 22:27:29,424 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 1354 transitions, 26805 flow [2024-06-27 22:27:29,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:29,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:29,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:29,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:27:29,425 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:29,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:29,425 INFO L85 PathProgramCache]: Analyzing trace with hash -544005950, now seen corresponding path program 7 times [2024-06-27 22:27:29,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:29,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022425267] [2024-06-27 22:27:29,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:29,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:30,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:30,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022425267] [2024-06-27 22:27:30,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022425267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:30,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:30,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:30,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146509148] [2024-06-27 22:27:30,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:30,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:30,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:30,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:30,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:30,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:30,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 1354 transitions, 26805 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:30,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:30,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:30,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:32,864 INFO L124 PetriNetUnfolderBase]: 3123/5473 cut-off events. [2024-06-27 22:27:32,864 INFO L125 PetriNetUnfolderBase]: For 528084/528099 co-relation queries the response was YES. [2024-06-27 22:27:32,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49299 conditions, 5473 events. 3123/5473 cut-off events. For 528084/528099 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37798 event pairs, 260 based on Foata normal form. 16/5472 useless extension candidates. Maximal degree in co-relation 49036. Up to 4024 conditions per place. [2024-06-27 22:27:32,981 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1085 selfloop transitions, 174 changer transitions 0/1417 dead transitions. [2024-06-27 22:27:32,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 1417 transitions, 30334 flow [2024-06-27 22:27:32,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:27:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:27:32,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-27 22:27:32,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47649572649572647 [2024-06-27 22:27:32,982 INFO L175 Difference]: Start difference. First operand has 643 places, 1354 transitions, 26805 flow. Second operand 12 states and 223 transitions. [2024-06-27 22:27:32,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 1417 transitions, 30334 flow [2024-06-27 22:27:36,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 1417 transitions, 29675 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:27:36,786 INFO L231 Difference]: Finished difference. Result has 649 places, 1376 transitions, 27117 flow [2024-06-27 22:27:36,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26146, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=27117, PETRI_PLACES=649, PETRI_TRANSITIONS=1376} [2024-06-27 22:27:36,786 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 606 predicate places. [2024-06-27 22:27:36,786 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 1376 transitions, 27117 flow [2024-06-27 22:27:36,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:36,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:36,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:36,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:27:36,787 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:36,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1062854437, now seen corresponding path program 16 times [2024-06-27 22:27:36,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:36,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978373850] [2024-06-27 22:27:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:36,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:38,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:38,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978373850] [2024-06-27 22:27:38,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978373850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:38,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:38,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:38,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596005978] [2024-06-27 22:27:38,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:38,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:38,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:38,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:27:38,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 1376 transitions, 27117 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:38,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:38,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:27:38,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:40,787 INFO L124 PetriNetUnfolderBase]: 3288/5679 cut-off events. [2024-06-27 22:27:40,787 INFO L125 PetriNetUnfolderBase]: For 554047/554062 co-relation queries the response was YES. [2024-06-27 22:27:40,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51701 conditions, 5679 events. 3288/5679 cut-off events. For 554047/554062 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 38740 event pairs, 334 based on Foata normal form. 16/5681 useless extension candidates. Maximal degree in co-relation 51433. Up to 4786 conditions per place. [2024-06-27 22:27:40,906 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1239 selfloop transitions, 183 changer transitions 0/1430 dead transitions. [2024-06-27 22:27:40,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 1430 transitions, 30857 flow [2024-06-27 22:27:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:27:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:27:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 221 transitions. [2024-06-27 22:27:40,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 22:27:40,907 INFO L175 Difference]: Start difference. First operand has 649 places, 1376 transitions, 27117 flow. Second operand 13 states and 221 transitions. [2024-06-27 22:27:40,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 1430 transitions, 30857 flow [2024-06-27 22:27:45,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 1430 transitions, 30536 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-06-27 22:27:45,650 INFO L231 Difference]: Finished difference. Result has 657 places, 1392 transitions, 27592 flow [2024-06-27 22:27:45,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=26798, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=27592, PETRI_PLACES=657, PETRI_TRANSITIONS=1392} [2024-06-27 22:27:45,651 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 614 predicate places. [2024-06-27 22:27:45,651 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 1392 transitions, 27592 flow [2024-06-27 22:27:45,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:45,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:45,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:45,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:27:45,651 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:45,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:45,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1066370922, now seen corresponding path program 8 times [2024-06-27 22:27:45,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:45,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8144507] [2024-06-27 22:27:45,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:45,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:47,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:47,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8144507] [2024-06-27 22:27:47,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8144507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:47,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:47,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:47,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479206853] [2024-06-27 22:27:47,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:47,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:47,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:47,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:47,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:47,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:27:47,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 1392 transitions, 27592 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:47,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:47,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:27:47,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:49,303 INFO L124 PetriNetUnfolderBase]: 2996/5456 cut-off events. [2024-06-27 22:27:49,303 INFO L125 PetriNetUnfolderBase]: For 555519/555555 co-relation queries the response was YES. [2024-06-27 22:27:49,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49481 conditions, 5456 events. 2996/5456 cut-off events. For 555519/555555 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 39318 event pairs, 532 based on Foata normal form. 16/5428 useless extension candidates. Maximal degree in co-relation 49211. Up to 3768 conditions per place. [2024-06-27 22:27:49,421 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 1058 selfloop transitions, 177 changer transitions 0/1435 dead transitions. [2024-06-27 22:27:49,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 1435 transitions, 30679 flow [2024-06-27 22:27:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 22:27:49,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184149184149184 [2024-06-27 22:27:49,422 INFO L175 Difference]: Start difference. First operand has 657 places, 1392 transitions, 27592 flow. Second operand 11 states and 211 transitions. [2024-06-27 22:27:49,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 1435 transitions, 30679 flow [2024-06-27 22:27:53,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 659 places, 1435 transitions, 30302 flow, removed 105 selfloop flow, removed 8 redundant places. [2024-06-27 22:27:53,738 INFO L231 Difference]: Finished difference. Result has 661 places, 1398 transitions, 27779 flow [2024-06-27 22:27:53,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=27215, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=27779, PETRI_PLACES=661, PETRI_TRANSITIONS=1398} [2024-06-27 22:27:53,739 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 618 predicate places. [2024-06-27 22:27:53,739 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 1398 transitions, 27779 flow [2024-06-27 22:27:53,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:53,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:53,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:53,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:27:53,739 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:53,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:53,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1063599522, now seen corresponding path program 9 times [2024-06-27 22:27:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:53,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959983761] [2024-06-27 22:27:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:53,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959983761] [2024-06-27 22:27:55,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959983761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:55,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:55,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:55,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662671584] [2024-06-27 22:27:55,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:55,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:55,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:55,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:55,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:55,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:27:55,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 1398 transitions, 27779 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:55,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:55,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:27:55,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:57,518 INFO L124 PetriNetUnfolderBase]: 3006/5426 cut-off events. [2024-06-27 22:27:57,518 INFO L125 PetriNetUnfolderBase]: For 548687/548711 co-relation queries the response was YES. [2024-06-27 22:27:57,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49757 conditions, 5426 events. 3006/5426 cut-off events. For 548687/548711 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 38840 event pairs, 371 based on Foata normal form. 16/5394 useless extension candidates. Maximal degree in co-relation 49484. Up to 3870 conditions per place. [2024-06-27 22:27:57,627 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 1074 selfloop transitions, 154 changer transitions 0/1428 dead transitions. [2024-06-27 22:27:57,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 1428 transitions, 30371 flow [2024-06-27 22:27:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:27:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:27:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-27 22:27:57,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071225071225072 [2024-06-27 22:27:57,628 INFO L175 Difference]: Start difference. First operand has 661 places, 1398 transitions, 27779 flow. Second operand 9 states and 178 transitions. [2024-06-27 22:27:57,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 1428 transitions, 30371 flow [2024-06-27 22:28:02,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 1428 transitions, 30054 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-27 22:28:02,019 INFO L231 Difference]: Finished difference. Result has 662 places, 1398 transitions, 27802 flow [2024-06-27 22:28:02,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=27462, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27802, PETRI_PLACES=662, PETRI_TRANSITIONS=1398} [2024-06-27 22:28:02,020 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 619 predicate places. [2024-06-27 22:28:02,020 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 1398 transitions, 27802 flow [2024-06-27 22:28:02,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:02,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:02,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:02,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 22:28:02,020 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:02,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:02,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1660052069, now seen corresponding path program 17 times [2024-06-27 22:28:02,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:02,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772900556] [2024-06-27 22:28:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:02,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:03,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:03,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772900556] [2024-06-27 22:28:03,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772900556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:03,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:03,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:03,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066881299] [2024-06-27 22:28:03,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:03,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:03,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:03,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:28:03,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 1398 transitions, 27802 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:03,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:03,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:28:03,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:06,209 INFO L124 PetriNetUnfolderBase]: 3321/5732 cut-off events. [2024-06-27 22:28:06,210 INFO L125 PetriNetUnfolderBase]: For 553375/553390 co-relation queries the response was YES. [2024-06-27 22:28:06,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52705 conditions, 5732 events. 3321/5732 cut-off events. For 553375/553390 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 39125 event pairs, 343 based on Foata normal form. 16/5734 useless extension candidates. Maximal degree in co-relation 52433. Up to 4926 conditions per place. [2024-06-27 22:28:06,333 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1290 selfloop transitions, 143 changer transitions 0/1441 dead transitions. [2024-06-27 22:28:06,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 1441 transitions, 31004 flow [2024-06-27 22:28:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:28:06,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2024-06-27 22:28:06,334 INFO L175 Difference]: Start difference. First operand has 662 places, 1398 transitions, 27802 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:28:06,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 1441 transitions, 31004 flow [2024-06-27 22:28:10,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 1441 transitions, 30654 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:10,976 INFO L231 Difference]: Finished difference. Result has 664 places, 1410 transitions, 27939 flow [2024-06-27 22:28:10,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=27452, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=27939, PETRI_PLACES=664, PETRI_TRANSITIONS=1410} [2024-06-27 22:28:10,977 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 621 predicate places. [2024-06-27 22:28:10,977 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 1410 transitions, 27939 flow [2024-06-27 22:28:10,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:10,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:10,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:10,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 22:28:10,978 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:10,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:10,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1774742459, now seen corresponding path program 18 times [2024-06-27 22:28:10,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:10,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776483307] [2024-06-27 22:28:10,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:10,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:12,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:12,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776483307] [2024-06-27 22:28:12,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776483307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:12,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:12,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:12,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609119423] [2024-06-27 22:28:12,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:12,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:12,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:28:12,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 1410 transitions, 27939 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:12,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:12,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:28:12,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:15,383 INFO L124 PetriNetUnfolderBase]: 3407/5877 cut-off events. [2024-06-27 22:28:15,383 INFO L125 PetriNetUnfolderBase]: For 564301/564316 co-relation queries the response was YES. [2024-06-27 22:28:15,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53626 conditions, 5877 events. 3407/5877 cut-off events. For 564301/564316 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 40232 event pairs, 250 based on Foata normal form. 16/5879 useless extension candidates. Maximal degree in co-relation 53353. Up to 3782 conditions per place. [2024-06-27 22:28:15,503 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 795 selfloop transitions, 703 changer transitions 0/1506 dead transitions. [2024-06-27 22:28:15,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 1506 transitions, 32618 flow [2024-06-27 22:28:15,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 22:28:15,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755244755244755 [2024-06-27 22:28:15,505 INFO L175 Difference]: Start difference. First operand has 664 places, 1410 transitions, 27939 flow. Second operand 11 states and 204 transitions. [2024-06-27 22:28:15,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 1506 transitions, 32618 flow [2024-06-27 22:28:20,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 1506 transitions, 32327 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 22:28:20,245 INFO L231 Difference]: Finished difference. Result has 668 places, 1472 transitions, 30263 flow [2024-06-27 22:28:20,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=27648, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=644, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=764, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=30263, PETRI_PLACES=668, PETRI_TRANSITIONS=1472} [2024-06-27 22:28:20,246 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 625 predicate places. [2024-06-27 22:28:20,246 INFO L495 AbstractCegarLoop]: Abstraction has has 668 places, 1472 transitions, 30263 flow [2024-06-27 22:28:20,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:20,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:20,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:20,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 22:28:20,247 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:20,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1087463934, now seen corresponding path program 10 times [2024-06-27 22:28:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:20,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834145830] [2024-06-27 22:28:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:20,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:22,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:22,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834145830] [2024-06-27 22:28:22,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834145830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:22,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:22,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:28:22,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408846575] [2024-06-27 22:28:22,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:22,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:28:22,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:22,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:28:22,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:28:22,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:28:22,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 1472 transitions, 30263 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:22,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:22,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:28:22,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:24,216 INFO L124 PetriNetUnfolderBase]: 3165/5663 cut-off events. [2024-06-27 22:28:24,216 INFO L125 PetriNetUnfolderBase]: For 589417/589442 co-relation queries the response was YES. [2024-06-27 22:28:24,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53327 conditions, 5663 events. 3165/5663 cut-off events. For 589417/589442 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 40469 event pairs, 260 based on Foata normal form. 16/5635 useless extension candidates. Maximal degree in co-relation 53052. Up to 3600 conditions per place. [2024-06-27 22:28:24,334 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 972 selfloop transitions, 316 changer transitions 0/1514 dead transitions. [2024-06-27 22:28:24,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 1514 transitions, 33341 flow [2024-06-27 22:28:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 22:28:24,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-27 22:28:24,335 INFO L175 Difference]: Start difference. First operand has 668 places, 1472 transitions, 30263 flow. Second operand 10 states and 192 transitions. [2024-06-27 22:28:24,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 1514 transitions, 33341 flow [2024-06-27 22:28:28,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 1514 transitions, 32798 flow, removed 131 selfloop flow, removed 5 redundant places. [2024-06-27 22:28:28,393 INFO L231 Difference]: Finished difference. Result has 676 places, 1486 transitions, 30945 flow [2024-06-27 22:28:28,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=29720, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=30945, PETRI_PLACES=676, PETRI_TRANSITIONS=1486} [2024-06-27 22:28:28,393 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 633 predicate places. [2024-06-27 22:28:28,393 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 1486 transitions, 30945 flow [2024-06-27 22:28:28,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:28,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:28,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:28,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 22:28:28,394 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:28,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:28,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2059487918, now seen corresponding path program 21 times [2024-06-27 22:28:28,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:28,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622961864] [2024-06-27 22:28:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:28,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:30,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:30,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622961864] [2024-06-27 22:28:30,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622961864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:30,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:30,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:30,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261766409] [2024-06-27 22:28:30,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:30,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:30,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:30,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:30,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:30,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:28:30,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 1486 transitions, 30945 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:30,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:30,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:28:30,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:33,178 INFO L124 PetriNetUnfolderBase]: 3615/6224 cut-off events. [2024-06-27 22:28:33,179 INFO L125 PetriNetUnfolderBase]: For 613710/613725 co-relation queries the response was YES. [2024-06-27 22:28:33,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58437 conditions, 6224 events. 3615/6224 cut-off events. For 613710/613725 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 43032 event pairs, 286 based on Foata normal form. 16/6228 useless extension candidates. Maximal degree in co-relation 58157. Up to 4138 conditions per place. [2024-06-27 22:28:33,307 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 923 selfloop transitions, 722 changer transitions 0/1653 dead transitions. [2024-06-27 22:28:33,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 1653 transitions, 36614 flow [2024-06-27 22:28:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 22:28:33,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-27 22:28:33,308 INFO L175 Difference]: Start difference. First operand has 676 places, 1486 transitions, 30945 flow. Second operand 10 states and 196 transitions. [2024-06-27 22:28:33,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 1653 transitions, 36614 flow [2024-06-27 22:28:39,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 683 places, 1653 transitions, 36447 flow, removed 79 selfloop flow, removed 2 redundant places. [2024-06-27 22:28:39,318 INFO L231 Difference]: Finished difference. Result has 685 places, 1619 transitions, 33795 flow [2024-06-27 22:28:39,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=30778, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=893, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=33795, PETRI_PLACES=685, PETRI_TRANSITIONS=1619} [2024-06-27 22:28:39,318 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 642 predicate places. [2024-06-27 22:28:39,319 INFO L495 AbstractCegarLoop]: Abstraction has has 685 places, 1619 transitions, 33795 flow [2024-06-27 22:28:39,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:39,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:39,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:39,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 22:28:39,319 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:39,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:39,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1774748256, now seen corresponding path program 22 times [2024-06-27 22:28:39,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:39,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075140022] [2024-06-27 22:28:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:39,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:41,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:41,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075140022] [2024-06-27 22:28:41,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075140022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:41,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:41,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:41,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412339326] [2024-06-27 22:28:41,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:41,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:41,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:41,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:28:41,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 1619 transitions, 33795 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:41,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:41,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:28:41,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:44,064 INFO L124 PetriNetUnfolderBase]: 3633/6253 cut-off events. [2024-06-27 22:28:44,064 INFO L125 PetriNetUnfolderBase]: For 622833/622848 co-relation queries the response was YES. [2024-06-27 22:28:44,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60733 conditions, 6253 events. 3633/6253 cut-off events. For 622833/622848 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 43226 event pairs, 278 based on Foata normal form. 16/6257 useless extension candidates. Maximal degree in co-relation 60451. Up to 4161 conditions per place. [2024-06-27 22:28:44,181 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 872 selfloop transitions, 788 changer transitions 0/1668 dead transitions. [2024-06-27 22:28:44,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 1668 transitions, 38121 flow [2024-06-27 22:28:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:44,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 22:28:44,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-27 22:28:44,183 INFO L175 Difference]: Start difference. First operand has 685 places, 1619 transitions, 33795 flow. Second operand 11 states and 203 transitions. [2024-06-27 22:28:44,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 1668 transitions, 38121 flow [2024-06-27 22:28:49,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 1668 transitions, 37567 flow, removed 217 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:49,443 INFO L231 Difference]: Finished difference. Result has 693 places, 1635 transitions, 35701 flow [2024-06-27 22:28:49,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=33483, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=772, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=35701, PETRI_PLACES=693, PETRI_TRANSITIONS=1635} [2024-06-27 22:28:49,443 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 650 predicate places. [2024-06-27 22:28:49,444 INFO L495 AbstractCegarLoop]: Abstraction has has 693 places, 1635 transitions, 35701 flow [2024-06-27 22:28:49,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:49,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:49,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:49,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 22:28:49,444 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:49,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:49,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1087469669, now seen corresponding path program 19 times [2024-06-27 22:28:49,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:49,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602269048] [2024-06-27 22:28:49,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:49,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:51,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:51,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602269048] [2024-06-27 22:28:51,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602269048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:51,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:51,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:51,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961388591] [2024-06-27 22:28:51,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:51,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:51,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:28:51,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 1635 transitions, 35701 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:51,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:51,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:28:51,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:54,043 INFO L124 PetriNetUnfolderBase]: 3631/6250 cut-off events. [2024-06-27 22:28:54,043 INFO L125 PetriNetUnfolderBase]: For 621811/621826 co-relation queries the response was YES. [2024-06-27 22:28:54,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62402 conditions, 6250 events. 3631/6250 cut-off events. For 621811/621826 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 43194 event pairs, 247 based on Foata normal form. 16/6254 useless extension candidates. Maximal degree in co-relation 62116. Up to 4121 conditions per place. [2024-06-27 22:28:54,188 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 947 selfloop transitions, 713 changer transitions 0/1668 dead transitions. [2024-06-27 22:28:54,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 703 places, 1668 transitions, 39577 flow [2024-06-27 22:28:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 22:28:54,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 22:28:54,190 INFO L175 Difference]: Start difference. First operand has 693 places, 1635 transitions, 35701 flow. Second operand 11 states and 202 transitions. [2024-06-27 22:28:54,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 703 places, 1668 transitions, 39577 flow [2024-06-27 22:29:00,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 1668 transitions, 38266 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:00,396 INFO L231 Difference]: Finished difference. Result has 695 places, 1635 transitions, 35828 flow [2024-06-27 22:29:00,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=34390, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=713, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=35828, PETRI_PLACES=695, PETRI_TRANSITIONS=1635} [2024-06-27 22:29:00,397 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 652 predicate places. [2024-06-27 22:29:00,397 INFO L495 AbstractCegarLoop]: Abstraction has has 695 places, 1635 transitions, 35828 flow [2024-06-27 22:29:00,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:00,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:00,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:00,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 22:29:00,397 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:00,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1280901635, now seen corresponding path program 20 times [2024-06-27 22:29:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:00,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281986535] [2024-06-27 22:29:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:02,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:02,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281986535] [2024-06-27 22:29:02,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281986535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:02,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:02,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:02,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095353495] [2024-06-27 22:29:02,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:02,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:02,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:02,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:29:02,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 1635 transitions, 35828 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:02,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:02,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:29:02,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:05,343 INFO L124 PetriNetUnfolderBase]: 3655/6285 cut-off events. [2024-06-27 22:29:05,343 INFO L125 PetriNetUnfolderBase]: For 633510/633525 co-relation queries the response was YES. [2024-06-27 22:29:05,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62432 conditions, 6285 events. 3655/6285 cut-off events. For 633510/633525 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 43491 event pairs, 382 based on Foata normal form. 16/6289 useless extension candidates. Maximal degree in co-relation 62146. Up to 5428 conditions per place. [2024-06-27 22:29:05,475 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1528 selfloop transitions, 143 changer transitions 0/1679 dead transitions. [2024-06-27 22:29:05,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 1679 transitions, 39600 flow [2024-06-27 22:29:05,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:29:05,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2024-06-27 22:29:05,476 INFO L175 Difference]: Start difference. First operand has 695 places, 1635 transitions, 35828 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:29:05,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 1679 transitions, 39600 flow [2024-06-27 22:29:11,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 1679 transitions, 38301 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:11,398 INFO L231 Difference]: Finished difference. Result has 697 places, 1650 transitions, 35137 flow [2024-06-27 22:29:11,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=34557, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=35137, PETRI_PLACES=697, PETRI_TRANSITIONS=1650} [2024-06-27 22:29:11,399 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 654 predicate places. [2024-06-27 22:29:11,399 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 1650 transitions, 35137 flow [2024-06-27 22:29:11,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:11,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:11,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:11,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 22:29:11,400 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:11,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1110051315, now seen corresponding path program 21 times [2024-06-27 22:29:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:11,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137068183] [2024-06-27 22:29:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:11,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:13,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:13,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137068183] [2024-06-27 22:29:13,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137068183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:13,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:13,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:13,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107962116] [2024-06-27 22:29:13,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:13,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:13,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:29:13,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 1650 transitions, 35137 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:13,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:13,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:29:13,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:16,586 INFO L124 PetriNetUnfolderBase]: 3759/6446 cut-off events. [2024-06-27 22:29:16,586 INFO L125 PetriNetUnfolderBase]: For 656369/656384 co-relation queries the response was YES. [2024-06-27 22:29:16,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62965 conditions, 6446 events. 3759/6446 cut-off events. For 656369/656384 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 44779 event pairs, 290 based on Foata normal form. 16/6450 useless extension candidates. Maximal degree in co-relation 62678. Up to 4276 conditions per place. [2024-06-27 22:29:16,709 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 991 selfloop transitions, 754 changer transitions 0/1753 dead transitions. [2024-06-27 22:29:16,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 1753 transitions, 40768 flow [2024-06-27 22:29:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:16,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 22:29:16,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801864801864802 [2024-06-27 22:29:16,710 INFO L175 Difference]: Start difference. First operand has 697 places, 1650 transitions, 35137 flow. Second operand 11 states and 206 transitions. [2024-06-27 22:29:16,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 707 places, 1753 transitions, 40768 flow [2024-06-27 22:29:22,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 1753 transitions, 40457 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:22,580 INFO L231 Difference]: Finished difference. Result has 700 places, 1718 transitions, 37590 flow [2024-06-27 22:29:22,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=34826, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=686, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=962, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=37590, PETRI_PLACES=700, PETRI_TRANSITIONS=1718} [2024-06-27 22:29:22,581 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 657 predicate places. [2024-06-27 22:29:22,581 INFO L495 AbstractCegarLoop]: Abstraction has has 700 places, 1718 transitions, 37590 flow [2024-06-27 22:29:22,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:22,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:22,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:22,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 22:29:22,582 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:22,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2059487701, now seen corresponding path program 22 times [2024-06-27 22:29:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:22,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366337646] [2024-06-27 22:29:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:22,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:24,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366337646] [2024-06-27 22:29:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366337646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319144232] [2024-06-27 22:29:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:24,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:24,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:29:24,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 1718 transitions, 37590 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:24,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:24,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:29:24,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:27,905 INFO L124 PetriNetUnfolderBase]: 3757/6443 cut-off events. [2024-06-27 22:29:27,905 INFO L125 PetriNetUnfolderBase]: For 659133/659148 co-relation queries the response was YES. [2024-06-27 22:29:28,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64504 conditions, 6443 events. 3757/6443 cut-off events. For 659133/659148 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 44699 event pairs, 290 based on Foata normal form. 16/6447 useless extension candidates. Maximal degree in co-relation 64215. Up to 4274 conditions per place. [2024-06-27 22:29:28,040 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 984 selfloop transitions, 760 changer transitions 0/1752 dead transitions. [2024-06-27 22:29:28,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 1752 transitions, 41938 flow [2024-06-27 22:29:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 22:29:28,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755244755244755 [2024-06-27 22:29:28,041 INFO L175 Difference]: Start difference. First operand has 700 places, 1718 transitions, 37590 flow. Second operand 11 states and 204 transitions. [2024-06-27 22:29:28,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 1752 transitions, 41938 flow [2024-06-27 22:29:33,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 1752 transitions, 40942 flow, removed 108 selfloop flow, removed 5 redundant places. [2024-06-27 22:29:33,809 INFO L231 Difference]: Finished difference. Result has 706 places, 1718 transitions, 38133 flow [2024-06-27 22:29:33,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=36594, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=760, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=958, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=38133, PETRI_PLACES=706, PETRI_TRANSITIONS=1718} [2024-06-27 22:29:33,810 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 663 predicate places. [2024-06-27 22:29:33,810 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 1718 transitions, 38133 flow [2024-06-27 22:29:33,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:33,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:33,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:33,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 22:29:33,810 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:33,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:33,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2034380967, now seen corresponding path program 2 times [2024-06-27 22:29:33,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:33,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863631412] [2024-06-27 22:29:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:33,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:35,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:35,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863631412] [2024-06-27 22:29:35,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863631412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:35,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:35,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:35,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957285698] [2024-06-27 22:29:35,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:35,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:35,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:35,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:35,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:35,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:29:35,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 1718 transitions, 38133 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:35,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:35,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:29:35,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:38,815 INFO L124 PetriNetUnfolderBase]: 4088/7184 cut-off events. [2024-06-27 22:29:38,815 INFO L125 PetriNetUnfolderBase]: For 710835/710850 co-relation queries the response was YES. [2024-06-27 22:29:38,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69095 conditions, 7184 events. 4088/7184 cut-off events. For 710835/710850 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 52092 event pairs, 378 based on Foata normal form. 17/7189 useless extension candidates. Maximal degree in co-relation 68805. Up to 4770 conditions per place. [2024-06-27 22:29:38,983 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 1534 selfloop transitions, 297 changer transitions 0/1839 dead transitions. [2024-06-27 22:29:38,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 1839 transitions, 43688 flow [2024-06-27 22:29:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 22:29:38,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48951048951048953 [2024-06-27 22:29:38,984 INFO L175 Difference]: Start difference. First operand has 706 places, 1718 transitions, 38133 flow. Second operand 11 states and 210 transitions. [2024-06-27 22:29:38,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 1839 transitions, 43688 flow [2024-06-27 22:29:44,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 1839 transitions, 42132 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 22:29:44,185 INFO L231 Difference]: Finished difference. Result has 713 places, 1780 transitions, 38457 flow [2024-06-27 22:29:44,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=36577, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=38457, PETRI_PLACES=713, PETRI_TRANSITIONS=1780} [2024-06-27 22:29:44,186 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 670 predicate places. [2024-06-27 22:29:44,186 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 1780 transitions, 38457 flow [2024-06-27 22:29:44,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:44,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:44,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:44,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 22:29:44,187 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:44,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:44,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2091387255, now seen corresponding path program 23 times [2024-06-27 22:29:44,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:44,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685981401] [2024-06-27 22:29:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:44,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:46,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:46,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685981401] [2024-06-27 22:29:46,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685981401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:46,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:46,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:46,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270502756] [2024-06-27 22:29:46,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:46,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:46,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:46,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:46,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:46,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:29:46,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 1780 transitions, 38457 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:46,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:46,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:29:46,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:49,634 INFO L124 PetriNetUnfolderBase]: 4116/7192 cut-off events. [2024-06-27 22:29:49,635 INFO L125 PetriNetUnfolderBase]: For 698806/698823 co-relation queries the response was YES. [2024-06-27 22:29:49,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70472 conditions, 7192 events. 4116/7192 cut-off events. For 698806/698823 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 51813 event pairs, 347 based on Foata normal form. 16/7191 useless extension candidates. Maximal degree in co-relation 70175. Up to 4838 conditions per place. [2024-06-27 22:29:49,794 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1027 selfloop transitions, 795 changer transitions 0/1830 dead transitions. [2024-06-27 22:29:49,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 1830 transitions, 43284 flow [2024-06-27 22:29:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 22:29:49,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 22:29:49,795 INFO L175 Difference]: Start difference. First operand has 713 places, 1780 transitions, 38457 flow. Second operand 11 states and 202 transitions. [2024-06-27 22:29:49,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 723 places, 1830 transitions, 43284 flow [2024-06-27 22:29:55,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 720 places, 1830 transitions, 43145 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-27 22:29:55,445 INFO L231 Difference]: Finished difference. Result has 721 places, 1798 transitions, 40242 flow [2024-06-27 22:29:55,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=38318, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=777, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1003, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=40242, PETRI_PLACES=721, PETRI_TRANSITIONS=1798} [2024-06-27 22:29:55,446 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 678 predicate places. [2024-06-27 22:29:55,446 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 1798 transitions, 40242 flow [2024-06-27 22:29:55,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:55,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:55,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:55,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 22:29:55,446 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:55,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1341524736, now seen corresponding path program 11 times [2024-06-27 22:29:55,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:55,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164357817] [2024-06-27 22:29:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:55,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:57,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:57,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164357817] [2024-06-27 22:29:57,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164357817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:57,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:57,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:29:57,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659244223] [2024-06-27 22:29:57,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:57,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:29:57,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:57,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:29:57,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:29:57,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:29:57,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 1798 transitions, 40242 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:57,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:57,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:29:57,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:00,284 INFO L124 PetriNetUnfolderBase]: 3900/6983 cut-off events. [2024-06-27 22:30:00,284 INFO L125 PetriNetUnfolderBase]: For 707272/707314 co-relation queries the response was YES. [2024-06-27 22:30:00,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69130 conditions, 6983 events. 3900/6983 cut-off events. For 707272/707314 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 51578 event pairs, 296 based on Foata normal form. 17/6942 useless extension candidates. Maximal degree in co-relation 68831. Up to 4556 conditions per place. [2024-06-27 22:30:00,694 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 1225 selfloop transitions, 343 changer transitions 0/1834 dead transitions. [2024-06-27 22:30:00,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 1834 transitions, 43739 flow [2024-06-27 22:30:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:30:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:30:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 22:30:00,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897435897435897 [2024-06-27 22:30:00,695 INFO L175 Difference]: Start difference. First operand has 721 places, 1798 transitions, 40242 flow. Second operand 10 states and 191 transitions. [2024-06-27 22:30:00,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 1834 transitions, 43739 flow [2024-06-27 22:30:07,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 1834 transitions, 42721 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-27 22:30:07,803 INFO L231 Difference]: Finished difference. Result has 727 places, 1807 transitions, 40362 flow [2024-06-27 22:30:07,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=39224, PETRI_DIFFERENCE_MINUEND_PLACES=715, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=40362, PETRI_PLACES=727, PETRI_TRANSITIONS=1807} [2024-06-27 22:30:07,804 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 684 predicate places. [2024-06-27 22:30:07,804 INFO L495 AbstractCegarLoop]: Abstraction has has 727 places, 1807 transitions, 40362 flow [2024-06-27 22:30:07,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:07,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:07,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:07,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 22:30:07,804 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:07,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:07,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2091387038, now seen corresponding path program 23 times [2024-06-27 22:30:07,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:07,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718254218] [2024-06-27 22:30:07,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:07,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:09,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:09,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718254218] [2024-06-27 22:30:09,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718254218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:09,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:09,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107166215] [2024-06-27 22:30:09,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:09,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:09,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:09,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:09,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:30:09,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 1807 transitions, 40362 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:09,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:09,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:30:09,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:13,803 INFO L124 PetriNetUnfolderBase]: 4177/7276 cut-off events. [2024-06-27 22:30:13,803 INFO L125 PetriNetUnfolderBase]: For 738242/738259 co-relation queries the response was YES. [2024-06-27 22:30:13,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72478 conditions, 7276 events. 4177/7276 cut-off events. For 738242/738259 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 52418 event pairs, 357 based on Foata normal form. 16/7275 useless extension candidates. Maximal degree in co-relation 72176. Up to 5000 conditions per place. [2024-06-27 22:30:13,956 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1115 selfloop transitions, 742 changer transitions 0/1865 dead transitions. [2024-06-27 22:30:13,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 1865 transitions, 45674 flow [2024-06-27 22:30:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:30:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:30:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 22:30:13,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-27 22:30:13,958 INFO L175 Difference]: Start difference. First operand has 727 places, 1807 transitions, 40362 flow. Second operand 10 states and 196 transitions. [2024-06-27 22:30:13,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 736 places, 1865 transitions, 45674 flow [2024-06-27 22:30:21,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 1865 transitions, 45304 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-27 22:30:21,227 INFO L231 Difference]: Finished difference. Result has 733 places, 1831 transitions, 41907 flow [2024-06-27 22:30:21,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=39998, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=718, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1089, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=41907, PETRI_PLACES=733, PETRI_TRANSITIONS=1831} [2024-06-27 22:30:21,228 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 690 predicate places. [2024-06-27 22:30:21,228 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 1831 transitions, 41907 flow [2024-06-27 22:30:21,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:21,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:21,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:21,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 22:30:21,228 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:21,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:21,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2091594645, now seen corresponding path program 24 times [2024-06-27 22:30:21,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:21,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059221656] [2024-06-27 22:30:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:21,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:23,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:23,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059221656] [2024-06-27 22:30:23,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059221656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:23,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:23,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:23,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453354878] [2024-06-27 22:30:23,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:23,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:23,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:23,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:23,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:30:23,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 1831 transitions, 41907 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:23,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:23,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:30:23,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:27,295 INFO L124 PetriNetUnfolderBase]: 4189/7317 cut-off events. [2024-06-27 22:30:27,295 INFO L125 PetriNetUnfolderBase]: For 745843/745860 co-relation queries the response was YES. [2024-06-27 22:30:27,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73353 conditions, 7317 events. 4189/7317 cut-off events. For 745843/745860 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 52899 event pairs, 340 based on Foata normal form. 16/7316 useless extension candidates. Maximal degree in co-relation 73051. Up to 4946 conditions per place. [2024-06-27 22:30:27,461 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1088 selfloop transitions, 775 changer transitions 0/1871 dead transitions. [2024-06-27 22:30:27,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 1871 transitions, 46653 flow [2024-06-27 22:30:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 22:30:27,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-27 22:30:27,463 INFO L175 Difference]: Start difference. First operand has 733 places, 1831 transitions, 41907 flow. Second operand 11 states and 203 transitions. [2024-06-27 22:30:27,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 1871 transitions, 46653 flow [2024-06-27 22:30:34,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 738 places, 1871 transitions, 45435 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-27 22:30:34,696 INFO L231 Difference]: Finished difference. Result has 739 places, 1837 transitions, 42366 flow [2024-06-27 22:30:34,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=40689, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=769, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1062, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=42366, PETRI_PLACES=739, PETRI_TRANSITIONS=1837} [2024-06-27 22:30:34,697 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 696 predicate places. [2024-06-27 22:30:34,697 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 1837 transitions, 42366 flow [2024-06-27 22:30:34,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:34,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:34,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:34,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 22:30:34,697 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:34,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:34,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1341530688, now seen corresponding path program 24 times [2024-06-27 22:30:34,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:34,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90052459] [2024-06-27 22:30:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:34,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:36,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:36,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90052459] [2024-06-27 22:30:36,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90052459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:36,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:36,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:36,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177926328] [2024-06-27 22:30:36,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:36,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:36,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:36,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:36,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:36,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:30:36,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 1837 transitions, 42366 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:36,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:36,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:30:36,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:40,777 INFO L124 PetriNetUnfolderBase]: 4187/7292 cut-off events. [2024-06-27 22:30:40,777 INFO L125 PetriNetUnfolderBase]: For 745540/745557 co-relation queries the response was YES. [2024-06-27 22:30:40,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73216 conditions, 7292 events. 4187/7292 cut-off events. For 745540/745557 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 52582 event pairs, 357 based on Foata normal form. 16/7291 useless extension candidates. Maximal degree in co-relation 72912. Up to 5016 conditions per place. [2024-06-27 22:30:40,961 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1129 selfloop transitions, 734 changer transitions 0/1871 dead transitions. [2024-06-27 22:30:40,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 1871 transitions, 46979 flow [2024-06-27 22:30:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:30:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:30:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 22:30:40,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-27 22:30:40,962 INFO L175 Difference]: Start difference. First operand has 739 places, 1837 transitions, 42366 flow. Second operand 10 states and 196 transitions. [2024-06-27 22:30:40,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 1871 transitions, 46979 flow [2024-06-27 22:30:49,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 1871 transitions, 45388 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 22:30:49,600 INFO L231 Difference]: Finished difference. Result has 741 places, 1837 transitions, 42258 flow [2024-06-27 22:30:49,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=40775, PETRI_DIFFERENCE_MINUEND_PLACES=731, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=734, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=42258, PETRI_PLACES=741, PETRI_TRANSITIONS=1837} [2024-06-27 22:30:49,601 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 698 predicate places. [2024-06-27 22:30:49,601 INFO L495 AbstractCegarLoop]: Abstraction has has 741 places, 1837 transitions, 42258 flow [2024-06-27 22:30:49,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:49,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:49,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:49,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 22:30:49,602 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:49,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:49,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1341530471, now seen corresponding path program 25 times [2024-06-27 22:30:49,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:49,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767433915] [2024-06-27 22:30:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:49,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:51,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:51,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767433915] [2024-06-27 22:30:51,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767433915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:51,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:51,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:51,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628825699] [2024-06-27 22:30:51,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:51,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:51,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:30:51,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 1837 transitions, 42258 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:51,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:51,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:30:51,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:55,695 INFO L124 PetriNetUnfolderBase]: 4185/7311 cut-off events. [2024-06-27 22:30:55,695 INFO L125 PetriNetUnfolderBase]: For 737165/737182 co-relation queries the response was YES. [2024-06-27 22:30:55,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73023 conditions, 7311 events. 4185/7311 cut-off events. For 737165/737182 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 52895 event pairs, 344 based on Foata normal form. 16/7310 useless extension candidates. Maximal degree in co-relation 72719. Up to 4941 conditions per place. [2024-06-27 22:30:55,982 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1093 selfloop transitions, 771 changer transitions 0/1872 dead transitions. [2024-06-27 22:30:55,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 1872 transitions, 46624 flow [2024-06-27 22:30:55,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 22:30:55,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-27 22:30:55,984 INFO L175 Difference]: Start difference. First operand has 741 places, 1837 transitions, 42258 flow. Second operand 11 states and 203 transitions. [2024-06-27 22:30:55,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 751 places, 1872 transitions, 46624 flow [2024-06-27 22:31:03,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 1872 transitions, 45030 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 22:31:03,741 INFO L231 Difference]: Finished difference. Result has 743 places, 1837 transitions, 42221 flow [2024-06-27 22:31:03,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=40664, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=771, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=42221, PETRI_PLACES=743, PETRI_TRANSITIONS=1837} [2024-06-27 22:31:03,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 700 predicate places. [2024-06-27 22:31:03,742 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 1837 transitions, 42221 flow [2024-06-27 22:31:03,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:03,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:03,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:03,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 22:31:03,743 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:03,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1341739938, now seen corresponding path program 25 times [2024-06-27 22:31:03,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:03,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755807190] [2024-06-27 22:31:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:03,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:05,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755807190] [2024-06-27 22:31:05,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755807190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:05,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:05,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:31:05,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545834001] [2024-06-27 22:31:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:05,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:31:05,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:31:05,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:31:05,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:31:05,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 1837 transitions, 42221 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:05,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:05,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:31:05,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:09,691 INFO L124 PetriNetUnfolderBase]: 4183/7286 cut-off events. [2024-06-27 22:31:09,692 INFO L125 PetriNetUnfolderBase]: For 732560/732577 co-relation queries the response was YES. [2024-06-27 22:31:09,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72816 conditions, 7286 events. 4183/7286 cut-off events. For 732560/732577 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 52586 event pairs, 357 based on Foata normal form. 16/7285 useless extension candidates. Maximal degree in co-relation 72510. Up to 5011 conditions per place. [2024-06-27 22:31:09,866 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1106 selfloop transitions, 754 changer transitions 0/1868 dead transitions. [2024-06-27 22:31:09,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 1868 transitions, 46508 flow [2024-06-27 22:31:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:31:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:31:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:31:09,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 22:31:09,868 INFO L175 Difference]: Start difference. First operand has 743 places, 1837 transitions, 42221 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:31:09,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 1868 transitions, 46508 flow [2024-06-27 22:31:16,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 741 places, 1868 transitions, 44766 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 22:31:16,210 INFO L231 Difference]: Finished difference. Result has 742 places, 1837 transitions, 42001 flow [2024-06-27 22:31:16,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=40479, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=754, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1083, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=42001, PETRI_PLACES=742, PETRI_TRANSITIONS=1837} [2024-06-27 22:31:16,211 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 699 predicate places. [2024-06-27 22:31:16,211 INFO L495 AbstractCegarLoop]: Abstraction has has 742 places, 1837 transitions, 42001 flow [2024-06-27 22:31:16,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:16,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:16,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:16,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 22:31:16,211 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:16,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1039533785, now seen corresponding path program 26 times [2024-06-27 22:31:16,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:16,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322666620] [2024-06-27 22:31:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:16,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:18,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:18,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322666620] [2024-06-27 22:31:18,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322666620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:18,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:18,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:31:18,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394493344] [2024-06-27 22:31:18,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:18,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:31:18,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:18,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:31:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:31:18,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:31:18,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 742 places, 1837 transitions, 42001 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:18,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:18,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:31:18,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:22,622 INFO L124 PetriNetUnfolderBase]: 4197/7359 cut-off events. [2024-06-27 22:31:22,622 INFO L125 PetriNetUnfolderBase]: For 731512/731527 co-relation queries the response was YES. [2024-06-27 22:31:22,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72855 conditions, 7359 events. 4197/7359 cut-off events. For 731512/731527 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 53511 event pairs, 506 based on Foata normal form. 16/7362 useless extension candidates. Maximal degree in co-relation 72549. Up to 6276 conditions per place. [2024-06-27 22:31:22,797 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1725 selfloop transitions, 143 changer transitions 0/1876 dead transitions. [2024-06-27 22:31:22,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 1876 transitions, 46066 flow [2024-06-27 22:31:22,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:31:22,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2024-06-27 22:31:22,798 INFO L175 Difference]: Start difference. First operand has 742 places, 1837 transitions, 42001 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:31:22,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 1876 transitions, 46066 flow [2024-06-27 22:31:29,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 1876 transitions, 44511 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:31:29,443 INFO L231 Difference]: Finished difference. Result has 744 places, 1849 transitions, 40971 flow [2024-06-27 22:31:29,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=40446, PETRI_DIFFERENCE_MINUEND_PLACES=733, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=40971, PETRI_PLACES=744, PETRI_TRANSITIONS=1849} [2024-06-27 22:31:29,444 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 701 predicate places. [2024-06-27 22:31:29,444 INFO L495 AbstractCegarLoop]: Abstraction has has 744 places, 1849 transitions, 40971 flow [2024-06-27 22:31:29,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:29,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:29,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:29,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 22:31:29,444 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:29,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1043258652, now seen corresponding path program 26 times [2024-06-27 22:31:29,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:29,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095760473] [2024-06-27 22:31:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:29,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:31,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095760473] [2024-06-27 22:31:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095760473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:31,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:31:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138081906] [2024-06-27 22:31:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:31,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:31:31,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:31:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:31:31,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:31:31,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 1849 transitions, 40971 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:31,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:31,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:31:31,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:35,678 INFO L124 PetriNetUnfolderBase]: 4309/7477 cut-off events. [2024-06-27 22:31:35,678 INFO L125 PetriNetUnfolderBase]: For 724750/724767 co-relation queries the response was YES. [2024-06-27 22:31:35,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72675 conditions, 7477 events. 4309/7477 cut-off events. For 724750/724767 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 54086 event pairs, 398 based on Foata normal form. 16/7476 useless extension candidates. Maximal degree in co-relation 72367. Up to 5171 conditions per place. [2024-06-27 22:31:35,849 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1113 selfloop transitions, 839 changer transitions 0/1960 dead transitions. [2024-06-27 22:31:35,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 1960 transitions, 46431 flow [2024-06-27 22:31:35,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 22:31:35,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-27 22:31:35,850 INFO L175 Difference]: Start difference. First operand has 744 places, 1849 transitions, 40971 flow. Second operand 11 states and 203 transitions. [2024-06-27 22:31:35,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 1960 transitions, 46431 flow [2024-06-27 22:31:41,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 1960 transitions, 46224 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:31:41,868 INFO L231 Difference]: Finished difference. Result has 750 places, 1931 transitions, 43649 flow [2024-06-27 22:31:41,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=40764, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=757, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1091, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=43649, PETRI_PLACES=750, PETRI_TRANSITIONS=1931} [2024-06-27 22:31:41,869 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 707 predicate places. [2024-06-27 22:31:41,869 INFO L495 AbstractCegarLoop]: Abstraction has has 750 places, 1931 transitions, 43649 flow [2024-06-27 22:31:41,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:41,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:41,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:41,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 22:31:41,869 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:41,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1043258435, now seen corresponding path program 27 times [2024-06-27 22:31:41,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:41,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742035646] [2024-06-27 22:31:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:41,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:44,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:44,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742035646] [2024-06-27 22:31:44,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742035646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:44,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:44,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:31:44,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441152195] [2024-06-27 22:31:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:44,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:31:44,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:44,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:31:44,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:31:44,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 22:31:44,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 750 places, 1931 transitions, 43649 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:44,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:44,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 22:31:44,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15